diff options
Diffstat (limited to 'coroutine/win64/Context.h')
| -rw-r--r-- | coroutine/win64/Context.h | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/coroutine/win64/Context.h b/coroutine/win64/Context.h index 32d6e1038b..db003a2ee6 100644 --- a/coroutine/win64/Context.h +++ b/coroutine/win64/Context.h @@ -17,13 +17,16 @@ extern "C" { #define COROUTINE __declspec(noreturn) void const size_t COROUTINE_REGISTERS = 8; +const size_t COROUTINE_XMM_REGISTERS = 1+10*2; struct coroutine_context { void **stack_pointer; }; -typedef COROUTINE(* coroutine_start)(coroutine_context *from, coroutine_context *self); +typedef void(* coroutine_start)(coroutine_context *from, coroutine_context *self); + +void coroutine_trampoline(); static inline void coroutine_initialize( coroutine_context *context, @@ -31,7 +34,8 @@ static inline void coroutine_initialize( void *stack_pointer, size_t stack_size ) { - context->stack_pointer = (void**)stack_pointer; + /* Force 16-byte alignment */
+ context->stack_pointer = (void**)((uintptr_t)stack_pointer & ~0xF); if (!start) { assert(!context->stack_pointer); @@ -39,16 +43,22 @@ static inline void coroutine_initialize( return; } - /* Windows Thread Information Block */ - *--context->stack_pointer = 0; /* gs:[0x00] */ - *--context->stack_pointer = stack_pointer + stack_size; /* gs:[0x08] */ - *--context->stack_pointer = (void*)stack_pointer; /* gs:[0x10] */ - + /* Win64 ABI requires space for arguments */ + context->stack_pointer -= 4; + /* Return address */ + *--context->stack_pointer = 0; *--context->stack_pointer = (void*)start; + *--context->stack_pointer = (void*)coroutine_trampoline; + + /* Windows Thread Information Block */ + /* *--context->stack_pointer = 0; */ /* gs:[0x00] is not used */ + *--context->stack_pointer = (void*)stack_pointer; /* gs:[0x08] */ + *--context->stack_pointer = (void*)((char *)stack_pointer - stack_size); /* gs:[0x10] */ context->stack_pointer -= COROUTINE_REGISTERS; memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS); + memset(context->stack_pointer - COROUTINE_XMM_REGISTERS, 0, sizeof(void*) * COROUTINE_XMM_REGISTERS); } coroutine_context * coroutine_transfer(coroutine_context * current, coroutine_context * target); |