diff options
Diffstat (limited to 'libco/amd64.c')
| -rw-r--r-- | libco/amd64.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/libco/amd64.c b/libco/amd64.c deleted file mode 100644 index a9f6ee5..0000000 --- a/libco/amd64.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - libco.amd64 (2009-10-12) - author: byuu - license: public domain -*/ - -#define LIBCO_C -#include <libco.h> -#include <assert.h> -#include <stdlib.h> - -#ifdef __cplusplus -extern "C" { -#endif - -static thread_local long long co_active_buffer[64]; -static thread_local cothread_t co_active_handle = 0; -static void (*co_swap)(cothread_t, cothread_t) = 0; - -#ifdef _WIN32 -//ABI: Win64 -static unsigned char co_swap_function[] = { - 0x48, 0x89, 0x22, /* mov [rdx],rsp */ - 0x48, 0x8b, 0x21, /* mov rsp,[rcx] */ - 0x58, /* pop rax */ - 0x48, 0x89, 0x6a, 0x08, /* mov [rdx+0x8],rbp */ - 0x48, 0x89, 0x72, 0x10, /* mov [rdx+0x10],rsi */ - 0x48, 0x89, 0x7a, 0x18, /* mov [rdx+0x18],rdi */ - 0x48, 0x89, 0x5a, 0x20, /* mov [rdx+0x20],rbx */ - 0x4c, 0x89, 0x62, 0x28, /* mov [rdx+0x28],r12 */ - 0x4c, 0x89, 0x6a, 0x30, /* mov [rdx+0x30],r13 */ - 0x4c, 0x89, 0x72, 0x38, /* mov [rdx+0x38],r14 */ - 0x4c, 0x89, 0x7a, 0x40, /* mov [rdx+0x40],r15 */ - 0x48, 0x81, 0xc2, 0x80, 0x00, 0x00, 0x00, /* add rdx,0x80 */ - 0x48, 0x83, 0xe2, 0xf0, /* and rdx,-0x10 */ - 0x0f, 0x29, 0x32, /* movaps [rdx],xmm6 */ - 0x0f, 0x29, 0x7a, 0x10, /* movaps [rdx+0x10],xmm7 */ - 0x44, 0x0f, 0x29, 0x42, 0x20, /* movaps [rdx+0x20],xmm8 */ - 0x44, 0x0f, 0x29, 0x4a, 0x30, /* movaps [rdx+0x30],xmm9 */ - 0x44, 0x0f, 0x29, 0x52, 0x40, /* movaps [rdx+0x40],xmm10 */ - 0x44, 0x0f, 0x29, 0x5a, 0x50, /* movaps [rdx+0x50],xmm11 */ - 0x44, 0x0f, 0x29, 0x62, 0x60, /* movaps [rdx+0x60],xmm12 */ - 0x44, 0x0f, 0x29, 0x6a, 0x70, /* movaps [rdx+0x70],xmm13 */ - 0x44, 0x0f, 0x29, 0xb2, 0x80, 0x00, 0x00, 0x00, /* movaps [rdx+0x80],xmm14 */ - 0x44, 0x0f, 0x29, 0xba, 0x90, 0x00, 0x00, 0x00, /* movaps [rdx+0x90],xmm15 */ - 0x48, 0x8b, 0x69, 0x08, /* mov rbp,[rcx+0x8] */ - 0x48, 0x8b, 0x71, 0x10, /* mov rsi,[rcx+0x10] */ - 0x48, 0x8b, 0x79, 0x18, /* mov rdi,[rcx+0x18] */ - 0x48, 0x8b, 0x59, 0x20, /* mov rbx,[rcx+0x20] */ - 0x4c, 0x8b, 0x61, 0x28, /* mov r12,[rcx+0x28] */ - 0x4c, 0x8b, 0x69, 0x30, /* mov r13,[rcx+0x30] */ - 0x4c, 0x8b, 0x71, 0x38, /* mov r14,[rcx+0x38] */ - 0x4c, 0x8b, 0x79, 0x40, /* mov r15,[rcx+0x40] */ - 0x48, 0x81, 0xc1, 0x80, 0x00, 0x00, 0x00, /* add rcx,0x80 */ - 0x48, 0x83, 0xe1, 0xf0, /* and rcx,-0x10 */ - 0x0f, 0x29, 0x31, /* movaps [rcx],xmm6 */ - 0x0f, 0x29, 0x79, 0x10, /* movaps [rcx+0x10],xmm7 */ - 0x44, 0x0f, 0x29, 0x41, 0x20, /* movaps [rcx+0x20],xmm8 */ - 0x44, 0x0f, 0x29, 0x49, 0x30, /* movaps [rcx+0x30],xmm9 */ - 0x44, 0x0f, 0x29, 0x51, 0x40, /* movaps [rcx+0x40],xmm10 */ - 0x44, 0x0f, 0x29, 0x59, 0x50, /* movaps [rcx+0x50],xmm11 */ - 0x44, 0x0f, 