From 56dc6ecb70e6fc76d32d6a7194acb273b76bfe0e Mon Sep 17 00:00:00 2001 From: David Guillen Fandos Date: Mon, 8 Mar 2021 18:44:03 +0100 Subject: Remove libco This removes libco and all the usages of it (+pthreads). Rewired all dynarecs and interpreter to return after every frame so that libretro can process events. This required to make dynarec re-entrant. Dynarecs were updated to check for new frame on every update (IRQ, cycle exhaustion, I/O write, etc). The performance impact of doing so should be minimal (and definitely outweight the libco gains). While at it, fixed small issues to get a bit more perf: arm dynarec was not idling correctly, mips was using stack when not needed, etc. Tested on PSP (mips), OGA (armv7), Linux (x86 and interpreter). Not tested on Android though. --- libco/aarch64.c | 123 ----------------- libco/amd64.c | 161 ---------------------- libco/armeabi.c | 95 ------------- libco/fiber.c | 58 -------- libco/libco.c | 27 ---- libco/ppc.c | 407 ------------------------------------------------------- libco/psp1.c | 45 ------ libco/psp2.c | 116 ---------------- libco/scefiber.c | 96 ------------- libco/sjlj.c | 115 ---------------- libco/ucontext.c | 81 ----------- libco/x86.c | 117 ---------------- 12 files changed, 1441 deletions(-) delete mode 100644 libco/aarch64.c delete mode 100644 libco/amd64.c delete mode 100644 libco/armeabi.c delete mode 100644 libco/fiber.c delete mode 100644 libco/libco.c delete mode 100644 libco/ppc.c delete mode 100644 libco/psp1.c delete mode 100644 libco/psp2.c delete mode 100644 libco/scefiber.c delete mode 100644 libco/sjlj.c delete mode 100644 libco/ucontext.c delete mode 100644 libco/x86.c (limited to 'libco') diff --git a/libco/aarch64.c b/libco/aarch64.c deleted file mode 100644 index 2eb9ac6..0000000 --- a/libco/aarch64.c +++ /dev/null @@ -1,123 +0,0 @@ -/* - libco.aarch64 (2017-06-26) - author: webgeek1234 - license: public domain -*/ - -#define LIBCO_C -#include "libco.h" -#include -#include -#include -#include - -#ifndef __APPLE__ -#include -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -static thread_local uint64_t co_active_buffer[64]; -static thread_local cothread_t co_active_handle; - -asm ( - ".globl co_switch_aarch64\n" - ".globl _co_switch_aarch64\n" - "co_switch_aarch64:\n" - "_co_switch_aarch64:\n" - " stp x8, x9, [x1]\n" - " stp x10, x11, [x1, #16]\n" - " stp x12, x13, [x1, #32]\n" - " stp x14, x15, [x1, #48]\n" - " str x19, [x1, #72]\n" - " stp x20, x21, [x1, #80]\n" - " stp x22, x23, [x1, #96]\n" - " stp x24, x25, [x1, #112]\n" - " stp x26, x27, [x1, #128]\n" - " stp x28, x29, [x1, #144]\n" - " mov x16, sp\n" - " stp x16, x30, [x1, #160]\n" - - " ldp x8, x9, [x0]\n" - " ldp x10, x11, [x0, #16]\n" - " ldp x12, x13, [x0, #32]\n" - " ldp x14, x15, [x0, #48]\n" - " ldr x19, [x0, #72]\n" - " ldp x20, x21, [x0, #80]\n" - " ldp x22, x23, [x0, #96]\n" - " ldp x24, x25, [x0, #112]\n" - " ldp x26, x27, [x0, #128]\n" - " ldp x28, x29, [x0, #144]\n" - " ldp x16, x17, [x0, #160]\n" - " mov sp, x16\n" - " br x17\n" - ); - -/* ASM */ -void co_switch_aarch64(cothread_t handle, cothread_t current); - -cothread_t co_create(unsigned int size, void (*entrypoint)(void)) -{ - size = (size + 1023) & ~1023; - cothread_t handle = 0; -#if HAVE_POSIX_MEMALIGN >= 1 - if (posix_memalign(&handle, 1024, size + 512) < 0) - return 0; -#else - handle = memalign(1024, size + 512); -#endif - - if (!handle) - return handle; - - uint64_t *ptr = (uint64_t*)handle; - /* Non-volatiles. */ - ptr[0] = 0; /* x8 */ - ptr[1] = 0; /* x9 */ - ptr[2] = 0; /* x10 */ - ptr[3] = 0; /* x11 */ - ptr[4] = 0; /* x12 */ - ptr[5] = 0; /* x13 */ - ptr[6] = 0; /* x14 */ - ptr[7] = 0; /* x15 */ - ptr[8] = 0; /* padding */ - ptr[9] = 0; /* x19 */ - ptr[10] = 0; /* x20 */ - ptr[11] = 0; /* x21 */ - ptr[12] = 0; /* x22 */ - ptr[13] = 0; /* x23 */ - ptr[14] = 0; /* x24 */ - ptr[15] = 0; /* x25 */ - ptr[16] = 0; /* x26 */ - ptr[17] = 0; /* x27 */ - ptr[18] = 0; /* x28 */ - ptr[20] = (uintptr_t)ptr + size + 512 - 16; /* x30, stack pointer */ - ptr[19] = ptr[20]; /* x29, frame pointer */ - ptr[21] = (uintptr_t)entrypoint; /* PC (link register