#include <stdlib.h>
#include <assert.h>
+#include "../../pico/pico_int.h"
#include "sh2.h"
#include "compiler.h"
#include "../drc/cmn.h"
#define DRC_DEBUG 0
#endif
+#define dbg(l,...) { \
+ if ((l) & DRC_DEBUG) \
+ elprintf(EL_STATUS, ##__VA_ARGS__); \
+}
+
#if DRC_DEBUG
#include "mame/sh2dasm.h"
#include <platform/linux/host_dasm.h>
static int insns_compiled, hash_collisions, host_insn_count;
#endif
#if (DRC_DEBUG & 2)
-static void *tcache_dsm_ptr = tcache;
+static u8 *tcache_dsm_ptrs[3];
static char sh2dasm_buff[64];
+#define do_host_disasm(tcid) \
+ host_dasm(tcache_dsm_ptrs[tcid], tcache_ptr - tcache_dsm_ptrs[tcid]); \
+ tcache_dsm_ptrs[tcid] = tcache_ptr
+#else
+#define do_host_disasm(x)
#endif
#define BLOCK_CYCLE_LIMIT 100
+#define MAX_BLOCK_SIZE (BLOCK_CYCLE_LIMIT * 6 * 6)
+
+// we have 3 translation cache buffers, split from one drc/cmn buffer.
+// BIOS shares tcache with data array because it's only used for init
+// and can be discarded early
+static const int tcache_sizes[3] = {
+ DRC_TCACHE_SIZE * 6 / 8, // ROM, DRAM
+ DRC_TCACHE_SIZE / 8, // BIOS, data array in master sh2
+ DRC_TCACHE_SIZE / 8, // ... slave
+};
-static void *tcache_ptr;
+static u8 *tcache_bases[3];
+static u8 *tcache_ptrs[3];
+
+// ptr for code emiters
+static u8 *tcache_ptr;
#include "../drc/emit_x86.c"
typedef struct block_desc_ {
u32 addr; // SH2 PC address
+ u32 end_addr; // TODO rm?
void *tcache_ptr; // translated block for above PC
- struct block_desc_ *next; // next block with the same PC hash
+ struct block_desc_ *next; // next block with the same PC hash
+#if (DRC_DEBUG & 1)
+ int refcount;
+#endif
} block_desc;
-#define MAX_BLOCK_COUNT (4*1024)
-static block_desc *block_table;
-static int block_count;
+static const int block_max_counts[3] = {
+ 4*1024,
+ 256,
+ 256,
+};
+static block_desc *block_tables[3];
+static int block_counts[3];
+// ROM hash table
#define MAX_HASH_ENTRIES 1024
#define HASH_MASK (MAX_HASH_ENTRIES - 1)
+static void **hash_table;
extern void sh2_drc_entry(SH2 *sh2, void *block);
extern void sh2_drc_exit(void);
extern void __attribute__((regparm(2))) sh2_do_op(SH2 *sh2, int opcode);
static void __attribute__((regparm(1))) sh2_test_irq(SH2 *sh2);
+static void flush_tcache(int tcid)
+{
+ printf("tcache #%d flush! (%d/%d, bds %d/%d)\n", tcid,
+ tcache_ptrs[tcid] - tcache_bases[tcid], tcache_sizes[tcid],
+ block_counts[tcid], block_max_counts[tcid]);
+
+ block_counts[tcid] = 0;
+ tcache_ptrs[tcid] = tcache_bases[tcid];
+ if (tcid == 0) { // ROM, RAM
+ memset(hash_table, 0, sizeof(hash_table[0]) * MAX_HASH_ENTRIES);
+ memset(Pico32xMem->drcblk_ram, 0, sizeof(Pico32xMem->drcblk_ram));
+ }
+ else
+ memset(Pico32xMem->drcblk_da[tcid - 1], 0, sizeof(Pico32xMem->drcblk_da[0]));
+#if (DRC_DEBUG & 2)
+ tcache_dsm_ptrs[tcid] = tcache_bases[tcid];
+#endif
+}
+
