#include "sys_cacheflush.h"
#include "realfuncs.h"
-#if (dbg & 2)
+#if (DBG & 2) && !(DBG & 4)
#define LOG_IO_UNK
#endif
-#if (dbg & 4)
+#if (DBG & 4)
#define LOG_IO
#endif
//#define LOG_SEGV
#include "mmsp2-regs.h"
#endif
+typedef unsigned long long u64;
typedef unsigned int u32;
typedef unsigned short u16;
typedef unsigned char u8;
static pthread_mutex_t fb_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t fb_cond = PTHREAD_COND_INITIALIZER;
-struct uppermem_block {
- u32 addr; // physical
- u32 size;
- void *mem;
- struct uppermem_block *next;
-};
-
-static struct uppermem_block *upper_mem;
-
static struct {
u32 dstctrl;
u32 dstaddr;
};
// state
+ void *umem;
u16 host_pal[256];
u32 old_mlc_stl_adr;
u32 btn_state; // as seen through /dev/GPIO
static void *uppermem_lookup(u32 addr, u8 **mem_end)
{
- struct uppermem_block *ub;
+ // XXX: maybe support mirroring?
+ if ((addr & 0xfe000000) != 0x02000000)
+ return NULL;
- for (ub = upper_mem; ub != NULL; ub = ub->next) {
- if (ub->addr <= addr && addr < ub->addr + ub->size) {
- *mem_end = (u8 *)ub->mem + ub->size;
- return (u8 *)ub->mem + addr - ub->addr;
- }
- }
-
- return NULL;
+ *mem_end = (u8 *)mmsp2.umem + 0x02000000;
+ return (u8 *)mmsp2.umem - 0x02000000 + addr;
}
static void blitter_do(void)
u32 d = 0;
if ((a & 0xfff00000) == 0x7f000000) {
u32 a_ = a & 0xffff;
+ struct timespec ts;
+ u64 t64;
+
switch (a_) {
case 0x0a00: // TCOUNT, 1/7372800s
- // TODO
+ clock_gettime(CLOCK_REALTIME, &ts);
+ t64 = (u64)ts.tv_sec * 1000000000 + ts.tv_nsec;
+ // t * 7372800.0 / 1000000000 * 0x100000000 ~= t * 31665935
+ t64 *= 31665935;
+ d = t64 >> 32;
break;
}
}
u32 code[0];
};
-struct linkpage {
- u32 saved_regs[15];
- u32 cpsr;
- u32 *handler_stack;
+struct op_linkpage {
void (*handler)(struct op_context *op_ctx);
u32 code[0];
};
-static struct linkpage *g_linkpage;
+struct op_stackframe {
+ u32 saved_regs[15];
+ u32 cpsr;
+};
+
+static struct op_linkpage *g_linkpage;
static u32 *g_code_ptr;
static int g_linkpage_count;
-static void *g_handler_stack_end;
-
#define BIT_SET(v, b) (v & (1 << (b)))
-static void handle_op(struct op_context *op_ctx)
+void emu_handle_op(struct op_context *op_ctx, struct op_stackframe *sframe)
{
- u32 *regs = g_linkpage->saved_regs;
+ u32 *regs = sframe->saved_regs;
u32 op = op_ctx->op;
u32 t, shift, ret, addr;
int rn, rd;
static void init_linkpage(void)
{
- g_linkpage->handler = handle_op;
- g_linkpage->handler_stack = g_handler_stack_end;
+ g_linkpage->handler = emu_call_handle_op;
g_code_ptr = g_linkpage->code;
-
- // common_code.
- // r0 and r14 must be saved by caller, r0 is arg for handle_op
- // on return everything is restored except lr, which is used to return
- emit_op_io(0xe50f1000, &g_linkpage->saved_regs[1]); // str r1, [->saved_regs[1]] @ save r1
- emit_op (0xe24f1000 + // sub r1, pc, =offs(saved_regs[2])
- (g_code_ptr - &g_linkpage->saved_regs[2] + 2) * 4);
- emit_op (0xe8813ffc); // stmia r1, {r2-r13}
- emit_op_io(0xe51fd000, // ldr sp, [->handler_stack]
- (u32 *)&g_linkpage->handler_stack);
- emit_op (0xe2414008); // sub r4, r1, #4*2
- emit_op (0xe10f1000); // mrs r1, cpsr
- emit_op_io(0xe50f1000, &g_linkpage->cpsr); // str r1, [->cpsr]
- emit_op (0xe1a0500e); // mov r5, lr
- emit_op (0xe1a0e00f); // mov lr, pc
- emit_op_io(0xe51ff000, (u32 *)&g_linkpage->handler); // ldr pc, =handle_op
- emit_op_io(0xe51f1000, &g_linkpage->cpsr); // ldr r1, [->cpsr]
- emit_op (0xe128f001); // msr cpsr_f, r1
- emit_op (0xe1a0e005); // mov lr, r5
- emit_op (0xe8943fff); // ldmia r4, {r0-r13}
- emit_op (0xe12fff1e); // bx lr @ return
}
static void segv_sigaction(int num, siginfo_t *info, void *ctx)
*pc = make_jmp(pc, g_code_ptr, 0);
// generate code:
- // TODO: multithreading
- emit_op_io(0xe50f0000, &g_linkpage->saved_regs[0]); // str r0, [->saved_regs[0]] @ save r0
- emit_op_io(0xe50fe000, &g_linkpage->saved_regs[14]); // str r14, [->saved_regs[14]]
+ emit_op (0xe50d0000 + 0xf00 - 4 * 0); // str r0, [sp, #(-0xf00 + r0_offs)]
+ emit_op (0xe50de000 + 0xf00 - 4 * 14); // str lr, [sp, #(-0xf00 + lr_offs)]
emit_op (0xe24f0000 + (g_code_ptr - (u32 *)op_ctx + 2) * 4); // sub r0, pc, #op_ctx
- emit_op (make_jmp(g_code_ptr, &g_linkpage->code[0], 1)); // bl common_code
