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riscv-gcc-1
Commit e73d2479 by Alan Modra Committed by Alan Modra
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ffitarget.h: Import from upstream. 

	* src/powerpc/ffitarget.h: Import from upstream.
	* src/powerpc/ffi_powerpc.h: Likewise.
	* src/powerpc/ffi.c: Likewise.
	* src/powerpc/ffi_sysv.c: Likewise.
	* src/powerpc/ffi_linux64.c: Likewise.
	* src/powerpc/sysv.S: Likewise.
	* src/powerpc/ppc_closure.S: Likewise.
	* src/powerpc/linux64.S: Likewise.
	* src/powerpc/linux64_closure.S: Likewise.
	* src/types.c: Likewise.
	* Makefile.am (EXTRA_DIST): Add new src/powerpc files.
	(nodist_libffi_la_SOURCES <POWERPC, POWERPC_FREEBSD>): Likewise.
	* configure.ac (HAVE_LONG_DOUBLE_VARIANT): Define for powerpc.
	* include/ffi.h.in (ffi_prep_types): Declare.
	* src/prep_cif.c (ffi_prep_cif_core): Call ffi_prep_types.
	* configure: Regenerate.
	* fficonfig.h.in: Regenerate.
	* Makefile.in: Regenerate.
	* man/Makefile.in: Regenerate.
	* include/Makefile.in: Regenerate.
	* testsuite/Makefile.in: Regenerate.

From-SVN: r205844
parent 3e0fc59a
Showing with 2179 additions and 1774 deletions
libffi/ChangeLog
2013-12-10 Alan Modra <amodra@gmail.com>
* src/powerpc/ffitarget.h: Import from upstream.
* src/powerpc/ffi_powerpc.h: Likewise.
* src/powerpc/ffi.c: Likewise.
* src/powerpc/ffi_sysv.c: Likewise.
* src/powerpc/ffi_linux64.c: Likewise.
* src/powerpc/sysv.S: Likewise.
* src/powerpc/ppc_closure.S: Likewise.
* src/powerpc/linux64.S: Likewise.
* src/powerpc/linux64_closure.S: Likewise.
* src/types.c: Likewise.
* Makefile.am (EXTRA_DIST): Add new src/powerpc files.
(nodist_libffi_la_SOURCES <POWERPC, POWERPC_FREEBSD>): Likewise.
* configure.ac (HAVE_LONG_DOUBLE_VARIANT): Define for powerpc.
* include/ffi.h.in (ffi_prep_types): Declare.
* src/prep_cif.c (ffi_prep_cif_core): Call ffi_prep_types.
* configure: Regenerate.
* fficonfig.h.in: Regenerate.
* Makefile.in: Regenerate.
* man/Makefile.in: Regenerate.
* include/Makefile.in: Regenerate.
* testsuite/Makefile.in: Regenerate.
2013-11-18 Alan Modra <amodra@gmail.com> 2013-11-18 Alan Modra <amodra@gmail.com>
* src/powerpc/ppc_closure.S: Don't bl .Luint128. * src/powerpc/ppc_closure.S: Don't bl .Luint128.
......
libffi/Makefile.am
...@@ -15,10 +15,12 @@ EXTRA_DIST = LICENSE ChangeLog.v1 ChangeLog.libgcj configure.host \ ...@@ -15,10 +15,12 @@ EXTRA_DIST = LICENSE ChangeLog.v1 ChangeLog.libgcj configure.host \
src/ia64/unix.S src/mips/ffi.c src/mips/n32.S src/mips/o32.S \ src/ia64/unix.S src/mips/ffi.c src/mips/n32.S src/mips/o32.S \
src/mips/ffitarget.h src/m32r/ffi.c src/m32r/sysv.S \ src/mips/ffitarget.h src/m32r/ffi.c src/m32r/sysv.S \
src/m32r/ffitarget.h src/m68k/ffi.c src/m68k/sysv.S \ src/m32r/ffitarget.h src/m68k/ffi.c src/m68k/sysv.S \
src/m68k/ffitarget.h src/powerpc/ffi.c src/powerpc/sysv.S \ src/m68k/ffitarget.h \
src/powerpc/linux64.S src/powerpc/linux64_closure.S \ src/powerpc/ffi.c src/powerpc/ffi_powerpc.h \
src/powerpc/ppc_closure.S src/powerpc/asm.h \ src/powerpc/ffi_sysv.c src/powerpc/ffi_linux64.c \
src/powerpc/aix.S src/powerpc/darwin.S \ src/powerpc/sysv.S src/powerpc/linux64.S \
src/powerpc/linux64_closure.S src/powerpc/ppc_closure.S \
src/powerpc/asm.h src/powerpc/aix.S src/powerpc/darwin.S \
src/powerpc/aix_closure.S src/powerpc/darwin_closure.S \ src/powerpc/aix_closure.S src/powerpc/darwin_closure.S \
src/powerpc/ffi_darwin.c src/powerpc/ffitarget.h \ src/powerpc/ffi_darwin.c src/powerpc/ffitarget.h \
src/s390/ffi.c src/s390/sysv.S src/s390/ffitarget.h \ src/s390/ffi.c src/s390/sysv.S src/s390/ffitarget.h \
...@@ -179,7 +181,7 @@ if M68K ...@@ -179,7 +181,7 @@ if M68K
nodist_libffi_la_SOURCES += src/m68k/ffi.c src/m68k/sysv.S nodist_libffi_la_SOURCES += src/m68k/ffi.c src/m68k/sysv.S
endif endif
if POWERPC if POWERPC
nodist_libffi_la_SOURCES += src/powerpc/ffi.c src/powerpc/sysv.S src/powerpc/ppc_closure.S src/powerpc/linux64.S src/powerpc/linux64_closure.S nodist_libffi_la_SOURCES += src/powerpc/ffi.c src/powerpc/ffi_sysv.c src/powerpc/ffi_linux64.c src/powerpc/sysv.S src/powerpc/ppc_closure.S src/powerpc/linux64.S src/powerpc/linux64_closure.S
endif endif
if POWERPC_AIX if POWERPC_AIX
nodist_libffi_la_SOURCES += src/powerpc/ffi_darwin.c src/powerpc/aix.S src/powerpc/aix_closure.S nodist_libffi_la_SOURCES += src/powerpc/ffi_darwin.c src/powerpc/aix.S src/powerpc/aix_closure.S
...@@ -188,7 +190,7 @@ if POWERPC_DARWIN ...@@ -188,7 +190,7 @@ if POWERPC_DARWIN
nodist_libffi_la_SOURCES += src/powerpc/ffi_darwin.c src/powerpc/darwin.S src/powerpc/darwin_closure.S nodist_libffi_la_SOURCES += src/powerpc/ffi_darwin.c src/powerpc/darwin.S src/powerpc/darwin_closure.S
endif endif
if POWERPC_FREEBSD if POWERPC_FREEBSD
nodist_libffi_la_SOURCES += src/powerpc/ffi.c src/powerpc/sysv.S src/powerpc/ppc_closure.S nodist_libffi_la_SOURCES += src/powerpc/ffi.c src/powerpc/ffi_sysv.c src/powerpc/sysv.S src/powerpc/ppc_closure.S
endif endif
if AARCH64 if AARCH64
nodist_libffi_la_SOURCES += src/aarch64/sysv.S src/aarch64/ffi.c nodist_libffi_la_SOURCES += src/aarch64/sysv.S src/aarch64/ffi.c
......
libffi/Makefile.in
...@@ -48,10 +48,10 @@ target_triplet = @target@ ...@@ -48,10 +48,10 @@ target_triplet = @target@
@IA64_TRUE@am__append_11 = src/ia64/ffi.c src/ia64/unix.S @IA64_TRUE@am__append_11 = src/ia64/ffi.c src/ia64/unix.S
@M32R_TRUE@am__append_12 = src/m32r/sysv.S src/m32r/ffi.c @M32R_TRUE@am__append_12 = src/m32r/sysv.S src/m32r/ffi.c
@M68K_TRUE@am__append_13 = src/m68k/ffi.c src/m68k/sysv.S @M68K_TRUE@am__append_13 = src/m68k/ffi.c src/m68k/sysv.S
@POWERPC_TRUE@am__append_14 = src/powerpc/ffi.c src/powerpc/sysv.S src/powerpc/ppc_closure.S src/powerpc/linux64.S src/powerpc/linux64_closure.S @POWERPC_TRUE@am__append_14 = src/powerpc/ffi.c src/powerpc/ffi_sysv.c src/powerpc/ffi_linux64.c src/powerpc/sysv.S src/powerpc/ppc_closure.S src/powerpc/linux64.S src/powerpc/linux64_closure.S
@POWERPC_AIX_TRUE@am__append_15 = src/powerpc/ffi_darwin.c src/powerpc/aix.S src/powerpc/aix_closure.S @POWERPC_AIX_TRUE@am__append_15 = src/powerpc/ffi_darwin.c src/powerpc/aix.S src/powerpc/aix_closure.S
@POWERPC_DARWIN_TRUE@am__append_16 = src/powerpc/ffi_darwin.c src/powerpc/darwin.S src/powerpc/darwin_closure.S @POWERPC_DARWIN_TRUE@am__append_16 = src/powerpc/ffi_darwin.c src/powerpc/darwin.S src/powerpc/darwin_closure.S
@POWERPC_FREEBSD_TRUE@am__append_17 = src/powerpc/ffi.c src/powerpc/sysv.S src/powerpc/ppc_closure.S @POWERPC_FREEBSD_TRUE@am__append_17 = src/powerpc/ffi.c src/powerpc/ffi_sysv.c src/powerpc/sysv.S src/powerpc/ppc_closure.S
@AARCH64_TRUE@am__append_18 = src/aarch64/sysv.S src/aarch64/ffi.c @AARCH64_TRUE@am__append_18 = src/aarch64/sysv.S src/aarch64/ffi.c
@ARM_TRUE@am__append_19 = src/arm/sysv.S src/arm/ffi.c @ARM_TRUE@am__append_19 = src/arm/sysv.S src/arm/ffi.c
@ARM_TRUE@@FFI_EXEC_TRAMPOLINE_TABLE_TRUE@am__append_20 = src/arm/trampoline.S @ARM_TRUE@@FFI_EXEC_TRAMPOLINE_TABLE_TRUE@am__append_20 = src/arm/trampoline.S
...@@ -136,7 +136,9 @@ am_libffi_la_OBJECTS = src/prep_cif.lo src/types.lo src/raw_api.lo \ ...@@ -136,7 +136,9 @@ am_libffi_la_OBJECTS = src/prep_cif.lo src/types.lo src/raw_api.lo \
@IA64_TRUE@am__objects_11 = src/ia64/ffi.lo src/ia64/unix.lo @IA64_TRUE@am__objects_11 = src/ia64/ffi.lo src/ia64/unix.lo
@M32R_TRUE@am__objects_12 = src/m32r/sysv.lo src/m32r/ffi.lo @M32R_TRUE@am__objects_12 = src/m32r/sysv.lo src/m32r/ffi.lo
@M68K_TRUE@am__objects_13 = src/m68k/ffi.lo src/m68k/sysv.lo @M68K_TRUE@am__objects_13 = src/m68k/ffi.lo src/m68k/sysv.lo
@POWERPC_TRUE@am__objects_14 = src/powerpc/ffi.lo src/powerpc/sysv.lo \ @POWERPC_TRUE@am__objects_14 = src/powerpc/ffi.lo \
@POWERPC_TRUE@ src/powerpc/ffi_sysv.lo \
@POWERPC_TRUE@ src/powerpc/ffi_linux64.lo src/powerpc/sysv.lo \
@POWERPC_TRUE@ src/powerpc/ppc_closure.lo \ @POWERPC_TRUE@ src/powerpc/ppc_closure.lo \
@POWERPC_TRUE@ src/powerpc/linux64.lo \ @POWERPC_TRUE@ src/powerpc/linux64.lo \
@POWERPC_TRUE@ src/powerpc/linux64_closure.lo @POWERPC_TRUE@ src/powerpc/linux64_closure.lo
...@@ -147,6 +149,7 @@ am_libffi_la_OBJECTS = src/prep_cif.lo src/types.lo src/raw_api.lo \ ...@@ -147,6 +149,7 @@ am_libffi_la_OBJECTS = src/prep_cif.lo src/types.lo src/raw_api.lo \
@POWERPC_DARWIN_TRUE@ src/powerpc/darwin.lo \ @POWERPC_DARWIN_TRUE@ src/powerpc/darwin.lo \
@POWERPC_DARWIN_TRUE@ src/powerpc/darwin_closure.lo @POWERPC_DARWIN_TRUE@ src/powerpc/darwin_closure.lo
@POWERPC_FREEBSD_TRUE@am__objects_17 = src/powerpc/ffi.lo \ @POWERPC_FREEBSD_TRUE@am__objects_17 = src/powerpc/ffi.lo \
@POWERPC_FREEBSD_TRUE@ src/powerpc/ffi_sysv.lo \
@POWERPC_FREEBSD_TRUE@ src/powerpc/sysv.lo \ @POWERPC_FREEBSD_TRUE@ src/powerpc/sysv.lo \
@POWERPC_FREEBSD_TRUE@ src/powerpc/ppc_closure.lo @POWERPC_FREEBSD_TRUE@ src/powerpc/ppc_closure.lo
@AARCH64_TRUE@am__objects_18 = src/aarch64/sysv.lo src/aarch64/ffi.lo @AARCH64_TRUE@am__objects_18 = src/aarch64/sysv.lo src/aarch64/ffi.lo
...@@ -319,6 +322,7 @@ FFI_EXEC_TRAMPOLINE_TABLE = @FFI_EXEC_TRAMPOLINE_TABLE@ ...@@ -319,6 +322,7 @@ FFI_EXEC_TRAMPOLINE_TABLE = @FFI_EXEC_TRAMPOLINE_TABLE@
FGREP = @FGREP@ FGREP = @FGREP@
GREP = @GREP@ GREP = @GREP@
HAVE_LONG_DOUBLE = @HAVE_LONG_DOUBLE@ HAVE_LONG_DOUBLE = @HAVE_LONG_DOUBLE@
HAVE_LONG_DOUBLE_VARIANT = @HAVE_LONG_DOUBLE_VARIANT@
INSTALL = @INSTALL@ INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@ INSTALL_DATA = @INSTALL_DATA@
INSTALL_PROGRAM = @INSTALL_PROGRAM@ INSTALL_PROGRAM = @INSTALL_PROGRAM@
...@@ -428,10 +432,12 @@ EXTRA_DIST = LICENSE ChangeLog.v1 ChangeLog.libgcj configure.host \ ...@@ -428,10 +432,12 @@ EXTRA_DIST = LICENSE ChangeLog.v1 ChangeLog.libgcj configure.host \
src/ia64/unix.S src/mips/ffi.c src/mips/n32.S src/mips/o32.S \ src/ia64/unix.S src/mips/ffi.c src/mips/n32.S src/mips/o32.S \
src/mips/ffitarget.h src/m32r/ffi.c src/m32r/sysv.S \ src/mips/ffitarget.h src/m32r/ffi.c src/m32r/sysv.S \
src/m32r/ffitarget.h src/m68k/ffi.c src/m68k/sysv.S \ src/m32r/ffitarget.h src/m68k/ffi.c src/m68k/sysv.S \
src/m68k/ffitarget.h src/powerpc/ffi.c src/powerpc/sysv.S \ src/m68k/ffitarget.h \
src/powerpc/linux64.S src/powerpc/linux64_closure.S \ src/powerpc/ffi.c src/powerpc/ffi_powerpc.h \
src/powerpc/ppc_closure.S src/powerpc/asm.h \ src/powerpc/ffi_sysv.c src/powerpc/ffi_linux64.c \
src/powerpc/aix.S src/powerpc/darwin.S \ src/powerpc/sysv.S src/powerpc/linux64.S \
src/powerpc/linux64_closure.S src/powerpc/ppc_closure.S \
src/powerpc/asm.h src/powerpc/aix.S src/powerpc/darwin.S \
src/powerpc/aix_closure.S src/powerpc/darwin_closure.S \ src/powerpc/aix_closure.S src/powerpc/darwin_closure.S \
src/powerpc/ffi_darwin.c src/powerpc/ffitarget.h \ src/powerpc/ffi_darwin.c src/powerpc/ffitarget.h \
src/s390/ffi.c src/s390/sysv.S src/s390/ffitarget.h \ src/s390/ffi.c src/s390/sysv.S src/s390/ffitarget.h \
...@@ -752,6 +758,10 @@ src/powerpc/$(DEPDIR)/$(am__dirstamp): ...@@ -752,6 +758,10 @@ src/powerpc/$(DEPDIR)/$(am__dirstamp):
@: > src/powerpc/$(DEPDIR)/$(am__dirstamp) @: > src/powerpc/$(DEPDIR)/$(am__dirstamp)
src/powerpc/ffi.lo: src/powerpc/$(am__dirstamp) \ src/powerpc/ffi.lo: src/powerpc/$(am__dirstamp) \
src/powerpc/$(DEPDIR)/$(am__dirstamp) src/powerpc/$(DEPDIR)/$(am__dirstamp)
src/powerpc/ffi_sysv.lo: src/powerpc/$(am__dirstamp) \
src/powerpc/$(DEPDIR)/$(am__dirstamp)
src/powerpc/ffi_linux64.lo: src/powerpc/$(am__dirstamp) \
src/powerpc/$(DEPDIR)/$(am__dirstamp)
src/powerpc/sysv.lo: src/powerpc/$(am__dirstamp) \ src/powerpc/sysv.lo: src/powerpc/$(am__dirstamp) \
src/powerpc/$(DEPDIR)/$(am__dirstamp) src/powerpc/$(DEPDIR)/$(am__dirstamp)
src/powerpc/ppc_closure.lo: src/powerpc/$(am__dirstamp) \ src/powerpc/ppc_closure.lo: src/powerpc/$(am__dirstamp) \
...@@ -953,6 +963,10 @@ mostlyclean-compile: ...@@ -953,6 +963,10 @@ mostlyclean-compile:
-rm -f src/powerpc/ffi.lo -rm -f src/powerpc/ffi.lo
-rm -f src/powerpc/ffi_darwin.$(OBJEXT) -rm -f src/powerpc/ffi_darwin.$(OBJEXT)
-rm -f src/powerpc/ffi_darwin.lo -rm -f src/powerpc/ffi_darwin.lo
-rm -f src/powerpc/ffi_linux64.$(OBJEXT)
-rm -f src/powerpc/ffi_linux64.lo
-rm -f src/powerpc/ffi_sysv.$(OBJEXT)
-rm -f src/powerpc/ffi_sysv.lo
-rm -f src/powerpc/linux64.$(OBJEXT) -rm -f src/powerpc/linux64.$(OBJEXT)
-rm -f src/powerpc/linux64.lo -rm -f src/powerpc/linux64.lo
-rm -f src/powerpc/linux64_closure.$(OBJEXT) -rm -f src/powerpc/linux64_closure.$(OBJEXT)
...@@ -1050,6 +1064,8 @@ distclean-compile: ...@@ -1050,6 +1064,8 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/darwin_closure.Plo@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/darwin_closure.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/ffi.Plo@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/ffi.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/ffi_darwin.Plo@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/ffi_darwin.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/ffi_linux64.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/ffi_sysv.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/linux64.Plo@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/linux64.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/linux64_closure.Plo@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/linux64_closure.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/ppc_closure.Plo@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/powerpc/$(DEPDIR)/ppc_closure.Plo@am__quote@
......