x31 gets saved here). */ - return handle; -} - -cothread_t co_active(void) -{ - if (!co_active_handle) - co_active_handle = co_active_buffer; - return co_active_handle; -} - -void co_delete(cothread_t handle) -{ - free(handle); -} - -void co_switch(cothread_t handle) -{ - cothread_t co_previous_handle = co_active(); - co_switch_aarch64(co_active_handle = handle, co_previous_handle); -} - -#ifdef __cplusplus -} -#endif - 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 -#include -#include - -#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 - -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 -#include - -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 diff --git a/libco/armeabi.c b/libco/armeabi.c deleted file mode 100644 index c9b68d0..0000000 --- a/libco/armeabi.c +++ /dev/null @@ -1,95 +0,0 @@ -/* - libco.armeabi (2013-04-05) - author: Themaister - license: public domain -*/ - -#define LIBCO_C -#include -#include -#include -#include -#include - -#ifndef IOS -#include -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -static thread_local uint32_t co_active_buffer[64]; -static thread_local cothread_t co_active_handle; - -asm ( - ".arm\n" - ".align 4\n" - ".globl co_switch_arm\n" - ".globl _co_switch_arm\n" - "co_switch_arm:\n" - "_co_switch_arm:\n" - " stmia r1!, {r4, r5, r6, r7, r8, r9, r10, r11, sp, lr}\n" - " ldmia r0!, {r4, r5, r6, r7, r8, r9, r10, r11, sp, pc}\n" - ); - -/* ASM */ -void co_switch_arm(cothread_t handle, cothread_t current); - -static void crash(void) -{ - /* Called only if cothread_t entrypoint returns. */ - assert(0); -} - -cothread_t co_create(unsigned int size, void (*entrypoint)(void)) -{ - size = (size + 1023) & ~1023; - cothread_t handle = 0; -#if HAVE_POSIX_MEMALIGN >= 1 - if (posix_memalign(&handle, 1024, size + 256) < 0) - return 0; -#else - handle = memalign(1024, size + 256); -#endif - - if (!handle) - return handle; - - uint32_t *ptr = (uint32_t*)handle; - /* Non-volatiles. */ - ptr[0] = 0; /* r4 */ - ptr[1] = 0; /* r5 */ - ptr[2] = 0; /* r6 */ - ptr[3] = 0; /* r7 */ - ptr[4] = 0; /* r8 */ - ptr[5] = 0; /* r9 */ - ptr[6] = 0; /* r10 */ - ptr[7] = 0; /* r11 */ - ptr[8] = (uintptr_t)ptr + size + 256 - 4; /* r13, stack pointer */ - ptr[9] = (uintptr_t)entrypoint; /* r15, PC (link register r14 gets saved here). */ - return handle; -} - -cothread_t co_active(void) -{ - if (!co_active_handle) - co_active_handle = co_active_buffer; - return co_active_handle; -} - -void co_delete(cothread_t handle) -{ - free(handle); -} - -void co_switch(cothread_t handle) -{ - cothread_t co_previous_handle = co_active(); - co_switch_arm(co_active_handle = handle, co_previous_handle); -} - -#ifdef __cplusplus -} -#endif - diff --git a/libco/fiber.c b/libco/fiber.c deleted file mode 100644 index 90ba115..0000000 --- a/libco/fiber.c +++ /dev/null @@ -1,58 +0,0 @@ -/* - libco.win (2008-01-28) - authors: Nach, byuu - license: public domain -*/ - -#define LIBCO_C -#include -#define WINVER 0x0400 -#define _WIN32_WINNT 0x0400 -#define WIN32_LEAN_AND_MEAN -#include - -#ifdef __cplusplus -extern "C" { -#endif - -static thread_local cothread_t co_active_ = 0; - -static void __stdcall co_thunk(void *coentry) -{ - ((void (*)(void))coentry)(); -} - -cothread_t co_active(void) -{ - if(!co_active_) - { - ConvertThreadToFiber(0); - co_active_ = GetCurrentFiber(); - } - return co_active_; -} - -cothread_t co_create(unsigned int heapsize, void (*coentry)(void)) -{ - if(!co_active_) - { - ConvertThreadToFiber(0); - co_active_ = GetCurrentFiber(); - } - return (cothread_t)CreateFiber(heapsize, co_thunk, (void*)coentry); -} - -void co_delete(cothread_t cothread) -{ - DeleteFiber(cothread); -} - -void co_switch(cothread_t cothread) -{ - co_active_ = cothread; - SwitchToFiber(cothread); -} - -#ifdef __cplusplus -} -#endif diff --git a/libco/libco.c b/libco/libco.c deleted file mode 100644 index 95a04f5..0000000 --- a/libco/libco.c +++ /dev/null @@ -1,27 +0,0 @@ -/* - libco - auto-selection module - license: public domain -*/ - -#if defined(__GNUC__) && defined(__i386__) || (defined(_MSC_VER) && defined(_M_IX86)) - #include "x86.c" -#elif