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arm.h (ASM_OUTPUT_REG_PUSH): Handle STATIC_CHAIN_REGNUM specially for Thumb-1.

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gcc/
	* config/arm/arm.h (ASM_OUTPUT_REG_PUSH): Handle STATIC_CHAIN_REGNUM
	specially for Thumb-1.
	(ASM_OUTPUT_REG_POP): Likewise.

From-SVN: r154372
This commit is contained in:
Julian Brown 2009-11-20 16:48:28 +00:00 • committed by Julian Brown
parent 10d3a72a80
commit 2ee67fbb88
2 changed files with 27 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2009-11-20 Julian Brown <julian@codesourcery.com>
* config/arm/arm.h (ASM_OUTPUT_REG_PUSH): Handle STATIC_CHAIN_REGNUM
specially for Thumb-1.
(ASM_OUTPUT_REG_POP): Likewise.
2009-11-19 Jason Merrill <jason@redhat.com>
* dwarf2out.c (get_context_die): Take TYPE_MAIN_VARIANT.

22
gcc/config/arm/arm.h
View file

@ -2274,24 +2274,44 @@ extern int making_const_table;
#define ASM_APP_OFF (TARGET_THUMB1 ? "\t.code\t16\n" : \
TARGET_THUMB2 ? "\t.thumb\n" : "")
/* Output a push or a pop instruction (only used when profiling). */
/* Output a push or a pop instruction (only used when profiling).
We can't push STATIC_CHAIN_REGNUM (r12) directly with Thumb-1. We know
that ASM_OUTPUT_REG_PUSH will be matched with ASM_OUTPUT_REG_POP, and
that r7 isn't used by the function profiler, so we can use it as a
scratch reg. WARNING: This isn't safe in the general case! It may be
sensitive to future changes in final.c:profile_function. */
#define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \
do \
{ \
if (TARGET_ARM) \
asm_fprintf (STREAM,"\tstmfd\t%r!,{%r}\n", \
STACK_POINTER_REGNUM, REGNO); \
else if (TARGET_THUMB1 \
&& (REGNO) == STATIC_CHAIN_REGNUM) \
{ \
asm_fprintf (STREAM, "\tpush\t{r7}\n"); \
asm_fprintf (STREAM, "\tmov\tr7, %r\n", REGNO);\
asm_fprintf (STREAM, "\tpush\t{r7}\n"); \
} \
else \
asm_fprintf (STREAM, "\tpush {%r}\n", REGNO); \
} while (0)
/* See comment for ASM_OUTPUT_REG_PUSH concerning Thumb-1 issue. */
#define ASM_OUTPUT_REG_POP(STREAM, REGNO) \
do \
{ \
if (TARGET_ARM) \
asm_fprintf (STREAM, "\tldmfd\t%r!,{%r}\n", \
STACK_POINTER_REGNUM, REGNO); \
else if (TARGET_THUMB1 \
&& (REGNO) == STATIC_CHAIN_REGNUM) \
{ \
asm_fprintf (STREAM, "\tpop\t{r7}\n"); \
asm_fprintf (STREAM, "\tmov\t%r, r7\n", REGNO);\
asm_fprintf (STREAM, "\tpop\t{r7}\n"); \
} \
else \
asm_fprintf (STREAM, "\tpop {%r}\n", REGNO); \
} while (0)