- emit_op_io(0xe51fe000, &g_linkpage->saved_regs[14]); // ldr r14, [->saved_regs[14]]
+ emit_op (0xe1a0e00f); // mov lr, pc
+ emit_op_io(0xe51ff000, (u32 *)&g_linkpage->handler); // ldr pc, =handle_op
+ emit_op (0xe51de000 + 0xf00 - 4 * 14); // ldr lr, [sp, #(-0xf00 + lr_offs)]
emit_op (make_jmp(g_code_ptr, pc + 1, 0)); // jmp <back>
// sync caches
void *pret;
int ret;
- g_handler_stack_end = (void *)((long)alloca(1536 * 1024) & ~0xffff);
- log("handler stack @ %p (current %p)\n", g_handler_stack_end, &ret);
- // touch it now. If we crash now we'll know why
- *((char *)g_handler_stack_end - 4096) = 1;
-
g_linkpage = (void *)(((u32)map_bottom - LINKPAGE_ALLOC) & ~0xfff);
pret = mmap(g_linkpage, LINKPAGE_ALLOC, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
log("linkpages @ %p\n", g_linkpage);
init_linkpage();
+ mmsp2.umem = mmap(NULL, 0x2000000, PROT_READ|PROT_WRITE|PROT_EXEC,
+ MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+ if (mmsp2.umem == MAP_FAILED) {
+ perror(PFX "mmap upper mem");
+ exit(1);
+ }
+
// host stuff
ret = host_video_init(&host_stride, 0);
if (ret != 0) {
static void *emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset)
{
- struct uppermem_block *umem;
- char name[32];
- int fd;
+ u8 *umem, *umem_end;
// SoC regs
if ((offset & ~0xffff) == 0xc0000000) {
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0);
}
// upper mem
- if ((offset & 0xfe000000) != 0x02000000)
+ if ((offset & 0xfe000000) != 0x02000000) {
err("unexpected devmem mmap @ %08x\n", offset);
-
- umem = calloc(1, sizeof(*umem));
- if (umem == NULL) {
- err("OOM\n");
- return MAP_FAILED;
- }
-
- umem->addr = offset;
- umem->size = length;
- umem->mem = mmap(NULL, length, prot, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
- if (umem->mem != MAP_FAILED)
- goto done;
-
- log("upper mem @ %08x %d mmap fail, trying backing file\n", offset, length);
- sprintf(name, "m%08x", offset);
- fd = open(name, O_CREAT|O_RDWR, 0644);
- lseek(fd, length - 1, SEEK_SET);
- name[0] = 0;
- write(fd, name, 1);
-
- umem->mem = mmap(NULL, length, prot, MAP_SHARED, fd, 0);
- if (umem->mem == MAP_FAILED) {
- err("failed, giving up\n");
- close(fd);
- free(umem);
errno = EINVAL;
return MAP_FAILED;
}
-done:
- log("upper mem @ %08x %d\n", offset, length);
- umem->next = upper_mem;
- upper_mem = umem;
- return umem->mem;
+ umem = uppermem_lookup(offset, &umem_end);
+ if (umem + length > umem_end)
+ err("warning: uppermem @ %08x overflows by %d bytes\n",
+ offset, umem + length - umem_end);
+
+ dbg("upper mem @ %08x %d\n", offset, length);
+ return umem;
}
void *emu_do_mmap(unsigned int length, int prot, int flags, int fd, unsigned int offset)
{ "/mnt/tmp/", "/tmp/" },
};
-// FIXME: threads..
static const char *wrap_path(const char *path)
{
- static char tmp_path[512];
+ char *buff;
+ size_t size;
int i, len;
// do only path mapping for now
for (i = 0; i < ARRAY_SIZE(path_map); i++) {
len = strlen(path_map[i].from);
if (strncmp(path, path_map[i].from, len) == 0) {
- snprintf(tmp_path, sizeof(tmp_path), "%s%s", path_map[i].to, path + len);
- dbg("mapped path \"%s\" -> \"%s\"\n", path, tmp_path);
- return tmp_path;
+ size = strlen(path) + strlen(path_map[i].to) + 1;
+ buff = malloc(size);
+ if (buff == NULL)
+ break;
+ snprintf(buff, size, "%s%s", path_map[i].to, path + len);
+ dbg("mapped path \"%s\" -> \"%s\"\n", path, buff);
+ return buff;
}
}
void *emu_do_fopen(const char *path, const char *mode)
{
- return fopen(wrap_path(path), mode);
+ const char *w_path = wrap_path(path);
+ FILE *ret;
+ ret = fopen(w_path, mode);
+ if (w_path != path)
+ free((void *)w_path);
+ return ret;
}
+// FIXME: threads..
int emu_do_system(const char *command)
{
static char tmp_path[512];
- char *p, *p2;
+ const char *p2;
+ char *p;
if (command == NULL)
return -1;
make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep");
p = tmp_path + strlen(tmp_path);
- snprintf(p, sizeof(tmp_path) - (p - tmp_path), " %s", wrap_path(command));
+ p2 = wrap_path(command);
+ snprintf(p, sizeof(tmp_path) - (p - tmp_path), " %s", p2);
+ if (p2 != command)
+ free((void *)p2);
+
dbg("system: \"%s\"\n", tmp_path);
return system(tmp_path);
}
notaz.gp2x.de / ginge.git / commitdiff