0x29, 0x61, 0x60, /* movaps [rcx+0x60],xmm12 */ - 0x44, 0x0f, 0x29, 0x69, 0x70, /* movaps [rcx+0x70],xmm13 */ - 0x44, 0x0f, 0x29, 0xb1, 0x80, 0x00, 0x00, 0x00, /* movaps [rcx+0x80],xmm14 */ - 0x44, 0x0f, 0x29, 0xb9, 0x90, 0x00, 0x00, 0x00, /* movaps [rcx+0x90],xmm15 */ - 0xff, 0xe0, /* jmp rax */ -}; - -#include <windows.h> - -void co_init(void) -{ - DWORD old_privileges; - VirtualProtect(co_swap_function, - sizeof(co_swap_function), PAGE_EXECUTE_READWRITE, &old_privileges); -} -#else -//ABI: SystemV -static unsigned char co_swap_function[] = { - 0x48, 0x89, 0x26, /* mov [rsi],rsp */ - 0x48, 0x8b, 0x27, /* mov rsp,[rdi] */ - 0x58, /* pop rax */ - 0x48, 0x89, 0x6e, 0x08, /* mov [rsi+0x08],rbp */ - 0x48, 0x89, 0x5e, 0x10, /* mov [rsi+0x10],rbx */ - 0x4c, 0x89, 0x66, 0x18, /* mov [rsi+0x18],r12 */ - 0x4c, 0x89, 0x6e, 0x20, /* mov [rsi+0x20],r13 */ - 0x4c, 0x89, 0x76, 0x28, /* mov [rsi+0x28],r14 */ - 0x4c, 0x89, 0x7e, 0x30, /* mov [rsi+0x30],r15 */ - 0x48, 0x8b, 0x6f, 0x08, /* mov rbp,[rdi+0x08] */ - 0x48, 0x8b, 0x5f, 0x10, /* mov rbx,[rdi+0x10] */ - 0x4c, 0x8b, 0x67, 0x18, /* mov r12,[rdi+0x18] */ - 0x4c, 0x8b, 0x6f, 0x20, /* mov r13,[rdi+0x20] */ - 0x4c, 0x8b, 0x77, 0x28, /* mov r14,[rdi+0x28] */ - 0x4c, 0x8b, 0x7f, 0x30, /* mov r15,[rdi+0x30] */ - 0xff, 0xe0, /* jmp rax */ -}; - -#include <unistd.h> -#include <sys/mman.h> - -void co_init(void) -{ - unsigned long long addr = (unsigned long long)co_swap_function; - unsigned long long base = addr - (addr % sysconf(_SC_PAGESIZE)); - unsigned long long size = (addr - base) + sizeof(co_swap_function); - mprotect((void*)base, size, PROT_READ | PROT_WRITE | PROT_EXEC); -} -#endif - -static void crash(void) -{ - assert(0); /* called only if cothread_t entrypoint returns */ -} - -cothread_t co_active(void) -{ - if (!co_active_handle) - co_active_handle = &co_active_buffer; - return co_active_handle; -} - -cothread_t co_create(unsigned int size, void (*entrypoint)(void)) -{ - cothread_t handle; - - if(!co_swap) - { - co_init(); - co_swap = (void (*)(cothread_t, cothread_t))co_swap_function; - } - - if (!co_active_handle) - co_active_handle = &co_active_buffer; - size += 512; /* allocate additional space for storage */ - size &= ~15; /* align stack to 16-byte boundary */ - - if((handle = (cothread_t)malloc(size))) - { - long long *p = (long long*)((char*)handle + size); /* seek to top of stack */ - *--p = (long long)crash; /* crash if entrypoint returns */ - *--p = (long long)entrypoint; /* start of function */ - *(long long*)handle = (long long)p; /* stack pointer */ - } - - return handle; -} - -void co_delete(cothread_t handle) -{ - free(handle); -} - -void co_switch(cothread_t handle) -{ - register cothread_t co_previous_handle = co_active_handle; - co_swap(co_active_handle = handle, co_previous_handle); -} - -#ifdef __cplusplus -} -#endif |