static void *dr_find_block(block_desc *tab, u32 addr)
{
for (tab = tab->next; tab != NULL; tab = tab->next)
return NULL;
}
-static block_desc *dr_add_block(u32 addr, void *tcache_ptr)
+static block_desc *dr_add_block(u32 addr, int tcache_id, int *blk_id)
{
+ int *bcount = &block_counts[tcache_id];
block_desc *bd;
- if (block_count == MAX_BLOCK_COUNT) {
- // FIXME: flush cache instead
- printf("block descriptor overflow\n");
- exit(1);
- }
+ if (*bcount >= block_max_counts[tcache_id])
+ return NULL;
- bd = &block_table[block_count];
+ bd = &block_tables[tcache_id][*bcount];
bd->addr = addr;
bd->tcache_ptr = tcache_ptr;
- block_count++;
+ *blk_id = *bcount;
+ (*bcount)++;
return bd;
}
static void *sh2_translate(SH2 *sh2, block_desc *other_block)
{
- void *block_entry = tcache_ptr;
+ void *block_entry;
block_desc *this_block;
unsigned int pc = sh2->pc;
int op, delayed_op = 0, test_irq = 0;
+ int tcache_id = 0, blkid = 0;
int cycles = 0;
u32 tmp, tmp2;
- this_block = dr_add_block(pc, block_entry);
- if (other_block != NULL)
- this_block->next = other_block;
+ // validate PC
+ tmp = sh2->pc >> 29;
+ if ((tmp != 0 && tmp != 1 && tmp != 6) || sh2->pc == 0) {
+ printf("invalid PC, aborting: %08x\n", sh2->pc);
+ // FIXME: be less destructive
+ exit(1);
+ }
+
+ if ((sh2->pc & 0xe0000000) == 0xc0000000 || (sh2->pc & ~0xfff) == 0) {
+ // data_array, BIOS have separate tcache (shared)
+ tcache_id = 1 + sh2->is_slave;
+ }
+
+ tcache_ptr = tcache_ptrs[tcache_id];
+ this_block = dr_add_block(pc, tcache_id, &blkid);
+
+ tmp = tcache_ptr - tcache_bases[tcache_id];
+ if (tmp > tcache_sizes[tcache_id] - MAX_BLOCK_SIZE || this_block == NULL) {
+ flush_tcache(tcache_id);
+ tcache_ptr = tcache_ptrs[tcache_id];
+ other_block = NULL; // also gone too due to flush
+ this_block = dr_add_block(pc, tcache_id, &blkid);
+ }
- HASH_FUNC(sh2->pc_hashtab, pc) = this_block;
+ this_block->next = other_block;
+ if ((sh2->pc & 0xc6000000) == 0x02000000) // ROM
+ HASH_FUNC(hash_table, pc) = this_block;
+ block_entry = tcache_ptr;
#if (DRC_DEBUG & 1)
- printf("== %csh2 block #%d %08x -> %p\n", sh2->is_slave ? 's' : 'm',
- block_count, pc, block_entry);
+ printf("== %csh2 block #%d,%d %08x -> %p\n", sh2->is_slave ? 's' : 'm',
+ tcache_id, block_counts[tcache_id], pc, block_entry);
if (other_block != NULL) {
printf(" hash collision with %08x\n", other_block->addr);
hash_collisions++;
// RTE 0000000000101011
//emit_move_r_r(SHR_PC, SHR_PR);
emit_move_r_imm32(SHR_PC, pc - 2);
- emith_pass_arg(2, sh2, op);
+ emith_pass_arg_r(0, CONTEXT_REG);
+ emith_pass_arg_imm(1, op);
emith_call(sh2_do_op);
emit_move_r_r(SHR_PPC, SHR_PC);
test_irq = 1;
default:
default_:
emit_move_r_imm32(SHR_PC, pc - 2);
- emith_pass_arg(2, sh2, op);
+ emith_pass_arg_r(0, CONTEXT_REG);
+ emith_pass_arg_imm(1, op);
emith_call(sh2_do_op);
break;
}
emit_move_r_r(SHR_PC, SHR_PPC);