defined(__GNUC__) && defined(__amd64__) || (defined(_MSC_VER) && defined(_M_AMD64)) - #include "amd64.c" -#elif defined(__GNUC__) && defined(_ARCH_PPC) - #include "ppc.c" -#elif defined(VITA) - #include "scefiber.c" -#elif defined(PSP) - #include "psp1.c" -#elif defined(__GNUC__) && defined(__aarch64__) - #include "aarch64.c" -#elif defined(__GNUC__) && (defined(__ARM_EABI__) || defined(__arm__)) - #include "armeabi.c" -#elif defined(__GNUC__) - #include "sjlj.c" -#elif defined(_MSC_VER) - #include "fiber.c" -#else - #error "libco: unsupported processor, compiler or operating system" -#endif diff --git a/libco/ppc.c b/libco/ppc.c deleted file mode 100644 index f6cb536..0000000 --- a/libco/ppc.c +++ /dev/null @@ -1,407 +0,0 @@ -/* - libco.ppc (2010-10-17) - author: blargg - license: public domain -*/ - -/* PowerPC 32/64 using embedded or external asm, with optional -floating-point and AltiVec save/restore */ - -#define LIBCO_C -#include -#include -#include -#include - -#define LIBCO_MPROTECT (__unix__ && !LIBCO_PPC_ASM) - -#if LIBCO_MPROTECT - #include - #include -#endif - -/* State format (offsets in 32-bit words) - -+0 Pointer to swap code - Rest of function descriptor for entry function -+8 PC -+10 SP - Special regs - GPRs - FPRs - VRs - stack -*/ - -enum { state_size = 1024 }; -enum { above_stack = 2048 }; -enum { stack_align = 256 }; - -static thread_local cothread_t co_active_handle = 0; - -/**** Determine environment ****/ - -#define LIBCO_PPC64 (_ARCH_PPC64 || __PPC64__ || __ppc64__ || __powerpc64__) - -/* Whether function calls are indirect through a descriptor, -or are directly to function */ -#ifndef LIBCO_PPCDESC - #if !_CALL_SYSV && (_CALL_AIX || _CALL_AIXDESC || LIBCO_PPC64) - #define LIBCO_PPCDESC 1 - #endif -#endif - -#ifdef LIBCO_PPC_ASM - - #ifdef __cplusplus - extern "C" - #endif - - /* Swap code is in ppc.S */ - void co_swap_asm( cothread_t, cothread_t ); - #define CO_SWAP_ASM( x, y ) co_swap_asm( x, y ) - -#else - -/* Swap code is here in array. Please leave dieassembly comments, -as they make it easy to see what it does, and reorder instructions -if one wants to see whether that improves performance. */ -static const uint32_t libco_ppc_code [] = { -#if LIBCO_PPC64 - 0x7d000026, /* mfcr r8 */ - 0xf8240028, /* std r1,40(r4) */ - 0x7d2802a6, /* mflr r9 */ - 0xf9c40048, /* std r14,72(r4) */ - 0xf9e40050, /* std r15,80(r4) */ - 0xfa040058, /* std r16,88(r4) */ - 0xfa240060, /* std r17,96(r4) */ - 0xfa440068, /* std r18,104(r4) */ - 0xfa640070, /* std r19,112(r4) */ - 0xfa840078, /* std r20,120(r4) */ - 0xfaa40080, /* std r21,128(r4) */ - 0xfac40088, /* std r22,136(r4) */ - 0xfae40090, /* std r23,144(r4) */ - 0xfb040098, /* std r24,152(r4) */ - 0xfb2400a0, /* std r25,160(r4) */ - 0xfb4400a8, /* std r26,168(r4) */ - 0xfb6400b0, /* std r27,176(r4) */ - 0xfb8400b8, /* std r28,184(r4) */ - 0xfba400c0, /* std r29,192(r4) */ - 0xfbc400c8, /* std r30,200(r4) */ - 0xfbe400d0, /* std r31,208(r4) */ - 0xf9240020, /* std r9,32(r4) */ - 0xe8e30020, /* ld r7,32(r3) */ - 0xe8230028, /* ld r1,40(r3) */ - 0x48000009, /* bl 1 */ - 0x7fe00008, /* trap */ - 0x91040030,/*1:stw r8,48(r4) */ - 0x80c30030, /* lwz r6,48(r3) */ - 0x7ce903a6, /* mtctr r7 */ - 0xe9c30048, /* ld r14,72(r3) */ - 0xe9e30050, /* ld r15,80(r3) */ - 0xea030058, /* ld r16,88(r3) */ - 0xea230060, /* ld r17,96(r3) */ - 0xea430068, /* ld r18,104(r3) */ - 0xea630070, /* ld r19,112(r3) */ - 0xea830078, /* ld r20,120(r3) */ - 0xeaa30080, /* ld r21,128(r3) */ - 0xeac30088, /* ld r22,136(r3) */ - 0xeae30090, /* ld r23,144(r3) */ - 0xeb030098, /* ld r24,152(r3) */ - 0xeb2300a0, /* ld r25,160(r3) */ - 0xeb4300a8, /* ld r26,168(r3) */ - 0xeb6300b0, /* ld r27,176(r3) */ - 0xeb8300b8, /* ld r28,184(r3) */ - 0xeba300c0, /* ld r29,192(r3) */ - 0xebc300c8, /* ld r30,200(r3) */ - 0xebe300d0, /* ld r31,208(r3) */ - 0x7ccff120, /* mtcr r6 */ -#else - 0x7d000026, /* mfcr r8 */ - 0x90240028, /* stw r1,40(r4) */ - 0x7d2802a6, /* mflr r9 */ - 0x91a4003c, /* stw r13,60(r4) */ - 0x91c40040, /* stw r14,64(r4) */ - 0x91e40044, /* stw r15,68(r4) */ - 0x92040048, /* stw r16,72(r4) */ - 0x9224004c, /* stw r17,76(r4) */ - 0x92440050, /* stw