libffi/configure
...@@ -613,6 +613,7 @@ TARGET ...@@ -613,6 +613,7 @@ TARGET
FFI_EXEC_TRAMPOLINE_TABLE FFI_EXEC_TRAMPOLINE_TABLE
FFI_EXEC_TRAMPOLINE_TABLE_FALSE FFI_EXEC_TRAMPOLINE_TABLE_FALSE
FFI_EXEC_TRAMPOLINE_TABLE_TRUE FFI_EXEC_TRAMPOLINE_TABLE_TRUE
HAVE_LONG_DOUBLE_VARIANT
HAVE_LONG_DOUBLE HAVE_LONG_DOUBLE
ALLOCA ALLOCA
TILE_FALSE TILE_FALSE
...@@ -10906,7 +10907,7 @@ else ...@@ -10906,7 +10907,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF cat > conftest.$ac_ext <<_LT_EOF
#line 10909 "configure" #line 10910 "configure"
#include "confdefs.h" #include "confdefs.h"
#if HAVE_DLFCN_H #if HAVE_DLFCN_H
...@@ -11012,7 +11013,7 @@ else ...@@ -11012,7 +11013,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF cat > conftest.$ac_ext <<_LT_EOF
#line 11015 "configure" #line 11016 "configure"
#include "confdefs.h" #include "confdefs.h"
#if HAVE_DLFCN_H #if HAVE_DLFCN_H
...@@ -11449,6 +11450,7 @@ fi ...@@ -11449,6 +11450,7 @@ fi
TARGETDIR="unknown" TARGETDIR="unknown"
HAVE_LONG_DOUBLE_VARIANT=0
case "$host" in case "$host" in
aarch64*-*-*) aarch64*-*-*)
TARGET=AARCH64; TARGETDIR=aarch64 TARGET=AARCH64; TARGETDIR=aarch64
...@@ -11546,6 +11548,7 @@ case "$host" in ...@@ -11546,6 +11548,7 @@ case "$host" in
powerpc*-*-linux* | powerpc-*-sysv*) powerpc*-*-linux* | powerpc-*-sysv*)
TARGET=POWERPC; TARGETDIR=powerpc TARGET=POWERPC; TARGETDIR=powerpc
HAVE_LONG_DOUBLE_VARIANT=1
;; ;;
powerpc-*-amigaos*) powerpc-*-amigaos*)
TARGET=POWERPC; TARGETDIR=powerpc TARGET=POWERPC; TARGETDIR=powerpc
...@@ -11561,6 +11564,7 @@ case "$host" in ...@@ -11561,6 +11564,7 @@ case "$host" in
;; ;;
powerpc-*-freebsd* | powerpc-*-openbsd*) powerpc-*-freebsd* | powerpc-*-openbsd*)
TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
HAVE_LONG_DOUBLE_VARIANT=1
;; ;;
powerpc64-*-freebsd*) powerpc64-*-freebsd*)
TARGET=POWERPC; TARGETDIR=powerpc TARGET=POWERPC; TARGETDIR=powerpc
...@@ -12236,17 +12240,25 @@ _ACEOF ...@@ -12236,17 +12240,25 @@ _ACEOF
# Also AC_SUBST this variable for ffi.h. # Also AC_SUBST this variable for ffi.h.
if test -z "$HAVE_LONG_DOUBLE"; then if test -z "$HAVE_LONG_DOUBLE"; then
HAVE_LONG_DOUBLE=0 HAVE_LONG_DOUBLE=0
if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
if test $ac_cv_sizeof_long_double != 0; then if test $ac_cv_sizeof_long_double != 0; then
if test $HAVE_LONG_DOUBLE_VARIANT != 0; then
$as_echo "#define HAVE_LONG_DOUBLE_VARIANT 1" >>confdefs.h
HAVE_LONG_DOUBLE=1
else
if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
HAVE_LONG_DOUBLE=1 HAVE_LONG_DOUBLE=1
$as_echo "#define HAVE_LONG_DOUBLE 1" >>confdefs.h $as_echo "#define HAVE_LONG_DOUBLE 1" >>confdefs.h
fi fi
fi fi
fi
fi fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5
$as_echo_n "checking whether byte ordering is bigendian... " >&6; } $as_echo_n "checking whether byte ordering is bigendian... " >&6; }
if test "${ac_cv_c_bigendian+set}" = set; then : if test "${ac_cv_c_bigendian+set}" = set; then :
......
libffi/configure.ac
...@@ -65,6 +65,7 @@ dnl The -no-testsuite modules omit the test subdir. ...@@ -65,6 +65,7 @@ dnl The -no-testsuite modules omit the test subdir.
AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite) AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
TARGETDIR="unknown" TARGETDIR="unknown"
HAVE_LONG_DOUBLE_VARIANT=0
case "$host" in case "$host" in
aarch64*-*-*) aarch64*-*-*)
TARGET=AARCH64; TARGETDIR=aarch64 TARGET=AARCH64; TARGETDIR=aarch64
...@@ -162,6 +163,7 @@ case "$host" in ...@@ -162,6 +163,7 @@ case "$host" in
powerpc*-*-linux* | powerpc-*-sysv*) powerpc*-*-linux* | powerpc-*-sysv*)
TARGET=POWERPC; TARGETDIR=powerpc TARGET=POWERPC; TARGETDIR=powerpc
HAVE_LONG_DOUBLE_VARIANT=1
;; ;;
powerpc-*-amigaos*) powerpc-*-amigaos*)
TARGET=POWERPC; TARGETDIR=powerpc TARGET=POWERPC; TARGETDIR=powerpc
...@@ -177,6 +179,7 @@ case "$host" in ...@@ -177,6 +179,7 @@ case "$host" in
;; ;;
powerpc-*-freebsd* | powerpc-*-openbsd*) powerpc-*-freebsd* | powerpc-*-openbsd*)
TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
HAVE_LONG_DOUBLE_VARIANT=1
;; ;;
powerpc64-*-freebsd*) powerpc64-*-freebsd*)
TARGET=POWERPC; TARGETDIR=powerpc TARGET=POWERPC; TARGETDIR=powerpc
...@@ -273,14 +276,20 @@ AC_CHECK_SIZEOF(long double) ...@@ -273,14 +276,20 @@ AC_CHECK_SIZEOF(long double)
# Also AC_SUBST this variable for ffi.h. # Also AC_SUBST this variable for ffi.h.
if test -z "$HAVE_LONG_DOUBLE"; then if test -z "$HAVE_LONG_DOUBLE"; then
HAVE_LONG_DOUBLE=0 HAVE_LONG_DOUBLE=0
if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
if test $ac_cv_sizeof_long_double != 0; then if test $ac_cv_sizeof_long_double != 0; then
if test $HAVE_LONG_DOUBLE_VARIANT != 0; then
AC_DEFINE(HAVE_LONG_DOUBLE_VARIANT, 1, [Define if you support more than one size of the long double type])
HAVE_LONG_DOUBLE=1
else
if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
HAVE_LONG_DOUBLE=1 HAVE_LONG_DOUBLE=1
AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double]) AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
fi fi
fi fi
fi
fi fi
AC_SUBST(HAVE_LONG_DOUBLE) AC_SUBST(HAVE_LONG_DOUBLE)
AC_SUBST(HAVE_LONG_DOUBLE_VARIANT)
AC_C_BIGENDIAN AC_C_BIGENDIAN
......
libffi/fficonfig.h.in
...@@ -73,6 +73,9 @@ ...@@ -73,6 +73,9 @@
/* Define if you have the long double type and it is bigger than a double */ /* Define if you have the long double type and it is bigger than a double */
#undef HAVE_LONG_DOUBLE #undef HAVE_LONG_DOUBLE
/* Define if you support more than one size of the long double type */
#undef HAVE_LONG_DOUBLE_VARIANT
/* Define to 1 if you have the `memcpy' function. */ /* Define to 1 if you have the `memcpy' function. */
#undef HAVE_MEMCPY #undef HAVE_MEMCPY
......
libffi/include/Makefile.in
...@@ -115,6 +115,7 @@ FFI_EXEC_TRAMPOLINE_TABLE = @FFI_EXEC_TRAMPOLINE_TABLE@ ...@@ -115,6 +115,7 @@ FFI_EXEC_TRAMPOLINE_TABLE = @FFI_EXEC_TRAMPOLINE_TABLE@
FGREP = @FGREP@ FGREP = @FGREP@
GREP = @GREP@ GREP = @GREP@
HAVE_LONG_DOUBLE = @HAVE_LONG_DOUBLE@ HAVE_LONG_DOUBLE = @HAVE_LONG_DOUBLE@
HAVE_LONG_DOUBLE_VARIANT = @HAVE_LONG_DOUBLE_VARIANT@
INSTALL = @INSTALL@ INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@ INSTALL_DATA = @INSTALL_DATA@
INSTALL_PROGRAM = @INSTALL_PROGRAM@ INSTALL_PROGRAM = @INSTALL_PROGRAM@
......
libffi/include/ffi.h.in
...@@ -207,6 +207,11 @@ typedef struct { ...@@ -207,6 +207,11 @@ typedef struct {
#endif #endif
} ffi_cif; } ffi_cif;
#if HAVE_LONG_DOUBLE_VARIANT
/* Used to adjust size/alignment of ffi types. */
void ffi_prep_types (ffi_abi abi);
# endif
/* Used internally, but overridden by some architectures */ /* Used internally, but overridden by some architectures */
ffi_status ffi_prep_cif_core(ffi_cif *cif, ffi_status ffi_prep_cif_core(ffi_cif *cif,
ffi_abi abi, ffi_abi abi,
......
libffi/man/Makefile.in
...@@ -113,6 +113,7 @@ FFI_EXEC_TRAMPOLINE_TABLE = @FFI_EXEC_TRAMPOLINE_TABLE@ ...@@ -113,6 +113,7 @@ FFI_EXEC_TRAMPOLINE_TABLE = @FFI_EXEC_TRAMPOLINE_TABLE@
FGREP = @FGREP@ FGREP = @FGREP@
GREP = @GREP@ GREP = @GREP@
HAVE_LONG_DOUBLE = @HAVE_LONG_DOUBLE@ HAVE_LONG_DOUBLE = @HAVE_LONG_DOUBLE@
HAVE_LONG_DOUBLE_VARIANT = @HAVE_LONG_DOUBLE_VARIANT@
INSTALL = @INSTALL@ INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@ INSTALL_DATA = @INSTALL_DATA@
INSTALL_PROGRAM = @INSTALL_PROGRAM@ INSTALL_PROGRAM = @INSTALL_PROGRAM@
......
libffi/src/powerpc/ffi.c
/* ----------------------------------------------------------------------- /* -----------------------------------------------------------------------
ffi.c - Copyright (C) 2011 Anthony Green ffi.c - Copyright (C) 2013 IBM
Copyright (C) 2011 Anthony Green
Copyright (C) 2011 Kyle Moffett Copyright (C) 2011 Kyle Moffett
Copyright (C) 2008 Red Hat, Inc Copyright (C) 2008 Red Hat, Inc
Copyright (C) 2007, 2008 Free Software Foundation, Inc Copyright (C) 2007, 2008 Free Software Foundation, Inc
...@@ -27,1112 +28,60 @@ ...@@ -27,1112 +28,60 @@
OTHER DEALINGS IN THE SOFTWARE. OTHER DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */ ----------------------------------------------------------------------- */
#include <ffi.h> #include "ffi.h"
#include <ffi_common.h> #include "ffi_common.h"
#include "ffi_powerpc.h"
#include <stdlib.h>
#include <stdio.h>
extern void ffi_closure_SYSV (void);
extern void FFI_HIDDEN ffi_closure_LINUX64 (void);
enum {
/* The assembly depends on these exact flags. */
FLAG_RETURNS_SMST = 1 << (31-31), /* Used for FFI_SYSV small structs. */
FLAG_RETURNS_NOTHING = 1 << (31-30), /* These go in cr7 */
#ifndef __NO_FPRS__
FLAG_RETURNS_FP = 1 << (31-29),
#endif
FLAG_RETURNS_64BITS = 1 << (31-28),
FLAG_RETURNS_128BITS = 1 << (31-27), /* cr6 */
FLAG_ARG_NEEDS_COPY = 1 << (31- 7),
FLAG_ARG_NEEDS_PSAVE = FLAG_ARG_NEEDS_COPY, /* Used by ELFv2 */
#ifndef __NO_FPRS__
FLAG_FP_ARGUMENTS = 1 << (31- 6), /* cr1.eq; specified by ABI */
#endif
FLAG_4_GPR_ARGUMENTS = 1 << (31- 5),
FLAG_RETVAL_REFERENCE = 1 << (31- 4)
};
/* About the SYSV ABI. */
#define ASM_NEEDS_REGISTERS 4
#define NUM_GPR_ARG_REGISTERS 8
#ifndef __NO_FPRS__
# define NUM_FPR_ARG_REGISTERS 8
#endif
/* ffi_prep_args_SYSV is called by the assembly routine once stack space
has been allocated for the function's arguments.
The stack layout we want looks like this:
| Return address from ffi_call_SYSV 4bytes | higher addresses
|--------------------------------------------|
| Previous backchain pointer 4 | stack pointer here
|--------------------------------------------|<+ <<< on entry to
| Saved r28-r31 4*4 | | ffi_call_SYSV
|--------------------------------------------| |
| GPR registers r3-r10 8*4 | | ffi_call_SYSV
|--------------------------------------------| |
| FPR registers f1-f8 (optional) 8*8 | |
|--------------------------------------------| | stack |
| Space for copied structures | | grows |
|--------------------------------------------| | down V
| Parameters that didn't fit in registers | |
|--------------------------------------------| | lower addresses
| Space for callee's LR 4 | |
|--------------------------------------------| | stack pointer here
| Current backchain pointer 4 |-/ during
|--------------------------------------------| <<< ffi_call_SYSV
*/
void
ffi_prep_args_SYSV (extended_cif *ecif, unsigned *const stack)
{
const unsigned bytes = ecif->cif->bytes;
const unsigned flags = ecif->cif->flags;
typedef union {
char *c;
unsigned *u;
long long *ll;
float *f;
double *d;
} valp;
/* 'stacktop' points at the previous backchain pointer. */
valp stacktop;
/* 'gpr_base' points at the space for gpr3, and grows upwards as
we use GPR registers. */
valp gpr_base;
int intarg_count;
#ifndef __NO_FPRS__
/* 'fpr_base' points at the space for fpr1, and grows upwards as
we use FPR registers. */
valp fpr_base;
int fparg_count;
#endif
/* 'copy_space' grows down as we put structures in it. It should
stay 16-byte aligned. */
valp copy_space;
/* 'next_arg' grows up as we put parameters in it. */
valp next_arg;
int i;
ffi_type **ptr;
#ifndef __NO_FPRS__
double double_tmp;
#endif
union {
void **v;
char **c;
signed char **sc;
unsigned char **uc;
signed short **ss;
unsigned short **us;
unsigned int **ui;
long long **ll;
float **f;
double **d;
} p_argv;
size_t struct_copy_size;
unsigned gprvalue;
stacktop.c = (char *) stack + bytes;
gpr_base.u = stacktop.u - ASM_NEEDS_REGISTERS - NUM_GPR_ARG_REGISTERS;
intarg_count = 0;
#ifndef __NO_FPRS__
fpr_base.d = gpr_base.d - NUM_FPR_ARG_REGISTERS;
fparg_count = 0;
copy_space.c = ((flags & FLAG_FP_ARGUMENTS) ? fpr_base.c : gpr_base.c);
#else
copy_space.c = gpr_base.c;
#endif
next_arg.u = stack + 2;
/* Check that everything starts aligned properly. */
FFI_ASSERT (((unsigned long) (char *) stack & 0xF) == 0);
FFI_ASSERT (((unsigned long) copy_space.c & 0xF) == 0);
FFI_ASSERT (((unsigned long) stacktop.c & 0xF) == 0);
FFI_ASSERT ((bytes & 0xF) == 0);
FFI_ASSERT (copy_space.c >= next_arg.c);
/* Deal with return values that are actually pass-by-reference. */
if (flags & FLAG_RETVAL_REFERENCE)
{
*gpr_base.u++ = (unsigned long) (char *) ecif->rvalue;
intarg_count++;
}
/* Now for the arguments. */
p_argv.v = ecif->avalue;
for (ptr = ecif->cif->arg_types, i = ecif->cif->nargs;
i > 0;
i--, ptr++, p_argv.v++)
{
unsigned short typenum = (*ptr)->type;
/* We may need to handle some values depending on ABI */
if (ecif->cif->abi == FFI_LINUX_SOFT_FLOAT) {
if (typenum == FFI_TYPE_FLOAT)
typenum = FFI_TYPE_UINT32;
if (typenum == FFI_TYPE_DOUBLE)
typenum = FFI_TYPE_UINT64;
if (typenum == FFI_TYPE_LONGDOUBLE)
typenum = FFI_TYPE_UINT128;
} else if (ecif->cif->abi != FFI_LINUX) {
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
if (typenum == FFI_TYPE_LONGDOUBLE)
typenum = FFI_TYPE_STRUCT;
#endif
}
/* Now test the translated value */
switch (typenum) {
#ifndef __NO_FPRS__
case FFI_TYPE_FLOAT:
/* With FFI_LINUX_SOFT_FLOAT floats are handled like UINT32. */
double_tmp = **p_argv.f;
if (fparg_count >= NUM_FPR_ARG_REGISTERS)
{
*next_arg.f = (float) double_tmp;
next_arg.u += 1;
intarg_count++;
}
else
*fpr_base.d++ = double_tmp;
fparg_count++;
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
case FFI_TYPE_DOUBLE:
/* With FFI_LINUX_SOFT_FLOAT doubles are handled like UINT64. */
double_tmp = **p_argv.d;
if (fparg_count >= NUM_FPR_ARG_REGISTERS)
{
if (intarg_count >= NUM_GPR_ARG_REGISTERS
&& intarg_count % 2 != 0)
{
intarg_count++;
next_arg.u++;
}
*next_arg.d = double_tmp;
next_arg.u += 2;
}
else
*fpr_base.d++ = double_tmp;
fparg_count++;
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
double_tmp = (*p_argv.d)[0];
if (fparg_count >= NUM_FPR_ARG_REGISTERS - 1)
{
if (intarg_count >= NUM_GPR_ARG_REGISTERS
&& intarg_count % 2 != 0)
{
intarg_count++;
next_arg.u++;
}
*next_arg.d = double_tmp;
next_arg.u += 2;
double_tmp = (*p_argv.d)[1];
*next_arg.d = double_tmp;
next_arg.u += 2;
}
else
{
*fpr_base.d++ = double_tmp;
double_tmp = (*p_argv.d)[1];
*fpr_base.d++ = double_tmp;
}
fparg_count += 2;
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
#endif
#endif /* have FPRs */
/*
* The soft float ABI for long doubles works like this, a long double
* is passed in four consecutive GPRs if available. A maximum of 2
* long doubles can be passed in gprs. If we do not have 4 GPRs
* left, the long double is passed on the stack, 4-byte aligned.