if (test_irq && delayed_op != 2) {
- emith_pass_arg(1, sh2);
+ emith_pass_arg_r(0, CONTEXT_REG);
emith_call(sh2_test_irq);
break;
}
if (delayed_op == 1)
break;
-#if (DRC_DEBUG & 2)
- host_dasm(tcache_dsm_ptr, (char *)tcache_ptr - (char *)tcache_dsm_ptr);
- tcache_dsm_ptr = tcache_ptr;
-#endif
+ do_host_disasm(tcache_id);
}
end_block:
- if ((char *)tcache_ptr - (char *)tcache > DRC_TCACHE_SIZE) {
- printf("tcache overflow!\n");
- fflush(stdout);
- exit(1);
+ this_block->end_addr = pc;
+
+ // mark memory blocks as containing compiled code
+ if ((sh2->pc & 0xe0000000) == 0xc0000000 || (sh2->pc & ~0xfff) == 0) {
+ // data array, BIOS
+ u16 *drcblk = Pico32xMem->drcblk_da[sh2->is_slave];
+ tmp = (this_block->addr & 0xfff) >> SH2_DRCBLK_DA_SHIFT;
+ tmp2 = (this_block->end_addr & 0xfff) >> SH2_DRCBLK_DA_SHIFT;
+ Pico32xMem->drcblk_da[sh2->is_slave][tmp] = (blkid << 1) | 1;
+ for (++tmp; tmp < tmp2; tmp++) {
+ if (drcblk[tmp])
+ break; // dont overwrite overlay block
+ drcblk[tmp] = blkid << 1;
+ }
+ }
+ else if ((this_block->addr & 0xc7fc0000) == 0x06000000) { // DRAM
+ tmp = (this_block->addr & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT;
+ tmp2 = (this_block->end_addr & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT;
+ Pico32xMem->drcblk_ram[tmp] = (blkid << 1) | 1;
+ for (++tmp; tmp < tmp2; tmp++) {
+ if (Pico32xMem->drcblk_ram[tmp])
+ break;
+ Pico32xMem->drcblk_ram[tmp] = blkid << 1;
+ }
}
if (reg_map_g2h[SHR_SR] == -1) {
} else
emith_sub_r_imm(reg_map_g2h[SHR_SR], cycles << 12);
emith_jump(sh2_drc_exit);
-
-#if (DRC_DEBUG & 2)
- host_dasm(tcache_dsm_ptr, (char *)tcache_ptr - (char *)tcache_dsm_ptr);
- tcache_dsm_ptr = tcache_ptr;
-#endif
-#if (DRC_DEBUG & 1)
- printf(" tcache %d/%d, hash collisions %d/%d, insns %d -> %d %.3f\n",
- (char *)tcache_ptr - (char *)tcache, DRC_TCACHE_SIZE,
- hash_collisions, block_count, insns_compiled, host_insn_count,
- (double)host_insn_count / insns_compiled);
-#endif
+ tcache_ptrs[tcache_id] = tcache_ptr;
+
+ do_host_disasm(tcache_id);
+ dbg(1, " block #%d,%d tcache %d/%d, insns %d -> %d %.3f",
+ tcache_id, block_counts[tcache_id],
+ tcache_ptr - tcache_bases[tcache_id], tcache_sizes[tcache_id],
+ insns_compiled, host_insn_count, (double)host_insn_count / insns_compiled);
+ if ((sh2->pc & 0xc6000000) == 0x02000000) // ROM
+ dbg(1, " hash collisions %d/%d", hash_collisions, block_counts[tcache_id]);
return block_entry;
-
+/*
unimplemented:
// last op
-#if (DRC_DEBUG & 2)
- host_dasm(tcache_dsm_ptr, (char *)tcache_ptr - (char *)tcache_dsm_ptr);
- tcache_dsm_ptr = tcache_ptr;
-#endif
+ do_host_disasm(tcache_id);
exit(1);
+*/
}
void __attribute__((noinline)) sh2_drc_dispatcher(SH2 *sh2)
while (((signed int)sh2->sr >> 12) > 0)
{
void *block = NULL;
- block_desc *bd;
+ block_desc *bd = NULL;
// FIXME: must avoid doing it so often..
sh2_test_irq(sh2);
- bd = HASH_FUNC(sh2->pc_hashtab, sh2->pc);
-
- if (bd != NULL) {
- if (bd->addr == sh2->pc)
+ // we have full block id tables for data_array and RAM
+ // BIOS goes to data_array table too
+ if ((sh2->pc & 0xff000000) == 0xc0000000 || (sh2->pc & ~0xfff) == 0) {
+ int blkid = Pico32xMem->drcblk_da[sh2->is_slave][(sh2->pc & 0xfff) >> SH2_DRCBLK_DA_SHIFT];
+ if (blkid & 1) {
+ bd = &block_tables[1 + sh2->is_slave][blkid >> 1];
+ block = bd->tcache_ptr;
+ }
+ }
+ // RAM
+ else if ((sh2->pc & 0xc6000000) == 0x06000000) {
+ int blkid = Pico32xMem->drcblk_ram[(sh2->pc & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT];
+ if (blkid & 1) {
+ bd = &block_tables[0][blkid >> 1];
block = bd->tcache_ptr;
- else
- block = dr_find_block(bd, sh2->pc);
+ }
+ }
+ // ROM
+ else if ((sh2->pc & 0xc6000000) == 0x02000000) {
+ bd = HASH_FUNC(hash_table, sh2->pc);
+
+ if (bd != NULL) {
+ if (bd->addr == sh2->pc)
+ block = bd->tcache_ptr;
+ else
+ block = dr_find_block(bd, sh2->pc);
+ }
}
if (block == NULL)
block = sh2_translate(sh2, bd);
-#if (DRC_DEBUG & 4)
- printf("= %csh2 enter %08x %p\n", sh2->is_slave ? 's' : 'm', sh2->pc, block);
+ dbg(4, "= %csh2 enter %08x %p, c=%d", sh2->is_slave ? 's' : 'm',
+ sh2->pc, block, (signed int)sh2->sr >> 12);
+#if (DRC_DEBUG & 1)
+ if (bd != NULL)
+ bd->refcount++;
#endif
sh2_drc_entry(sh2, block);
}
}
+static void sh2_smc_rm_block(u16 *drcblk, u16 *p, block_desc *btab, u32 a)
+{
+ u16 id = *p >> 1;
+ block_desc *bd = btab + id;
+
+ dbg(1, " killing block %08x", bd->addr);
+ bd->addr = bd->end_addr = 0;
+
+ while (p > drcblk && (p[-1] >> 1) == id)
+ p--;
+
+ // check for possible overlay block
+ if (p > 0 && p[-1] != 0) {
+ bd = btab + (p[-1] >> 1);
+ if (bd->addr <= a && a < bd->end_addr)
+ sh2_smc_rm_block(drcblk, p - 1, btab, a);
+ }
+
+ do {
+ *p++ = 0;
+ }
+ while ((*p >> 1) == id);
+}
+
+void sh2_drc_wcheck_ram(unsigned int a, int val, int cpuid)
+{
+ u16 *drcblk = Pico32xMem->drcblk_ram;
+ u16 *p = drcblk + ((a & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT);
+
+ dbg(1, "%csh2 smc check @%08x", cpuid ? 's' : 'm', a);
+ sh2_smc_rm_block(drcblk, p, block_tables[0], a);
+}
+
+void sh2_drc_wcheck_da(unsigned int a, int val, int cpuid)
+{
+ u16 *drcblk = Pico32xMem->drcblk_da[cpuid];
+ u16 *p = drcblk + ((a & 0xfff) >> SH2_DRCBLK_DA_SHIFT);
+
+ dbg(1, "%csh2 smc check @%08x", cpuid ? 's' : 'm', a);
+ sh2_smc_rm_block(drcblk, p, block_tables[1 + cpuid], a);
+}
+
void sh2_execute(SH2 *sh2, int cycles)
{
sh2->cycles_aim += cycles;
}
}
+#if (DRC_DEBUG & 1)
+static void block_stats(void)
+{
+ int c, b, i, total = 0;
+
+ for (b = 0; b < ARRAY_SIZE(block_tables); b++)
+ for (i = 0; i < block_counts[b]; i++)
+ if (block_tables[b][i].addr != 0)
+ total += block_tables[b][i].refcount;
+
+ for (c = 0; c < 10; c++) {
+ block_desc *blk, *maxb = NULL;
+ int max = 0;
+ for (b = 0; b < ARRAY_SIZE(block_tables); b++) {
+ for (i = 0; i < block_counts[b]; i++) {
+ blk = &block_tables[b][i];
+ if (blk->addr != 0 && blk->refcount > max) {
+ max = blk->refcount;
+ maxb = blk;
+ }
+ }
+ }
+ if (maxb == NULL)
+ break;
+ printf("%08x %9d %2.3f%%\n", maxb->addr, maxb->refcount,
+ (double)maxb->refcount / total * 100.0);
+ maxb->refcount = 0;
+ }
+}
+#endif
+
int sh2_drc_init(SH2 *sh2)
{
- if (block_table == NULL) {
- block_count = 0;
- block_table = calloc(MAX_BLOCK_COUNT, sizeof(*block_table));
- if (block_table == NULL)
+ if (block_tables[0] == NULL) {
+ int i, cnt;
+ cnt = block_max_counts[0] + block_max_counts[1] + block_max_counts[2];
+ block_tables[0] = calloc(cnt, sizeof(*block_tables[0]));
+ if (block_tables[0] == NULL)
return -1;
- tcache_ptr = tcache;
+ memset(block_counts, 0, sizeof(block_counts));
+ tcache_bases[0] = tcache_ptrs[0] = tcache;
+
+ for (i = 1; i < ARRAY_SIZE(block_tables); i++) {
+ block_tables[i] = block_tables[i - 1] + block_max_counts[i - 1];
+ tcache_bases[i] = tcache_ptrs[i] = tcache_bases[i - 1] + tcache_sizes[i - 1];
+ }
+
+#if (DRC_DEBUG & 2)
+ for (i = 0; i < ARRAY_SIZE(block_tables); i++)
+ tcache_dsm_ptrs[i] = tcache_bases[i];
+#endif
#if (DRC_DEBUG & 1)
hash_collisions = 0;
#endif
}
- //assert(sh2->pc_hashtab == NULL);
- sh2->pc_hashtab = calloc(sizeof(sh2->pc_hashtab[0]), MAX_HASH_ENTRIES);
- if (sh2->pc_hashtab == NULL)
- return -1;
+ if (hash_table == NULL) {
+ hash_table = calloc(sizeof(hash_table[0]), MAX_HASH_ENTRIES);
+ if (hash_table == NULL)
+ return -1;
+ }
return 0;
}
void sh2_drc_finish(SH2 *sh2)
{
- if (block_table != NULL) {
- free(block_table);
- block_table = NULL;
+ if (block_tables[0] != NULL) {
+#if (DRC_DEBUG & 1)
+ block_stats();
+#endif
+ free(block_tables[0]);
+ memset(block_tables, 0, sizeof(block_tables));
}
- free(sh2->pc_hashtab);
- sh2->pc_hashtab = NULL;
+ if (hash_table != NULL) {
+ free(hash_table);
+ hash_table = NULL;
+ }
}
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