r18,80(r4) */ - 0x92640054, /* stw r19,84(r4) */ - 0x92840058, /* stw r20,88(r4) */ - 0x92a4005c, /* stw r21,92(r4) */ - 0x92c40060, /* stw r22,96(r4) */ - 0x92e40064, /* stw r23,100(r4) */ - 0x93040068, /* stw r24,104(r4) */ - 0x9324006c, /* stw r25,108(r4) */ - 0x93440070, /* stw r26,112(r4) */ - 0x93640074, /* stw r27,116(r4) */ - 0x93840078, /* stw r28,120(r4) */ - 0x93a4007c, /* stw r29,124(r4) */ - 0x93c40080, /* stw r30,128(r4) */ - 0x93e40084, /* stw r31,132(r4) */ - 0x91240020, /* stw r9,32(r4) */ - 0x80e30020, /* lwz r7,32(r3) */ - 0x80230028, /* lwz r1,40(r3) */ - 0x48000009, /* bl 1 */ - 0x7fe00008, /* trap */ - 0x91040030,/*1:stw r8,48(r4) */ - 0x80c30030, /* lwz r6,48(r3) */ - 0x7ce903a6, /* mtctr r7 */ - 0x81a3003c, /* lwz r13,60(r3) */ - 0x81c30040, /* lwz r14,64(r3) */ - 0x81e30044, /* lwz r15,68(r3) */ - 0x82030048, /* lwz r16,72(r3) */ - 0x8223004c, /* lwz r17,76(r3) */ - 0x82430050, /* lwz r18,80(r3) */ - 0x82630054, /* lwz r19,84(r3) */ - 0x82830058, /* lwz r20,88(r3) */ - 0x82a3005c, /* lwz r21,92(r3) */ - 0x82c30060, /* lwz r22,96(r3) */ - 0x82e30064, /* lwz r23,100(r3) */ - 0x83030068, /* lwz r24,104(r3) */ - 0x8323006c, /* lwz r25,108(r3) */ - 0x83430070, /* lwz r26,112(r3) */ - 0x83630074, /* lwz r27,116(r3) */ - 0x83830078, /* lwz r28,120(r3) */ - 0x83a3007c, /* lwz r29,124(r3) */ - 0x83c30080, /* lwz r30,128(r3) */ - 0x83e30084, /* lwz r31,132(r3) */ - 0x7ccff120, /* mtcr r6 */ -#endif - -#ifndef LIBCO_PPC_NOFP - 0xd9c400e0, /* stfd f14,224(r4) */ - 0xd9e400e8, /* stfd f15,232(r4) */ - 0xda0400f0, /* stfd f16,240(r4) */ - 0xda2400f8, /* stfd f17,248(r4) */ - 0xda440100, /* stfd f18,256(r4) */ - 0xda640108, /* stfd f19,264(r4) */ - 0xda840110, /* stfd f20,272(r4) */ - 0xdaa40118, /* stfd f21,280(r4) */ - 0xdac40120, /* stfd f22,288(r4) */ - 0xdae40128, /* stfd f23,296(r4) */ - 0xdb040130, /* stfd f24,304(r4) */ - 0xdb240138, /* stfd f25,312(r4) */ - 0xdb440140, /* stfd f26,320(r4) */ - 0xdb640148, /* stfd f27,328(r4) */ - 0xdb840150, /* stfd f28,336(r4) */ - 0xdba40158, /* stfd f29,344(r4) */ - 0xdbc40160, /* stfd f30,352(r4) */ - 0xdbe40168, /* stfd f31,360(r4) */ - 0xc9c300e0, /* lfd f14,224(r3) */ - 0xc9e300e8, /* lfd f15,232(r3) */ - 0xca0300f0, /* lfd f16,240(r3) */ - 0xca2300f8, /* lfd f17,248(r3) */ - 0xca430100, /* lfd f18,256(r3) */ - 0xca630108, /* lfd f19,264(r3) */ - 0xca830110, /* lfd f20,272(r3) */ - 0xcaa30118, /* lfd f21,280(r3) */ - 0xcac30120, /* lfd f22,288(r3) */ - 0xcae30128, /* lfd f23,296(r3) */ - 0xcb030130, /* lfd f24,304(r3) */ - 0xcb230138, /* lfd f25,312(r3) */ - 0xcb430140, /* lfd f26,320(r3) */ - 0xcb630148, /* lfd f27,328(r3) */ - 0xcb830150, /* lfd f28,336(r3) */ - 0xcba30158, /* lfd f29,344(r3) */ - 0xcbc30160, /* lfd f30,352(r3) */ - 0xcbe30168, /* lfd f31,360(r3) */ -#endif - -#ifdef __ALTIVEC__ - 0x7ca042a6, /* mfvrsave r5 */ - 0x39040180, /* addi r8,r4,384 */ - 0x39240190, /* addi r9,r4,400 */ - 0x70a00fff, /* andi. r0,r5,4095 */ - 0x90a40034, /* stw r5,52(r4) */ - 0x4182005c, /* beq- 2 */ - 0x7e8041ce, /* stvx v20,r0,r8 */ - 0x39080020, /* addi r8,r8,32 */ - 0x7ea049ce, /* stvx v21,r0,r9 */ - 0x39290020, /* addi r9,r9,32 */ - 0x7ec041ce, /* stvx v22,r0,r8 */ - 0x39080020, /* addi r8,r8,32 */ - 0x7ee049ce, /* stvx v23,r0,r9 */ - 0x39290020, /* addi r9,r9,32 */ - 0x7f0041ce, /* stvx v24,r0,r8 */ - 0x39080020, /* addi r8,r8,32 */ - 0x7f2049ce, /* stvx v25,r0,r9 */ - 0x39290020, /* addi r9,r9,32 */ - 0x7f4041ce, /* stvx v26,r0,r8 */ - 0x39080020, /* addi r8,r8,32 */ - 0x7f6049ce, /* stvx v27,r0,r9 */ - 0x39290020, /* addi r9,r9,32 */ - 0x7f8041ce, /* stvx v28,r0,r8 */ - 0x39080020, /* addi r8,r8,32 */ - 0x7fa049ce, /* stvx v29,r0,r9 */ - 0x39290020, /* addi r9,r9,32 */ - 0x7fc041ce, /* stvx v30,r0,r8 */ - 0x7fe049ce, /* stvx v31,r0,r9 */ - 0x80a30034,/*2:lwz r5,52(r3) */ - 0x39030180, /* addi r8,r3,384 */ - 0x39230190, /* addi r9,r3,400 */ - 0x70a00fff, /* andi. r0,r5,4095 */ - 0x7ca043a6, /* mtvrsave r5 */ - 0x4d820420, /* beqctr */ - 0x7e8040ce, /* lvx v20,r0,r8 */ - 0x39080020, /* addi r8,r8,32 */ - 0x7ea048ce, /* lvx v21,r0,r9 */ - 0x39290020, /* addi r9,r9,32 */ - 0x7ec040ce, /* lvx