/*
* vim:shiftwidth=2:expandtab
*/
+#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
+#include "../../pico/pico_int.h"
#include "sh2.h"
#include "compiler.h"
#include "../drc/cmn.h"
+// debug stuff {
#ifndef DRC_DEBUG
#define DRC_DEBUG 0
#endif
#if DRC_DEBUG
+#define dbg(l,...) { \
+ if ((l) & DRC_DEBUG) \
+ elprintf(EL_STATUS, ##__VA_ARGS__); \
+}
+
#include "mame/sh2dasm.h"
#include <platform/linux/host_dasm.h>
static int insns_compiled, hash_collisions, host_insn_count;
+#define COUNT_OP \
+ host_insn_count++
+#else // !DRC_DEBUG
+#define COUNT_OP
+#define dbg(...)
#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
+#if (DRC_DEBUG & 4)
+static void REGPARM(3) *sh2_drc_announce_entry(void *block, SH2 *sh2, u32 sr)
+{
+ if (block != NULL)
+ dbg(4, "= %csh2 enter %08x %p, c=%d", sh2->is_slave ? 's' : 'm',
+ sh2->pc, block, (signed int)sr >> 12);
+ return block;
+}
+#endif
+// } debug
+
#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
+// XXX: need to tune sizes
+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 u8 *tcache_bases[3];
+static u8 *tcache_ptrs[3];
+
+// ptr for code emiters
+static u8 *tcache_ptr;
+
+// host register tracking
+enum {
+ HR_FREE,
+ HR_CACHED, // 'val' has sh2_reg_e
+ HR_CACHED_DIRTY,
+ HR_CONST, // 'val' has constant
+ HR_TEMP, // reg used for temp storage
+};
+
+typedef struct {
+ u8 reg;
+ u8 type;
+ u16 stamp; // kind of a timestamp
+ u32 val;
+} temp_reg_t;
+
+// note: reg_temp[] must have at least the amount of
+// registers used by handlers in worst case (currently 4)
+#ifdef ARM
+#include "../drc/emit_arm.c"
+
+static const int reg_map_g2h[] = {
+ 4, 5, 6, 7,
+ 8, -1, -1, -1,
+ -1, -1, -1, -1,
+ -1, -1, -1, 9,
+ -1, -1, -1, 10,
+ -1, -1, -1, -1,
+};
+
+static temp_reg_t reg_temp[] = {
+ { 0, },
+ { 1, },
+ { 12, },
+ { 14, },
+ { 2, },
+ { 3, },
+};
+
+#elif defined(__i386__)
+#include "../drc/emit_x86.c"
-static void *tcache_ptr;
+static const int reg_map_g2h[] = {
+ xSI,-1, -1, -1,
+ -1, -1, -1, -1,
+ -1, -1, -1, -1,
+ -1, -1, -1, -1,
+ -1, -1, -1, xDI,
+ -1, -1, -1, -1,
+};
+
+// ax, cx, dx are usually temporaries by convention
+static temp_reg_t reg_temp[] = {
+ { xAX, },
+ { xBX, },
+ { xCX, },
+ { xDX, },
+};
+
+#else
+#error unsupported arch
+#endif
-#include "../drc/emit_x86.c"
+#define T 0x00000001
+#define S 0x00000002
+#define I 0x000000f0
+#define Q 0x00000100
+#define M 0x00000200
+#define T_save 0x00000800
-typedef enum {
- SHR_R0 = 0, SHR_R15 = 15,
- SHR_PC, SHR_PPC, SHR_PR, SHR_SR,
- SHR_GBR, SHR_VBR, SHR_MACH, SHR_MACL,
-} sh2_reg_e;
+#define I_SHIFT 4
+#define Q_SHIFT 8
+#define M_SHIFT 9
typedef struct block_desc_ {
- u32 addr; // SH2 PC address
- void *tcache_ptr; // translated block for above PC
- struct block_desc_ *next; // next block with the same PC hash
+ 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
+#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;
+
+#define HASH_FUNC(hash_tab, addr) \
+ ((block_desc **)(hash_tab))[(addr) & HASH_MASK]
+
+static void REGPARM(1) (*sh2_drc_entry)(SH2 *sh2);
+static void (*sh2_drc_dispatcher)(void);
+static void (*sh2_drc_exit)(void);
+static void (*sh2_drc_test_irq)(void);
+static void REGPARM(2) (*sh2_drc_write8)(u32 a, u32 d);
+static void REGPARM(2) (*sh2_drc_write8_slot)(u32 a, u32 d);
+static void REGPARM(2) (*sh2_drc_write16)(u32 a, u32 d);
+static void REGPARM(2) (*sh2_drc_write16_slot)(u32 a, u32 d);
-extern void sh2_drc_entry(SH2 *sh2, void *block);
-extern void sh2_drc_exit(void);
+extern void REGPARM(2) sh2_do_op(SH2 *sh2, int opcode);
-// tmp
-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)
+{
+ dbg(1, "tcache #%d flush! (%d/%d, bds %d/%d)", 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)
{
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)++;
+
+ if ((addr & 0xc6000000) == 0x02000000) { // ROM
+ bd->next = HASH_FUNC(hash_table, addr);
+ HASH_FUNC(hash_table, addr) = bd;