*/
case FFI_TYPE_UINT128: {
unsigned int int_tmp = (*p_argv.ui)[0];
unsigned int ii;
if (intarg_count >= NUM_GPR_ARG_REGISTERS - 3) {
if (intarg_count < NUM_GPR_ARG_REGISTERS)
intarg_count += NUM_GPR_ARG_REGISTERS - intarg_count;
*(next_arg.u++) = int_tmp;
for (ii = 1; ii < 4; ii++) {
int_tmp = (*p_argv.ui)[ii];
*(next_arg.u++) = int_tmp;
}
} else {
*(gpr_base.u++) = int_tmp;
for (ii = 1; ii < 4; ii++) {
int_tmp = (*p_argv.ui)[ii];
*(gpr_base.u++) = int_tmp;
}
}
intarg_count += 4;
break;
}
case FFI_TYPE_UINT64:
case FFI_TYPE_SINT64:
if (intarg_count == NUM_GPR_ARG_REGISTERS-1)
intarg_count++;
if (intarg_count >= NUM_GPR_ARG_REGISTERS)
{
if (intarg_count % 2 != 0)
{
intarg_count++;
next_arg.u++;
}
*next_arg.ll = **p_argv.ll;
next_arg.u += 2;
}
else
{
/* whoops: abi states only certain register pairs
* can be used for passing long long int
* specifically (r3,r4), (r5,r6), (r7,r8),
* (r9,r10) and if next arg is long long but
* not correct starting register of pair then skip
* until the proper starting register
*/
if (intarg_count % 2 != 0)
{
intarg_count ++;
gpr_base.u++;
}
*gpr_base.ll++ = **p_argv.ll;
}
intarg_count += 2;
break;
case FFI_TYPE_STRUCT:
struct_copy_size = ((*ptr)->size + 15) & ~0xF;
copy_space.c -= struct_copy_size;
memcpy (copy_space.c, *p_argv.c, (*ptr)->size);
gprvalue = (unsigned long) copy_space.c;
FFI_ASSERT (copy_space.c > next_arg.c);
FFI_ASSERT (flags & FLAG_ARG_NEEDS_COPY);
goto putgpr;
case FFI_TYPE_UINT8:
gprvalue = **p_argv.uc;
goto putgpr;
case FFI_TYPE_SINT8:
gprvalue = **p_argv.sc;
goto putgpr;
case FFI_TYPE_UINT16:
gprvalue = **p_argv.us;
goto putgpr;
case FFI_TYPE_SINT16:
gprvalue = **p_argv.ss;
goto putgpr;
case FFI_TYPE_INT:
case FFI_TYPE_UINT32:
case FFI_TYPE_SINT32:
case FFI_TYPE_POINTER:
gprvalue = **p_argv.ui;
putgpr:
if (intarg_count >= NUM_GPR_ARG_REGISTERS)
*next_arg.u++ = gprvalue;
else
*gpr_base.u++ = gprvalue;
intarg_count++;
break;
}
}
/* Check that we didn't overrun the stack... */
FFI_ASSERT (copy_space.c >= next_arg.c);
FFI_ASSERT (gpr_base.u <= stacktop.u - ASM_NEEDS_REGISTERS);
/* The assert below is testing that the number of integer arguments agrees
with the number found in ffi_prep_cif_machdep(). However, intarg_count
is incremented whenever we place an FP arg on the stack, so account for
that before our assert test. */
#ifndef __NO_FPRS__
if (fparg_count > NUM_FPR_ARG_REGISTERS)
intarg_count -= fparg_count - NUM_FPR_ARG_REGISTERS;
FFI_ASSERT (fpr_base.u
<= stacktop.u - ASM_NEEDS_REGISTERS - NUM_GPR_ARG_REGISTERS);
#endif
FFI_ASSERT (flags & FLAG_4_GPR_ARGUMENTS || intarg_count <= 4);
}
/* About the LINUX64 ABI. */
enum {
NUM_GPR_ARG_REGISTERS64 = 8,
NUM_FPR_ARG_REGISTERS64 = 13
};
enum { ASM_NEEDS_REGISTERS64 = 4 };
#if _CALL_ELF == 2
static unsigned int
discover_homogeneous_aggregate (const ffi_type *t, unsigned int *elnum)
{
switch (t->type)
{
case FFI_TYPE_FLOAT:
case FFI_TYPE_DOUBLE:
*elnum = 1;
return (int) t->type;
case FFI_TYPE_STRUCT:;
{
unsigned int base_elt = 0, total_elnum = 0;
ffi_type **el = t->elements;
while (*el)
{
unsigned int el_elt, el_elnum = 0;
el_elt = discover_homogeneous_aggregate (*el, &el_elnum);
if (el_elt == 0
|| (base_elt && base_elt != el_elt))
return 0;
base_elt = el_elt;
total_elnum += el_elnum;
if (total_elnum > 8)
return 0;
el++;
}
*elnum = total_elnum;
return base_elt;
}
default:
return 0;
}
}
#endif
/* ffi_prep_args64 is called by the assembly routine once stack space
has been allocated for the function's arguments.
The stack layout we want looks like this:
| Ret addr from ffi_call_LINUX64 8bytes | higher addresses
|--------------------------------------------|
| CR save area 8bytes |
|--------------------------------------------|
| Previous backchain pointer 8 | stack pointer here
|--------------------------------------------|<+ <<< on entry to
| Saved r28-r31 4*8 | | ffi_call_LINUX64
|--------------------------------------------| |
| GPR registers r3-r10 8*8 | |
|--------------------------------------------| |
| FPR registers f1-f13 (optional) 13*8 | |
|--------------------------------------------| |
| Parameter save area | |
|--------------------------------------------| |
| TOC save area 8 | |
|--------------------------------------------| | stack |
| Linker doubleword 8 | | grows |
|--------------------------------------------| | down V
| Compiler doubleword 8 | |
|--------------------------------------------| | lower addresses
| Space for callee's LR 8 | |
|--------------------------------------------| |
| CR save area 8 | |
|--------------------------------------------| | stack pointer here
| Current backchain pointer 8 |-/ during
|--------------------------------------------| <<< ffi_call_LINUX64
*/
#if HAVE_LONG_DOUBLE_VARIANT
/* Adjust ffi_type_longdouble. */
void FFI_HIDDEN void FFI_HIDDEN
ffi_prep_args64 (extended_cif *ecif, unsigned long *const stack) ffi_prep_types (ffi_abi abi)
{ {
const unsigned long bytes = ecif->cif->bytes; # if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
const unsigned long flags = ecif->cif->flags; # ifdef POWERPC64
ffi_prep_types_linux64 (abi);
typedef union { # else
char *c; ffi_prep_types_sysv (abi);
unsigned long *ul; # endif
float *f; # endif
double *d;
size_t p;
} valp;
/* 'stacktop' points at the previous backchain pointer. */
valp stacktop;
/* 'next_arg' points at the space for gpr3, and grows upwards as
we use GPR registers, then continues at rest. */
valp gpr_base;
valp gpr_end;
valp rest;
valp next_arg;
/* 'fpr_base' points at the space for fpr3, and grows upwards as
we use FPR registers. */
valp fpr_base;
unsigned int fparg_count;
unsigned int i, words, nargs, nfixedargs;
ffi_type **ptr;
double double_tmp;
union {
void **v;
char **c;
signed char **sc;
unsigned char **uc;
signed short **ss;
unsigned short **us;
signed int **si;
unsigned int **ui;
unsigned long **ul;
float **f;
double **d;
} p_argv;
unsigned long gprvalue;
#ifdef __STRUCT_PARM_ALIGN__
unsigned long align;
#endif
stacktop.c = (char *) stack + bytes;
gpr_base.ul = stacktop.ul - ASM_NEEDS_REGISTERS64 - NUM_GPR_ARG_REGISTERS64;
gpr_end.ul = gpr_base.ul + NUM_GPR_ARG_REGISTERS64;
#if _CALL_ELF == 2
rest.ul = stack + 4 + NUM_GPR_ARG_REGISTERS64;
#else
rest.ul = stack + 6 + NUM_GPR_ARG_REGISTERS64;
#endif
fpr_base.d = gpr_base.d - NUM_FPR_ARG_REGISTERS64;
fparg_count = 0;
next_arg.ul = gpr_base.ul;
/* Check that everything starts aligned properly. */
FFI_ASSERT (((unsigned long) (char *) stack & 0xF) == 0);
FFI_ASSERT (((unsigned long) stacktop.c & 0xF) == 0);
FFI_ASSERT ((bytes & 0xF) == 0);
/* Deal with return values that are actually pass-by-reference. */
if (flags & FLAG_RETVAL_REFERENCE)
*next_arg.ul++ = (unsigned long) (char *) ecif->rvalue;
/* Now for the arguments. */
p_argv.v = ecif->avalue;
nargs = ecif->cif->nargs;
nfixedargs = ecif->cif->nfixedargs;
for (ptr = ecif->cif->arg_types, i = 0;
i < nargs;
i++, ptr++, p_argv.v++)
{
unsigned int elt, elnum;
switch ((*ptr)->type)
{
case FFI_TYPE_FLOAT:
double_tmp = **p_argv.f;
if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
*fpr_base.d++ = double_tmp;
else
*next_arg.f = (float) double_tmp;
if (++next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
fparg_count++;
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
case FFI_TYPE_DOUBLE:
double_tmp = **p_argv.d;
if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
*fpr_base.d++ = double_tmp;
else
*next_arg.d = double_tmp;
if (++next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
fparg_count++;
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
double_tmp = (*p_argv.d)[0];
if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
*fpr_base.d++ = double_tmp;
else
*next_arg.d = double_tmp;
if (++next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
fparg_count++;
double_tmp = (*p_argv.d)[1];
if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
*fpr_base.d++ = double_tmp;
else
*next_arg.d = double_tmp;
if (++next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
fparg_count++;
FFI_ASSERT (__LDBL_MANT_DIG__ == 106);
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
#endif
case FFI_TYPE_STRUCT:
#ifdef __STRUCT_PARM_ALIGN__
align = (*ptr)->alignment;
if (align > __STRUCT_PARM_ALIGN__)
align = __STRUCT_PARM_ALIGN__;
if (align > 1)
next_arg.p = ALIGN (next_arg.p, align);
#endif
elt = 0;
#if _CALL_ELF == 2
elt = discover_homogeneous_aggregate (*ptr, &elnum);
#endif
if (elt)
{
union {
void *v;
float *f;
double *d;
} arg;
arg.v = *p_argv.v;
if (elt == FFI_TYPE_FLOAT)
{
do
{
double_tmp = *arg.f++;
if (fparg_count < NUM_FPR_ARG_REGISTERS64
&& i < nfixedargs)
*fpr_base.d++ = double_tmp;
else
*next_arg.f = (float) double_tmp;
if (++next_arg.f == gpr_end.f)
next_arg.f = rest.f;
fparg_count++;
}
while (--elnum != 0);
if ((next_arg.p & 3) != 0)
{
if (++next_arg.f == gpr_end.f)
next_arg.f = rest.f;
}
}
else
do
{
double_tmp = *arg.d++;
if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
*fpr_base.d++ = double_tmp;
else
*next_arg.d = double_tmp;
if (++next_arg.d == gpr_end.d)
next_arg.d = rest.d;
fparg_count++;
}
while (--elnum != 0);
}
else
{
words = ((*ptr)->size + 7) / 8;
if (next_arg.ul >= gpr_base.ul && next_arg.ul + words > gpr_end.ul)
{
size_t first = gpr_end.c - next_arg.c;
memcpy (next_arg.c, *p_argv.c, first);
memcpy (rest.c, *p_argv.c + first, (*ptr)->size - first);
next_arg.c = rest.c + words * 8 - first;
}
else
{
char *where = next_arg.c;
#ifndef __LITTLE_ENDIAN__
/* Structures with size less than eight bytes are passed
left-padded. */
if ((*ptr)->size < 8)
where += 8 - (*ptr)->size;
#endif
memcpy (where, *p_argv.c, (*ptr)->size);
next_arg.ul += words;
if (next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
}
}
break;
case FFI_TYPE_UINT8:
gprvalue = **p_argv.uc;
goto putgpr;
case FFI_TYPE_SINT8:
gprvalue = **p_argv.sc;
goto putgpr;
case FFI_TYPE_UINT16:
gprvalue = **p_argv.us;
goto putgpr;
case FFI_TYPE_SINT16:
gprvalue = **p_argv.ss;
goto putgpr;
case FFI_TYPE_UINT32:
gprvalue = **p_argv.ui;
goto putgpr;
case FFI_TYPE_INT:
case FFI_TYPE_SINT32:
gprvalue = **p_argv.si;
goto putgpr;
case FFI_TYPE_UINT64:
case FFI_TYPE_SINT64:
case FFI_TYPE_POINTER:
gprvalue = **p_argv.ul;
putgpr:
*next_arg.ul++ = gprvalue;
if (next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
break;
}
}
FFI_ASSERT (flags & FLAG_4_GPR_ARGUMENTS
|| (next_arg.ul >= gpr_base.ul
&& next_arg.ul <= gpr_base.ul + 4));
} }
#endif
/* Perform machine dependent cif processing */ /* Perform machine dependent cif processing */
static ffi_status ffi_status FFI_HIDDEN
ffi_prep_cif_machdep_core (ffi_cif *cif) ffi_prep_cif_machdep (ffi_cif *cif)
{ {
/* All this is for the SYSV and LINUX64 ABI. */ #ifdef POWERPC64
ffi_type **ptr; return ffi_prep_cif_linux64 (cif);
unsigned bytes;
unsigned i, fparg_count = 0, intarg_count = 0;
unsigned flags = cif->flags;
unsigned struct_copy_size = 0;
unsigned type = cif->rtype->type;
unsigned size = cif->rtype->size;
/* The machine-independent calculation of cif->bytes doesn't work
for us. Redo the calculation. */
if (cif->abi != FFI_LINUX64)
{
/* Space for the frame pointer, callee's LR, and the asm's temp regs. */
bytes = (2 + ASM_NEEDS_REGISTERS) * sizeof (int);
/* Space for the GPR registers. */
bytes += NUM_GPR_ARG_REGISTERS * sizeof (int);
}
else
{
/* 64-bit ABI. */
#if _CALL_ELF == 2
/* Space for backchain, CR, LR, TOC and the asm's temp regs. */
bytes = (4 + ASM_NEEDS_REGISTERS64) * sizeof (long);
/* Space for the general registers. */
bytes += NUM_GPR_ARG_REGISTERS64 * sizeof (long);
#else
/* Space for backchain, CR, LR, cc/ld doubleword, TOC and the asm's temp
regs. */
bytes = (6 + ASM_NEEDS_REGISTERS64) * sizeof (long);
/* Space for the mandatory parm save area and general registers. */
bytes += 2 * NUM_GPR_ARG_REGISTERS64 * sizeof (long);
#endif
}
/* Return value handling. The rules for SYSV are as follows:
- 32-bit (or less) integer values are returned in gpr3;
- Structures of size <= 4 bytes also returned in gpr3;
- 64-bit integer values and structures between 5 and 8 bytes are returned
in gpr3 and gpr4;
- Single/double FP values are returned in fpr1;
- Larger structures are allocated space and a pointer is passed as
the first argument.
- long doubles (if not equivalent to double) are returned in
fpr1,fpr2 for Linux and as for large structs for SysV.
For LINUX64:
- integer values in gpr3;
- Structures/Unions by reference;
- Single/double FP values in fpr1, long double in fpr1,fpr2.
- soft-float float/doubles are treated as UINT32/UINT64 respectivley.
- soft-float long doubles are returned in gpr3-gpr6. */
/* First translate for softfloat/nonlinux */
if (cif->abi == FFI_LINUX_SOFT_FLOAT)
{
if (type == FFI_TYPE_FLOAT)
type = FFI_TYPE_UINT32;
if (type == FFI_TYPE_DOUBLE)
type = FFI_TYPE_UINT64;
if (type == FFI_TYPE_LONGDOUBLE)
type = FFI_TYPE_UINT128;
}
else if (cif->abi != FFI_LINUX
&& cif->abi != FFI_LINUX64)
{
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
if (type == FFI_TYPE_LONGDOUBLE)
type = FFI_TYPE_STRUCT;
#endif
}
switch (type)
{
#ifndef __NO_FPRS__
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
flags |= FLAG_RETURNS_128BITS;
/* Fall through. */
#endif
case FFI_TYPE_DOUBLE:
flags |= FLAG_RETURNS_64BITS;
/* Fall through. */
case FFI_TYPE_FLOAT:
flags |= FLAG_RETURNS_FP;
break;
#endif
case FFI_TYPE_UINT128:
flags |= FLAG_RETURNS_128BITS;
/* Fall through. */
case FFI_TYPE_UINT64:
case FFI_TYPE_SINT64:
flags |= FLAG_RETURNS_64BITS;
break;
case FFI_TYPE_STRUCT:
/*
* The final SYSV ABI says that structures smaller or equal 8 bytes
* are returned in r3/r4. The FFI_GCC_SYSV ABI instead returns them
* in memory.
*
* NOTE: The assembly code can safely assume that it just needs to
* store both r3 and r4 into a 8-byte word-aligned buffer, as
* we allocate a temporary buffer in ffi_call() if this flag is
* set.
*/
if (cif->abi == FFI_SYSV && size <= 8)
{
flags |= FLAG_RETURNS_SMST;
break;
}
#if _CALL_ELF == 2
if (cif->abi == FFI_LINUX64)
{
unsigned int elt, elnum;
elt = discover_homogeneous_aggregate (cif->rtype, &elnum);
if (elt)
{
if (elt == FFI_TYPE_DOUBLE)
flags |= FLAG_RETURNS_64BITS;
flags |= FLAG_RETURNS_FP | FLAG_RETURNS_SMST;
break;
}
if (size <= 16)
{
flags |= FLAG_RETURNS_SMST;
break;
}
}
#endif
intarg_count++;
flags |= FLAG_RETVAL_REFERENCE;
/* Fall through. */
case FFI_TYPE_VOID:
flags |= FLAG_RETURNS_NOTHING;
break;
default:
/* Returns 32-bit integer, or similar. Nothing to do here. */
break;
}
if (cif->abi != FFI_LINUX64)
/* The first NUM_GPR_ARG_REGISTERS words of integer arguments, and the
first NUM_FPR_ARG_REGISTERS fp arguments, go in registers; the rest
goes on the stack. Structures and long doubles (if not equivalent
to double) are passed as a pointer to a copy of the structure.
Stuff on the stack needs to keep proper alignment. */
for (ptr = cif->arg_types, i = cif->nargs; i > 0; i--, ptr++)
{
unsigned short typenum = (*ptr)->type;
/* We may need to handle some values depending on ABI */
if (cif->abi == FFI_LINUX_SOFT_FLOAT) {
if (typenum == FFI_TYPE_FLOAT)
typenum = FFI_TYPE_UINT32;
if (typenum == FFI_TYPE_DOUBLE)
typenum = FFI_TYPE_UINT64;
if (typenum == FFI_TYPE_LONGDOUBLE)
typenum = FFI_TYPE_UINT128;
} else if (cif->abi != FFI_LINUX && cif->abi != FFI_LINUX64) {
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
if (typenum == FFI_TYPE_LONGDOUBLE)
typenum = FFI_TYPE_STRUCT;
#endif
}
switch (typenum) {
#ifndef __NO_FPRS__
case FFI_TYPE_FLOAT:
fparg_count++;
/* floating singles are not 8-aligned on stack */
break;
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
fparg_count++;
/* Fall thru */
#endif
case FFI_TYPE_DOUBLE:
fparg_count++;
/* If this FP arg is going on the stack, it must be
8-byte-aligned. */
if (fparg_count > NUM_FPR_ARG_REGISTERS
&& intarg_count >= NUM_GPR_ARG_REGISTERS
&& intarg_count % 2 != 0)
intarg_count++;
break;
#endif
case FFI_TYPE_UINT128:
/*
* A long double in FFI_LINUX_SOFT_FLOAT can use only a set
* of four consecutive gprs. If we do not have enough, we
* have to adjust the intarg_count value.