v22,r0,r8 */ - 0x39080020, /* addi r8,r8,32 */ - 0x7ee048ce, /* lvx v23,r0,r9 */ - 0x39290020, /* addi r9,r9,32 */ - 0x7f0040ce, /* lvx v24,r0,r8 */ - 0x39080020, /* addi r8,r8,32 */ - 0x7f2048ce, /* lvx v25,r0,r9 */ - 0x39290020, /* addi r9,r9,32 */ - 0x7f4040ce, /* lvx v26,r0,r8 */ - 0x39080020, /* addi r8,r8,32 */ - 0x7f6048ce, /* lvx v27,r0,r9 */ - 0x39290020, /* addi r9,r9,32 */ - 0x7f8040ce, /* lvx v28,r0,r8 */ - 0x39080020, /* addi r8,r8,32 */ - 0x7fa048ce, /* lvx v29,r0,r9 */ - 0x39290020, /* addi r9,r9,32 */ - 0x7fc040ce, /* lvx v30,r0,r8 */ - 0x7fe048ce, /* lvx v31,r0,r9 */ -#endif - - 0x4e800420, /* bctr */ -}; - - #if LIBCO_PPCDESC - /* Function call goes through indirect descriptor */ - #define CO_SWAP_ASM( x, y ) \ - ((void (*)( cothread_t, cothread_t )) (uintptr_t) x)( x, y ) - #else - /* Function call goes directly to code */ - #define CO_SWAP_ASM( x, y ) \ - ((void (*)( cothread_t, cothread_t )) (uintptr_t) libco_ppc_code)( x, y ) - #endif - -#endif - -static uint32_t* co_create_( unsigned size, uintptr_t entry ) -{ - uint32_t* t = (uint32_t*) malloc( size ); - - (void) entry; - - #if LIBCO_PPCDESC - if ( t ) - { - /* Copy entry's descriptor */ - memcpy( t, (void*) entry, sizeof (void*) * 3 ); - - /* Set function pointer to swap routine */ - #ifdef LIBCO_PPC_ASM - *(const void**) t = *(void**) &co_swap_asm; - #else - *(const void**) t = libco_ppc_code; - #endif - } - #endif - - return t; -} - -cothread_t co_create( unsigned int size, void (*entry_)( void ) ) -{ - uintptr_t entry = (uintptr_t) entry_; - uint32_t* t = NULL; - - /* Be sure main thread was successfully allocated */ - if ( co_active() ) - { - size += state_size + above_stack + stack_align; - t = co_create_( size, entry ); - } - - if ( t ) - { - uintptr_t sp; - int shift; - - /* Save current registers into new thread, so that any special ones will - have proper values when thread is begun */ - CO_SWAP_ASM( t, t ); - - #if LIBCO_PPCDESC - /* Get real address */ - entry = (uintptr_t) *(void**) entry; - #endif - - /* Put stack near end of block, and align */ - sp = (uintptr_t) t + size - above_stack; - sp -= sp % stack_align; - - /* On PPC32, we save and restore GPRs as 32 bits. For PPC64, we - save and restore them as 64 bits, regardless of the size the ABI - uses. So, we manually write pointers at the proper size. We always - save and restore at the same address, and since PPC is big-endian, - we must put the low byte first on PPC32. */ - - /* If uintptr_t is 32 bits, >>32 is undefined behavior, so we do two shifts - and don't have to care how many bits uintptr_t is. */ - #if LIBCO_PPC64 - shift = 16; - #else - shift = 0; - #endif - - /* Set up so entry will be called on next swap */ - t [8] = (uint32_t) (entry >> shift >> shift); - t [9] = (uint32_t) entry; - - t [10] = (uint32_t) (sp >> shift >> shift); - t [11] = (uint32_t) sp; - } - - return t; -} - -void co_delete( cothread_t t ) -{ - free(t); -} - -static void co_init_( void ) -{ -#if LIBCO_MPROTECT - /* TODO: pre- and post-pad PPC code so that this doesn't make other - data executable and writable */ - long page_size = sysconf( _SC_PAGESIZE ); - if ( page_size > 0 ) - { - uintptr_t align = page_size; - uintptr_t begin = (uintptr_t) libco_ppc_code; - uintptr_t end = begin + sizeof libco_ppc_code; - - /* Align beginning and end */ - end += align - 1; - end -= end % align; - begin -= begin % align; - - mprotect( (void*) begin, end - begin, PROT_READ | PROT_WRITE | PROT_EXEC ); - } -#endif - - co_active_handle = co_create_( state_size, (uintptr_t) &co_switch ); -} - -cothread_t co_active(void) -{ - if (!co_active_handle) - co_init_(); - - return co_active_handle; -} - -void co_switch(cothread_t t) -{ - cothread_t old = co_active_handle; - co_active_handle = t; - - CO_SWAP_ASM( t, old ); -} diff --git a/libco/psp1.c b/libco/psp1.c deleted file mode 100644 index 90702ce..0000000 --- a/libco/psp1.c +++ /dev/null @@ -1,45 +0,0 @@ -#define LIBCO_C -#include "libco.h" - -#include -#include - -/* Since cothread_t is a void pointer it must contain an address. We can't return a reference to a local variable - * because it would go out