+#if (DRC_DEBUG & 1)
+ if (bd->next != NULL) {
+ printf(" hash collision with %08x\n", bd->next->addr);
+ hash_collisions++;
+ }
+#endif
+ }
return bd;
}
-#define HASH_FUNC(hash_tab, addr) \
- ((block_desc **)(hash_tab))[(addr) & HASH_MASK]
+int find_in_array(u32 *array, size_t size, u32 what)
+{
+ size_t i;
+ for (i = 0; i < size; i++)
+ if (what == array[i])
+ return i;
+
+ return -1;
+}
// ---------------------------------------------------------------
-static void emit_move_r_imm32(sh2_reg_e dst, u32 imm)
+// register chache
+static u16 rcache_counter;
+
+static temp_reg_t *rcache_evict(void)
{
- int host_dst = reg_map_g2h[dst];
- int tmp = 0;
+ // evict reg with oldest stamp
+ int i, oldest = -1;
+ u16 min_stamp = (u16)-1;
+
+ for (i = 0; i < ARRAY_SIZE(reg_temp); i++) {
+ if (reg_temp[i].type == HR_CACHED || reg_temp[i].type == HR_CACHED_DIRTY)
+ if (reg_temp[i].stamp <= min_stamp) {
+ min_stamp = reg_temp[i].stamp;
+ oldest = i;
+ }
+ }
+
+ if (oldest == -1) {
+ printf("no registers to evict, aborting\n");
+ exit(1);
+ }
+
+ i = oldest;
+ if (reg_temp[i].type == HR_CACHED_DIRTY) {
+ // writeback
+ emith_ctx_write(reg_temp[i].reg, reg_temp[i].val * 4);
+ }
- if (host_dst != -1)
- tmp = host_dst;
- emith_move_r_imm(tmp, imm);
- if (host_dst == -1)
- emith_ctx_write(tmp, dst * 4);
+ return ®_temp[i];
}
-static void emit_move_r_r(sh2_reg_e dst, sh2_reg_e src)
+typedef enum {
+ RC_GR_READ,
+ RC_GR_WRITE,
+ RC_GR_RMW,
+} rc_gr_mode;
+
+// note: must not be called when doing conditional code
+static int rcache_get_reg(sh2_reg_e r, rc_gr_mode mode)
+{
+ temp_reg_t *tr;
+ int i;
+
+ // maybe already statically mapped?
+ i = reg_map_g2h[r];
+ if (i != -1)
+ return i;
+
+ rcache_counter++;
+
+ // maybe already cached?
+ for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) {
+ if ((reg_temp[i].type == HR_CACHED || reg_temp[i].type == HR_CACHED_DIRTY) &&
+ reg_temp[i].val == r)
+ {
+ reg_temp[i].stamp = rcache_counter;
+ if (mode != RC_GR_READ)
+ reg_temp[i].type = HR_CACHED_DIRTY;
+ return reg_temp[i].reg;
+ }
+ }
+
+ // use any free reg
+ for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) {
+ if (reg_temp[i].type == HR_FREE || reg_temp[i].type == HR_CONST) {
+ tr = ®_temp[i];
+ goto do_alloc;
+ }
+ }
+
+ tr = rcache_evict();
+
+do_alloc:
+ if (mode != RC_GR_WRITE)
+ emith_ctx_read(tr->reg, r * 4);
+
+ tr->type = mode != RC_GR_READ ? HR_CACHED_DIRTY : HR_CACHED;
+ tr->val = r;
+ tr->stamp = rcache_counter;
+ return tr->reg;
+}
+
+static int rcache_get_tmp(void)
{
- int host_dst = reg_map_g2h[dst], host_src = reg_map_g2h[src];
- int tmp = 0;
+ temp_reg_t *tr;
+ int i;
- if (host_dst != -1 && host_src != -1) {
- emith_move_r_r(host_dst, host_src);
+ for (i = 0; i < ARRAY_SIZE(reg_temp); i++)
+ if (reg_temp[i].type == HR_FREE || reg_temp[i].type == HR_CONST) {
+ tr = ®_temp[i];
+ goto do_alloc;
+ }
+
+ tr = rcache_evict();
+
+do_alloc:
+ tr->type = HR_TEMP;
+ return tr->reg;
+}
+
+static int rcache_get_arg_id(int arg)
+{
+ int i, r = 0;
+ host_arg2reg(r, arg);
+
+ for (i = 0; i < ARRAY_SIZE(reg_temp); i++)
+ if (reg_temp[i].reg == r)
+ break;
+
+ if (i == ARRAY_SIZE(reg_temp))
+ // let's just say it's untracked arg reg
+ return r;
+
+ if (reg_temp[i].type == HR_CACHED_DIRTY) {
+ // writeback
+ emith_ctx_write(reg_temp[i].reg, reg_temp[i].val * 4);
+ }
+ else if (reg_temp[i].type == HR_TEMP) {
+ printf("arg %d reg %d already used, aborting\n", arg, r);
+ exit(1);
+ }
+
+ return i;
+}
+
+// get a reg to be used as function arg
+// it's assumed that regs are cleaned before call
+static int rcache_get_tmp_arg(int arg)
+{
+ int id = rcache_get_arg_id(arg);
+ reg_temp[id].type = HR_TEMP;
+
+ return reg_temp[id].reg;
+}
+
+// same but caches reg. RC_GR_READ only.
+static int rcache_get_reg_arg(int arg, sh2_reg_e r)
+{
+ int i, srcr, dstr, dstid;
+
+ dstid = rcache_get_arg_id(arg);
+ dstr = reg_temp[dstid].reg;
+
+ // maybe already statically mapped?