*/
if (intarg_count >= NUM_GPR_ARG_REGISTERS - 3
&& intarg_count < NUM_GPR_ARG_REGISTERS)
intarg_count = NUM_GPR_ARG_REGISTERS;
intarg_count += 4;
break;
case FFI_TYPE_UINT64:
case FFI_TYPE_SINT64:
/* 'long long' arguments are passed as two words, but
either both words must fit in registers or both go
on the stack. If they go on the stack, they must
be 8-byte-aligned.
Also, only certain register pairs can be used for
passing long long int -- specifically (r3,r4), (r5,r6),
(r7,r8), (r9,r10).
*/
if (intarg_count == NUM_GPR_ARG_REGISTERS-1
|| intarg_count % 2 != 0)
intarg_count++;
intarg_count += 2;
break;
case FFI_TYPE_STRUCT:
/* We must allocate space for a copy of these to enforce
pass-by-value. Pad the space up to a multiple of 16
bytes (the maximum alignment required for anything under
the SYSV ABI). */
struct_copy_size += ((*ptr)->size + 15) & ~0xF;
/* Fall through (allocate space for the pointer). */
case FFI_TYPE_POINTER:
case FFI_TYPE_INT:
case FFI_TYPE_UINT32:
case FFI_TYPE_SINT32:
case FFI_TYPE_UINT16:
case FFI_TYPE_SINT16:
case FFI_TYPE_UINT8:
case FFI_TYPE_SINT8:
/* Everything else is passed as a 4-byte word in a GPR, either
the object itself or a pointer to it. */
intarg_count++;
break;
default:
FFI_ASSERT (0);
}
}
else
for (ptr = cif->arg_types, i = cif->nargs; i > 0; i--, ptr++)
{
unsigned int elt, elnum;
#ifdef __STRUCT_PARM_ALIGN__
unsigned int align;
#endif
switch ((*ptr)->type)
{
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
fparg_count += 2;
intarg_count += 2;
if (fparg_count > NUM_FPR_ARG_REGISTERS)
flags |= FLAG_ARG_NEEDS_PSAVE;
break;
#endif
case FFI_TYPE_FLOAT:
case FFI_TYPE_DOUBLE:
fparg_count++;
intarg_count++;
if (fparg_count > NUM_FPR_ARG_REGISTERS)
flags |= FLAG_ARG_NEEDS_PSAVE;
break;
case FFI_TYPE_STRUCT:
#ifdef __STRUCT_PARM_ALIGN__
align = (*ptr)->alignment;
if (align > __STRUCT_PARM_ALIGN__)
align = __STRUCT_PARM_ALIGN__;
align = align / 8;
if (align > 1)
intarg_count = ALIGN (intarg_count, align);
#endif
intarg_count += ((*ptr)->size + 7) / 8;
elt = 0;
#if _CALL_ELF == 2
elt = discover_homogeneous_aggregate (*ptr, &elnum);
#endif
if (elt)
{
fparg_count += elnum;
if (fparg_count > NUM_FPR_ARG_REGISTERS)
flags |= FLAG_ARG_NEEDS_PSAVE;
}
else
{
if (intarg_count > NUM_GPR_ARG_REGISTERS)
flags |= FLAG_ARG_NEEDS_PSAVE;
}
break;
case FFI_TYPE_POINTER:
case FFI_TYPE_UINT64:
case FFI_TYPE_SINT64:
case FFI_TYPE_INT:
case FFI_TYPE_UINT32:
case FFI_TYPE_SINT32:
case FFI_TYPE_UINT16:
case FFI_TYPE_SINT16:
case FFI_TYPE_UINT8:
case FFI_TYPE_SINT8:
/* Everything else is passed as a 8-byte word in a GPR, either
the object itself or a pointer to it. */
intarg_count++;
if (intarg_count > NUM_GPR_ARG_REGISTERS)
flags |= FLAG_ARG_NEEDS_PSAVE;
break;
default:
FFI_ASSERT (0);
}
}
#ifndef __NO_FPRS__
if (fparg_count != 0)
flags |= FLAG_FP_ARGUMENTS;
#endif
if (intarg_count > 4)
flags |= FLAG_4_GPR_ARGUMENTS;
if (struct_copy_size != 0)
flags |= FLAG_ARG_NEEDS_COPY;
if (cif->abi != FFI_LINUX64)
{
#ifndef __NO_FPRS__
/* Space for the FPR registers, if needed. */
if (fparg_count != 0)
bytes += NUM_FPR_ARG_REGISTERS * sizeof (double);
#endif
/* Stack space. */
if (intarg_count > NUM_GPR_ARG_REGISTERS)
bytes += (intarg_count - NUM_GPR_ARG_REGISTERS) * sizeof (int);
#ifndef __NO_FPRS__
if (fparg_count > NUM_FPR_ARG_REGISTERS)
bytes += (fparg_count - NUM_FPR_ARG_REGISTERS) * sizeof (double);
#endif
}
else
{
#ifndef __NO_FPRS__
/* Space for the FPR registers, if needed. */
if (fparg_count != 0)
bytes += NUM_FPR_ARG_REGISTERS64 * sizeof (double);
#endif
/* Stack space. */
#if _CALL_ELF == 2
if ((flags & FLAG_ARG_NEEDS_PSAVE) != 0)
bytes += intarg_count * sizeof (long);
#else #else
if (intarg_count > NUM_GPR_ARG_REGISTERS64) return ffi_prep_cif_sysv (cif);
bytes += (intarg_count - NUM_GPR_ARG_REGISTERS64) * sizeof (long);
#endif #endif
}
/* The stack space allocated needs to be a multiple of 16 bytes. */
bytes = (bytes + 15) & ~0xF;
/* Add in the space for the copied structures. */
bytes += struct_copy_size;
cif->flags = flags;
cif->bytes = bytes;
return FFI_OK;
}
ffi_status
ffi_prep_cif_machdep (ffi_cif *cif)
{
cif->nfixedargs = cif->nargs;
return ffi_prep_cif_machdep_core (cif);
} }
ffi_status ffi_status FFI_HIDDEN
ffi_prep_cif_machdep_var (ffi_cif *cif, ffi_prep_cif_machdep_var (ffi_cif *cif,
unsigned int nfixedargs, unsigned int nfixedargs MAYBE_UNUSED,
unsigned int ntotalargs MAYBE_UNUSED) unsigned int ntotalargs MAYBE_UNUSED)
{ {
cif->nfixedargs = nfixedargs; #ifdef POWERPC64
#if _CALL_ELF == 2 return ffi_prep_cif_linux64_var (cif, nfixedargs, ntotalargs);
if (cif->abi == FFI_LINUX64) #else
cif->flags |= FLAG_ARG_NEEDS_PSAVE; return ffi_prep_cif_sysv (cif);
#endif #endif
return ffi_prep_cif_machdep_core (cif);
} }
extern void ffi_call_SYSV(extended_cif *, unsigned, unsigned, unsigned *,
void (*fn)(void));
extern void FFI_HIDDEN ffi_call_LINUX64(extended_cif *, unsigned long,
unsigned long, unsigned long *,
void (*fn)(void));
void void
ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue) ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue)
{ {
/* /* The final SYSV ABI says that structures smaller or equal 8 bytes
* The final SYSV ABI says that structures smaller or equal 8 bytes are returned in r3/r4. A draft ABI used by linux instead returns
* are returned in r3/r4. The FFI_GCC_SYSV ABI instead returns them them in memory.
* in memory.
* We bounce-buffer SYSV small struct return values so that sysv.S
* We bounce-buffer SYSV small struct return values so that sysv.S can write r3 and r4 to memory without worrying about struct size.
* can write r3 and r4 to memory without worrying about struct size.
* For ELFv2 ABI, use a bounce buffer for homogeneous structs too,
* For ELFv2 ABI, use a bounce buffer for homogeneous structs too, for similar reasons. */
* for similar reasons.
*/
unsigned long smst_buffer[8]; unsigned long smst_buffer[8];
extended_cif ecif; extended_cif ecif;
...@@ -1147,26 +96,11 @@ ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue) ...@@ -1147,26 +96,11 @@ ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue)
else if (!rvalue && cif->rtype->type == FFI_TYPE_STRUCT) else if (!rvalue && cif->rtype->type == FFI_TYPE_STRUCT)
ecif.rvalue = alloca (cif->rtype->size); ecif.rvalue = alloca (cif->rtype->size);
switch (cif->abi) #ifdef POWERPC64
{
#ifndef POWERPC64
# ifndef __NO_FPRS__
case FFI_SYSV:
case FFI_GCC_SYSV:
case FFI_LINUX:
# endif
case FFI_LINUX_SOFT_FLOAT:
ffi_call_SYSV (&ecif, -cif->bytes, cif->flags, ecif.rvalue, fn);
break;
#else
case FFI_LINUX64:
ffi_call_LINUX64 (&ecif, -(long) cif->bytes, cif->flags, ecif.rvalue, fn); ffi_call_LINUX64 (&ecif, -(long) cif->bytes, cif->flags, ecif.rvalue, fn);
break; #else
ffi_call_SYSV (&ecif, -cif->bytes, cif->flags, ecif.rvalue, fn);
#endif #endif
default:
FFI_ASSERT (0);
break;
}
/* Check for a bounce-buffered return value */ /* Check for a bounce-buffered return value */
if (rvalue && ecif.rvalue == smst_buffer) if (rvalue && ecif.rvalue == smst_buffer)
...@@ -1175,12 +109,15 @@ ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue) ...@@ -1175,12 +109,15 @@ ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue)
#ifndef __LITTLE_ENDIAN__ #ifndef __LITTLE_ENDIAN__
/* The SYSV ABI returns a structure of up to 4 bytes in size /* The SYSV ABI returns a structure of up to 4 bytes in size
left-padded in r3. */ left-padded in r3. */
if (cif->abi == FFI_SYSV && rsize <= 4) # ifndef POWERPC64
if (rsize <= 4)
memcpy (rvalue, (char *) smst_buffer + 4 - rsize, rsize); memcpy (rvalue, (char *) smst_buffer + 4 - rsize, rsize);
else
# endif
/* The SYSV ABI returns a structure of up to 8 bytes in size /* The SYSV ABI returns a structure of up to 8 bytes in size
left-padded in r3/r4, and the ELFv2 ABI similarly returns a left-padded in r3/r4, and the ELFv2 ABI similarly returns a
structure of up to 8 bytes in size left-padded in r3. */ structure of up to 8 bytes in size left-padded in r3. */
else if (rsize <= 8) if (rsize <= 8)
memcpy (rvalue, (char *) smst_buffer + 8 - rsize, rsize); memcpy (rvalue, (char *) smst_buffer + 8 - rsize, rsize);
else else
#endif #endif
...@@ -1189,22 +126,6 @@ ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue) ...@@ -1189,22 +126,6 @@ ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue)
} }
#if !defined POWERPC64 || _CALL_ELF == 2
#define MIN_CACHE_LINE_SIZE 8
static void
flush_icache (char *wraddr, char *xaddr, int size)
{
int i;
for (i = 0; i < size; i += MIN_CACHE_LINE_SIZE)
__asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;"
: : "r" (xaddr + i), "r" (wraddr + i) : "memory");
__asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;" "sync;" "isync;"
: : "r"(xaddr + size - 1), "r"(wraddr + size - 1)
: "memory");
}
#endif
ffi_status ffi_status
ffi_prep_closure_loc (ffi_closure *closure, ffi_prep_closure_loc (ffi_closure *closure,
ffi_cif *cif, ffi_cif *cif,
...@@ -1213,593 +134,8 @@ ffi_prep_closure_loc (ffi_closure *closure, ...@@ -1213,593 +134,8 @@ ffi_prep_closure_loc (ffi_closure *closure,
void *codeloc) void *codeloc)
{ {
#ifdef POWERPC64 #ifdef POWERPC64
# if _CALL_ELF == 2 return ffi_prep_closure_loc_linux64 (closure, cif, fun, user_data, codeloc);
unsigned int *tramp = (unsigned int *) &closure->tramp[0];
if (cif->abi != FFI_LINUX64)
return FFI_BAD_ABI;
tramp[0] = 0xe96c0018; /* 0: ld 11,2f-0b(12) */
tramp[1] = 0xe98c0010; /* ld 12,1f-0b(12) */
tramp[2] = 0x7d8903a6; /* mtctr 12 */
tramp[3] = 0x4e800420; /* bctr */
/* 1: .quad function_addr */
/* 2: .quad context */
*(void **) &tramp[4] = (void *) ffi_closure_LINUX64;
*(void **) &tramp[6] = codeloc;
flush_icache ((char *)tramp, (char *)codeloc, FFI_TRAMPOLINE_SIZE);
# else
void **tramp = (void **) &closure->tramp[0];
if (cif->abi != FFI_LINUX64)
return FFI_BAD_ABI;
/* Copy function address and TOC from ffi_closure_LINUX64. */
memcpy (tramp, (char *) ffi_closure_LINUX64, 16);
tramp[2] = codeloc;
# endif
#else #else
unsigned int *tramp; return ffi_prep_closure_loc_sysv (closure, cif, fun, user_data, codeloc);
if (! (cif->abi == FFI_GCC_SYSV
|| cif->abi == FFI_SYSV
|| cif->abi == FFI_LINUX
|| cif->abi == FFI_LINUX_SOFT_FLOAT))
return FFI_BAD_ABI;
tramp = (unsigned int *) &closure->tramp[0];
tramp[0] = 0x7c0802a6; /* mflr r0 */
tramp[1] = 0x4800000d; /* bl 10 <trampoline_initial+0x10> */
tramp[4] = 0x7d6802a6; /* mflr r11 */
tramp[5] = 0x7c0803a6; /* mtlr r0 */
tramp[6] = 0x800b0000; /* lwz r0,0(r11) */
tramp[7] = 0x816b0004; /* lwz r11,4(r11) */
tramp[8] = 0x7c0903a6; /* mtctr r0 */
tramp[9] = 0x4e800420; /* bctr */
*(void **) &tramp[2] = (void *) ffi_closure_SYSV; /* function */
*(void **) &tramp[3] = codeloc; /* context */
/* Flush the icache. */
flush_icache ((char *)tramp, (char *)codeloc, FFI_TRAMPOLINE_SIZE);
#endif
closure->cif = cif;
closure->fun = fun;
closure->user_data = user_data;
return FFI_OK;
}
typedef union
{
float f;
double d;
} ffi_dblfl;
int ffi_closure_helper_SYSV (ffi_closure *, void *, unsigned long *,
ffi_dblfl *, unsigned long *);
/* Basically the trampoline invokes ffi_closure_SYSV, and on
* entry, r11 holds the address of the closure.
* After storing the registers that could possibly contain
* parameters to be passed into the stack frame and setting
* up space for a return value, ffi_closure_SYSV invokes the
* following helper function to do most of the work
*/
int
ffi_closure_helper_SYSV (ffi_closure *closure, void *rvalue,
unsigned long *pgr, ffi_dblfl *pfr,
unsigned long *pst)
{
/* rvalue is the pointer to space for return value in closure assembly */
/* pgr is the pointer to where r3-r10 are stored in ffi_closure_SYSV */
/* pfr is the pointer to where f1-f8 are stored in ffi_closure_SYSV */
/* pst is the pointer to outgoing parameter stack in original caller */
void ** avalue;
ffi_type ** arg_types;
long i, avn;
#ifndef __NO_FPRS__
long nf = 0; /* number of floating registers already used */
#endif
long ng = 0; /* number of general registers already used */
ffi_cif *cif = closure->cif;
unsigned size = cif->rtype->size;
unsigned short rtypenum = cif->rtype->type;
avalue = alloca (cif->nargs * sizeof (void *));
/* First translate for softfloat/nonlinux */
if (cif->abi == FFI_LINUX_SOFT_FLOAT) {
if (rtypenum == FFI_TYPE_FLOAT)
rtypenum = FFI_TYPE_UINT32;
if (rtypenum == FFI_TYPE_DOUBLE)
rtypenum = FFI_TYPE_UINT64;
if (rtypenum == FFI_TYPE_LONGDOUBLE)
rtypenum = FFI_TYPE_UINT128;
} else if (cif->abi != FFI_LINUX && cif->abi != FFI_LINUX64) {
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
if (rtypenum == FFI_TYPE_LONGDOUBLE)
rtypenum = FFI_TYPE_STRUCT;
#endif
}
/* Copy the caller's structure return value address so that the closure
returns the data directly to the caller.
For FFI_SYSV the result is passed in r3/r4 if the struct size is less
or equal 8 bytes. */
if (rtypenum == FFI_TYPE_STRUCT && ((cif->abi != FFI_SYSV) || (size > 8))) {
rvalue = (void *) *pgr;
ng++;
pgr++;
}
i = 0;
avn = cif->nargs;
arg_types = cif->arg_types;
/* Grab the addresses of the arguments from the stack frame. */
while (i < avn) {
unsigned short typenum = arg_types[i]->type;
/* We may need to handle some values depending on ABI */
if (cif->abi == FFI_LINUX_SOFT_FLOAT) {
if (typenum == FFI_TYPE_FLOAT)
typenum = FFI_TYPE_UINT32;
if (typenum == FFI_TYPE_DOUBLE)
typenum = FFI_TYPE_UINT64;
if (typenum == FFI_TYPE_LONGDOUBLE)
typenum = FFI_TYPE_UINT128;
} else if (cif->abi != FFI_LINUX && cif->abi != FFI_LINUX64) {
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
if (typenum == FFI_TYPE_LONGDOUBLE)
typenum = FFI_TYPE_STRUCT;
#endif
}
switch (typenum) {
#ifndef __NO_FPRS__
case FFI_TYPE_FLOAT:
/* unfortunately float values are stored as doubles
* in the ffi_closure_SYSV code (since we don't check
* the type in that routine).
*/
/* there are 8 64bit floating point registers */
if (nf < 8)
{
double temp = pfr->d;
pfr->f = (float) temp;
avalue[i] = pfr;
nf++;
pfr++;
}
else
{
/* FIXME? here we are really changing the values
* stored in the original calling routines outgoing
* parameter stack. This is probably a really
* naughty thing to do but...
*/
avalue[i] = pst;
pst += 1;
}
break;
case FFI_TYPE_DOUBLE:
/* On the outgoing stack all values are aligned to 8 */
/* there are 8 64bit floating point registers */
if (nf < 8)
{
avalue[i] = pfr;
nf++;
pfr++;
}
else
{
if (((long) pst) & 4)
pst++;
avalue[i] = pst;
pst += 2;
}
break;
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
if (nf < 7)
{
avalue[i] = pfr;
pfr += 2;
nf += 2;
}
else
{
if (((long) pst) & 4)
pst++;
avalue[i] = pst;
pst += 4;
nf = 8;
}
break;
#endif
#endif /* have FPRS */
case FFI_TYPE_UINT128:
/*
* Test if for the whole long double, 4 gprs are available.
* otherwise the stuff ends up on the stack.