of scope, so we create a static variable instead so we can return a reference to it. - */ -static SceUID active_thread_id = 0; - -cothread_t co_active() -{ - active_thread_id = sceKernelGetThreadId(); - return &active_thread_id; -} - -cothread_t co_create(unsigned int size, void (*entrypoint)(void)) -{ - /* Similar scenario as with active_thread_id except there will only be one active_thread_id while there could be many - * new threads each with their own handle, so we create them on the heap instead and delete them manually when they're - * no longer needed in co_delete(). - */ - cothread_t handle = malloc(sizeof(cothread_t)); - - /* SceKernelThreadEntry has a different signature than entrypoint, but in practice this seems to work */ - SceUID new_thread_id = sceKernelCreateThread("cothread", (SceKernelThreadEntry)entrypoint, 0x12, size, 0, NULL); - sceKernelStartThread(new_thread_id, 0, NULL); - - *(SceUID *)handle = new_thread_id; - return handle; -} - -void co_delete(cothread_t handle) -{ - sceKernelTerminateDeleteThread(*(SceUID *)handle); - free(handle); -} - -void co_switch(cothread_t handle) -{ - sceKernelWakeupThread(*(SceUID *)handle); - /* Sleep the currently active thread so the new thread can start */ - sceKernelSleepThread(); -} diff --git a/libco/psp2.c b/libco/psp2.c deleted file mode 100644 index 3ab1bc7..0000000 --- a/libco/psp2.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - libco.arm (2016-08-14) - author: frangarcj - license: public domain -*/ - -#define LIBCO_C -#include "libco.h" - -#include -#include -#include -#include -#include -#include -#ifdef __cplusplus -extern "C" { -#endif - -static inline int align(int x, int n) { - return (((x >> n) + 1) << n ); -} -#define FOUR_KB_ALIGN(x) align(x, 12) -#define MB_ALIGN(x) align(x, 20) - -static thread_local unsigned long co_active_buffer[64]; -static thread_local cothread_t co_active_handle = 0; -static void (*co_swap)(cothread_t, cothread_t) = 0; -static int block; -static uint32_t co_swap_function[] = { - 0xe8a16ff0, /* stmia r1!, {r4-r11,sp,lr} */ - 0xe8b0aff0, /* ldmia r0!, {r4-r11,sp,pc} */ - 0xe12fff1e, /* bx lr */ -}; - -void co_init() { - int ret; - void *base; - - block = sceKernelAllocMemBlockForVM("libco", MB_ALIGN(FOUR_KB_ALIGN(sizeof co_swap_function))); - if (block < 0) - { - return; - } - - // get base address - ret = sceKernelGetMemBlockBase(block, &base); - if (ret < 0) - { - return; - } - - // set domain to be writable by user - ret = sceKernelOpenVMDomain(); - if (ret < 0) - { - return; - } - - - memcpy(base,co_swap_function,sizeof co_swap_function); - - // set domain back to read-only - ret = sceKernelCloseVMDomain(); - if (ret < 0) - { - return; - } - - // flush icache - ret = sceKernelSyncVMDomain(block, base, MB_ALIGN(FOUR_KB_ALIGN(sizeof co_swap_function))); - if (ret < 0) - { - return; - } - - co_swap = (void (*)(cothread_t, cothread_t))base; - - -} - -cothread_t co_active() { - if(!co_active_handle) co_active_handle = &co_active_buffer; - return co_active_handle; -} - -cothread_t co_create(unsigned int size, void (*entrypoint)(void)) { - unsigned long* handle = 0; - if(!co_swap) { - co_init(); - } - if(!co_active_handle) co_active_handle = &co_active_buffer; - size += 256; - size &= ~15; - - if((handle = (unsigned long*)malloc(size))) { - unsigned long* p = (unsigned long*)((unsigned char*)handle + size); - handle[8] = (unsigned long)p; - handle[9] = (unsigned long)entrypoint; - } - - return handle; -} - -void co_delete(cothread_t handle) { - free(handle); -} - -void co_switch(cothread_t handle) { - cothread_t co_previous_handle = co_active_handle; - co_swap(co_active_handle = handle, co_previous_handle); -} - -#ifdef __cplusplus -} -#endif diff --git a/libco/scefiber.c b/libco/scefiber.c deleted file mode 100644 index a233bec..0000000 --- a/libco/scefiber.c +++ /dev/null @@ -1,96 +0,0 @@ -/* - libco.win (2016-09-06) - authors: frangarcj - license: public domain -*/ - -#define LIBCO_C -#include -#include -#include - -#ifdef __cplusplus -extern "C" { -#endif - -static thread_local cothread_t co_active_ = 0; - -typedef struct SceFiber { - char reserved[128]; -} SceFiber __attribute__( ( aligned ( 8 ) ) ) ; - -int32_t _sceFiberInitializeImpl(SceFiber* fiber, char* name, void* entry, uint32_t argOnInitialize, void* addrContext, int32_t sizeContext, void* params); - -int32_t sceFiberFinalize(SceFiber* fiber); - -int32_t sceFiberRun(SceFiber* fiber, uint32_t argOnRunTo, uint32_t* argOnRun); - -int32_t sceFiberSwitch(SceFiber* fiber, uint32_t argOnRunTo, uint32_t* argOnRun); - -int32_t sceFiberReturnToThread(uint32_t argOnReturn, uint32_t* argOnRun); - -void co_thunk(uint32_t argOnInitialize, uint32_t argOnRun) -{ - ((void (*)(void))argOnInitialize)(); -} - -cothread_t co_active(void) -{ - if(!co_active_) - { - sceSysmoduleLoadModule(SCE_SYSMODULE_FIBER); - co_active_ = (cothread_t)1; - } - return co_active_; -} - -cothread_t co_create(unsigned int heapsize, void (*coentry)(void)) -{ - SceFiber* tailFiber = malloc(sizeof(SceFiber)); - char * m_contextBuffer = malloc(sizeof(char)*heapsize); - if(!co_active_) - { - sceSysmoduleLoadModule(SCE_SYSMODULE_FIBER); - co_active_ = (cothread_t)1; - } - - //_sceFiberInitializeImpl - int ret = _sceFiberInitializeImpl(tailFiber, "tailFiber", co_thunk, (uint32_t)coentry, (void*) m_contextBuffer, heapsize, NULL); - if(ret==0){ - return (cothread_t)tailFiber; - }else{ - return (cothread_t)ret; - } - -} - -void co_delete(cothread_t cothread) -{ - if(cothread == (cothread_t)1){ - return; - } - sceFiberFinalize((SceFiber*)cothread); -} - -void co_switch(cothread_t cothread) -{ - - uint32_t argOnReturn = 0; - if(cothread == (cothread_t)1){ - co_active_ = cothread; - sceFiberReturnToThread(0, NULL); - }else{ - SceFiber* theFiber = (SceFiber*)cothread; - if(co_active_ == (cothread_t)1){ - co_active_ = cothread; - sceFiberRun(theFiber, 0, &argOnReturn); - }else{ - co_active_ = cothread; - sceFiberSwitch(theFiber, 0, &argOnReturn); - } - } -} - -#ifdef __cplusplus -} -#endif diff --git a/libco/sjlj.c b/libco/sjlj.c deleted file mode 100644 index f074714..0000000 --- a/libco/sjlj.c +++ /dev/null @@ -1,115 +0,0 @@ -/* - libco.sjlj (2008-01-28) - author: Nach - license: public domain -*/ - -/* - * Note this was designed for UNIX systems. Based on ideas expressed in a paper - * by Ralf Engelschall. - * For SJLJ on other systems, one would want to rewrite springboard() and - * co_create() and hack the jmb_buf stack pointer. - */ - -#define LIBCO_C -#include -#include -#include -#include - -#ifdef __cplusplus -extern "C" { -#endif - -typedef struct -{ - sigjmp_buf context; - void (*coentry)(void); - void *stack; -} cothread_struct; - -static thread_local cothread_struct co_primary; -static thread_local cothread_struct *creating, *co_running = 0; - -static void springboard(int ignored) -{ - if(sigsetjmp(creating->context, 0)) - co_running->coentry(); -} - -cothread_t co_active(void) -{ - if (!co_running) - co_running = &co_primary; - return (cothread_t)co_running; -} - -cothread_t co_create(unsigned int size, void (*coentry)(void)) -{ - if(!co_running) - co_running = &co_primary; - - cothread_struct *thread = (cothread_struct*)malloc(sizeof(cothread_struct)); - - if(thread) - { - struct sigaction handler; - struct sigaction old_handler; - - stack_t stack; - stack_t old_stack; - - thread->coentry = thread->stack = 0; - - stack.ss_flags = 0; - stack.ss_size = size; - thread->stack = stack.ss_sp = malloc(size); - - if(stack.ss_sp && !sigaltstack(&stack, &old_stack)) - { - handler.sa_handler = springboard; - handler.sa_flags = SA_ONSTACK; - sigemptyset(&handler.sa_mask); - creating = thread; - - if(!sigaction(SIGUSR1, &handler, &old_handler)) - { - if(!raise(SIGUSR1)) - thread->coentry = coentry; - sigaltstack(&old_stack, 0); - sigaction(SIGUSR1, &old_handler, 0); - } - } - - if(thread->coentry != coentry) - { - co_delete(thread); - thread = 0; - } - } - - return (cothread_t)thread; -} - -void co_delete(cothread_t cothread) -{ - if(cothread) - { - if(((cothread_struct*)cothread)->stack) - free(((cothread_struct*)cothread)->stack); - free(cothread); - } -} - -void co_switch(cothread_t cothread) -{ - if(!sigsetjmp(co_running->context, 0)) - { - co_running = (cothread_struct*)cothread; - siglongjmp(co_running->context, 