+ srcr = reg_map_g2h[r];
+ if (srcr != -1)
+ goto do_cache;
+
+ // maybe already cached?
+ for (i = ARRAY_SIZE(reg_temp) - 1; i >= 0; i--) {
+ if ((reg_temp[i].type == HR_CACHED || reg_temp[i].type == HR_CACHED_DIRTY) &&
+ reg_temp[i].val == r)
+ {
+ srcr = reg_temp[i].reg;
+ goto do_cache;
+ }
+ }
+
+ // must read
+ srcr = dstr;
+ emith_ctx_read(srcr, r * 4);
+
+do_cache:
+ if (srcr != dstr)
+ emith_move_r_r(dstr, srcr);
+
+ reg_temp[dstid].stamp = ++rcache_counter;
+ reg_temp[dstid].type = HR_CACHED;
+ reg_temp[dstid].val = r;
+ return dstr;
+}
+
+static void rcache_free_tmp(int hr)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(reg_temp); i++)
+ if (reg_temp[i].reg == hr)
+ break;
+
+ if (i == ARRAY_SIZE(reg_temp) || reg_temp[i].type != HR_TEMP) {
+ printf("rcache_free_tmp fail: #%i hr %d, type %d\n", i, hr, reg_temp[i].type);
return;
}
- if (host_src != -1)
- tmp = host_src;
- if (host_dst != -1)
- tmp = host_dst;
+ reg_temp[i].type = HR_FREE;
+}
- if (host_src == -1)
- emith_ctx_read(tmp, src * 4);
- if (host_dst == -1)
- emith_ctx_write(tmp, dst * 4);
+static void rcache_clean(void)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(reg_temp); i++)
+ if (reg_temp[i].type == HR_CACHED_DIRTY) {
+ // writeback
+ emith_ctx_write(reg_temp[i].reg, reg_temp[i].val * 4);
+ reg_temp[i].type = HR_CACHED;
+ }
}
-static void emit_braf(sh2_reg_e reg, u32 pc)
+static void rcache_invalidate(void)
{
- int host_reg = reg_map_g2h[reg];
- if (host_reg == -1) {
- emith_ctx_read(0, reg * 4);
- } else
- emith_move_r_r(0, host_reg);
- emith_add_r_imm(0, pc);
+ int i;
+ for (i = 0; i < ARRAY_SIZE(reg_temp); i++)
+ reg_temp[i].type = HR_FREE;
+ rcache_counter = 0;
+}
- emith_ctx_write(0, SHR_PPC * 4);
+static void rcache_flush(void)
+{
+ rcache_clean();
+ rcache_invalidate();
}
-/*
-static int sh2_translate_op4(int op)
+// ---------------------------------------------------------------
+
+static void emit_move_r_imm32(sh2_reg_e dst, u32 imm)
{
- switch (op & 0x000f)
- {
- case 0x0b:
- default:
- emith_pass_arg(2, sh2, op);
- emith_call(sh2_do_op);
+ // TODO: propagate this constant
+ int hr = rcache_get_reg(dst, RC_GR_WRITE);
+ emith_move_r_imm(hr, imm);
+}
+
+static void emit_move_r_r(sh2_reg_e dst, sh2_reg_e src)
+{
+ int hr_d = rcache_get_reg(dst, RC_GR_WRITE);
+ int hr_s = rcache_get_reg(src, RC_GR_READ);
+
+ emith_move_r_r(hr_d, hr_s);
+}
+
+// T must be clear, and comparison done just before this
+static void emit_or_t_if_eq(int srr)
+{
+ EMITH_SJMP_START(DCOND_NE);
+ emith_or_r_imm_c(DCOND_EQ, srr, T);
+ EMITH_SJMP_END(DCOND_NE);
+}
+
+// arguments must be ready
+// reg cache must be clean before call
+static int emit_memhandler_read(int size)
+{
+ int ctxr;
+ host_arg2reg(ctxr, 1);
+ emith_move_r_r(ctxr, CONTEXT_REG);
+ switch (size) {
+ case 0: // 8
+ // must writeback cycles for poll detection stuff
+ if (reg_map_g2h[SHR_SR] != -1)
+ emith_ctx_write(reg_map_g2h[SHR_SR], SHR_SR * 4);
+ emith_call(p32x_sh2_read8);
+ break;
+ case 1: // 16
+ if (reg_map_g2h[SHR_SR] != -1)
+ emith_ctx_write(reg_map_g2h[SHR_SR], SHR_SR * 4);
+ emith_call(p32x_sh2_read16);
+ break;
+ case 2: // 32
+ emith_call(p32x_sh2_read32);
break;
}
+ rcache_invalidate();
+ // assuming arg0 and retval reg matches
+ return rcache_get_tmp_arg(0);
+}
- return 0;
+static void emit_memhandler_write(int size, u32 pc, int delay)
+{
+ int ctxr;
+ host_arg2reg(ctxr, 2);
+ switch (size) {
+ case 0: // 8
+ // XXX: consider inlining sh2_drc_write8
+ if (delay) {
+ emith_call(sh2_drc_write8_slot);
+ } else {
+ emit_move_r_imm32(SHR_PC, pc);
+ rcache_clean();
+ emith_call(sh2_drc_write8);
+ }
+ break;
+ case 1: // 16
+ if (delay) {
+ emith_call(sh2_drc_write16_slot);
+ } else {
+ emit_move_r_imm32(SHR_PC, pc);
+ rcache_clean();
+ emith_call(sh2_drc_write16);
+ }
+ break;
+ case 2: // 32
+ emith_move_r_r(ctxr, CONTEXT_REG);
+ emith_call(p32x_sh2_write32);
+ break;
+ }
+ rcache_invalidate();
+}
+
+// @(Rx,Ry)