*/
if (ng < 5) {
avalue[i] = pgr;
pgr += 4;
ng += 4;
} else {
avalue[i] = pst;
pst += 4;
ng = 8+4;
}
break;
case FFI_TYPE_SINT8:
case FFI_TYPE_UINT8:
#ifndef __LITTLE_ENDIAN__
/* there are 8 gpr registers used to pass values */
if (ng < 8)
{
avalue[i] = (char *) pgr + 3;
ng++;
pgr++;
}
else
{
avalue[i] = (char *) pst + 3;
pst++;
}
break;
#endif
case FFI_TYPE_SINT16:
case FFI_TYPE_UINT16:
#ifndef __LITTLE_ENDIAN__
/* there are 8 gpr registers used to pass values */
if (ng < 8)
{
avalue[i] = (char *) pgr + 2;
ng++;
pgr++;
}
else
{
avalue[i] = (char *) pst + 2;
pst++;
}
break;
#endif
case FFI_TYPE_SINT32:
case FFI_TYPE_UINT32:
case FFI_TYPE_POINTER:
/* there are 8 gpr registers used to pass values */
if (ng < 8)
{
avalue[i] = pgr;
ng++;
pgr++;
}
else
{
avalue[i] = pst;
pst++;
}
break;
case FFI_TYPE_STRUCT:
/* Structs are passed by reference. The address will appear in a
gpr if it is one of the first 8 arguments. */
if (ng < 8)
{
avalue[i] = (void *) *pgr;
ng++;
pgr++;
}
else
{
avalue[i] = (void *) *pst;
pst++;
}
break;
case FFI_TYPE_SINT64:
case FFI_TYPE_UINT64:
/* passing long long ints are complex, they must
* be passed in suitable register pairs such as
* (r3,r4) or (r5,r6) or (r6,r7), or (r7,r8) or (r9,r10)
* and if the entire pair aren't available then the outgoing
* parameter stack is used for both but an alignment of 8
* must will be kept. So we must either look in pgr
* or pst to find the correct address for this type
* of parameter.
*/
if (ng < 7)
{
if (ng & 0x01)
{
/* skip r4, r6, r8 as starting points */
ng++;
pgr++;
}
avalue[i] = pgr;
ng += 2;
pgr += 2;
}
else
{
if (((long) pst) & 4)
pst++;
avalue[i] = pst;
pst += 2;
ng = 8;
}
break;
default:
FFI_ASSERT (0);
}
i++;
}
(closure->fun) (cif, rvalue, avalue, closure->user_data);
/* Tell ffi_closure_SYSV how to perform return type promotions.
Because the FFI_SYSV ABI returns the structures <= 8 bytes in r3/r4
we have to tell ffi_closure_SYSV how to treat them. We combine the base
type FFI_SYSV_TYPE_SMALL_STRUCT - 1 with the size of the struct.
So a one byte struct gets the return type 16. Return type 1 to 15 are
already used and we never have a struct with size zero. That is the reason
for the subtraction of 1. See the comment in ffitarget.h about ordering.
*/
if (cif->abi == FFI_SYSV && rtypenum == FFI_TYPE_STRUCT && size <= 8)
return (FFI_SYSV_TYPE_SMALL_STRUCT - 1) + size;
return rtypenum;
}
int FFI_HIDDEN ffi_closure_helper_LINUX64 (ffi_closure *, void *,
unsigned long *, ffi_dblfl *);
int FFI_HIDDEN
ffi_closure_helper_LINUX64 (ffi_closure *closure, void *rvalue,
unsigned long *pst, ffi_dblfl *pfr)
{
/* rvalue is the pointer to space for return value in closure assembly */
/* pst is the pointer to parameter save area
(r3-r10 are stored into its first 8 slots by ffi_closure_LINUX64) */
/* pfr is the pointer to where f1-f13 are stored in ffi_closure_LINUX64 */
void **avalue;
ffi_type **arg_types;
unsigned long i, avn, nfixedargs;
ffi_cif *cif;
ffi_dblfl *end_pfr = pfr + NUM_FPR_ARG_REGISTERS64;
#ifdef __STRUCT_PARM_ALIGN__
unsigned long align;
#endif
cif = closure->cif;
avalue = alloca (cif->nargs * sizeof (void *));
/* Copy the caller's structure return value address so that the
closure returns the data directly to the caller. */
if (cif->rtype->type == FFI_TYPE_STRUCT
&& (cif->flags & FLAG_RETURNS_SMST) == 0)
{
rvalue = (void *) *pst;
pst++;
}
i = 0;
avn = cif->nargs;
nfixedargs = cif->nfixedargs;
arg_types = cif->arg_types;
/* Grab the addresses of the arguments from the stack frame. */
while (i < avn)
{
unsigned int elt, elnum;
switch (arg_types[i]->type)
{
case FFI_TYPE_SINT8:
case FFI_TYPE_UINT8:
#ifndef __LITTLE_ENDIAN__
avalue[i] = (char *) pst + 7;
pst++;
break;
#endif
case FFI_TYPE_SINT16:
case FFI_TYPE_UINT16:
#ifndef __LITTLE_ENDIAN__
avalue[i] = (char *) pst + 6;
pst++;
break;
#endif
case FFI_TYPE_SINT32:
case FFI_TYPE_UINT32:
#ifndef __LITTLE_ENDIAN__
avalue[i] = (char *) pst + 4;
pst++;
break;
#endif
case FFI_TYPE_SINT64:
case FFI_TYPE_UINT64:
case FFI_TYPE_POINTER:
avalue[i] = pst;
pst++;
break;
case FFI_TYPE_STRUCT:
#ifdef __STRUCT_PARM_ALIGN__
align = arg_types[i]->alignment;
if (align > __STRUCT_PARM_ALIGN__)
align = __STRUCT_PARM_ALIGN__;
if (align > 1)
pst = (unsigned long *) ALIGN ((size_t) pst, align);
#endif
elt = 0;
#if _CALL_ELF == 2
elt = discover_homogeneous_aggregate (arg_types[i], &elnum);
#endif #endif
if (elt)
{
union {
void *v;
unsigned long *ul;
float *f;
double *d;
size_t p;
} to, from;
/* Repackage the aggregate from its parts. The
aggregate size is not greater than the space taken by
the registers so store back to the register/parameter
save arrays. */
if (pfr + elnum <= end_pfr)
to.v = pfr;
else
to.v = pst;
avalue[i] = to.v;
from.ul = pst;
if (elt == FFI_TYPE_FLOAT)
{
do
{
if (pfr < end_pfr && i < nfixedargs)
{
*to.f = (float) pfr->d;
pfr++;
}
else
*to.f = *from.f;
to.f++;
from.f++;
}
while (--elnum != 0);
}
else
{
do
{
if (pfr < end_pfr && i < nfixedargs)
{
*to.d = pfr->d;
pfr++;
}
else
*to.d = *from.d;
to.d++;
from.d++;
}
while (--elnum != 0);
}
}
else
{
#ifndef __LITTLE_ENDIAN__
/* Structures with size less than eight bytes are passed
left-padded. */
if (arg_types[i]->size < 8)
avalue[i] = (char *) pst + 8 - arg_types[i]->size;
else
#endif
avalue[i] = pst;
}
pst += (arg_types[i]->size + 7) / 8;
break;
case FFI_TYPE_FLOAT:
/* unfortunately float values are stored as doubles
* in the ffi_closure_LINUX64 code (since we don't check
* the type in that routine).
*/
/* there are 13 64bit floating point registers */
if (pfr < end_pfr && i < nfixedargs)
{
double temp = pfr->d;
pfr->f = (float) temp;
avalue[i] = pfr;
pfr++;
}
else
avalue[i] = pst;
pst++;
break;
case FFI_TYPE_DOUBLE:
/* On the outgoing stack all values are aligned to 8 */
/* there are 13 64bit floating point registers */
if (pfr < end_pfr && i < nfixedargs)
{
avalue[i] = pfr;
pfr++;
}
else
avalue[i] = pst;
pst++;
break;
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
if (pfr + 1 < end_pfr && i + 1 < nfixedargs)
{
avalue[i] = pfr;
pfr += 2;
}
else
{
if (pfr < end_pfr && i < nfixedargs)
{
/* Passed partly in f13 and partly on the stack.
Move it all to the stack. */
*pst = *(unsigned long *) pfr;
pfr++;
}
avalue[i] = pst;
}
pst += 2;
break;
#endif
default:
FFI_ASSERT (0);
}
i++;
}
(closure->fun) (cif, rvalue, avalue, closure->user_data);
/* Tell ffi_closure_LINUX64 how to perform return type promotions. */
if ((cif->flags & FLAG_RETURNS_SMST) != 0)
{
if ((cif->flags & FLAG_RETURNS_FP) == 0)
return FFI_V2_TYPE_SMALL_STRUCT + cif->rtype->size - 1;
else if ((cif->flags & FLAG_RETURNS_64BITS) != 0)
return FFI_V2_TYPE_DOUBLE_HOMOG;
else
return FFI_V2_TYPE_FLOAT_HOMOG;
}
return cif->rtype->type;
} }
libffi/src/powerpc/ffi_linux64.c 0 → 100644
/* -----------------------------------------------------------------------
ffi_linux64.c - Copyright (C) 2013 IBM
Copyright (C) 2011 Anthony Green
Copyright (C) 2011 Kyle Moffett
Copyright (C) 2008 Red Hat, Inc
Copyright (C) 2007, 2008 Free Software Foundation, Inc
Copyright (c) 1998 Geoffrey Keating
PowerPC Foreign Function Interface
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
``Software''), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */
#include "ffi.h"
#ifdef POWERPC64
#include "ffi_common.h"
#include "ffi_powerpc.h"
/* About the LINUX64 ABI. */
enum {
NUM_GPR_ARG_REGISTERS64 = 8,
NUM_FPR_ARG_REGISTERS64 = 13
};
enum { ASM_NEEDS_REGISTERS64 = 4 };
#if HAVE_LONG_DOUBLE_VARIANT && FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
/* Adjust size of ffi_type_longdouble. */
void FFI_HIDDEN
ffi_prep_types_linux64 (ffi_abi abi)
{
if ((abi & (FFI_LINUX | FFI_LINUX_LONG_DOUBLE_128)) == FFI_LINUX)
{
ffi_type_longdouble.size = 8;
ffi_type_longdouble.alignment = 8;
}
else
{
ffi_type_longdouble.size = 16;
ffi_type_longdouble.alignment = 16;
}
}
#endif
#if _CALL_ELF == 2
static unsigned int
discover_homogeneous_aggregate (const ffi_type *t, unsigned int *elnum)
{
switch (t->type)
{
case FFI_TYPE_FLOAT:
case FFI_TYPE_DOUBLE:
*elnum = 1;
return (int) t->type;
case FFI_TYPE_STRUCT:;
{
unsigned int base_elt = 0, total_elnum = 0;
ffi_type **el = t->elements;
while (*el)
{
unsigned int el_elt, el_elnum = 0;
el_elt = discover_homogeneous_aggregate (*el, &el_elnum);
if (el_elt == 0
|| (base_elt && base_elt != el_elt))
return 0;
base_elt = el_elt;
total_elnum += el_elnum;
if (total_elnum > 8)
return 0;
el++;
}
*elnum = total_elnum;
return base_elt;
}
default:
return 0;
}
}
#endif
/* Perform machine dependent cif processing */
static ffi_status
ffi_prep_cif_linux64_core (ffi_cif *cif)
{
ffi_type **ptr;
unsigned bytes;
unsigned i, fparg_count = 0, intarg_count = 0;
unsigned flags = cif->flags;
#if _CALL_ELF == 2
unsigned int elt, elnum;
#endif
#if FFI_TYPE_LONGDOUBLE == FFI_TYPE_DOUBLE
/* If compiled without long double support.. */
if ((cif->abi & FFI_LINUX_LONG_DOUBLE_128) != 0)
return FFI_BAD_ABI;
#endif
/* The machine-independent calculation of cif->bytes doesn't work
for us. Redo the calculation. */
#if _CALL_ELF == 2
/* Space for backchain, CR, LR, TOC and the asm's temp regs. */
bytes = (4 + ASM_NEEDS_REGISTERS64) * sizeof (long);
/* Space for the general registers. */
bytes += NUM_GPR_ARG_REGISTERS64 * sizeof (long);
#else
/* Space for backchain, CR, LR, cc/ld doubleword, TOC and the asm's temp
regs. */
bytes = (6 + ASM_NEEDS_REGISTERS64) * sizeof (long);
/* Space for the mandatory parm save area and general registers. */
bytes += 2 * NUM_GPR_ARG_REGISTERS64 * sizeof (long);
#endif
/* Return value handling. */
switch (cif->rtype->type)
{
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
if ((cif->abi & FFI_LINUX_LONG_DOUBLE_128) != 0)
flags |= FLAG_RETURNS_128BITS;
/* Fall through. */
#endif
case FFI_TYPE_DOUBLE:
flags |= FLAG_RETURNS_64BITS;
/* Fall through. */
case FFI_TYPE_FLOAT:
flags |= FLAG_RETURNS_FP;
break;
case FFI_TYPE_UINT128:
flags |= FLAG_RETURNS_128BITS;
/* Fall through. */
case FFI_TYPE_UINT64:
case FFI_TYPE_SINT64:
flags |= FLAG_RETURNS_64BITS;
break;
case FFI_TYPE_STRUCT:
#if _CALL_ELF == 2
elt = discover_homogeneous_aggregate (cif->rtype, &elnum);
if (elt)
{
if (elt == FFI_TYPE_DOUBLE)
flags |= FLAG_RETURNS_64BITS;
flags |= FLAG_RETURNS_FP | FLAG_RETURNS_SMST;
break;
}
if (cif->rtype->size <= 16)
{
flags |= FLAG_RETURNS_SMST;
break;
}
#endif
intarg_count++;
flags |= FLAG_RETVAL_REFERENCE;
/* Fall through. */
case FFI_TYPE_VOID:
flags |= FLAG_RETURNS_NOTHING;
break;
default:
/* Returns 32-bit integer, or similar. Nothing to do here. */
break;
}
for (ptr = cif->arg_types, i = cif->nargs; i > 0; i--, ptr++)
{
unsigned int align;
switch ((*ptr)->type)
{
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
if ((cif->abi & FFI_LINUX_LONG_DOUBLE_128) != 0)
{
fparg_count++;
intarg_count++;
}
/* Fall through. */
#endif
case FFI_TYPE_DOUBLE:
case FFI_TYPE_FLOAT:
fparg_count++;
intarg_count++;
if (fparg_count > NUM_FPR_ARG_REGISTERS64)
flags |= FLAG_ARG_NEEDS_PSAVE;
break;
case FFI_TYPE_STRUCT:
if ((cif->abi & FFI_LINUX_STRUCT_ALIGN) != 0)
{
align = (*ptr)->alignment;
if (align > 16)
align = 16;
align = align / 8;
if (align > 1)
intarg_count = ALIGN (intarg_count, align);
}
intarg_count += ((*ptr)->size + 7) / 8;
#if _CALL_ELF == 2
elt = discover_homogeneous_aggregate (*ptr, &elnum);
if (elt)
{
fparg_count += elnum;
if (fparg_count > NUM_FPR_ARG_REGISTERS64)
flags |= FLAG_ARG_NEEDS_PSAVE;
}
else
#endif
{
if (intarg_count > NUM_GPR_ARG_REGISTERS64)
flags |= FLAG_ARG_NEEDS_PSAVE;
}
break;
case FFI_TYPE_POINTER:
case FFI_TYPE_UINT64:
case FFI_TYPE_SINT64:
case FFI_TYPE_INT:
case FFI_TYPE_UINT32:
case FFI_TYPE_SINT32:
case FFI_TYPE_UINT16:
case FFI_TYPE_SINT16:
case FFI_TYPE_UINT8:
case FFI_TYPE_SINT8:
/* Everything else is passed as a 8-byte word in a GPR, either
the object itself or a pointer to it. */
intarg_count++;
if (intarg_count > NUM_GPR_ARG_REGISTERS64)
flags |= FLAG_ARG_NEEDS_PSAVE;
break;
default:
FFI_ASSERT (0);
}
}
if (fparg_count != 0)
flags |= FLAG_FP_ARGUMENTS;
if (intarg_count > 4)
flags |= FLAG_4_GPR_ARGUMENTS;
/* Space for the FPR registers, if needed. */
if (fparg_count != 0)
bytes += NUM_FPR_ARG_REGISTERS64 * sizeof (double);
/* Stack space. */
#if _CALL_ELF == 2
if ((flags & FLAG_ARG_NEEDS_PSAVE) != 0)
bytes += intarg_count * sizeof (long);
#else
if (intarg_count > NUM_GPR_ARG_REGISTERS64)
bytes += (intarg_count - NUM_GPR_ARG_REGISTERS64) * sizeof (long);
#endif
/* The stack space allocated needs to be a multiple of 16 bytes. */
bytes = (bytes + 15) & ~0xF;
cif->flags = flags;
cif->bytes = bytes;
return FFI_OK;
}
ffi_status FFI_HIDDEN
ffi_prep_cif_linux64 (ffi_cif *cif)
{
if ((cif->abi & FFI_LINUX) != 0)
cif->nfixedargs = cif->nargs;
#if _CALL_ELF != 2
else if (cif->abi == FFI_COMPAT_LINUX64)
{
/* This call is from old code. Don't touch cif->nfixedargs
since old code will be using a smaller cif. */
cif->flags |= FLAG_COMPAT;
/* Translate to new abi value. */
cif->abi = FFI_LINUX | FFI_LINUX_LONG_DOUBLE_128;
}
#endif
else
return FFI_BAD_ABI;
return ffi_prep_cif_linux64_core (cif);
}
ffi_status FFI_HIDDEN
ffi_prep_cif_linux64_var (ffi_cif *cif,
unsigned int nfixedargs,
unsigned int ntotalargs MAYBE_UNUSED)
{
if ((cif->abi & FFI_LINUX) != 0)
cif->nfixedargs = nfixedargs;
#if _CALL_ELF != 2
else if (cif->abi == FFI_COMPAT_LINUX64)
{
/* This call is from old code. Don't touch cif->nfixedargs
since old code will be using a smaller cif. */
cif->flags |= FLAG_COMPAT;
/* Translate to new abi value. */
cif->abi = FFI_LINUX | FFI_LINUX_LONG_DOUBLE_128;
}
#endif
else
return FFI_BAD_ABI;
#if _CALL_ELF == 2
cif->flags |= FLAG_ARG_NEEDS_PSAVE;
#endif
return ffi_prep_cif_linux64_core (cif);
}
/* ffi_prep_args64 is called by the assembly routine once stack space
has been allocated for the function's arguments.
