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move syscalls to core

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Eric Lewis 2022-03-30 15:53:32 -04:00 • committed by Ryan C. Gordon
parent b2d11783da
commit e276999061
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2 changed files with 126 additions and 118 deletions
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126
src/core/playdate/SDL_playdate.c Normal file
View file

@ -0,0 +1,126 @@
#include "../../SDL_internal.h"
#include <errno.h>
#include <stdio.h>
#include <sys/stat.h>
#ifdef PLAYDATE
#include "pd_api.h"
#define MAX_DESCRIPTORS 64
#define RESERVED_DESCRIPTORS 3
static FILE *file_descriptors[MAX_DESCRIPTORS];
#ifndef TARGET_SIMULATOR
extern int _start;
void* _sbrk(int incr)
{
static unsigned char *heap = NULL;
unsigned char *prev_heap;
if (heap == NULL) {
heap = (unsigned char *)&_start;
}
prev_heap = heap;
heap += incr;
return prev_heap;
}
#endif
extern int _write(SDFile *file, char *ptr, int len)
{
return pd->file->write(file, ptr, len);
}
extern int _read(SDFile *file, char *ptr, int len)
{
return pd->file->read(file, ptr, len);
}
extern SDFile* _open(const char *filename, const char *mode)
{
return pd->file->open(filename, kFileRead|kFileReadData|kFileWrite|kFileAppend);
}
extern int _close(SDFile *file)
{
return pd->file->close(file);
}
extern int _fstat(const char *file, struct stat *st)
{
FileStat result;
struct tm ltm;
int rc = pd->file->stat(file, &result);
if (!rc) {
ltm.tm_sec = result.m_second;
ltm.tm_min = result.m_minute;
ltm.tm_hour = result.m_hour;
ltm.tm_mday = result.m_day;
ltm.tm_mon = result.m_month;
ltm.tm_year = result.m_year;
st->st_dev = 0;
st->st_ino = 0;
st->st_mode = 0;
st->st_nlink = 0;
st->st_uid = 0;
st->st_gid = 0;
st->st_rdev = 0;
st->st_size = result.size;
st->st_atime = st->st_mtime = st->st_ctime = mktime(&ltm);
st->st_blksize = 0;
st->st_blocks = 0;
}
return rc;
}
extern int _isatty(int file)
{
if (file < RESERVED_DESCRIPTORS) {
return 1;
}
if (file >= MAX_DESCRIPTORS || file_descriptors[file] == NULL) {
errno = EBADF;
return -1;
}
return 0;
}
extern int _lseek(SDFile *file, int pos, int whence)
{
return pd->file->seek(file, pos, whence);
}
extern void _exit(int code)
{
while(1) { /* noop */ }
}
extern void* realloc(void* ptr, size_t size) {
return pd->system->realloc(ptr, size);
}
extern void* malloc(size_t size) {
return pd->system->realloc(NULL, size);
}
extern void* calloc(size_t count, size_t size) {
return memset(malloc(count * size), 0, count * size);
}
extern void free(void* ptr) {
if (realloc(ptr, 0)) { /* noop */ }
}
#endif /* PLAYDATE */
/* vi: set ts=4 sw=4 expandtab: */

118
src/main/playdate/SDL_playdate_main.c
View file

@ -23,19 +23,8 @@
#include "../../SDL_internal.h"
#include <errno.h>
#include <stdio.h>
#include <sys/stat.h>
#if defined(SDL_VIDEO_DRIVER_PLAYDATE) && !defined(TARGET_SIMULATOR)
#include "pd_api.h"
#define MAX_DESCRIPTORS 64
#define RESERVED_DESCRIPTORS 3
static FILE *file_descriptors[MAX_DESCRIPTORS];
/* noop - just a stub */
int
main(int argc, char *argv[])
@ -43,111 +32,4 @@ main(int argc, char *argv[])
return 0;
}
#ifndef TARGET_SIMULATOR
extern int _start;
void* _sbrk(int incr)
{
static unsigned char *heap = NULL;
unsigned char *prev_heap;
if (heap == NULL) {
heap = (unsigned char *)&_start;
}
prev_heap = heap;
heap += incr;
return prev_heap;
}
#endif
extern int _write(SDFile *file, char *ptr, int len)
{
return pd->file->write(file, ptr, len);
}
extern int _read(SDFile *file, char *ptr, int len)
{
return pd->file->read(file, ptr, len);
}
extern SDFile* _open(const char *filename, const char *mode)
{
return pd->file->open(filename, kFileRead|kFileReadData|kFileWrite|kFileAppend);
}
extern int _close(SDFile *file)
{
return pd->file->close(file);
}
extern int _fstat(const char *file, struct stat *st)
{
FileStat result;
struct tm ltm;
int rc = pd->file->stat(file, &result);
if (!rc) {
ltm.tm_sec = result.m_second;
ltm.tm_min = result.m_minute;
ltm.tm_hour = result.m_hour;
ltm.tm_mday = result.m_day;
ltm.tm_mon = result.m_month;
ltm.tm_year = result.m_year;
st->st_dev = 0;
st->st_ino = 0;
st->st_mode = 0;
st->st_nlink = 0;
st->st_uid = 0;
st->st_gid = 0;
st->st_rdev = 0;
st->st_size = result.size;
st->st_atime = st->st_mtime = st->st_ctime = mktime(&ltm);
st->st_blksize = 0;
st->st_blocks = 0;
}
return rc;
}
extern int _isatty(int file)
{
if (file < RESERVED_DESCRIPTORS) {
return 1;
}
if (file >= MAX_DESCRIPTORS || file_descriptors[file] == NULL) {
errno = EBADF;
return -1;
}
return 0;
}
extern int _lseek(SDFile *file, int pos, int whence)
{
return pd->file->seek(file, pos, whence);
}
extern void _exit(int code)
{
while(1) { /* noop */ }
}
extern void* realloc(void* ptr, size_t size) {
return pd->system->realloc(ptr, size);
}
extern void* malloc(size_t size) {
return pd->system->realloc(NULL, size);
}
extern void* calloc(size_t count, size_t size) {
return memset(malloc(count * size), 0, count * size);
}
extern void free(void* ptr) {
if (realloc(ptr, 0)) { /* noop */ }
}
#endif