+static int emit_indirect_indexed_read(int rx, int ry, int size)
+{
+ int a0, t;
+ rcache_clean();
+ a0 = rcache_get_reg_arg(0, rx);
+ t = rcache_get_reg(ry, RC_GR_READ);
+ emith_add_r_r(a0, t);
+ return emit_memhandler_read(size);
+}
+
+// read @Rn, @rm
+static void emit_indirect_read_double(u32 *rnr, u32 *rmr, int rn, int rm, int size)
+{
+ int tmp;
+
+ rcache_clean();
+ rcache_get_reg_arg(0, rn);
+ tmp = emit_memhandler_read(size);
+ emith_ctx_write(tmp, offsetof(SH2, drc_tmp));
+ rcache_free_tmp(tmp);
+ tmp = rcache_get_reg(rn, RC_GR_RMW);
+ emith_add_r_imm(tmp, 1 << size);
+
+ rcache_clean();
+ rcache_get_reg_arg(0, rm);
+ *rmr = emit_memhandler_read(size);
+ *rnr = rcache_get_tmp();
+ emith_ctx_read(*rnr, offsetof(SH2, drc_tmp));
+ tmp = rcache_get_reg(rm, RC_GR_RMW);
+ emith_add_r_imm(tmp, 1 << size);
+}
+
+static void emit_do_static_regs(int is_write, int tmpr)
+{
+ int i, r, count;
+
+ for (i = 0; i < ARRAY_SIZE(reg_map_g2h); i++) {
+ r = reg_map_g2h[i];
+ if (r == -1)
+ continue;
+
+ for (count = 1; i < ARRAY_SIZE(reg_map_g2h) - 1; i++, r++) {
+ if (reg_map_g2h[i + 1] != r + 1)
+ break;
+ count++;
+ }
+
+ if (count > 1) {
+ // i, r point to last item
+ if (is_write)
+ emith_ctx_write_multiple(r - count + 1, (i - count + 1) * 4, count, tmpr);
+ else
+ emith_ctx_read_multiple(r - count + 1, (i - count + 1) * 4, count, tmpr);
+ } else {
+ if (is_write)
+ emith_ctx_write(r, i * 4);
+ else
+ emith_ctx_read(r, i * 4);
+ }
+ }
+}
+
+static void emit_block_entry(void)
+{
+ int arg0, arg1, arg2;
+
+ host_arg2reg(arg0, 0);
+ host_arg2reg(arg1, 1);
+ host_arg2reg(arg2, 2);
+
+#if (DRC_DEBUG & 4)
+ emith_move_r_r(arg1, CONTEXT_REG);
+ emith_move_r_r(arg2, rcache_get_reg(SHR_SR, RC_GR_READ));
+ emith_call(sh2_drc_announce_entry);
+ rcache_invalidate();
+#endif
+ emith_tst_r_r(arg0, arg0);
+ EMITH_SJMP_START(DCOND_EQ);
+ emith_jump_reg_c(DCOND_NE, arg0);
+ EMITH_SJMP_END(DCOND_EQ);
+}
+
+static void REGPARM(3) *lookup_block(u32 pc, int is_slave, int *tcache_id)
+{
+ block_desc *bd = NULL;
+ void *block = NULL;
+ *tcache_id = 0;
+
+ // we have full block id tables for data_array and RAM
+ // BIOS goes to data_array table too
+ if ((pc & 0xe0000000) == 0xc0000000 || (pc & ~0xfff) == 0) {
+ int blkid = Pico32xMem->drcblk_da[is_slave][(pc & 0xfff) >> SH2_DRCBLK_DA_SHIFT];
+ *tcache_id = 1 + is_slave;
+ if (blkid & 1) {
+ bd = &block_tables[*tcache_id][blkid >> 1];
+ block = bd->tcache_ptr;
+ }
+ }
+ // RAM
+ else if ((pc & 0xc6000000) == 0x06000000) {
+ int blkid = Pico32xMem->drcblk_ram[(pc & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT];
+ if (blkid & 1) {
+ bd = &block_tables[0][blkid >> 1];
+ block = bd->tcache_ptr;
+ }
+ }
+ // ROM
+ else if ((pc & 0xc6000000) == 0x02000000) {
+ bd = HASH_FUNC(hash_table, pc);
+
+ if (bd != NULL) {
+ if (bd->addr == pc)
+ block = bd->tcache_ptr;
+ else
+ block = dr_find_block(bd, pc);
+ }
+ }
+
+#if (DRC_DEBUG & 1)
+ if (bd != NULL)
+ bd->refcount++;
+#endif
+ return block;
}
-*/
#define DELAYED_OP \
- delayed_op = 2
+ drcf.delayed_op = 2
+
+#define DELAY_SAVE_T(sr) { \
+ emith_bic_r_imm(sr, T_save); \
+ emith_tst_r_imm(sr, T); \
+ EMITH_SJMP_START(DCOND_EQ); \
+ emith_or_r_imm_c(DCOND_NE, sr, T_save); \
+ EMITH_SJMP_END(DCOND_EQ); \
+ drcf.use_saved_t = 1; \
+}
+
+#define FLUSH_CYCLES(sr) \
+ if (cycles > 0) { \
+ emith_sub_r_imm(sr, cycles << 12); \
+ cycles = 0; \
+ }
#define CHECK_UNHANDLED_BITS(mask) { \
if ((op & (mask)) != 0) \
goto default_; \
}
-static void *sh2_translate(SH2 *sh2, block_desc *other_block)
+#define GET_Fx() \
+ ((op >> 4) & 0x0f)
+
+#define GET_Rm GET_Fx
+
+#define GET_Rn() \
+ ((op >> 8) & 0x0f)
+
+#define CHECK_FX_LT(n) \
+ if (GET_Fx() >= n) \
+ goto default_
+
+#define MAX_LOCAL_BRANCHES 16
+
+// op_flags: data from 1st pass
+#define OP_FLAGS(pc) op_flags[((pc) - base_pc) / 2]
+#define OF_DELAY_OP (1 << 0)
+
+static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id)
{
- void *block_entry = tcache_ptr;
+ // XXX: maybe use structs instead?