1); - } -} - -#ifdef __cplusplus -} -#endif diff --git a/libco/ucontext.c b/libco/ucontext.c deleted file mode 100644 index 3e21816..0000000 --- a/libco/ucontext.c +++ /dev/null @@ -1,81 +0,0 @@ -/* - libco.ucontext (2008-01-28) - author: Nach - license: public domain -*/ - -/* - * WARNING: the overhead of POSIX ucontext is very high, - * assembly versions of libco or libco_sjlj should be much faster - * - * This library only exists for two reasons: - * 1 - as an initial test for the viability of a ucontext implementation - * 2 - to demonstrate the power and speed of libco over existing implementations, - * such as pth (which defaults to wrapping ucontext on unix targets) - * - * Use this library only as a *last resort* - */ - -#define LIBCO_C -#include -#include -#include - -#ifdef __cplusplus -extern "C" { -#endif - -static thread_local ucontext_t co_primary; -static thread_local ucontext_t *co_running = 0; - -cothread_t co_active(void) -{ - if (!co_running) - co_running = &co_primary; - return (cothread_t)co_running; -} - -cothread_t co_create(unsigned int heapsize, void (*coentry)(void)) -{ - if (!co_running) - co_running = &co_primary; - ucontext_t *thread = (ucontext_t*)malloc(sizeof(ucontext_t)); - - if(thread) - { - if((!getcontext(thread) && !(thread->uc_stack.ss_sp = 0)) && (thread->uc_stack.ss_sp = malloc(heapsize))) - { - thread->uc_link = co_running; - thread->uc_stack.ss_size = heapsize; - makecontext(thread, coentry, 0); - } - else - { - co_delete((cothread_t)thread); - thread = 0; - } - } - return (cothread_t)thread; -} - -void co_delete(cothread_t cothread) -{ - if (!cothread) - return; - - if(((ucontext_t*)cothread)->uc_stack.ss_sp) - free(((ucontext_t*)cothread)->uc_stack.ss_sp); - free(cothread); -} - -void co_switch(cothread_t cothread) -{ - ucontext_t *old_thread = co_running; - - co_running = (ucontext_t*)cothread; - swapcontext(old_thread, co_running); -} - -#ifdef __cplusplus -} -#endif diff --git a/libco/x86.c b/libco/x86.c deleted file mode 100644 index ae16766..0000000 --- a/libco/x86.c +++ /dev/null @@ -1,117 +0,0 @@ -/* - libco.x86 (2009-10-12) - author: byuu - license: public domain -*/ - -#define LIBCO_C -#include -#include -#include - -#ifdef __cplusplus -extern "C" { -#endif - -#if defined(_MSC_VER) - #define fastcall __fastcall -#elif defined(__GNUC__) - #define fastcall __attribute__((fastcall)) -#else - #error "libco: please define fastcall macro" -#endif - -static thread_local long co_active_buffer[64]; -static thread_local cothread_t co_active_handle = 0; -static void (fastcall *co_swap)(cothread_t, cothread_t) = 0; - -//ABI: fastcall -static unsigned char co_swap_function[] = { - 0x89, 0x22, /* mov [edx],esp */ - 0x8b, 0x21, /* mov esp,[ecx] */ - 0x58, /* pop eax */ - 0x89, 0x6a, 0x04, /* mov [edx+0x04],ebp */ - 0x89, 0x72, 0x08, /* mov [edx+0x08],esi */ - 0x89, 0x7a, 0x0c, /* mov [edx+0x0c],edi */ - 0x89, 0x5a, 0x10, /* mov [edx+0x10],ebx */ - 0x8b, 0x69, 0x04, /* mov ebp,[ecx+0x04] */ - 0x8b, 0x71, 0x08, /* mov esi,[ecx+0x08] */ - 0x8b, 0x79, 0x0c, /* mov edi,[ecx+0x0c] */ - 0x8b, 0x59, 0x10, /* mov ebx,[ecx+0x10] */ - 0xff, 0xe0, /* jmp eax */ -}; - -#ifdef _WIN32 -#include - -void co_init(void) -{ - DWORD old_privileges; - VirtualProtect(co_swap_function, - sizeof co_swap_function, PAGE_EXECUTE_READWRITE, &old_privileges); -} -#else -#include -#include - -void co_init(void) -{ - unsigned long addr = (unsigned long)co_swap_function; - unsigned long base = addr - (addr % sysconf(_SC_PAGESIZE)); - unsigned 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 (fastcall*)(cothread_t, cothread_t))co_swap_function; - } - - if(!co_active_handle) - co_active_handle = &co_active_buffer; - - size += 256; /* allocate additional space for storage */ - size &= ~15; /* align stack to 16-byte boundary */ - - if((handle = (cothread_t)malloc(size))) - { - long *p = (long*)((char*)handle + size); /* seek to top of stack */ - *--p = (long)crash; /* crash if entrypoint returns */ - *--p = (long)entrypoint; /* start of function */ - *(long*)handle = (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 -- cgit v1.2.3