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| author | Damien George <damien.p.george@gmail.com> | 2014-09-06 23:24:32 +0000 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2014-09-06 23:24:32 +0000 |
| commit | 25d904105c61ba09de8460c0bf031c77b3faf51f (patch) | |
| tree | 1b720285e81a26960f71f864a0646d21de0dec3b /py/asmx86.c | |
| parent | 91fe0d4880b2abde25050d2b626320003f130e83 (diff) | |
| download | micropython-25d904105c61ba09de8460c0bf031c77b3faf51f.tar.gz micropython-25d904105c61ba09de8460c0bf031c77b3faf51f.zip | |
py: Adjust regs for x86 so that 1 more local can live in a reg.
Diffstat (limited to 'py/asmx86.c')
| -rw-r--r-- | py/asmx86.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/py/asmx86.c b/py/asmx86.c index 70d2bfe79d..1946973bad 100644 --- a/py/asmx86.c +++ b/py/asmx86.c @@ -413,7 +413,9 @@ void asm_x86_jcc_label(asm_x86_t *as, mp_uint_t jcc_type, mp_uint_t label) { void asm_x86_entry(asm_x86_t *as, mp_uint_t num_locals) { asm_x86_push_r32(as, REG_EBP); asm_x86_mov_r32_to_r32(as, REG_ESP, REG_EBP); - asm_x86_sub_i32_from_r32(as, num_locals * WORD_SIZE, REG_ESP); + if (num_locals > 0) { + asm_x86_sub_i32_from_r32(as, num_locals * WORD_SIZE, REG_ESP); + } asm_x86_push_r32(as, REG_EBX); asm_x86_push_r32(as, REG_ESI); asm_x86_push_r32(as, REG_EDI); |