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| author | Aurelien Jarno <aurelien@aurel32.net> | 2010-03-20 12:27:42 +0100 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2010-03-20 12:27:42 +0100 |
| commit | 9e97d8e9418ddd8f26a2aa4dbb80853d3e8af392 (patch) | |
| tree | 64e9cb2039d6a0c041592b7abc96c7973df268cf /tcg/arm | |
| parent | 26c5d372e4848cbe85bcda10a4c5e98ad3aa051a (diff) | |
| download | qemu-9e97d8e9418ddd8f26a2aa4dbb80853d3e8af392.tar.gz qemu-9e97d8e9418ddd8f26a2aa4dbb80853d3e8af392.tar.bz2 qemu-9e97d8e9418ddd8f26a2aa4dbb80853d3e8af392.zip | |
tcg/arm: don't save/restore r7 in prologue/epilogue
There is no need to save r7, it is used to store the address
of the env structure and is not modified by GCC.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'tcg/arm')
| -rw-r--r-- | tcg/arm/tcg-target.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c index b50bb762a6..1d8debe153 100644 --- a/tcg/arm/tcg-target.c +++ b/tcg/arm/tcg-target.c @@ -1676,15 +1676,15 @@ static inline void tcg_out_movi(TCGContext *s, TCGType type, void tcg_target_qemu_prologue(TCGContext *s) { - /* Theoretically there is no need to save r12, but an - even number of registers to be saved as per EABI */ + /* There is no need to save r7, it is used to store the address + of the env structure and is not modified by GCC. */ - /* stmdb sp!, { r4 - r12, lr } */ - tcg_out32(s, (COND_AL << 28) | 0x092d5ff0); + /* stmdb sp!, { r4 - r6, r8 - r11, lr } */ + tcg_out32(s, (COND_AL << 28) | 0x092d4f70); tcg_out_bx(s, COND_AL, TCG_REG_R0); tb_ret_addr = s->code_ptr; - /* ldmia sp!, { r4 - r12, pc } */ - tcg_out32(s, (COND_AL << 28) | 0x08bd9ff0); + /* ldmia sp!, { r4 - r6, r8 - r11, pc } */ + tcg_out32(s, (COND_AL << 28) | 0x08bd8f70); } |