+ void *branch_target_ptr[MAX_LOCAL_BRANCHES];
+ u32 branch_target_pc[MAX_LOCAL_BRANCHES];
+ int branch_target_count = 0;
+ void *branch_patch_ptr[MAX_LOCAL_BRANCHES];
+ u32 branch_patch_pc[MAX_LOCAL_BRANCHES];
+ int branch_patch_count = 0;
+ int branch_patch_cond = -1;
+ u8 op_flags[BLOCK_CYCLE_LIMIT + 1];
+ struct {
+ u32 delayed_op:2;
+ u32 test_irq:1;
+ u32 use_saved_t:1; // delayed op modifies T
+ } drcf = { 0, };
+
+ void *block_entry;
block_desc *this_block;
- unsigned int pc = sh2->pc;
- int op, delayed_op = 0, test_irq = 0;
- int cycles = 0;
+ u32 pc, base_pc, end_pc; // PC of current, first, last insn
+ int blkid_main = 0;
u32 tmp, tmp2;
+ int cycles;
+ int op;
+ int i;
- this_block = dr_add_block(pc, block_entry);
- if (other_block != NULL)
- this_block->next = other_block;
+ base_pc = sh2->pc;
- HASH_FUNC(sh2->pc_hashtab, pc) = this_block;
+ // validate PC
+ tmp = base_pc >> 29;
+ if ((tmp != 0 && tmp != 1 && tmp != 6) || base_pc == 0) {
+ printf("invalid PC, aborting: %08x\n", base_pc);
+ // FIXME: be less destructive
+ exit(1);
+ }
-#if (DRC_DEBUG & 1)
- printf("== %csh2 block #%d %08x -> %p\n", sh2->is_slave ? 's' : 'm',
- block_count, pc, block_entry);
- if (other_block != NULL) {
- printf(" hash collision with %08x\n", other_block->addr);
- hash_collisions++;
+ tcache_ptr = tcache_ptrs[tcache_id];
+ this_block = dr_add_block(base_pc, tcache_id, &blkid_main);
+
+ // predict tcache overflow
+ tmp = tcache_ptr - tcache_bases[tcache_id];
+ if (tmp > tcache_sizes[tcache_id] - MAX_BLOCK_SIZE || this_block == NULL)
+ return NULL;
+
+ block_entry = tcache_ptr;
+ dbg(1, "== %csh2 block #%d,%d %08x -> %p", sh2->is_slave ? 's' : 'm',
+ tcache_id, blkid_main, base_pc, block_entry);
+
+ // 1st pass: scan forward for local branches
+ memset(op_flags, 0, sizeof(op_flags));
+ for (cycles = 0, pc = base_pc; cycles < BLOCK_CYCLE_LIMIT; cycles++, pc += 2) {
+ op = p32x_sh2_read16(pc, sh2);
+ if ((op & 0xf000) == 0xa000 || (op & 0xf000) == 0xb000) { // BRA, BSR
+ pc += 2;
+ OP_FLAGS(pc) |= OF_DELAY_OP;
+ break;
+ }
+ if ((op & 0xf000) == 0) {
+ op &= 0xff;
+ if (op == 0x23 || op == 0x03 || op == 0x0b) { // BRAF, BSRF, RTS
+ pc += 2;
+ OP_FLAGS(pc) |= OF_DELAY_OP;
+ break;
+ }
+ continue;
+ }
+ if ((op & 0xf0df) == 0x400b) { // JMP, JSR
+ pc += 2;
+ OP_FLAGS(pc) |= OF_DELAY_OP;
+ break;
+ }
+ if ((op & 0xf900) == 0x8900) { // BT(S), BF(S)
+ signed int offs = ((signed int)(op << 24) >> 23);
+ if (op & 0x0400)
+ OP_FLAGS(pc + 2) |= OF_DELAY_OP;
+ branch_target_pc[branch_target_count++] = pc + offs + 4;
+ if (branch_target_count == MAX_LOCAL_BRANCHES) {
+ printf("warning: branch target overflow\n");
+ // will only spawn additional blocks
+ break;
+ }
+ }
}
-#endif
- while (cycles < BLOCK_CYCLE_LIMIT || delayed_op)
+ end_pc = pc;
+
+ // clean branch_targets that are not really local,
+ // and that land on delay slots
+ for (i = 0, tmp = 0; i < branch_target_count; i++) {
+ pc = branch_target_pc[i];
+ if (base_pc <= pc && pc <= end_pc && !(OP_FLAGS(pc) & OF_DELAY_OP))
+ branch_target_pc[tmp++] = branch_target_pc[i];
+ }
+ branch_target_count = tmp;
+ memset(branch_target_ptr, 0, sizeof(branch_target_ptr[0]) * branch_target_count);
+
+ // -------------------------------------------------
+ // 2nd pass: actual compilation
+ pc = base_pc;
+ for (cycles = 0; pc <= end_pc || drcf.delayed_op; )
{
- if (delayed_op > 0)
- delayed_op--;
+ u32 tmp3, tmp4, sr;
+
