diff options
| author | Michael Pavone <pavone@retrodev.com> | 2015-06-27 11:39:55 -0700 |
|---|---|---|
| committer | Michael Pavone <pavone@retrodev.com> | 2015-06-27 11:39:55 -0700 |
| commit | 0ce892b31ad6767fc1658d47418b9f7d14faab05 (patch) | |
| tree | bc45775f9a02d81e14cdbf1195ef64732e1d4473 /gen_x86.c | |
| parent | 4802e603569557fbc0e8086703d562ffa52236c7 (diff) | |
Handle far calls in call_args and call_args_abi
Diffstat (limited to 'gen_x86.c')
| -rw-r--r-- | gen_x86.c | 27 |
1 files changed, 24 insertions, 3 deletions
@@ -2003,6 +2003,27 @@ void call(code_info *code, code_ptr fun) code->cur = out; } +void call_raxfallback(code_info *code, code_ptr fun) +{ + check_alloc_code(code, 5); + code_ptr out = code->cur; + ptrdiff_t disp = fun-(out+5); + if (disp <= 0x7FFFFFFF && disp >= -2147483648) { + *(out++) = OP_CALL; + *(out++) = disp; + disp >>= 8; + *(out++) = disp; + disp >>= 8; + *(out++) = disp; + disp >>= 8; + *(out++) = disp; + } else { + mov_ir(code, fun, RAX, SZ_PTR); + call_r(code, RAX); + } + code->cur = out; +} + void call_r(code_info *code, uint8_t dst) { check_alloc_code(code, 2); @@ -2091,7 +2112,7 @@ void call_args(code_info *code, code_ptr fun, uint32_t num_args, ...) va_start(args, num_args); uint32_t adjust = prep_args(code, num_args, args); va_end(args); - call(code, fun); + call_raxfallback(code, fun); if (adjust) { add_ir(code, adjust, RSP, SZ_PTR); } @@ -2108,7 +2129,7 @@ void call_args_abi(code_info *code, code_ptr fun, uint32_t num_args, ...) code_ptr do_adjust_rsp = code->cur + 1; jcc(code, CC_NZ, code->cur + 2); #endif - call(code, fun); + call_raxfallback(code, fun); if (adjust) { add_ir(code, adjust, RSP, SZ_PTR); } @@ -2117,7 +2138,7 @@ void call_args_abi(code_info *code, code_ptr fun, uint32_t num_args, ...) jmp(code, code->cur + 2); *do_adjust_rsp = code->cur - (do_adjust_rsp+1); sub_ir(code, 8, RSP, SZ_PTR); - call(code, fun); + call_raxfallback(code, fun); add_ir(code, adjust + 8 , RSP, SZ_PTR); *no_adjust_rsp = code->cur - (no_adjust_rsp+1); #endif |