The stack layout we want looks like this:
| Ret addr from ffi_call_LINUX64 8bytes | higher addresses
|--------------------------------------------|
| CR save area 8bytes |
|--------------------------------------------|
| Previous backchain pointer 8 | stack pointer here
|--------------------------------------------|<+ <<< on entry to
| Saved r28-r31 4*8 | | ffi_call_LINUX64
|--------------------------------------------| |
| GPR registers r3-r10 8*8 | |
|--------------------------------------------| |
| FPR registers f1-f13 (optional) 13*8 | |
|--------------------------------------------| |
| Parameter save area | |
|--------------------------------------------| |
| TOC save area 8 | |
|--------------------------------------------| | stack |
| Linker doubleword 8 | | grows |
|--------------------------------------------| | down V
| Compiler doubleword 8 | |
|--------------------------------------------| | lower addresses
| Space for callee's LR 8 | |
|--------------------------------------------| |
| CR save area 8 | |
|--------------------------------------------| | stack pointer here
| Current backchain pointer 8 |-/ during
|--------------------------------------------| <<< ffi_call_LINUX64
*/
void FFI_HIDDEN
ffi_prep_args64 (extended_cif *ecif, unsigned long *const stack)
{
const unsigned long bytes = ecif->cif->bytes;
const unsigned long flags = ecif->cif->flags;
typedef union
{
char *c;
unsigned long *ul;
float *f;
double *d;
size_t p;
} valp;
/* 'stacktop' points at the previous backchain pointer. */
valp stacktop;
/* 'next_arg' points at the space for gpr3, and grows upwards as
we use GPR registers, then continues at rest. */
valp gpr_base;
valp gpr_end;
valp rest;
valp next_arg;
/* 'fpr_base' points at the space for fpr3, and grows upwards as
we use FPR registers. */
valp fpr_base;
unsigned int fparg_count;
unsigned int i, words, nargs, nfixedargs;
ffi_type **ptr;
double double_tmp;
union
{
void **v;
char **c;
signed char **sc;
unsigned char **uc;
signed short **ss;
unsigned short **us;
signed int **si;
unsigned int **ui;
unsigned long **ul;
float **f;
double **d;
} p_argv;
unsigned long gprvalue;
unsigned long align;
stacktop.c = (char *) stack + bytes;
gpr_base.ul = stacktop.ul - ASM_NEEDS_REGISTERS64 - NUM_GPR_ARG_REGISTERS64;
gpr_end.ul = gpr_base.ul + NUM_GPR_ARG_REGISTERS64;
#if _CALL_ELF == 2
rest.ul = stack + 4 + NUM_GPR_ARG_REGISTERS64;
#else
rest.ul = stack + 6 + NUM_GPR_ARG_REGISTERS64;
#endif
fpr_base.d = gpr_base.d - NUM_FPR_ARG_REGISTERS64;
fparg_count = 0;
next_arg.ul = gpr_base.ul;
/* Check that everything starts aligned properly. */
FFI_ASSERT (((unsigned long) (char *) stack & 0xF) == 0);
FFI_ASSERT (((unsigned long) stacktop.c & 0xF) == 0);
FFI_ASSERT ((bytes & 0xF) == 0);
/* Deal with return values that are actually pass-by-reference. */
if (flags & FLAG_RETVAL_REFERENCE)
*next_arg.ul++ = (unsigned long) (char *) ecif->rvalue;
/* Now for the arguments. */
p_argv.v = ecif->avalue;
nargs = ecif->cif->nargs;
#if _CALL_ELF != 2
nfixedargs = (unsigned) -1;
if ((flags & FLAG_COMPAT) == 0)
#endif
nfixedargs = ecif->cif->nfixedargs;
for (ptr = ecif->cif->arg_types, i = 0;
i < nargs;
i++, ptr++, p_argv.v++)
{
#if _CALL_ELF == 2
unsigned int elt, elnum;
#endif
switch ((*ptr)->type)
{
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
if ((ecif->cif->abi & FFI_LINUX_LONG_DOUBLE_128) != 0)
{
double_tmp = (*p_argv.d)[0];
if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
{
*fpr_base.d++ = double_tmp;
# if _CALL_ELF != 2
if ((flags & FLAG_COMPAT) != 0)
*next_arg.d = double_tmp;
# endif
}
else
*next_arg.d = double_tmp;
if (++next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
fparg_count++;
double_tmp = (*p_argv.d)[1];
if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
{
*fpr_base.d++ = double_tmp;
# if _CALL_ELF != 2
if ((flags & FLAG_COMPAT) != 0)
*next_arg.d = double_tmp;
# endif
}
else
*next_arg.d = double_tmp;
if (++next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
fparg_count++;
FFI_ASSERT (__LDBL_MANT_DIG__ == 106);
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
}
/* Fall through. */
#endif
case FFI_TYPE_DOUBLE:
double_tmp = **p_argv.d;
if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
{
*fpr_base.d++ = double_tmp;
#if _CALL_ELF != 2
if ((flags & FLAG_COMPAT) != 0)
*next_arg.d = double_tmp;
#endif
}
else
*next_arg.d = double_tmp;
if (++next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
fparg_count++;
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
case FFI_TYPE_FLOAT:
double_tmp = **p_argv.f;
if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
{
*fpr_base.d++ = double_tmp;
#if _CALL_ELF != 2
if ((flags & FLAG_COMPAT) != 0)
*next_arg.f = (float) double_tmp;
#endif
}
else
*next_arg.f = (float) double_tmp;
if (++next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
fparg_count++;
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
case FFI_TYPE_STRUCT:
if ((ecif->cif->abi & FFI_LINUX_STRUCT_ALIGN) != 0)
{
align = (*ptr)->alignment;
if (align > 16)
align = 16;
if (align > 1)
next_arg.p = ALIGN (next_arg.p, align);
}
#if _CALL_ELF == 2
elt = discover_homogeneous_aggregate (*ptr, &elnum);
if (elt)
{
union {
void *v;
float *f;
double *d;
} arg;
arg.v = *p_argv.v;
if (elt == FFI_TYPE_FLOAT)
{
do
{
double_tmp = *arg.f++;
if (fparg_count < NUM_FPR_ARG_REGISTERS64
&& i < nfixedargs)
*fpr_base.d++ = double_tmp;
else
*next_arg.f = (float) double_tmp;
if (++next_arg.f == gpr_end.f)
next_arg.f = rest.f;
fparg_count++;
}
while (--elnum != 0);
if ((next_arg.p & 3) != 0)
{
if (++next_arg.f == gpr_end.f)
next_arg.f = rest.f;
}
}
else
do
{
double_tmp = *arg.d++;
if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
*fpr_base.d++ = double_tmp;
else
*next_arg.d = double_tmp;
if (++next_arg.d == gpr_end.d)
next_arg.d = rest.d;
fparg_count++;
}
while (--elnum != 0);
}
else
#endif
{
words = ((*ptr)->size + 7) / 8;
if (next_arg.ul >= gpr_base.ul && next_arg.ul + words > gpr_end.ul)
{
size_t first = gpr_end.c - next_arg.c;
memcpy (next_arg.c, *p_argv.c, first);
memcpy (rest.c, *p_argv.c + first, (*ptr)->size - first);
next_arg.c = rest.c + words * 8 - first;
}
else
{
char *where = next_arg.c;
#ifndef __LITTLE_ENDIAN__
/* Structures with size less than eight bytes are passed
left-padded. */
if ((*ptr)->size < 8)
where += 8 - (*ptr)->size;
#endif
memcpy (where, *p_argv.c, (*ptr)->size);
next_arg.ul += words;
if (next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
}
}
break;
case FFI_TYPE_UINT8:
gprvalue = **p_argv.uc;
goto putgpr;
case FFI_TYPE_SINT8:
gprvalue = **p_argv.sc;
goto putgpr;
case FFI_TYPE_UINT16:
gprvalue = **p_argv.us;
goto putgpr;
case FFI_TYPE_SINT16:
gprvalue = **p_argv.ss;
goto putgpr;
case FFI_TYPE_UINT32:
gprvalue = **p_argv.ui;
goto putgpr;
case FFI_TYPE_INT:
case FFI_TYPE_SINT32:
gprvalue = **p_argv.si;
goto putgpr;
case FFI_TYPE_UINT64:
case FFI_TYPE_SINT64:
case FFI_TYPE_POINTER:
gprvalue = **p_argv.ul;
putgpr:
*next_arg.ul++ = gprvalue;
if (next_arg.ul == gpr_end.ul)
next_arg.ul = rest.ul;
break;
}
}
FFI_ASSERT (flags & FLAG_4_GPR_ARGUMENTS
|| (next_arg.ul >= gpr_base.ul
&& next_arg.ul <= gpr_base.ul + 4));
}
#if _CALL_ELF == 2
#define MIN_CACHE_LINE_SIZE 8
static void
flush_icache (char *wraddr, char *xaddr, int size)
{
int i;
for (i = 0; i < size; i += MIN_CACHE_LINE_SIZE)
__asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;"
: : "r" (xaddr + i), "r" (wraddr + i) : "memory");
__asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;" "sync;" "isync;"
: : "r"(xaddr + size - 1), "r"(wraddr + size - 1)
: "memory");
}
#endif
ffi_status
ffi_prep_closure_loc_linux64 (ffi_closure *closure,
ffi_cif *cif,
void (*fun) (ffi_cif *, void *, void **, void *),
void *user_data,
void *codeloc)
{
#if _CALL_ELF == 2
unsigned int *tramp = (unsigned int *) &closure->tramp[0];
if (cif->abi < FFI_LINUX || cif->abi >= FFI_LAST_ABI)
return FFI_BAD_ABI;
tramp[0] = 0xe96c0018; /* 0: ld 11,2f-0b(12) */
tramp[1] = 0xe98c0010; /* ld 12,1f-0b(12) */
tramp[2] = 0x7d8903a6; /* mtctr 12 */
tramp[3] = 0x4e800420; /* bctr */
/* 1: .quad function_addr */
/* 2: .quad context */
*(void **) &tramp[4] = (void *) ffi_closure_LINUX64;
*(void **) &tramp[6] = codeloc;
flush_icache ((char *)tramp, (char *)codeloc, FFI_TRAMPOLINE_SIZE);
#else
void **tramp = (void **) &closure->tramp[0];
if (cif->abi < FFI_LINUX || cif->abi >= FFI_LAST_ABI)
return FFI_BAD_ABI;
/* Copy function address and TOC from ffi_closure_LINUX64. */
memcpy (tramp, (char *) ffi_closure_LINUX64, 16);
tramp[2] = codeloc;
#endif
closure->cif = cif;
closure->fun = fun;
closure->user_data = user_data;
return FFI_OK;
}
int FFI_HIDDEN
ffi_closure_helper_LINUX64 (ffi_closure *closure, void *rvalue,
unsigned long *pst, ffi_dblfl *pfr)
{
/* rvalue is the pointer to space for return value in closure assembly */
/* pst is the pointer to parameter save area
(r3-r10 are stored into its first 8 slots by ffi_closure_LINUX64) */
/* pfr is the pointer to where f1-f13 are stored in ffi_closure_LINUX64 */
void **avalue;
ffi_type **arg_types;
unsigned long i, avn, nfixedargs;
ffi_cif *cif;
ffi_dblfl *end_pfr = pfr + NUM_FPR_ARG_REGISTERS64;
unsigned long align;
cif = closure->cif;
avalue = alloca (cif->nargs * sizeof (void *));
/* Copy the caller's structure return value address so that the
closure returns the data directly to the caller. */
if (cif->rtype->type == FFI_TYPE_STRUCT
&& (cif->flags & FLAG_RETURNS_SMST) == 0)
{
rvalue = (void *) *pst;
pst++;
}
i = 0;
avn = cif->nargs;
#if _CALL_ELF != 2
nfixedargs = (unsigned) -1;
if ((cif->flags & FLAG_COMPAT) == 0)
#endif
nfixedargs = cif->nfixedargs;
arg_types = cif->arg_types;
/* Grab the addresses of the arguments from the stack frame. */
while (i < avn)
{
unsigned int elt, elnum;
switch (arg_types[i]->type)
{
case FFI_TYPE_SINT8:
case FFI_TYPE_UINT8:
#ifndef __LITTLE_ENDIAN__
avalue[i] = (char *) pst + 7;
pst++;
break;
#endif
case FFI_TYPE_SINT16:
case FFI_TYPE_UINT16:
#ifndef __LITTLE_ENDIAN__
avalue[i] = (char *) pst + 6;
pst++;
break;
#endif
case FFI_TYPE_SINT32:
case FFI_TYPE_UINT32:
#ifndef __LITTLE_ENDIAN__
avalue[i] = (char *) pst + 4;
pst++;
break;
#endif
case FFI_TYPE_SINT64:
case FFI_TYPE_UINT64:
case FFI_TYPE_POINTER:
avalue[i] = pst;
pst++;
break;
case FFI_TYPE_STRUCT:
if ((cif->abi & FFI_LINUX_STRUCT_ALIGN) != 0)
{
align = arg_types[i]->alignment;
if (align > 16)
align = 16;
if (align > 1)
pst = (unsigned long *) ALIGN ((size_t) pst, align);
}
elt = 0;
#if _CALL_ELF == 2
elt = discover_homogeneous_aggregate (arg_types[i], &elnum);
#endif
if (elt)
{
union {
void *v;
unsigned long *ul;
float *f;
double *d;
size_t p;
} to, from;
/* Repackage the aggregate from its parts. The
aggregate size is not greater than the space taken by
the registers so store back to the register/parameter
save arrays. */
if (pfr + elnum <= end_pfr)
to.v = pfr;
else
to.v = pst;
avalue[i] = to.v;
from.ul = pst;
if (elt == FFI_TYPE_FLOAT)
{
do
{
if (pfr < end_pfr && i < nfixedargs)
{
*to.f = (float) pfr->d;
pfr++;
}
else
*to.f = *from.f;
to.f++;
from.f++;
}
while (--elnum != 0);
}
else
{
do
{
if (pfr < end_pfr && i < nfixedargs)
{
*to.d = pfr->d;
pfr++;
}
else
*to.d = *from.d;
to.d++;
from.d++;
}
while (--elnum != 0);
}
}
else
{
#ifndef __LITTLE_ENDIAN__
/* Structures with size less than eight bytes are passed
left-padded. */
if (arg_types[i]->size < 8)
avalue[i] = (char *) pst + 8 - arg_types[i]->size;
else
#endif
avalue[i] = pst;
}
pst += (arg_types[i]->size + 7) / 8;
break;
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
if ((cif->abi & FFI_LINUX_LONG_DOUBLE_128) != 0)
{
if (pfr + 1 < end_pfr && i + 1 < nfixedargs)
{
avalue[i] = pfr;
pfr += 2;
}
else
{
if (pfr < end_pfr && i < nfixedargs)
{
/* Passed partly in f13 and partly on the stack.
Move it all to the stack. */
*pst = *(unsigned long *) pfr;
pfr++;
}
avalue[i] = pst;
}
pst += 2;
break;
}
/* Fall through. */
#endif
case FFI_TYPE_DOUBLE:
/* On the outgoing stack all values are aligned to 8 */
/* there are 13 64bit floating point registers */
if (pfr < end_pfr && i < nfixedargs)
{
avalue[i] = pfr;
pfr++;
}
else
avalue[i] = pst;
pst++;
break;
case FFI_TYPE_FLOAT:
if (pfr < end_pfr && i < nfixedargs)
{
/* Float values are stored as doubles in the
ffi_closure_LINUX64 code. Fix them here. */
pfr->f = (float) pfr->d;
avalue[i] = pfr;
pfr++;
}
else
avalue[i] = pst;
pst++;
break;
default:
FFI_ASSERT (0);
}
i++;
}
(closure->fun) (cif, rvalue, avalue, closure->user_data);
/* Tell ffi_closure_LINUX64 how to perform return type promotions. */
if ((cif->flags & FLAG_RETURNS_SMST) != 0)
{
if ((cif->flags & FLAG_RETURNS_FP) == 0)
return FFI_V2_TYPE_SMALL_STRUCT + cif->rtype->size - 1;
else if ((cif->flags & FLAG_RETURNS_64BITS) != 0)
return FFI_V2_TYPE_DOUBLE_HOMOG;
else
return FFI_V2_TYPE_FLOAT_HOMOG;
}
return cif->rtype->type;
}
#endif
libffi/src/powerpc/ffi_powerpc.h 0 → 100644
/* -----------------------------------------------------------------------
ffi_powerpc.h - Copyright (C) 2013 IBM
Copyright (C) 2011 Anthony Green
Copyright (C) 2011 Kyle Moffett
Copyright (C) 2008 Red Hat, Inc
Copyright (C) 2007, 2008 Free Software Foundation, Inc
Copyright (c) 1998 Geoffrey Keating
PowerPC Foreign Function Interface
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
``Software''), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */
enum {
/* The assembly depends on these exact flags. */
/* These go in cr7 */
FLAG_RETURNS_SMST = 1 << (31-31), /* Used for FFI_SYSV small structs. */
FLAG_RETURNS_NOTHING = 1 << (31-30),
FLAG_RETURNS_FP = 1 << (31-29),
FLAG_RETURNS_64BITS = 1 << (31-28),
/* This goes in cr6 */
FLAG_RETURNS_128BITS = 1 << (31-27),
FLAG_COMPAT = 1 << (31- 8), /* Not used by assembly */
/* These go in cr1 */
FLAG_ARG_NEEDS_COPY = 1 << (31- 7), /* Used by sysv code */
FLAG_ARG_NEEDS_PSAVE = FLAG_ARG_NEEDS_COPY, /* Used by linux64 code */
FLAG_FP_ARGUMENTS = 1 << (31- 6), /* cr1.eq; specified by ABI */
FLAG_4_GPR_ARGUMENTS = 1 << (31- 5),
FLAG_RETVAL_REFERENCE = 1 << (31- 4)
};
typedef union
{
float f;
double d;
} ffi_dblfl;
void FFI_HIDDEN ffi_closure_SYSV (void);
void FFI_HIDDEN ffi_call_SYSV(extended_cif *, unsigned, unsigned, unsigned *,
void (*)(void));
void FFI_HIDDEN ffi_prep_types_sysv (ffi_abi);
ffi_status FFI_HIDDEN ffi_prep_cif_sysv (ffi_cif *);
int FFI_HIDDEN ffi_closure_helper_SYSV (ffi_closure *, void *, unsigned long *,
ffi_dblfl *, unsigned long *);
void FFI_HIDDEN ffi_call_LINUX64(extended_cif *, unsigned long, unsigned long,
unsigned long *, void (*)(void));
void FFI_HIDDEN ffi_closure_LINUX64 (void);
void FFI_HIDDEN ffi_prep_types_linux64 (ffi_abi);
ffi_status FFI_HIDDEN ffi_prep_cif_linux64 (ffi_cif *);
ffi_status FFI_HIDDEN ffi_prep_cif_linux64_var (ffi_cif *, unsigned int,
unsigned int);
void FFI_HIDDEN ffi_prep_args64 (extended_cif *, unsigned long *const);
int FFI_HIDDEN ffi_closure_helper_LINUX64 (ffi_closure *, void *,
unsigned long *, ffi_dblfl *);
libffi/src/powerpc/ffi_sysv.c 0 → 100644
/* -----------------------------------------------------------------------
ffi_sysv.c - Copyright (C) 2013 IBM
Copyright (C) 2011 Anthony Green
Copyright (C) 2011 Kyle Moffett
Copyright (C) 2008 Red Hat, Inc
Copyright (C) 2007, 2008 Free Software Foundation, Inc
Copyright (c) 1998 Geoffrey Keating
PowerPC Foreign Function Interface
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
``Software''), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */
#include "ffi.h"
#ifndef POWERPC64
#include "ffi_common.h"
#include "ffi_powerpc.h"
/* About the SYSV ABI. */
#define ASM_NEEDS_REGISTERS 4
#define NUM_GPR_ARG_REGISTERS 8
#define NUM_FPR_ARG_REGISTERS 8
#if HAVE_LONG_DOUBLE_VARIANT && FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
/* Adjust size of ffi_type_longdouble. */
void FFI_HIDDEN
ffi_prep_types_sysv (ffi_abi abi)
{
if ((abi & (FFI_SYSV | FFI_SYSV_LONG_DOUBLE_128)) == FFI_SYSV)
{
ffi_type_longdouble.size = 8;
ffi_type_longdouble.alignment = 8;
}
else
{
ffi_type_longdouble.size = 16;
ffi_type_longdouble.alignment = 16;
}
}
#endif
/* Transform long double, double and float to other types as per abi. */
static int
translate_float (int abi, int type)
{
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
if (type == FFI_TYPE_LONGDOUBLE
&& (abi & FFI_SYSV_LONG_DOUBLE_128) == 0)
type = FFI_TYPE_DOUBLE;
#endif
if ((abi & FFI_SYSV_SOFT_FLOAT) != 0)
{
if (type == FFI_TYPE_FLOAT)
type = FFI_TYPE_UINT32;
else if (type == FFI_TYPE_DOUBLE)
type = FFI_TYPE_UINT64;
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
else if (type == FFI_TYPE_LONGDOUBLE)
type = FFI_TYPE_UINT128;
}
else if ((abi & FFI_SYSV_IBM_LONG_DOUBLE) == 0)
{
if (type == FFI_TYPE_LONGDOUBLE)
type = FFI_TYPE_STRUCT;
#endif
}
return type;
}
/* Perform machine dependent cif processing */
static ffi_status
ffi_prep_cif_sysv_core (ffi_cif *cif)
{
ffi_type **ptr;
unsigned bytes;
unsigned i, fparg_count = 0, intarg_count = 0;
unsigned flags = cif->flags;
unsigned struct_copy_size = 0;
unsigned type = cif->rtype->type;
unsigned size = cif->rtype->size;
/* The machine-independent calculation of cif->bytes doesn't work
for us. Redo the calculation. */
/* Space for the frame pointer, callee's LR, and the asm's temp regs. */
bytes = (2 + ASM_NEEDS_REGISTERS) * sizeof (int);
/* Space for the GPR registers. */
bytes += NUM_GPR_ARG_REGISTERS * sizeof (int);
/* Return value handling. The rules for SYSV are as follows:
- 32-bit (or less) integer values are returned in gpr3;
- Structures of size <= 4 bytes also returned in gpr3;
- 64-bit integer values and structures between 5 and 8 bytes are returned
in gpr3 and gpr4;
- Larger structures are allocated space and a pointer is passed as
the first argument.
