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Commit e538e028 by Richard Sandiford Committed by Richard Sandiford
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mips.h (STATIC_CHAIN_REGNUM): Remap to $15. 

gcc/
	* config/mips/mips.h (STATIC_CHAIN_REGNUM): Remap to $15.
	(FUNCTION_PROFILER): Save the static chain pointer into $2
	beforehand and restore it aftewards.
	(TRAMPOLINE_TEMPLATE): Adjust accordingly.  Load the target
	address directly into $25 and call the function through $25;
	do not clobber $3.  Pad the DImode version to cover the space
	left by the deleted $25 <- $3 move.
	(TRAMPOLINE_SIZE): Adjust the size of the SImode version after
	the removal of the $25 <- $3 move.
	(INITIALIZE_TRAMPOLINE): Update offsets accordingly.
	* config/mips/sdemtk.h (FUNCTION_PROFILER): As for mips.h.

From-SVN: r138909
parent b2b61607
Showing with 39 additions and 10 deletions
gcc/ChangeLog
2008-08-09 Richard Sandiford <rdsandiford@googlemail.com>
* config/mips/mips.h (STATIC_CHAIN_REGNUM): Remap to $15.
(FUNCTION_PROFILER): Save the static chain pointer into $2
beforehand and restore it aftewards.
(TRAMPOLINE_TEMPLATE): Adjust accordingly. Load the target
address directly into $25 and call the function through $25;
do not clobber $3. Pad the DImode version to cover the space
left by the deleted $25 <- $3 move.
(TRAMPOLINE_SIZE): Adjust the size of the SImode version after
the removal of the $25 <- $3 move.
(INITIALIZE_TRAMPOLINE): Update offsets accordingly.
* config/mips/sdemtk.h (FUNCTION_PROFILER): As for mips.h.
2008-08-09 Richard Sandiford <rdsandiford@googlemail.com>
Daniel Jacobowitz <dan@codesourcery.com>
* config/mips/mips.h (FUNCTION_NAME_ALREADY_DECLARED): Delete.
......
gcc/config/mips/mips.h
......@@ -1657,7 +1657,7 @@ enum mips_code_readable_setting {
#define FRAME_POINTER_REQUIRED (mips_frame_pointer_required ())
/* Register in which static-chain is passed to a function. */
#define STATIC_CHAIN_REGNUM (GP_REG_FIRST + 2)
#define STATIC_CHAIN_REGNUM (GP_REG_FIRST + 15)
/* Registers used as temporaries in prologue/epilogue code. If we're
generating mips16 code, these registers must come from the core set
......@@ -2181,6 +2181,10 @@ typedef struct mips_args {
fprintf (FILE, "\t.set\tnoat\n"); \
fprintf (FILE, "\tmove\t%s,%s\t\t# save current return address\n", \
reg_names[GP_REG_FIRST + 1], reg_names[GP_REG_FIRST + 31]); \
/* _mcount treats $2 as the static chain register. */ \
if (cfun->static_chain_decl != NULL) \
fprintf (FILE, "\tmove\t%s,%s\n", reg_names[2], \
reg_names[STATIC_CHAIN_REGNUM]); \
if (!TARGET_NEWABI) \
{ \
fprintf (FILE, \
......@@ -2192,6 +2196,10 @@ typedef struct mips_args {
} \
fprintf (FILE, "\tjal\t_mcount\n"); \
fprintf (FILE, "\t.set\tat\n"); \
/* _mcount treats $2 as the static chain register. */ \
if (cfun->static_chain_decl != NULL) \
fprintf (FILE, "\tmove\t%s,%s\n", reg_names[STATIC_CHAIN_REGNUM], \
reg_names[2]); \