+ if (drcf.delayed_op > 0)
+ drcf.delayed_op--;
+
+ i = find_in_array(branch_target_pc, branch_target_count, pc);
+ if (i >= 0)
+ {
+ if (pc != sh2->pc)
+ {
+ /* make "subblock" - just a mid-block entry */
+ block_desc *subblock;
+ u16 *drcblk;
+ int blkid;
+
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ FLUSH_CYCLES(sr);
+ rcache_flush();
+ do_host_disasm(tcache_id);
+
+ subblock = dr_add_block(pc, tcache_id, &blkid);
+ if (subblock == NULL)
+ return NULL;
+ subblock->end_addr = pc;
+
+ if (tcache_id != 0) { // data array, BIOS
+ drcblk = Pico32xMem->drcblk_da[sh2->is_slave];
+ drcblk += (pc & 0x00fff) >> SH2_DRCBLK_DA_SHIFT;
+ *drcblk = (blkid << 1) | 1;
+ } else if ((this_block->addr & 0xc7fc0000) == 0x06000000) { // DRAM
+ drcblk = Pico32xMem->drcblk_ram;
+ drcblk += (pc & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT;
+ *drcblk = (blkid << 1) | 1;
+ }
+
+ dbg(1, "=== %csh2 subblock #%d,%d %08x -> %p", sh2->is_slave ? 's' : 'm',
+ tcache_id, blkid, pc, tcache_ptr);
+ }
+ branch_target_ptr[i] = tcache_ptr;
+
+ // must update PC
+ emit_move_r_imm32(SHR_PC, pc);
+ rcache_clean();
+
+ // check cycles
+ sr = rcache_get_reg(SHR_SR, RC_GR_READ);
+ emith_cmp_r_imm(sr, 0);
+ emith_jump_cond(DCOND_LE, sh2_drc_exit);
+ }
- op = p32x_sh2_read16(pc, sh2->is_slave);
+ op = p32x_sh2_read16(pc, sh2);
#if (DRC_DEBUG & 3)
insns_compiled++;
switch ((op >> 12) & 0x0f)
{
+ /////////////////////////////////////////////
case 0x00:
- switch (op & 0x0f) {
+ switch (op & 0x0f)
+ {
+ case 0x02:
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ switch (GET_Fx())
+ {
+ case 0: // STC SR,Rn 0000nnnn00000010
+ tmp2 = SHR_SR;
+ break;
+ case 1: // STC GBR,Rn 0000nnnn00010010
+ tmp2 = SHR_GBR;
+ break;
+ case 2: // STC VBR,Rn 0000nnnn00100010
+ tmp2 = SHR_VBR;
+ break;
+ default:
+ goto default_;
+ }
+ tmp3 = rcache_get_reg(tmp2, RC_GR_READ);
+ emith_move_r_r(tmp, tmp3);
+ if (tmp2 == SHR_SR)
+ emith_clear_msb(tmp, tmp, 22); // reserved bits defined by ISA as 0
+ goto end_op;
case 0x03:
CHECK_UNHANDLED_BITS(0xd0);
// BRAF Rm 0000mmmm00100011
// BSRF Rm 0000mmmm00000011
DELAYED_OP;
- if (!(op & 0x20))
- emit_move_r_imm32(SHR_PR, pc + 2);
- emit_braf((op >> 8) & 0x0f, pc + 2);
+ tmp = rcache_get_reg(SHR_PC, RC_GR_WRITE);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ emith_move_r_r(tmp, tmp2);
+ if (op & 0x20)
+ emith_add_r_imm(tmp, pc + 2);
+ else { // BSRF
+ tmp3 = rcache_get_reg(SHR_PR, RC_GR_WRITE);
+ emith_move_r_imm(tmp3, pc + 2);
+ emith_add_r_r(tmp, tmp3);
+ }
cycles++;
goto end_op;
+ case 0x04: // MOV.B Rm,@(R0,Rn) 0000nnnnmmmm0100
+ case 0x05: // MOV.W Rm,@(R0,Rn) 0000nnnnmmmm0101
+ case 0x06: // MOV.L Rm,@(R0,Rn) 0000nnnnmmmm0110
+ rcache_clean();
+ tmp = rcache_get_reg_arg(1, GET_Rm());
+ tmp2 = rcache_get_reg_arg(0, SHR_R0);
+ tmp3 = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ emith_add_r_r(tmp2, tmp3);
+ emit_memhandler_write(op & 3, pc, drcf.delayed_op);
+ goto end_op;
+ case 0x07:
+ // MUL.L Rm,Rn 0000nnnnmmmm0111
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE);
+ emith_mul(tmp3, tmp2, tmp);
+ cycles++;
+ goto end_op;
+ case 0x08:
+ CHECK_UNHANDLED_BITS(0xf00);
+ switch (GET_Fx())
+ {
+ case 0: // CLRT 0000000000001000
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, T);
+ break;
+ case 1: // SETT 0000000000011000
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_or_r_imm(sr, T);
+ break;
+ case 2: // CLRMAC 0000000000101000
