Skip to content

R
riscv-gcc-1
Commit dfccfad9 by Bob Wilson Committed by Bob Wilson
Options

crti.asm (_init, _fini): Add alternate code for new call0 ABI. 

        * config/xtensa/crti.asm (_init, _fini): Add alternate code for new
        call0 ABI.
        * config/xtensa/crtn.asm (_init, _fini): Likewise.
        * config/xtensa/lib1funcs.asm (__mulsi3, __udivsi3, __divsi3,
        __umodsi3, __modsi3): Likewise.
        * config/xtensa/t-xtensa (crti.o, crtn.o): Add $(GCC_CFLAGS) and
        $(INCLUDES).

From-SVN: r70552
parent ba45771e
Showing with 84 additions and 26 deletions
gcc/ChangeLog
2003-08-18 Bob Wilson <bob.wilson@acm.org>
* config/xtensa/crti.asm (_init, _fini): Add alternate code for new
call0 ABI.
* config/xtensa/crtn.asm (_init, _fini): Likewise.
* config/xtensa/lib1funcs.asm (__mulsi3, __udivsi3, __divsi3,
__umodsi3, __modsi3): Likewise.
* config/xtensa/t-xtensa (crti.o, crtn.o): Add $(GCC_CFLAGS) and
$(INCLUDES).
2003-08-18 Aldy Hernandez <aldyh@redhat.com>
* config/rs6000/spe.md ("*nabssf2_gpr"): New.
......
gcc/config/xtensa/crti.asm
......@@ -29,16 +29,28 @@
# .init sections. Users may put any desired instructions in those
# sections.
#include "xtensa-config.h"
.section .init
.globl _init
.type _init,@function
.align 4
_init:
#if XCHAL_HAVE_WINDOWED && !__XTENSA_CALL0_ABI__
entry sp, 64
#else
addi sp, sp, -32
s32i a0, sp, 0
#endif
.section .fini
.globl _fini
.type _fini,@function
.align 4
_fini:
#if XCHAL_HAVE_WINDOWED && !__XTENSA_CALL0_ABI__
entry sp, 64
#else
addi sp, sp, -32
s32i a0, sp, 0
#endif
gcc/config/xtensa/crtn.asm
......@@ -29,8 +29,22 @@
# fact return. Users may put any desired instructions in those sections.
# This file is the last thing linked into any executable.
#include "xtensa-config.h"
.section .init
#if XCHAL_HAVE_WINDOWED && !__XTENSA_CALL0_ABI__
retw
#else
l32i a0, sp, 0
addi sp, sp, 32
ret
#endif
.section .fini
#if XCHAL_HAVE_WINDOWED && !__XTENSA_CALL0_ABI__
retw
#else
l32i a0, sp, 0
addi sp, sp, 32
ret
#endif
gcc/config/xtensa/lib1funcs.asm
......@@ -75,19 +75,41 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
#endif
.endm
# Define macros for function entry and return, supporting either the
# standard register windowed ABI or the non-windowed call0 ABI. These
# macros do not allocate any extra stack space, so they only work for
# leaf functions that do not need to spill anything to the stack.
.macro abi_entry reg, size
#if XCHAL_HAVE_WINDOWED && !__XTENSA_CALL0_ABI__
entry \reg, \size
#else
/* do nothing */
#endif
.endm
.macro abi_return
#if XCHAL_HAVE_WINDOWED && !__XTENSA_CALL0_ABI__
retw
#else
ret
#endif
.endm
#ifdef L_mulsi3
.align 4
.global __mulsi3
.type __mulsi3,@function
__mulsi3:
entry sp, 32
abi_entry sp, 32
#if XCHAL_HAVE_MUL16
or a4, a2, a3
srai a4, a4, 16
bnez a4, .LMUL16
mul16u a2, a2, a3
retw
abi_return
.LMUL16:
srai a4, a2, 16
srai a5, a3, 16
......@@ -143,7 +165,7 @@ __mulsi3:
bgeui a3, 16, .Lmult_main_loop
neg a3, a2
movltz a2, a3, a5
retw
abi_return
.align 4
.Lmult_main_loop:
......@@ -173,7 +195,7 @@ __mulsi3:
#endif /* !XCHAL_HAVE_MUL16 && !XCHAL_HAVE_MAC16 */
retw
abi_return
.size __mulsi3,.-__mulsi3
#endif /* L_mulsi3 */
......@@ -242,7 +264,7 @@ __nsau_data:
.global __udivsi3
.type __udivsi3,@function
__udivsi3:
entry sp, 32
abi_entry sp, 32
bltui a3, 2, .Lle_one # check if the divisor <= 1
mov a6, a2 # keep dividend in a6
......@@ -275,7 +297,7 @@ __udivsi3:
bltu a6, a3, .Lreturn
addi a2, a2, 1 # increment quotient if dividend >= divisor
.Lreturn:
retw
