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Better (?) support for Windows TIB.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65867 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
samuel 2018-11-20 10:17:39 +00:00
parent 904af4aef2
commit d97c928067
4 changed files with 40 additions and 17 deletions
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22
coroutine/win32/Context.asm
View file

@ -14,28 +14,38 @@
; to touch these in order to pass them to the destination coroutine.
@coroutine_transfer@8 proc
; Save caller registers
; Save the thread information block:
push fs:[0]
push fs:[4]
push fs:[8]
; Save caller registers:
push ebp
push ebx
push edi
push esi
; Save caller stack pointer
; Save caller stack pointer:
mov dword ptr [ecx], esp
; Restore callee stack pointer
; Restore callee stack pointer:
mov esp, dword ptr [edx]
; Restore callee stack
; Restore callee stack:
pop esi
pop edi
pop ebx
pop ebp
; Save the first argument as the return value
; Restore the thread information block:
pop fs:[8]
pop fs:[4]
pop fs:[0]
; Save the first argument as the return value:
mov eax, dword ptr ecx
; Jump to the address on the stack
; Jump to the address on the stack:
ret
@coroutine_transfer@8 endp

7
coroutine/win32/Context.h
View file

@ -16,6 +16,7 @@ extern "C" {
#define COROUTINE __declspec(noreturn) void __fastcall
/* This doesn't include thread information block */
const size_t COROUTINE_REGISTERS = 4;
struct coroutine_context
@ -40,9 +41,9 @@ static inline void coroutine_initialize(
}
/* Windows Thread Information Block */
*--context->stack_pointer = 0;
*--context->stack_pointer = stack_pointer;
*--context->stack_pointer = (void*)stack_size;
*--context->stack_pointer = 0; /* fs:[0] */
*--context->stack_pointer = stack_pointer + stack_size; /* fs:[4] */
*--context->stack_pointer = (void*)stack_pointer; /* fs:[8] */
*--context->stack_pointer = (void*)start;

21
coroutine/win64/Context.asm
View file

@ -8,6 +8,12 @@
.code
coroutine_transfer proc
; Save the thread information block:
push gs:[0x00]
push gs:[0x08]
push gs:[0x10]
; Save caller registers:
push rbp
push rbx
push rdi
@ -17,13 +23,13 @@ coroutine_transfer proc
push r14
push r15
; Save caller stack pointer
; Save caller stack pointer:
mov [rcx], rsp
; Restore callee stack pointer
; Restore callee stack pointer:
mov rsp, [rdx]
; Restore callee stack
; Restore callee stack:
pop r15
pop r14
pop r13
@ -33,10 +39,15 @@ coroutine_transfer proc
pop rbx
pop rbp
; Put the first argument into the return value
; Restore the thread information block:
pop gs:[0x10]
pop gs:[0x08]
pop gs:[0x00]
; Put the first argument into the return value:
mov rax, rcx
; We pop the return address and jump to it
; We pop the return address and jump to it:
ret
coroutine_transfer endp

7
coroutine/win64/Context.h
View file

@ -40,9 +40,10 @@ static inline void coroutine_initialize(
}
/* Windows Thread Information Block */
*--context->stack_pointer = 0;
*--context->stack_pointer = stack_pointer;
*--context->stack_pointer = (void*)stack_size;
*--context->stack_pointer = 0; /* gs:[0x00] */
*--context->stack_pointer = stack_pointer + stack_size; /* gs:[0x08] */
*--context->stack_pointer = (void*)stack_pointer; /* gs:[0x10] */
*--context->stack_pointer = (void*)start;