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riscv-gcc-1
Commit bb8ebb7f by Richard Henderson Committed by Richard Henderson
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flags.h (g_switch_value, [...]): Declare. 

        * flags.h (g_switch_value, g_switch_set): Declare.
        * alpha.c (override_options): Set g_switch_value=8 if not set.
        * alpha/elf.h (CC1_SPEC): New.
        (ASM_SPEC): New.
        (LINK_SPEC): Pass along the -G value we were given.
        (LOCAL_ASM_OP): Remove.
        (ASM_OUTPUT_ALIGNED_LOCAL): Output to .bss or .sbss by size.
        (MAX_OFILE_ALIGNMENT): New.
        (BSS_SECTION_ASM_OP, SBSS_SECTION_ASM_OP, SDATA_SECTION_ASM_OP): New.
        (EXTRA_SECTIONS): Add sbss and sdata.
        (SECTION_FUNCTION_TEMPLATE): New.
        (EXTRA_SECTION_FUNCTIONS): Use it.
        (CTORS_SECTION_FUNCTION, DTORS_SECTION_FUNCTION): Remove.
        (SELECT_SECTION): Use sdata when small enough.
        * alpha/linux.h (ASM_SPEC): Remove.

From-SVN: r18225
parent 3eaa4d3b
Showing with 87 additions and 30 deletions
gcc/ChangeLog
Tue Feb 24 23:54:07 1998 Richard Henderson <rth@cygnus.com>
* flags.h (g_switch_value, g_switch_set): Declare.
* alpha.c (override_options): Set g_switch_value=8 if not set.
* alpha/elf.h (CC1_SPEC): New.
(ASM_SPEC): New.
(LINK_SPEC): Pass along the -G value we were given.
(LOCAL_ASM_OP): Remove.
(ASM_OUTPUT_ALIGNED_LOCAL): Output to .bss or .sbss by size.
(MAX_OFILE_ALIGNMENT): New.
(BSS_SECTION_ASM_OP, SBSS_SECTION_ASM_OP, SDATA_SECTION_ASM_OP): New.
(EXTRA_SECTIONS): Add sbss and sdata.
(SECTION_FUNCTION_TEMPLATE): New.
(EXTRA_SECTION_FUNCTIONS): Use it.
(CTORS_SECTION_FUNCTION, DTORS_SECTION_FUNCTION): Remove.
(SELECT_SECTION): Use sdata when small enough.
* alpha/linux.h (ASM_SPEC): Remove.
Mon Feb 23 15:09:18 1998 Bruno Haible <bruno@linuix.mathematik.uni-karlsruhe.de>
* config.sub (sco5): Fix typo.
......
gcc/config/alpha/alpha.c
......@@ -301,6 +301,10 @@ override_options ()
alpha_memory_latency = lat;
}
/* Default the definition of "small data" to 8 bytes. */
if (!g_switch_set)
g_switch_value = 8;
}
/* Returns 1 if VALUE is a mask that contains full bytes of zero or ones. */
......
gcc/config/alpha/elf.h
......@@ -30,8 +30,15 @@ Boston, MA 02111-1307, USA. */
#undef ASM_FINAL_SPEC
#undef CC1_SPEC
#define CC1_SPEC "%{G*}"
#undef ASM_SPEC
#define ASM_SPEC "%{G*} %{relax:-relax}"
#undef LINK_SPEC
#define LINK_SPEC "-m elf64alpha -G 8 %{O*:-O3} %{!O*:-O1} \
#define LINK_SPEC "-m elf64alpha %{G*} %{relax:-relax} \
%{O*:-O3} %{!O*:-O1} \
%{shared:-shared} \
%{!shared: \
%{!static: \
......@@ -142,15 +149,27 @@ do { \
the linker seems to want the alignment of data objects
to depend on their types. We do exactly that here. */
#define LOCAL_ASM_OP ".local"
#undef ASM_OUTPUT_ALIGNED_LOCAL
#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
do { \
fprintf ((FILE), "\t%s\t", LOCAL_ASM_OP); \
assemble_name ((FILE), (NAME)); \
fprintf ((FILE), "\n"); \
ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN); \
if ((SIZE) <= g_switch_value) \
sbss_section(); \
else \
bss_section(); \
fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
assemble_name (FILE, NAME); \
putc (',', FILE); \
fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
putc ('\n', FILE); \
if (!flag_inhibit_size_directive) \
{ \
fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
assemble_name (FILE, NAME); \
fprintf (FILE, ",%d\n", (SIZE)); \
} \
ASM_OUTPUT_ALIGN ((FILE), exact_log2((ALIGN) / BITS_PER_UNIT)); \
ASM_OUTPUT_LABEL(FILE, NAME); \
ASM_OUTPUT_SKIP((FILE), (SIZE)); \
} while (0)
/* This is the pseudo-op used to generate a 64-bit word of data with a
......@@ -158,6 +177,18 @@ do { \
#define INT_ASM_OP ".quad"
/* Biggest alignment supported by the object file format of this
machine. Use this macro to limit the alignment which can be
specified using the `__attribute__ ((aligned (N)))' construct. If
not defined, the default value is `BIGGEST_ALIGNMENT'.