- Single/double FP values are returned in fpr1;
- long doubles (if not equivalent to double) are returned in
fpr1,fpr2 for Linux and as for large structs for SysV. */
type = translate_float (cif->abi, type);
switch (type)
{
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
flags |= FLAG_RETURNS_128BITS;
/* Fall through. */
#endif
case FFI_TYPE_DOUBLE:
flags |= FLAG_RETURNS_64BITS;
/* Fall through. */
case FFI_TYPE_FLOAT:
flags |= FLAG_RETURNS_FP;
#ifdef __NO_FPRS__
return FFI_BAD_ABI;
#endif
break;
case FFI_TYPE_UINT128:
flags |= FLAG_RETURNS_128BITS;
/* Fall through. */
case FFI_TYPE_UINT64:
case FFI_TYPE_SINT64:
flags |= FLAG_RETURNS_64BITS;
break;
case FFI_TYPE_STRUCT:
/* The final SYSV ABI says that structures smaller or equal 8 bytes
are returned in r3/r4. A draft ABI used by linux instead
returns them in memory. */
if ((cif->abi & FFI_SYSV_STRUCT_RET) != 0 && size <= 8)
{
flags |= FLAG_RETURNS_SMST;
break;
}
intarg_count++;
flags |= FLAG_RETVAL_REFERENCE;
/* Fall through. */
case FFI_TYPE_VOID:
flags |= FLAG_RETURNS_NOTHING;
break;
default:
/* Returns 32-bit integer, or similar. Nothing to do here. */
break;
}
/* The first NUM_GPR_ARG_REGISTERS words of integer arguments, and the
first NUM_FPR_ARG_REGISTERS fp arguments, go in registers; the rest
goes on the stack. Structures and long doubles (if not equivalent
to double) are passed as a pointer to a copy of the structure.
Stuff on the stack needs to keep proper alignment. */
for (ptr = cif->arg_types, i = cif->nargs; i > 0; i--, ptr++)
{
unsigned short typenum = (*ptr)->type;
typenum = translate_float (cif->abi, typenum);
switch (typenum)
{
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
fparg_count++;
/* Fall thru */
#endif
case FFI_TYPE_DOUBLE:
fparg_count++;
/* If this FP arg is going on the stack, it must be
8-byte-aligned. */
if (fparg_count > NUM_FPR_ARG_REGISTERS
&& intarg_count >= NUM_GPR_ARG_REGISTERS
&& intarg_count % 2 != 0)
intarg_count++;
#ifdef __NO_FPRS__
return FFI_BAD_ABI;
#endif
break;
case FFI_TYPE_FLOAT:
fparg_count++;
#ifdef __NO_FPRS__
return FFI_BAD_ABI;
#endif
break;
case FFI_TYPE_UINT128:
/* A long double in FFI_LINUX_SOFT_FLOAT can use only a set
of four consecutive gprs. If we do not have enough, we
have to adjust the intarg_count value. */
if (intarg_count >= NUM_GPR_ARG_REGISTERS - 3
&& intarg_count < NUM_GPR_ARG_REGISTERS)
intarg_count = NUM_GPR_ARG_REGISTERS;
intarg_count += 4;
break;
case FFI_TYPE_UINT64:
case FFI_TYPE_SINT64:
/* 'long long' arguments are passed as two words, but
either both words must fit in registers or both go
on the stack. If they go on the stack, they must
be 8-byte-aligned.
Also, only certain register pairs can be used for
passing long long int -- specifically (r3,r4), (r5,r6),
(r7,r8), (r9,r10). */
if (intarg_count == NUM_GPR_ARG_REGISTERS-1
|| intarg_count % 2 != 0)
intarg_count++;
intarg_count += 2;
break;
case FFI_TYPE_STRUCT:
/* We must allocate space for a copy of these to enforce
pass-by-value. Pad the space up to a multiple of 16
bytes (the maximum alignment required for anything under
the SYSV ABI). */
struct_copy_size += ((*ptr)->size + 15) & ~0xF;
/* Fall through (allocate space for the pointer). */
case FFI_TYPE_POINTER:
case FFI_TYPE_INT:
case FFI_TYPE_UINT32:
case FFI_TYPE_SINT32:
case FFI_TYPE_UINT16:
case FFI_TYPE_SINT16:
case FFI_TYPE_UINT8:
case FFI_TYPE_SINT8:
/* Everything else is passed as a 4-byte word in a GPR, either
the object itself or a pointer to it. */
intarg_count++;
break;
default:
FFI_ASSERT (0);
}
}
if (fparg_count != 0)
flags |= FLAG_FP_ARGUMENTS;
if (intarg_count > 4)
flags |= FLAG_4_GPR_ARGUMENTS;
if (struct_copy_size != 0)
flags |= FLAG_ARG_NEEDS_COPY;
/* Space for the FPR registers, if needed. */
if (fparg_count != 0)
bytes += NUM_FPR_ARG_REGISTERS * sizeof (double);
/* Stack space. */
if (intarg_count > NUM_GPR_ARG_REGISTERS)
bytes += (intarg_count - NUM_GPR_ARG_REGISTERS) * sizeof (int);
if (fparg_count > NUM_FPR_ARG_REGISTERS)
bytes += (fparg_count - NUM_FPR_ARG_REGISTERS) * sizeof (double);
/* The stack space allocated needs to be a multiple of 16 bytes. */
bytes = (bytes + 15) & ~0xF;
/* Add in the space for the copied structures. */
bytes += struct_copy_size;
cif->flags = flags;
cif->bytes = bytes;
return FFI_OK;
}
ffi_status FFI_HIDDEN
ffi_prep_cif_sysv (ffi_cif *cif)
{
if ((cif->abi & FFI_SYSV) == 0)
{
/* This call is from old code. Translate to new ABI values. */
cif->flags |= FLAG_COMPAT;
switch (cif->abi)
{
default:
return FFI_BAD_ABI;
case FFI_COMPAT_SYSV:
cif->abi = FFI_SYSV | FFI_SYSV_STRUCT_RET | FFI_SYSV_LONG_DOUBLE_128;
break;
case FFI_COMPAT_GCC_SYSV:
cif->abi = FFI_SYSV | FFI_SYSV_LONG_DOUBLE_128;
break;
case FFI_COMPAT_LINUX:
cif->abi = (FFI_SYSV | FFI_SYSV_IBM_LONG_DOUBLE
| FFI_SYSV_LONG_DOUBLE_128);
break;
case FFI_COMPAT_LINUX_SOFT_FLOAT:
cif->abi = (FFI_SYSV | FFI_SYSV_SOFT_FLOAT | FFI_SYSV_IBM_LONG_DOUBLE
| FFI_SYSV_LONG_DOUBLE_128);
break;
}
}
return ffi_prep_cif_sysv_core (cif);
}
/* ffi_prep_args_SYSV is called by the assembly routine once stack space
has been allocated for the function's arguments.
The stack layout we want looks like this:
| Return address from ffi_call_SYSV 4bytes | higher addresses
|--------------------------------------------|
| Previous backchain pointer 4 | stack pointer here
|--------------------------------------------|<+ <<< on entry to
| Saved r28-r31 4*4 | | ffi_call_SYSV
|--------------------------------------------| |
| GPR registers r3-r10 8*4 | | ffi_call_SYSV
|--------------------------------------------| |
| FPR registers f1-f8 (optional) 8*8 | |
|--------------------------------------------| | stack |
| Space for copied structures | | grows |
|--------------------------------------------| | down V
| Parameters that didn't fit in registers | |
|--------------------------------------------| | lower addresses
| Space for callee's LR 4 | |
|--------------------------------------------| | stack pointer here
| Current backchain pointer 4 |-/ during
|--------------------------------------------| <<< ffi_call_SYSV
*/
void FFI_HIDDEN
ffi_prep_args_SYSV (extended_cif *ecif, unsigned *const stack)
{
const unsigned bytes = ecif->cif->bytes;
const unsigned flags = ecif->cif->flags;
typedef union
{
char *c;
unsigned *u;
long long *ll;
float *f;
double *d;
} valp;
/* 'stacktop' points at the previous backchain pointer. */
valp stacktop;
/* 'gpr_base' points at the space for gpr3, and grows upwards as
we use GPR registers. */
valp gpr_base;
int intarg_count;
#ifndef __NO_FPRS__
/* 'fpr_base' points at the space for fpr1, and grows upwards as
we use FPR registers. */
valp fpr_base;
int fparg_count;
#endif
/* 'copy_space' grows down as we put structures in it. It should
stay 16-byte aligned. */
valp copy_space;
/* 'next_arg' grows up as we put parameters in it. */
valp next_arg;
int i;
ffi_type **ptr;
#ifndef __NO_FPRS__
double double_tmp;
#endif
union
{
void **v;
char **c;
signed char **sc;
unsigned char **uc;
signed short **ss;
unsigned short **us;
unsigned int **ui;
long long **ll;
float **f;
double **d;
} p_argv;
size_t struct_copy_size;
unsigned gprvalue;
stacktop.c = (char *) stack + bytes;
gpr_base.u = stacktop.u - ASM_NEEDS_REGISTERS - NUM_GPR_ARG_REGISTERS;
intarg_count = 0;
#ifndef __NO_FPRS__
fpr_base.d = gpr_base.d - NUM_FPR_ARG_REGISTERS;
fparg_count = 0;
copy_space.c = ((flags & FLAG_FP_ARGUMENTS) ? fpr_base.c : gpr_base.c);
#else
copy_space.c = gpr_base.c;
#endif
next_arg.u = stack + 2;
/* Check that everything starts aligned properly. */
FFI_ASSERT (((unsigned long) (char *) stack & 0xF) == 0);
FFI_ASSERT (((unsigned long) copy_space.c & 0xF) == 0);
FFI_ASSERT (((unsigned long) stacktop.c & 0xF) == 0);
FFI_ASSERT ((bytes & 0xF) == 0);
FFI_ASSERT (copy_space.c >= next_arg.c);
/* Deal with return values that are actually pass-by-reference. */
if (flags & FLAG_RETVAL_REFERENCE)
{
*gpr_base.u++ = (unsigned long) (char *) ecif->rvalue;
intarg_count++;
}
/* Now for the arguments. */
p_argv.v = ecif->avalue;
for (ptr = ecif->cif->arg_types, i = ecif->cif->nargs;
i > 0;
i--, ptr++, p_argv.v++)
{
unsigned int typenum = (*ptr)->type;
typenum = translate_float (ecif->cif->abi, typenum);
/* Now test the translated value */
switch (typenum)
{
#ifndef __NO_FPRS__
# if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
double_tmp = (*p_argv.d)[0];
if (fparg_count >= NUM_FPR_ARG_REGISTERS - 1)
{
if (intarg_count >= NUM_GPR_ARG_REGISTERS
&& intarg_count % 2 != 0)
{
intarg_count++;
next_arg.u++;
}
*next_arg.d = double_tmp;
next_arg.u += 2;
double_tmp = (*p_argv.d)[1];
*next_arg.d = double_tmp;
next_arg.u += 2;
}
else
{
*fpr_base.d++ = double_tmp;
double_tmp = (*p_argv.d)[1];
*fpr_base.d++ = double_tmp;
}
fparg_count += 2;
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
# endif
case FFI_TYPE_DOUBLE:
double_tmp = **p_argv.d;
if (fparg_count >= NUM_FPR_ARG_REGISTERS)
{
if (intarg_count >= NUM_GPR_ARG_REGISTERS
&& intarg_count % 2 != 0)
{
intarg_count++;
next_arg.u++;
}
*next_arg.d = double_tmp;
next_arg.u += 2;
}
else
*fpr_base.d++ = double_tmp;
fparg_count++;
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
case FFI_TYPE_FLOAT:
double_tmp = **p_argv.f;
if (fparg_count >= NUM_FPR_ARG_REGISTERS)
{
*next_arg.f = (float) double_tmp;
next_arg.u += 1;
intarg_count++;
}
else
*fpr_base.d++ = double_tmp;
fparg_count++;
FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
break;
#endif /* have FPRs */
case FFI_TYPE_UINT128:
/* The soft float ABI for long doubles works like this, a long double
is passed in four consecutive GPRs if available. A maximum of 2
long doubles can be passed in gprs. If we do not have 4 GPRs
left, the long double is passed on the stack, 4-byte aligned. */
{
unsigned int int_tmp;
unsigned int ii;
if (intarg_count >= NUM_GPR_ARG_REGISTERS - 3)
{
if (intarg_count < NUM_GPR_ARG_REGISTERS)
intarg_count = NUM_GPR_ARG_REGISTERS;
for (ii = 0; ii < 4; ii++)
{
int_tmp = (*p_argv.ui)[ii];
*next_arg.u++ = int_tmp;
}
}
else
{
for (ii = 0; ii < 4; ii++)
{
int_tmp = (*p_argv.ui)[ii];
*gpr_base.u++ = int_tmp;
}
}
intarg_count += 4;
break;
}
case FFI_TYPE_UINT64:
case FFI_TYPE_SINT64:
if (intarg_count == NUM_GPR_ARG_REGISTERS-1)
intarg_count++;
if (intarg_count >= NUM_GPR_ARG_REGISTERS)
{
if (intarg_count % 2 != 0)
{
intarg_count++;
next_arg.u++;
}
*next_arg.ll = **p_argv.ll;
next_arg.u += 2;
}
else
{
/* The abi states only certain register pairs can be
used for passing long long int specifically (r3,r4),
(r5,r6), (r7,r8), (r9,r10). If next arg is long long
but not correct starting register of pair then skip
until the proper starting register. */
if (intarg_count % 2 != 0)
{
intarg_count ++;
gpr_base.u++;
}
*gpr_base.ll++ = **p_argv.ll;
}
intarg_count += 2;
break;
case FFI_TYPE_STRUCT:
struct_copy_size = ((*ptr)->size + 15) & ~0xF;
copy_space.c -= struct_copy_size;
memcpy (copy_space.c, *p_argv.c, (*ptr)->size);
gprvalue = (unsigned long) copy_space.c;
FFI_ASSERT (copy_space.c > next_arg.c);
FFI_ASSERT (flags & FLAG_ARG_NEEDS_COPY);
goto putgpr;
case FFI_TYPE_UINT8:
gprvalue = **p_argv.uc;
goto putgpr;
case FFI_TYPE_SINT8:
gprvalue = **p_argv.sc;
goto putgpr;
case FFI_TYPE_UINT16:
gprvalue = **p_argv.us;
goto putgpr;
case FFI_TYPE_SINT16:
gprvalue = **p_argv.ss;
goto putgpr;
case FFI_TYPE_INT:
case FFI_TYPE_UINT32:
case FFI_TYPE_SINT32:
case FFI_TYPE_POINTER:
gprvalue = **p_argv.ui;
putgpr:
if (intarg_count >= NUM_GPR_ARG_REGISTERS)
*next_arg.u++ = gprvalue;
else
*gpr_base.u++ = gprvalue;
intarg_count++;
break;
}
}
/* Check that we didn't overrun the stack... */
FFI_ASSERT (copy_space.c >= next_arg.c);
FFI_ASSERT (gpr_base.u <= stacktop.u - ASM_NEEDS_REGISTERS);
/* The assert below is testing that the number of integer arguments agrees
with the number found in ffi_prep_cif_machdep(). However, intarg_count
is incremented whenever we place an FP arg on the stack, so account for
that before our assert test. */
#ifndef __NO_FPRS__
if (fparg_count > NUM_FPR_ARG_REGISTERS)
intarg_count -= fparg_count - NUM_FPR_ARG_REGISTERS;
FFI_ASSERT (fpr_base.u
<= stacktop.u - ASM_NEEDS_REGISTERS - NUM_GPR_ARG_REGISTERS);
#endif
FFI_ASSERT (flags & FLAG_4_GPR_ARGUMENTS || intarg_count <= 4);
}
#define MIN_CACHE_LINE_SIZE 8
static void
flush_icache (char *wraddr, char *xaddr, int size)
{
int i;
for (i = 0; i < size; i += MIN_CACHE_LINE_SIZE)
__asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;"
: : "r" (xaddr + i), "r" (wraddr + i) : "memory");
__asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;" "sync;" "isync;"
: : "r"(xaddr + size - 1), "r"(wraddr + size - 1)
: "memory");
}
ffi_status FFI_HIDDEN
ffi_prep_closure_loc_sysv (ffi_closure *closure,
ffi_cif *cif,
void (*fun) (ffi_cif *, void *, void **, void *),
void *user_data,
void *codeloc)
{
unsigned int *tramp;
if (cif->abi < FFI_SYSV || cif->abi >= FFI_LAST_ABI)
return FFI_BAD_ABI;
tramp = (unsigned int *) &closure->tramp[0];
tramp[0] = 0x7c0802a6; /* mflr r0 */
tramp[1] = 0x4800000d; /* bl 10 <trampoline_initial+0x10> */
tramp[4] = 0x7d6802a6; /* mflr r11 */
tramp[5] = 0x7c0803a6; /* mtlr r0 */
tramp[6] = 0x800b0000; /* lwz r0,0(r11) */
tramp[7] = 0x816b0004; /* lwz r11,4(r11) */
tramp[8] = 0x7c0903a6; /* mtctr r0 */
tramp[9] = 0x4e800420; /* bctr */
*(void **) &tramp[2] = (void *) ffi_closure_SYSV; /* function */
*(void **) &tramp[3] = codeloc; /* context */
/* Flush the icache. */
flush_icache ((char *)tramp, (char *)codeloc, FFI_TRAMPOLINE_SIZE);
closure->cif = cif;
closure->fun = fun;
closure->user_data = user_data;
return FFI_OK;
}
/* Basically the trampoline invokes ffi_closure_SYSV, and on
entry, r11 holds the address of the closure.