}
/* The profiler preserves all interesting registers, including $31. */
......@@ -2231,20 +2239,19 @@ typedef struct mips_args {
fprintf (STREAM, "\t.word\t0x00000000\t\t# nop\n"); \
if (ptr_mode == DImode) \
{ \
fprintf (STREAM, "\t.word\t0xdfe30014\t\t# ld $3,20($31)\n"); \
fprintf (STREAM, "\t.word\t0xdfe2001c\t\t# ld $2,28($31)\n"); \
fprintf (STREAM, "\t.word\t0x0060c82d\t\t# dmove $25,$3\n"); \
fprintf (STREAM, "\t.word\t0xdff90014\t\t# ld $25,20($31)\n"); \
fprintf (STREAM, "\t.word\t0xdfef001c\t\t# ld $15,28($31)\n"); \
} \
else \
{ \
fprintf (STREAM, "\t.word\t0x8fe30014\t\t# lw $3,20($31)\n"); \
fprintf (STREAM, "\t.word\t0x8fe20018\t\t# lw $2,24($31)\n"); \
fprintf (STREAM, "\t.word\t0x0060c821\t\t# move $25,$3\n"); \
fprintf (STREAM, "\t.word\t0x8ff90010\t\t# lw $25,16($31)\n"); \
fprintf (STREAM, "\t.word\t0x8fef0014\t\t# lw $15,20($31)\n"); \
} \
fprintf (STREAM, "\t.word\t0x00600008\t\t# jr $3\n"); \
fprintf (STREAM, "\t.word\t0x03200008\t\t# jr $25\n"); \
if (ptr_mode == DImode) \
{ \
fprintf (STREAM, "\t.word\t0x0020f82d\t\t# dmove $31,$1\n"); \
fprintf (STREAM, "\t.word\t0x00000000\t\t# <padding>\n"); \
fprintf (STREAM, "\t.dword\t0x00000000\t\t# <function address>\n"); \
fprintf (STREAM, "\t.dword\t0x00000000\t\t# <static chain value>\n"); \
} \
......@@ -2259,7 +2266,7 @@ typedef struct mips_args {
/* A C expression for the size in bytes of the trampoline, as an
integer. */
#define TRAMPOLINE_SIZE (32 + GET_MODE_SIZE (ptr_mode) * 2)
#define TRAMPOLINE_SIZE (ptr_mode == DImode ? 48 : 36)
/* Alignment required for trampolines, in bits. */
......@@ -2289,7 +2296,7 @@ typedef struct mips_args {
{ \
rtx func_addr, chain_addr, end_addr; \
\
func_addr = plus_constant (ADDR, 32); \
func_addr = plus_constant (ADDR, ptr_mode == DImode ? 32 : 28); \
chain_addr = plus_constant (func_addr, GET_MODE_SIZE (ptr_mode)); \
mips_emit_move (gen_rtx_MEM (ptr_mode, func_addr), FUNC); \
mips_emit_move (gen_rtx_MEM (ptr_mode, chain_addr), CHAIN); \
......
gcc/config/mips/sdemtk.h
......@@ -94,12 +94,20 @@ extern void mips_sync_icache (void *beg, unsigned long len);
#define FUNCTION_PROFILER(FILE, LABELNO) \
{ \
fprintf (FILE, "\t.set\tnoat\n"); \
/* _mcount treats $2 as the static chain register. */ \
if (cfun->static_chain_decl != NULL) \
fprintf (FILE, "\tmove\t%s,%s\n", reg_names[2], \
reg_names[STATIC_CHAIN_REGNUM]); \
/* MIPS16 code passes saved $ra in $v1 instead of $at. */ \
fprintf (FILE, "\tmove\t%s,%s\n", \
reg_names[GP_REG_FIRST + (TARGET_MIPS16 ? 3 : 1)], \
reg_names[GP_REG_FIRST + 31]); \
fprintf (FILE, "\tjal\t_mcount\n"); \
fprintf (FILE, "\t.set\tat\n"); \
/* _mcount treats $2 as the static chain register. */ \
if (cfun->static_chain_decl != NULL) \
fprintf (FILE, "\tmove\t%s,%s\n", reg_names[STATIC_CHAIN_REGNUM], \
reg_names[2]); \
}
/* ...nor does the call sequence preserve $31. */
......
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