+ tmp = rcache_get_reg(SHR_MACL, RC_GR_WRITE);
+ emith_move_r_imm(tmp, 0);
+ tmp = rcache_get_reg(SHR_MACH, RC_GR_WRITE);
+ emith_move_r_imm(tmp, 0);
+ break;
+ default:
+ goto default_;
+ }
+ goto end_op;
case 0x09:
- CHECK_UNHANDLED_BITS(0xf0);
- // NOP 0000000000001001
+ switch (GET_Fx())
+ {
+ case 0: // NOP 0000000000001001
+ CHECK_UNHANDLED_BITS(0xf00);
+ break;
+ case 1: // DIV0U 0000000000011001
+ CHECK_UNHANDLED_BITS(0xf00);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, M|Q|T);
+ break;
+ case 2: // MOVT Rn 0000nnnn00101001
+ sr = rcache_get_reg(SHR_SR, RC_GR_READ);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ emith_clear_msb(tmp2, sr, 31);
+ break;
+ default:
+ goto default_;
+ }
+ goto end_op;
+ case 0x0a:
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ switch (GET_Fx())
+ {
+ case 0: // STS MACH,Rn 0000nnnn00001010
+ tmp2 = SHR_MACH;
+ break;
+ case 1: // STS MACL,Rn 0000nnnn00011010
+ tmp2 = SHR_MACL;
+ break;
+ case 2: // STS PR,Rn 0000nnnn00101010
+ tmp2 = SHR_PR;
+ break;
+ default:
+ goto default_;
+ }
+ tmp2 = rcache_get_reg(tmp2, RC_GR_READ);
+ emith_move_r_r(tmp, tmp2);
goto end_op;
case 0x0b:
- CHECK_UNHANDLED_BITS(0xd0);
- DELAYED_OP;
- if (!(op & 0x20)) {
- // RTS 0000000000001011
- emit_move_r_r(SHR_PPC, SHR_PR);
+ CHECK_UNHANDLED_BITS(0xf00);
+ switch (GET_Fx())
+ {
+ case 0: // RTS 0000000000001011
+ DELAYED_OP;
+ emit_move_r_r(SHR_PC, SHR_PR);
cycles++;
- } else {
- // RTE 0000000000101011
- //emit_move_r_r(SHR_PC, SHR_PR);
+ break;
+ case 1: // SLEEP 0000000000011011
emit_move_r_imm32(SHR_PC, pc - 2);
- emith_pass_arg(2, sh2, op);
- emith_call(sh2_do_op);
- emit_move_r_r(SHR_PPC, SHR_PC);
- test_irq = 1;
+ tmp = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_clear_msb(tmp, tmp, 20); // clear cycles
+ cycles = 1;
+ goto end_op;
+ case 2: // RTE 0000000000101011
+ DELAYED_OP;
+ rcache_clean();
+ // pop PC
+ rcache_get_reg_arg(0, SHR_SP);
+ tmp = emit_memhandler_read(2);
+ tmp2 = rcache_get_reg(SHR_PC, RC_GR_WRITE);
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ rcache_clean();
+ // pop SR
+ tmp = rcache_get_reg_arg(0, SHR_SP);
+ emith_add_r_imm(tmp, 4);
+ tmp = emit_memhandler_read(2);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_write_sr(sr, tmp);
+ rcache_free_tmp(tmp);
+ tmp = rcache_get_reg(SHR_SP, RC_GR_RMW);
+ emith_add_r_imm(tmp, 4*2);
+ drcf.test_irq = 1;
cycles += 3;
+ break;
+ default:
+ goto default_;
+ }
+ goto end_op;
+ case 0x0c: // MOV.B @(R0,Rm),Rn 0000nnnnmmmm1100
+ case 0x0d: // MOV.W @(R0,Rm),Rn 0000nnnnmmmm1101
+ case 0x0e: // MOV.L @(R0,Rm),Rn 0000nnnnmmmm1110
+ tmp = emit_indirect_indexed_read(SHR_R0, GET_Rm(), op & 3);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ if ((op & 3) != 2) {
+ emith_sext(tmp2, tmp, (op & 1) ? 16 : 8);
+ } else
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ goto end_op;
+ case 0x0f: // MAC.L @Rm+,@Rn+ 0000nnnnmmmm1111
+ emit_indirect_read_double(&tmp, &tmp2, GET_Rn(), GET_Rm(), 2);
+ sr = rcache_get_reg(SHR_SR, RC_GR_READ);
+ tmp4 = rcache_get_reg(SHR_MACH, RC_GR_RMW);
+ /* MS 16 MAC bits unused if saturated */
+ emith_tst_r_imm(sr, S);
+ EMITH_SJMP_START(DCOND_EQ);
+ emith_clear_msb_c(DCOND_NE, tmp4, tmp4, 16);
+ EMITH_SJMP_END(DCOND_EQ);
+ tmp3 = rcache_get_reg(SHR_MACL, RC_GR_RMW); // might evict SR
+ emith_mula_s64(tmp3, tmp4, tmp, tmp2);
+ rcache_free_tmp(tmp2);
+ sr = rcache_get_reg(SHR_SR, RC_GR_READ); // reget just in case
