mirror of
https://github.com/bsnes-emu/bsnes.git
synced 2025-04-02 10:42:14 -04:00
81f43a4d01
This represents a major code restructuring. The dot-based and scanline-based renderers are now split into two separate core libraries, asnes and bsnes. For now at least, these are -internal- names. I'm not entirely decided on how I'm going to handle releasing these two separate builds. Regardless, the folders need names. asnes has had all of the processor subfolders collapsed back into their parent folders. In other words, ppu's functions were moved into ppu/sppu, and then ppu was deleted, and then ppu/sppu became the new ppu. Repeat this for the cpu, smp and dsp and there you go. asnes/dsp also removed the DSP_STATE_MACHINE option. This was done for the sake of consistency with the rest of the core. asnes' debugger mode is currently extremely broken, but I will be fixing it in time. And for now, bsnes has kept the processor abstraction layer. I may keep it around, not sure yet. It doesn't hurt speed or anything, so I'm not too worried about making a decision right away. I may throw snesfilter, snesreader and supergameboy into this folder, just to have everything in one place. The alternate GUI forks are definitely going in there as dotnet, cocoa and python. Compiled output goes to the out/ folder now, to prevent conflicts with a file and folder named bsnes, for instance.
104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
/*
|
|
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, 0x48, 0x8B, 0x21, 0x58, 0x48, 0x89, 0x6A, 0x08, 0x48, 0x89, 0x72, 0x10, 0x48,
|
|
0x89, 0x7A, 0x18, 0x48, 0x89, 0x5A, 0x20, 0x4C, 0x89, 0x62, 0x28, 0x4C, 0x89, 0x6A, 0x30, 0x4C,
|
|
0x89, 0x72, 0x38, 0x4C, 0x89, 0x7A, 0x40, 0x48, 0x81, 0xC2, 0x80, 0x00, 0x00, 0x00, 0x48, 0x83,
|
|
0xE2, 0xF0, 0x0F, 0x29, 0x32, 0x0F, 0x29, 0x7A, 0x10, 0x44, 0x0F, 0x29, 0x42, 0x20, 0x44, 0x0F,
|
|
0x29, 0x4A, 0x30, 0x44, 0x0F, 0x29, 0x52, 0x40, 0x44, 0x0F, 0x29, 0x5A, 0x50, 0x44, 0x0F, 0x29,
|
|
0x62, 0x60, 0x44, 0x0F, 0x29, 0x6A, 0x70, 0x44, 0x0F, 0x29, 0xB2, 0x80, 0x00, 0x00, 0x00, 0x44,
|
|
0x0F, 0x29, 0xBA, 0x90, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x69, 0x08, 0x48, 0x8B, 0x71, 0x10, 0x48,
|
|
0x8B, 0x79, 0x18, 0x48, 0x8B, 0x59, 0x20, 0x4C, 0x8B, 0x61, 0x28, 0x4C, 0x8B, 0x69, 0x30, 0x4C,
|
|
0x8B, 0x71, 0x38, 0x4C, 0x8B, 0x79, 0x40, 0x48, 0x81, 0xC1, 0x80, 0x00, 0x00, 0x00, 0x48, 0x83,
|
|
0xE1, 0xF0, 0x0F, 0x29, 0x31, 0x0F, 0x29, 0x79, 0x10, 0x44, 0x0F, 0x29, 0x41, 0x20, 0x44, 0x0F,
|
|
0x29, 0x49, 0x30, 0x44, 0x0F, 0x29, 0x51, 0x40, 0x44, 0x0F, 0x29, 0x59, 0x50, 0x44, 0x0F, 0x29,
|
|
0x61, 0x60, 0x44, 0x0F, 0x29, 0x69, 0x70, 0x44, 0x0F, 0x29, 0xB1, 0x80, 0x00, 0x00, 0x00, 0x44,
|
|
0x0F, 0x29, 0xB9, 0x90, 0x00, 0x00, 0x00, 0xFF, 0xE0,
|
|
};
|
|
|
|
#include <windows.h>
|
|
|
|
void co_init() {
|
|
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, 0x48, 0x8B, 0x27, 0x58, 0x48, 0x89, 0x6E, 0x08, 0x48, 0x89, 0x5E, 0x10, 0x4C,
|
|
0x89, 0x66, 0x18, 0x4C, 0x89, 0x6E, 0x20, 0x4C, 0x89, 0x76, 0x28, 0x4C, 0x89, 0x7E, 0x30, 0x48,
|
|
0x8B, 0x6F, 0x08, 0x48, 0x8B, 0x5F, 0x10, 0x4C, 0x8B, 0x67, 0x18, 0x4C, 0x8B, 0x6F, 0x20, 0x4C,
|
|
0x8B, 0x77, 0x28, 0x4C, 0x8B, 0x7F, 0x30, 0xFF, 0xE0,
|
|
};
|
|
|
|
#include <unistd.h>
|
|
#include <sys/mman.h>
|
|
|
|
void co_init() {
|
|
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() {
|
|
assert(0); /* called only if cothread_t entrypoint returns */
|
|
}
|
|
|
|
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)) {
|
|
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
|