After storing the registers that could possibly contain
parameters to be passed into the stack frame and setting
up space for a return value, ffi_closure_SYSV invokes the
following helper function to do most of the work. */
int
ffi_closure_helper_SYSV (ffi_closure *closure, void *rvalue,
unsigned long *pgr, ffi_dblfl *pfr,
unsigned long *pst)
{
/* rvalue is the pointer to space for return value in closure assembly */
/* pgr is the pointer to where r3-r10 are stored in ffi_closure_SYSV */
/* pfr is the pointer to where f1-f8 are stored in ffi_closure_SYSV */
/* pst is the pointer to outgoing parameter stack in original caller */
void ** avalue;
ffi_type ** arg_types;
long i, avn;
#ifndef __NO_FPRS__
long nf = 0; /* number of floating registers already used */
#endif
long ng = 0; /* number of general registers already used */
ffi_cif *cif = closure->cif;
unsigned size = cif->rtype->size;
unsigned short rtypenum = cif->rtype->type;
avalue = alloca (cif->nargs * sizeof (void *));
/* First translate for softfloat/nonlinux */
rtypenum = translate_float (cif->abi, rtypenum);
/* Copy the caller's structure return value address so that the closure
returns the data directly to the caller.
For FFI_SYSV the result is passed in r3/r4 if the struct size is less
or equal 8 bytes. */
if (rtypenum == FFI_TYPE_STRUCT
&& !((cif->abi & FFI_SYSV_STRUCT_RET) != 0 && size <= 8))
{
rvalue = (void *) *pgr;
ng++;
pgr++;
}
i = 0;
avn = cif->nargs;
arg_types = cif->arg_types;
/* Grab the addresses of the arguments from the stack frame. */
while (i < avn) {
unsigned short typenum = arg_types[i]->type;
/* We may need to handle some values depending on ABI. */
typenum = translate_float (cif->abi, typenum);
switch (typenum)
{
#ifndef __NO_FPRS__
case FFI_TYPE_FLOAT:
/* Unfortunately float values are stored as doubles
in the ffi_closure_SYSV code (since we don't check
the type in that routine). */
if (nf < NUM_FPR_ARG_REGISTERS)
{
/* FIXME? here we are really changing the values
stored in the original calling routines outgoing
parameter stack. This is probably a really
naughty thing to do but... */
double temp = pfr->d;
pfr->f = (float) temp;
avalue[i] = pfr;
nf++;
pfr++;
}
else
{
avalue[i] = pst;
pst += 1;
}
break;
case FFI_TYPE_DOUBLE:
if (nf < NUM_FPR_ARG_REGISTERS)
{
avalue[i] = pfr;
nf++;
pfr++;
}
else
{
if (((long) pst) & 4)
pst++;
avalue[i] = pst;
pst += 2;
}
break;
# if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
case FFI_TYPE_LONGDOUBLE:
if (nf < NUM_FPR_ARG_REGISTERS - 1)
{
avalue[i] = pfr;
pfr += 2;
nf += 2;
}
else
{
if (((long) pst) & 4)
pst++;
avalue[i] = pst;
pst += 4;
nf = 8;
}
break;
# endif
#endif
case FFI_TYPE_UINT128:
/* Test if for the whole long double, 4 gprs are available.
otherwise the stuff ends up on the stack. */
if (ng < NUM_GPR_ARG_REGISTERS - 3)
{
avalue[i] = pgr;
pgr += 4;
ng += 4;
}
else
{
avalue[i] = pst;
pst += 4;
ng = 8+4;
}
break;
case FFI_TYPE_SINT8:
case FFI_TYPE_UINT8:
#ifndef __LITTLE_ENDIAN__
if (ng < NUM_GPR_ARG_REGISTERS)
{
avalue[i] = (char *) pgr + 3;
ng++;
pgr++;
}
else
{
avalue[i] = (char *) pst + 3;
pst++;
}
break;
#endif
case FFI_TYPE_SINT16:
case FFI_TYPE_UINT16:
#ifndef __LITTLE_ENDIAN__
if (ng < NUM_GPR_ARG_REGISTERS)
{
avalue[i] = (char *) pgr + 2;
ng++;
pgr++;
}
else
{
avalue[i] = (char *) pst + 2;
pst++;
}
break;
#endif
case FFI_TYPE_SINT32:
case FFI_TYPE_UINT32:
case FFI_TYPE_POINTER:
if (ng < NUM_GPR_ARG_REGISTERS)
{
avalue[i] = pgr;
ng++;
pgr++;
}
else
{
avalue[i] = pst;
pst++;
}
break;
case FFI_TYPE_STRUCT:
/* Structs are passed by reference. The address will appear in a
gpr if it is one of the first 8 arguments. */
if (ng < NUM_GPR_ARG_REGISTERS)
{
avalue[i] = (void *) *pgr;
ng++;
pgr++;
}
else
{
avalue[i] = (void *) *pst;
pst++;
}
break;
case FFI_TYPE_SINT64:
case FFI_TYPE_UINT64:
/* Passing long long ints are complex, they must
be passed in suitable register pairs such as
(r3,r4) or (r5,r6) or (r6,r7), or (r7,r8) or (r9,r10)
and if the entire pair aren't available then the outgoing
parameter stack is used for both but an alignment of 8
must will be kept. So we must either look in pgr
or pst to find the correct address for this type
of parameter. */
if (ng < NUM_GPR_ARG_REGISTERS - 1)
{
if (ng & 1)
{
/* skip r4, r6, r8 as starting points */
ng++;
pgr++;
}
avalue[i] = pgr;
ng += 2;
pgr += 2;
}
else
{
if (((long) pst) & 4)
pst++;
avalue[i] = pst;
pst += 2;
ng = NUM_GPR_ARG_REGISTERS;
}
break;
default:
FFI_ASSERT (0);
}
i++;
}
(closure->fun) (cif, rvalue, avalue, closure->user_data);
/* Tell ffi_closure_SYSV how to perform return type promotions.
Because the FFI_SYSV ABI returns the structures <= 8 bytes in
r3/r4 we have to tell ffi_closure_SYSV how to treat them. We
combine the base type FFI_SYSV_TYPE_SMALL_STRUCT with the size of
the struct less one. We never have a struct with size zero.
See the comment in ffitarget.h about ordering. */
if (rtypenum == FFI_TYPE_STRUCT
&& (cif->abi & FFI_SYSV_STRUCT_RET) != 0 && size <= 8)
return FFI_SYSV_TYPE_SMALL_STRUCT - 1 + size;
return rtypenum;
}
#endif
libffi/src/powerpc/ffitarget.h
...@@ -60,45 +60,76 @@ typedef signed long ffi_sarg; ...@@ -60,45 +60,76 @@ typedef signed long ffi_sarg;
typedef enum ffi_abi { typedef enum ffi_abi {
FFI_FIRST_ABI = 0, FFI_FIRST_ABI = 0,
#ifdef POWERPC #if defined (POWERPC_AIX)
FFI_SYSV,
FFI_GCC_SYSV,
FFI_LINUX64,
FFI_LINUX,
FFI_LINUX_SOFT_FLOAT,
# if defined(POWERPC64)
FFI_DEFAULT_ABI = FFI_LINUX64,
# elif defined(__NO_FPRS__)
FFI_DEFAULT_ABI = FFI_LINUX_SOFT_FLOAT,
# elif (__LDBL_MANT_DIG__ == 106)
FFI_DEFAULT_ABI = FFI_LINUX,
# else
FFI_DEFAULT_ABI = FFI_GCC_SYSV,
# endif
#endif
#ifdef POWERPC_AIX
FFI_AIX, FFI_AIX,
FFI_DARWIN, FFI_DARWIN,
FFI_DEFAULT_ABI = FFI_AIX, FFI_DEFAULT_ABI = FFI_AIX,
#endif FFI_LAST_ABI
#ifdef POWERPC_DARWIN #elif defined (POWERPC_DARWIN)
FFI_AIX, FFI_AIX,
FFI_DARWIN, FFI_DARWIN,
FFI_DEFAULT_ABI = FFI_DARWIN, FFI_DEFAULT_ABI = FFI_DARWIN,
#endif FFI_LAST_ABI
#ifdef POWERPC_FREEBSD #else
FFI_SYSV, /* The FFI_COMPAT values are used by old code. Since libffi may be
FFI_GCC_SYSV, a shared library we have to support old values for backwards
FFI_LINUX64, compatibility. */
FFI_LINUX, FFI_COMPAT_SYSV,
FFI_LINUX_SOFT_FLOAT, FFI_COMPAT_GCC_SYSV,
FFI_DEFAULT_ABI = FFI_SYSV, FFI_COMPAT_LINUX64,
FFI_COMPAT_LINUX,
FFI_COMPAT_LINUX_SOFT_FLOAT,
# if defined (POWERPC64)
/* This bit, always set in new code, must not be set in any of the
old FFI_COMPAT values that might be used for 64-bit linux. We
only need worry about FFI_COMPAT_LINUX64, but to be safe avoid
all old values. */
FFI_LINUX = 8,
/* This and following bits can reuse FFI_COMPAT values. */
FFI_LINUX_STRUCT_ALIGN = 1,
FFI_LINUX_LONG_DOUBLE_128 = 2,
FFI_DEFAULT_ABI = (FFI_LINUX
# ifdef __STRUCT_PARM_ALIGN__
| FFI_LINUX_STRUCT_ALIGN
# endif
# ifdef __LONG_DOUBLE_128__
| FFI_LINUX_LONG_DOUBLE_128
# endif
),
FFI_LAST_ABI = 12
# else
/* This bit, always set in new code, must not be set in any of the
old FFI_COMPAT values that might be used for 32-bit linux/sysv/bsd. */
FFI_SYSV = 8,
/* This and following bits can reuse FFI_COMPAT values. */
FFI_SYSV_SOFT_FLOAT = 1,
FFI_SYSV_STRUCT_RET = 2,
FFI_SYSV_IBM_LONG_DOUBLE = 4,
FFI_SYSV_LONG_DOUBLE_128 = 16,
FFI_DEFAULT_ABI = (FFI_SYSV
# ifdef __NO_FPRS__
| FFI_SYSV_SOFT_FLOAT
# endif
# if (defined (__SVR4_STRUCT_RETURN) \
|| defined (POWERPC_FREEBSD) && !defined (__AIX_STRUCT_RETURN))
| FFI_SYSV_STRUCT_RET
# endif
# if __LDBL_MANT_DIG__ == 106
| FFI_SYSV_IBM_LONG_DOUBLE
# endif
# ifdef __LONG_DOUBLE_128__
| FFI_SYSV_LONG_DOUBLE_128
# endif
),
FFI_LAST_ABI = 32
# endif
#endif #endif
FFI_LAST_ABI
} ffi_abi; } ffi_abi;
#endif #endif
...@@ -117,9 +148,7 @@ typedef enum ffi_abi { ...@@ -117,9 +148,7 @@ typedef enum ffi_abi {
/* Needed for soft-float long-double-128 support. */ /* Needed for soft-float long-double-128 support. */
#define FFI_TYPE_UINT128 (FFI_TYPE_LAST + 1) #define FFI_TYPE_UINT128 (FFI_TYPE_LAST + 1)
/* Needed for FFI_SYSV small structure returns. /* Needed for FFI_SYSV small structure returns. */
We use two flag bits, (FLAG_SYSV_SMST_R3, FLAG_SYSV_SMST_R4) which are
defined in ffi.c, to determine the exact return type and its size. */
#define FFI_SYSV_TYPE_SMALL_STRUCT (FFI_TYPE_LAST + 2) #define FFI_SYSV_TYPE_SMALL_STRUCT (FFI_TYPE_LAST + 2)
/* Used by ELFv2 for homogenous structure returns. */ /* Used by ELFv2 for homogenous structure returns. */
......
libffi/src/powerpc/linux64.S
...@@ -29,7 +29,7 @@ ...@@ -29,7 +29,7 @@
#include <fficonfig.h> #include <fficonfig.h>
#include <ffi.h> #include <ffi.h>
#ifdef __powerpc64__ #ifdef POWERPC64
.hidden ffi_call_LINUX64 .hidden ffi_call_LINUX64
.globl ffi_call_LINUX64 .globl ffi_call_LINUX64
# if _CALL_ELF == 2 # if _CALL_ELF == 2
......
libffi/src/powerpc/linux64_closure.S
...@@ -30,7 +30,7 @@ ...@@ -30,7 +30,7 @@
.file "linux64_closure.S" .file "linux64_closure.S"
#ifdef __powerpc64__ #ifdef POWERPC64
FFI_HIDDEN (ffi_closure_LINUX64) FFI_HIDDEN (ffi_closure_LINUX64)
.globl ffi_closure_LINUX64 .globl ffi_closure_LINUX64
# if _CALL_ELF == 2 # if _CALL_ELF == 2
...@@ -60,13 +60,11 @@ ffi_closure_LINUX64: ...@@ -60,13 +60,11 @@ ffi_closure_LINUX64:
# endif # endif
# if _CALL_ELF == 2 # if _CALL_ELF == 2
# 32 byte special reg save area + 64 byte parm save area and retval # 32 byte special reg save area + 64 byte parm save area
# + 13*8 fpr save area + round to 16 # + 64 byte retval area + 13*8 fpr save area + round to 16
# define STACKFRAME 208 # define STACKFRAME 272
# define PARMSAVE 32 # define PARMSAVE 32
# No parameter save area is needed for the call to ffi_closure_helper_LINUX64, # define RETVAL PARMSAVE+64
# so return value can start there.
# define RETVAL PARMSAVE
# else # else
# 48 bytes special reg save area + 64 bytes parm save area # 48 bytes special reg save area + 64 bytes parm save area
# + 16 bytes retval area + 13*8 bytes fpr save area + round to 16 # + 16 bytes retval area + 13*8 bytes fpr save area + round to 16
...@@ -85,8 +83,8 @@ ffi_closure_LINUX64: ...@@ -85,8 +83,8 @@ ffi_closure_LINUX64:
bt 7, .Lparmsave bt 7, .Lparmsave
# Our caller has not allocated a parameter save area. # Our caller has not allocated a parameter save area.
# We need to allocate one here and use it to pass gprs to # We need to allocate one here and use it to pass gprs to
# ffi_closure_helper_LINUX64. The return value area will do. # ffi_closure_helper_LINUX64.
addi %r12, %r1, -STACKFRAME+RETVAL addi %r12, %r1, -STACKFRAME+PARMSAVE
.Lparmsave: .Lparmsave:
std %r0, 16(%r1) std %r0, 16(%r1)
# Save general regs into parm save area # Save general regs into parm save area
......
libffi/src/powerpc/ppc_closure.S
...@@ -31,7 +31,7 @@ ...@@ -31,7 +31,7 @@
.file "ppc_closure.S" .file "ppc_closure.S"
#ifndef __powerpc64__ #ifndef POWERPC64
ENTRY(ffi_closure_SYSV) ENTRY(ffi_closure_SYSV)
.LFB1: .LFB1:
...@@ -378,8 +378,7 @@ END(ffi_closure_SYSV) ...@@ -378,8 +378,7 @@ END(ffi_closure_SYSV)
.align 2 .align 2
.LEFDE1: .LEFDE1:
#endif
#if defined __ELF__ && defined __linux__ #if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits .section .note.GNU-stack,"",@progbits
#endif #endif
#endif
libffi/src/powerpc/sysv.S
...@@ -30,7 +30,7 @@ ...@@ -30,7 +30,7 @@
#include <ffi.h> #include <ffi.h>
#include <powerpc/asm.h> #include <powerpc/asm.h>
#ifndef __powerpc64__ #ifndef POWERPC64
.globl ffi_prep_args_SYSV .globl ffi_prep_args_SYSV
ENTRY(ffi_call_SYSV) ENTRY(ffi_call_SYSV)
.LFB1: .LFB1:
...@@ -213,8 +213,8 @@ END(ffi_call_SYSV) ...@@ -213,8 +213,8 @@ END(ffi_call_SYSV)
.uleb128 0x1c .uleb128 0x1c
.align 2 .align 2
.LEFDE1: .LEFDE1:
#endif
#if defined __ELF__ && defined __linux__ #if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits .section .note.GNU-stack,"",@progbits
#endif #endif
#endif
libffi/src/prep_cif.c
...@@ -126,6 +126,10 @@ ffi_status FFI_HIDDEN ffi_prep_cif_core(ffi_cif *cif, ffi_abi abi, ...@@ -126,6 +126,10 @@ ffi_status FFI_HIDDEN ffi_prep_cif_core(ffi_cif *cif, ffi_abi abi,
cif->flags = 0; cif->flags = 0;
#if HAVE_LONG_DOUBLE_VARIANT
ffi_prep_types (abi);
#endif
/* Initialize the return type if necessary */ /* Initialize the return type if necessary */
if ((cif->rtype->size == 0) && (initialize_aggregate(cif->rtype) != FFI_OK)) if ((cif->rtype->size == 0) && (initialize_aggregate(cif->rtype) != FFI_OK))
return FFI_BAD_TYPEDEF; return FFI_BAD_TYPEDEF;
......
libffi/src/types.c
...@@ -44,6 +44,17 @@ const ffi_type ffi_type_##name = { \ ...@@ -44,6 +44,17 @@ const ffi_type ffi_type_##name = { \
id, NULL \ id, NULL \
} }
#define FFI_NONCONST_TYPEDEF(name, type, id) \
struct struct_align_##name { \
char c; \
type x; \
}; \
ffi_type ffi_type_##name = { \
sizeof(type), \
offsetof(struct struct_align_##name, x), \
id, NULL \
}
/* Size and alignment are fake here. They must not be 0. */ /* Size and alignment are fake here. They must not be 0. */
const ffi_type ffi_type_void = { const ffi_type ffi_type_void = {
1, 1, FFI_TYPE_VOID, NULL 1, 1, FFI_TYPE_VOID, NULL
...@@ -73,5 +84,9 @@ FFI_TYPEDEF(double, double, FFI_TYPE_DOUBLE); ...@@ -73,5 +84,9 @@ FFI_TYPEDEF(double, double, FFI_TYPE_DOUBLE);
# endif # endif
const ffi_type ffi_type_longdouble = { 16, 16, 4, NULL }; const ffi_type ffi_type_longdouble = { 16, 16, 4, NULL };
#elif FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE #elif FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
# if HAVE_LONG_DOUBLE_VARIANT
FFI_NONCONST_TYPEDEF(longdouble, long double, FFI_TYPE_LONGDOUBLE);
# else
FFI_TYPEDEF(longdouble, long double, FFI_TYPE_LONGDOUBLE); FFI_TYPEDEF(longdouble, long double, FFI_TYPE_LONGDOUBLE);
# endif
#endif #endif
libffi/testsuite/Makefile.in
...@@ -90,6 +90,7 @@ FFI_EXEC_TRAMPOLINE_TABLE = @FFI_EXEC_TRAMPOLINE_TABLE@ ...@@ -90,6 +90,7 @@ FFI_EXEC_TRAMPOLINE_TABLE = @FFI_EXEC_TRAMPOLINE_TABLE@
FGREP = @FGREP@ FGREP = @FGREP@
GREP = @GREP@ GREP = @GREP@
HAVE_LONG_DOUBLE = @HAVE_LONG_DOUBLE@ HAVE_LONG_DOUBLE = @HAVE_LONG_DOUBLE@
HAVE_LONG_DOUBLE_VARIANT = @HAVE_LONG_DOUBLE_VARIANT@
INSTALL = @INSTALL@ INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@ INSTALL_DATA = @INSTALL_DATA@
INSTALL_PROGRAM = @INSTALL_PROGRAM@ INSTALL_PROGRAM = @INSTALL_PROGRAM@
......
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