diff options
Diffstat (limited to 'tcg/arm')
| -rw-r--r-- | tcg/arm/tcg-target.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c index fb858d8634..457ad7edf8 100644 --- a/tcg/arm/tcg-target.c +++ b/tcg/arm/tcg-target.c @@ -1846,15 +1846,18 @@ static inline void tcg_out_movi(TCGContext *s, TCGType type, static void tcg_target_qemu_prologue(TCGContext *s) { - /* There is no need to save r7, it is used to store the address - of the env structure and is not modified by GCC. */ + /* Calling convention requires us to save r4-r11 and lr; + * save also r12 to maintain stack 8-alignment. + */ + + /* 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_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); - tcg_out_bx(s, COND_AL, TCG_REG_R0); + tcg_out_bx(s, COND_AL, tcg_target_call_iarg_regs[1]); tb_ret_addr = s->code_ptr; - /* ldmia sp!, { r4 - r6, r8 - r11, pc } */ - tcg_out32(s, (COND_AL << 28) | 0x08bd8f70); + /* ldmia sp!, { r4 - r12, pc } */ + tcg_out32(s, (COND_AL << 28) | 0x08bd9ff0); } |