abi_return
.Lspecial:
# return dividend >= divisor
......@@ -283,14 +305,14 @@ __udivsi3:
bltu a6, a3, .Lreturn2
movi a2, 1
.Lreturn2:
retw
abi_return
.Lle_one:
beqz a3, .Lerror # if divisor == 1, return the dividend
retw
abi_return
.Lerror:
movi a2, 0 # just return 0; could throw an exception
retw
abi_return
.size __udivsi3,.-__udivsi3
#endif /* L_udivsi3 */
......@@ -301,7 +323,7 @@ __udivsi3:
.global __divsi3
.type __divsi3,@function
__divsi3:
entry sp, 32
abi_entry sp, 32
xor a7, a2, a3 # sign = dividend ^ divisor
do_abs a6, a2, a4 # udividend = abs(dividend)
do_abs a3, a3, a4 # udivisor = abs(divisor)
......@@ -337,7 +359,7 @@ __divsi3:
.Lreturn:
neg a5, a2
movltz a2, a5, a7 # return (sign < 0) ? -quotient : quotient
retw
abi_return
.Lspecial:
movi a2, 0
......@@ -346,16 +368,16 @@ __divsi3:
movi a4, -1
movltz a2, a4, a7 # else return (sign < 0) ? -1 : 1
.Lreturn2:
retw
abi_return
.Lle_one:
beqz a3, .Lerror
neg a2, a6 # if udivisor == 1, then return...
movgez a2, a6, a7 # (sign < 0) ? -udividend : udividend
retw
abi_return
.Lerror:
movi a2, 0 # just return 0; could throw an exception
retw
abi_return
.size __divsi3,.-__divsi3
#endif /* L_divsi3 */
......@@ -366,7 +388,7 @@ __divsi3:
.global __umodsi3
.type __umodsi3,@function
__umodsi3:
entry sp, 32
abi_entry sp, 32
bltui a3, 2, .Lle_one # check if the divisor is <= 1
do_nsau a5, a2, a6, a7 # dividend_shift = nsau(dividend)
......@@ -395,19 +417,19 @@ __umodsi3:
bltu a2, a3, .Lreturn
sub a2, a2, a3 # subtract once more if dividend >= divisor
.Lreturn:
retw
abi_return
.Lspecial:
bltu a2, a3, .Lreturn2
sub a2, a2, a3 # subtract once if dividend >= divisor
.Lreturn2:
retw
abi_return
.Lle_one:
# the divisor is either 0 or 1, so just return 0.
# someday we may want to throw an exception if the divisor is 0.
movi a2, 0
retw
abi_return
.size __umodsi3,.-__umodsi3
#endif /* L_umodsi3 */
......@@ -418,7 +440,7 @@ __umodsi3:
.global __modsi3
.type __modsi3,@function
__modsi3:
entry sp, 32
abi_entry sp, 32
mov a7, a2 # save original (signed) dividend
do_abs a2, a2, a4 # udividend = abs(dividend)
do_abs a3, a3, a4 # udivisor = abs(divisor)
......@@ -452,7 +474,7 @@ __modsi3:
bgez a7, .Lpositive
neg a2, a2 # if (dividend < 0), return -udividend
.Lpositive:
retw
abi_return
.Lspecial:
bltu a2, a3, .Lreturn2
......@@ -461,13 +483,13 @@ __modsi3:
bgez a7, .Lpositive2
neg a2, a2 # if (dividend < 0), return -udividend
.Lpositive2:
retw
abi_return
.Lle_one:
# udivisor is either 0 or 1, so just return 0.
# someday we may want to throw an exception if udivisor is 0.
movi a2, 0
retw
abi_return
.size __modsi3,.-__modsi3
#endif /* L_modsi3 */
gcc/config/xtensa/t-xtensa
......@@ -17,11 +17,11 @@ LIB1ASMFUNCS = _mulsi3 _nsau _divsi3 _modsi3 _udivsi3 _umodsi3
LIB2FUNCS_EXTRA += $(srcdir)/config/xtensa/lib2funcs.S
$(T)crti.o: $(srcdir)/config/xtensa/crti.asm $(GCC_PASSES)
$(GCC_FOR_TARGET) $(MULTILIB_CFLAGS) -c -o $(T)crti.o \
-x assembler-with-cpp $(srcdir)/config/xtensa/crti.asm
$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
-c -o $(T)crti.o -x assembler-with-cpp $(srcdir)/config/xtensa/crti.asm
$(T)crtn.o: $(srcdir)/config/xtensa/crtn.asm $(GCC_PASSES)
$(GCC_FOR_TARGET) $(MULTILIB_CFLAGS) -c -o $(T)crtn.o \
-x assembler-with-cpp $(srcdir)/config/xtensa/crtn.asm
$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
-c -o $(T)crtn.o -x assembler-with-cpp $(srcdir)/config/xtensa/crtn.asm
$(out_object_file): gt-xtensa.h
gt-xtensa.h : s-gtype ; @true
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment