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Diffstat (limited to 'examples/coroutines/acoyield.S')
| -rw-r--r-- | examples/coroutines/acoyield.S | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/examples/coroutines/acoyield.S b/examples/coroutines/acoyield.S deleted file mode 100644 index 7bc87ff1..00000000 --- a/examples/coroutines/acoyield.S +++ /dev/null @@ -1,208 +0,0 @@ -.text -.globl aco_yield_asm -#if defined(__APPLE__) -#else -.type aco_yield_asm, @function -#endif -.intel_syntax noprefix -aco_yield_asm: -/* - extern void aco_yield_asm(aco_t* from_co, aco_t* to_co); - - struct aco_t { - void* reg[X]; - // ... - } - - reference: - https://github.com/hjl-tools/x86-psABI/wiki/X86-psABI - - pitfall: - http://man7.org/linux/man-pages/man7/signal.7.html - http://man7.org/linux/man-pages/man2/sigaltstack.2.html - - > $ man 7 signal - > ... - > By default, the signal handler is invoked on the normal process - > stack. It is possible to arrange that the signal handler - > uses an alternate stack; see sigaltstack(2) for a discussion of - > how to do this and when it might be useful. - > ... - - This is a BUG example: - https://github.com/Tencent/libco/blob/v1.0/coctx_swap.S#L27 - - proof of correctness: - https://github.com/hnes/libaco - - mxcsr & fpu: - fnstcw * m2byte - Store FPU control word to m2byte without checking for - pending unmasked floating-point exceptions. - - fldcw m2byte - Load FPU control word from m2byte. - - stmxcsr m32 - Store contents of MXCSR register to m32 - - ldmxcsr m32 - Load MXCSR register from m32. -*/ -/* - 0x00 --> 0xff - eip esp ebp edi esi ebx fpucw16 mxcsr32 - 0 4 8 c 10 14 18 1c -*/ -#ifdef __i386__ - mov eax,DWORD PTR [esp+0x4] // from_co - mov edx,DWORD PTR [esp] // retaddr - lea ecx,[esp+0x4] // esp - mov DWORD PTR [eax+0x8],ebp //<ebp - mov DWORD PTR [eax+0x4],ecx //<esp - mov DWORD PTR [eax+0x0],edx //<retaddr - mov DWORD PTR [eax+0xc],edi //<edi - mov ecx,DWORD PTR [esp+0x8] // to_co - mov DWORD PTR [eax+0x10],esi //<esi - mov DWORD PTR [eax+0x14],ebx //<ebx -#ifndef ACO_CONFIG_SHARE_FPU_MXCSR_ENV - fnstcw WORD PTR [eax+0x18] //<fpucw - stmxcsr DWORD PTR [eax+0x1c] //<mxcsr -#endif - mov edx,DWORD PTR [ecx+0x4] //>esp - mov ebp,DWORD PTR [ecx+0x8] //>ebp - mov eax,DWORD PTR [ecx+0x0] //>retaddr - mov edi,DWORD PTR [ecx+0xc] //>edi - mov esi,DWORD PTR [ecx+0x10] //>esi - mov ebx,DWORD PTR [ecx+0x14] //>ebx -#ifndef ACO_CONFIG_SHARE_FPU_MXCSR_ENV - fldcw WORD PTR [ecx+0x18] //>fpucw - ldmxcsr DWORD PTR [ecx+0x1c] //>mxcsr -#endif - xor ecx,ecx - mov esp,edx - mov edx,eax - - // Pass the user-provided argument as first argument: -#ifdef ACO_CONFIG_SHARE_FPU_MXCSR_ENV - mov eax,DWORD PTR [ecx+0x24] -#else - mov eax,DWORD PTR [ecx+0x28] -#endif - - jmp edx -#elif __x86_64__ -/* - 0x00 --> 0xff - r12 r13 r14 r15 rip rsp rbx rbp fpucw16 mxcsr32 - 0 8 10 18 20 28 30 38 40 44 -*/ - // rdi - from_co | rsi - to_co - mov rdx,QWORD PTR [rsp] // retaddr - lea rcx,[rsp+0x8] // rsp - mov QWORD PTR [rdi+0x0], r12 - mov QWORD PTR [rdi+0x8], r13 - mov QWORD PTR [rdi+0x10],r14 - mov QWORD PTR [rdi+0x18],r15 - mov QWORD PTR [rdi+0x20],rdx // retaddr - mov QWORD PTR [rdi+0x28],rcx // rsp - mov QWORD PTR [rdi+0x30],rbx - mov QWORD PTR [rdi+0x38],rbp -#ifndef ACO_CONFIG_SHARE_FPU_MXCSR_ENV - fnstcw WORD PTR [rdi+0x40] - stmxcsr DWORD PTR [rdi+0x44] -#endif - mov r12,QWORD PTR [rsi+0x0] - mov r13,QWORD PTR [rsi+0x8] - mov r14,QWORD PTR [rsi+0x10] - mov r15,QWORD PTR [rsi+0x18] - mov rax,QWORD PTR [rsi+0x20] // retaddr - mov rcx,QWORD PTR [rsi+0x28] // rsp - mov rbx,QWORD PTR [rsi+0x30] - mov rbp,QWORD PTR [rsi+0x38] -#ifndef ACO_CONFIG_SHARE_FPU_MXCSR_ENV - fldcw WORD PTR [rsi+0x40] - ldmxcsr DWORD PTR [rsi+0x44] -#endif - - // Pass the user-provided argument as first argument: -#ifdef ACO_CONFIG_SHARE_FPU_MXCSR_ENV - mov rdi,QWORD PTR [rsi+0x48] -#else - mov rdi,QWORD PTR [rsi+0x50] -#endif - - mov rsp,rcx - jmp rax -#else - #error "platform not supported" -#endif - -.globl aco_save_fpucw_mxcsr -#if defined(__APPLE__) -#else -.type aco_save_fpucw_mxcsr, @function -#endif -.intel_syntax noprefix -aco_save_fpucw_mxcsr: -#ifdef __i386__ - mov eax,DWORD PTR [esp+0x4] // ptr - fnstcw WORD PTR [eax] - stmxcsr DWORD PTR [eax+0x4] - ret -#elif __x86_64__ - fnstcw WORD PTR [rdi] - stmxcsr DWORD PTR [rdi+0x4] - ret -#else - #error "platform not supported" -#endif - -#if defined(__APPLE__) -.globl _abort -.globl _aco_funcp_protector -#else -.globl abort -.globl aco_funcp_protector -#endif - -.globl aco_funcp_protector_asm -#if defined(__APPLE__) -#else -.type aco_funcp_protector_asm, @function -#endif -.intel_syntax noprefix -aco_funcp_protector_asm: -#ifdef __i386__ - and esp,0xfffffff0 - #if defined(__APPLE__) - call _aco_funcp_protector - call _abort - #else - #if defined(__pic__) || defined(__PIC__) - call aco_funcp_protector@PLT - call abort@PLT - #else - call aco_funcp_protector - call abort - #endif - #endif - ret -#elif __x86_64__ - and rsp,0xfffffffffffffff0 - #if defined(__APPLE__) - call _aco_funcp_protector - call _abort - #else - #if defined(__pic__) || defined(__PIC__) - call aco_funcp_protector@PLT - call abort@PLT - #else - call aco_funcp_protector - call abort - #endif - #endif - ret -#else - #error "platform not supported" -#endif |