This value is really 2^63. Since gcc figures the alignment in bits,
we could only potentially get to 2^60 on suitible hosts. Due to other
considerations in varasm, we must restrict this to what fits in an int. */
#define MAX_OFILE_ALIGNMENT \
(1 << (HOST_BITS_PER_INT < 64 ? HOST_BITS_PER_INT - 2 : 62))
/* This is the pseudo-op used to generate a contiguous sequence of byte
values from a double-quoted string WITHOUT HAVING A TERMINATING NUL
AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */
......@@ -195,6 +226,11 @@ do { \
#define CTORS_SECTION_ASM_OP ".section\t.ctors,\"aw\""
#define DTORS_SECTION_ASM_OP ".section\t.dtors,\"aw\""
/* Handle the small data sections. */
#define BSS_SECTION_ASM_OP ".section\t.bss"
#define SBSS_SECTION_ASM_OP ".section\t.sbss,\"aw\""
#define SDATA_SECTION_ASM_OP ".section\t.sdata,\"aw\""
/* On svr4, we *do* have support for the .init and .fini sections, and we
can put stuff in there to be executed before and after `main'. We let
crtstuff.c and other files know this by defining the following symbols.
......@@ -210,7 +246,7 @@ do { \
includes this file. */
#undef EXTRA_SECTIONS
#define EXTRA_SECTIONS in_const, in_ctors, in_dtors
#define EXTRA_SECTIONS in_const, in_ctors, in_dtors, in_sbss, in_sdata
/* A default list of extra section function definitions. For targets
that use additional sections (e.g. .tdesc) you should override this
......@@ -219,8 +255,10 @@ do { \
#undef EXTRA_SECTION_FUNCTIONS
#define EXTRA_SECTION_FUNCTIONS \
CONST_SECTION_FUNCTION \
CTORS_SECTION_FUNCTION \
DTORS_SECTION_FUNCTION
SECTION_FUNCTION_TEMPLATE(ctors_section, in_ctors, CTORS_SECTION_ASM_OP) \
SECTION_FUNCTION_TEMPLATE(dtors_section, in_dtors, DTORS_SECTION_ASM_OP) \
SECTION_FUNCTION_TEMPLATE(sbss_section, in_sbss, SBSS_SECTION_ASM_OP) \
SECTION_FUNCTION_TEMPLATE(sdata_section, in_sdata, SDATA_SECTION_ASM_OP)
#undef READONLY_DATA_SECTION
#define READONLY_DATA_SECTION() const_section ()
......@@ -240,27 +278,16 @@ const_section () \
} \
}
#define CTORS_SECTION_FUNCTION \
void \
ctors_section () \
#define SECTION_FUNCTION_TEMPLATE(FN, ENUM, OP) \
void FN () \
{ \
if (in_section != in_ctors) \
if (in_section != ENUM) \
{ \
fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
in_section = in_ctors; \
fprintf (asm_out_file, "%s\n", OP); \
in_section = ENUM; \
} \
}
#define DTORS_SECTION_FUNCTION \
void \
dtors_section () \
{ \
if (in_section != in_dtors) \
{ \
fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
in_section = in_dtors; \
} \
}
/* Switch into a generic section.
This is currently only used to support section attributes.
......@@ -314,7 +341,13 @@ dtors_section () \
|| !DECL_INITIAL (DECL) \
|| (DECL_INITIAL (DECL) != error_mark_node \
&& !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
data_section (); \
{ \
int size = int_size_in_bytes (TREE_TYPE (DECL)); \
if (size >= 0 && size <= g_switch_value) \
sdata_section (); \
else \
data_section (); \
} \
else \
const_section (); \
} \
......
gcc/config/alpha/linux.h
......@@ -30,9 +30,6 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#undef LIB_SPEC
#define LIB_SPEC "%{pg:-lgmon} %{pg:-lc_p} %{!pg:-lc}"
#undef ASM_SPEC
#define ASM_SPEC "-nocpp"
/* Generate calls to memcpy, etc., not bcopy, etc. */
#define TARGET_MEM_FUNCTIONS
......
gcc/flags.h
......@@ -468,3 +468,7 @@ extern int flag_prefix_function_name;
/* Nonzero if the current function is a thunk, so we should try to cut
corners where we can. */
extern int current_function_is_thunk;
/* Value of the -G xx switch, and whether it was passed or not. */
extern int g_switch_value;
extern int g_switch_set;
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