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| author | Stefan Weil <sw@weilnetz.de> | 2012-09-13 19:37:45 +0200 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2012-09-22 16:52:37 +0200 |
| commit | d73685e3c3936fd7851a32eff5443405cb5368be (patch) | |
| tree | 498d837fd59471c535d58f2ed39b383f688c0dc8 | |
| parent | b18212c66870f119111e0777fcc19462ae07eb70 (diff) | |
| download | qemu-d73685e3c3936fd7851a32eff5443405cb5368be.zip qemu-d73685e3c3936fd7851a32eff5443405cb5368be.tar.gz qemu-d73685e3c3936fd7851a32eff5443405cb5368be.tar.bz2 | |
tcg/i386: Remove unused registers from tcg_target_call_iarg_regs
32 bit x86 hosts don't need registers for helper function arguments
because they use the default stack based calling convention.
Removing the registers allows simpler code for function
tcg_target_get_call_iarg_regs_count.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
| -rw-r--r-- | tcg/i386/tcg-target.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c index a87c8ba..43c9719 100644 --- a/tcg/i386/tcg-target.c +++ b/tcg/i386/tcg-target.c @@ -75,9 +75,7 @@ static const int tcg_target_call_iarg_regs[] = { TCG_REG_R8, TCG_REG_R9, #else - TCG_REG_EAX, - TCG_REG_EDX, - TCG_REG_ECX + /* 32 bit mode uses stack based calling convention (GCC default). */ #endif }; @@ -129,11 +127,7 @@ static void patch_reloc(uint8_t *code_ptr, int type, /* maximum number of register used for input function arguments */ static inline int tcg_target_get_call_iarg_regs_count(int flags) { - if (TCG_TARGET_REG_BITS == 64) { - return ARRAY_SIZE(tcg_target_call_iarg_regs); - } - - return 0; + return ARRAY_SIZE(tcg_target_call_iarg_regs); } /* parse target specific constraints */ |