+ emith_tst_r_imm(sr, S);
+
+ EMITH_JMP_START(DCOND_EQ);
+ emith_asr(tmp, tmp4, 15);
+ emith_cmp_r_imm(tmp, -1); // negative overflow (0x80000000..0xffff7fff)
+ EMITH_SJMP_START(DCOND_GE);
+ emith_move_r_imm_c(DCOND_LT, tmp4, 0x8000);
+ emith_move_r_imm_c(DCOND_LT, tmp3, 0x0000);
+ EMITH_SJMP_END(DCOND_GE);
+ emith_cmp_r_imm(tmp, 0); // positive overflow (0x00008000..0x7fffffff)
+ EMITH_SJMP_START(DCOND_LE);
+ emith_move_r_imm_c(DCOND_GT, tmp4, 0x00007fff);
+ emith_move_r_imm_c(DCOND_GT, tmp3, 0xffffffff);
+ EMITH_SJMP_END(DCOND_LE);
+ EMITH_JMP_END(DCOND_EQ);
+
+ rcache_free_tmp(tmp);
+ cycles += 3;
+ goto end_op;
+ }
+ goto default_;
+
+ /////////////////////////////////////////////
+ case 0x01:
+ // MOV.L Rm,@(disp,Rn) 0001nnnnmmmmdddd
+ rcache_clean();
+ tmp = rcache_get_reg_arg(0, GET_Rn());
+ tmp2 = rcache_get_reg_arg(1, GET_Rm());
+ emith_add_r_imm(tmp, (op & 0x0f) * 4);
+ emit_memhandler_write(2, pc, drcf.delayed_op);
+ goto end_op;
+
+ case 0x02:
+ switch (op & 0x0f)
+ {
+ case 0x00: // MOV.B Rm,@Rn 0010nnnnmmmm0000
+ case 0x01: // MOV.W Rm,@Rn 0010nnnnmmmm0001
+ case 0x02: // MOV.L Rm,@Rn 0010nnnnmmmm0010
+ rcache_clean();
+ rcache_get_reg_arg(0, GET_Rn());
+ rcache_get_reg_arg(1, GET_Rm());
+ emit_memhandler_write(op & 3, pc, drcf.delayed_op);
+ goto end_op;
+ case 0x04: // MOV.B Rm,@–Rn 0010nnnnmmmm0100
+ case 0x05: // MOV.W Rm,@–Rn 0010nnnnmmmm0101
+ case 0x06: // MOV.L Rm,@–Rn 0010nnnnmmmm0110
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ emith_sub_r_imm(tmp, (1 << (op & 3)));
+ rcache_clean();
+ rcache_get_reg_arg(0, GET_Rn());
+ rcache_get_reg_arg(1, GET_Rm());
+ emit_memhandler_write(op & 3, pc, drcf.delayed_op);
+ goto end_op;
+ case 0x07: // DIV0S Rm,Rn 0010nnnnmmmm0111
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, M|Q|T);
+ emith_tst_r_imm(tmp2, (1<<31));
+ EMITH_SJMP_START(DCOND_EQ);
+ emith_or_r_imm_c(DCOND_NE, sr, Q);
+ EMITH_SJMP_END(DCOND_EQ);
+ emith_tst_r_imm(tmp3, (1<<31));
+ EMITH_SJMP_START(DCOND_EQ);
+ emith_or_r_imm_c(DCOND_NE, sr, M);
+ EMITH_SJMP_END(DCOND_EQ);
+ emith_teq_r_r(tmp2, tmp3);
+ EMITH_SJMP_START(DCOND_PL);
+ emith_or_r_imm_c(DCOND_MI, sr, T);
+ EMITH_SJMP_END(DCOND_PL);
+ goto end_op;
+ case 0x08: // TST Rm,Rn 0010nnnnmmmm1000
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, T);
+ emith_tst_r_r(tmp2, tmp3);
+ emit_or_t_if_eq(sr);
+ goto end_op;
+ case 0x09: // AND Rm,Rn 0010nnnnmmmm1001
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_and_r_r(tmp, tmp2);
+ goto end_op;
+ case 0x0a: // XOR Rm,Rn 0010nnnnmmmm1010
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_eor_r_r(tmp, tmp2);
+ goto end_op;
+ case 0x0b: // OR Rm,Rn 0010nnnnmmmm1011
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_or_r_r(tmp, tmp2);
+ goto end_op;
+ case 0x0c: // CMP/STR Rm,Rn 0010nnnnmmmm1100
+ tmp = rcache_get_tmp();
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_eor_r_r_r(tmp, tmp2, tmp3);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, T);
+ emith_tst_r_imm(tmp, 0x000000ff);
+ emit_or_t_if_eq(tmp);
+ emith_tst_r_imm(tmp, 0x0000ff00);
+ emit_or_t_if_eq(tmp);
+ emith_tst_r_imm(tmp, 0x00ff0000);
+ emit_or_t_if_eq(tmp);
+ emith_tst_r_imm(tmp, 0xff000000);
+ emit_or_t_if_eq(tmp);
+ rcache_free_tmp(tmp);
+ goto end_op;
+ case 0x0d: // XTRCT Rm,Rn 0010nnnnmmmm1101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ emith_lsr(tmp, tmp, 16);
+ emith_or_r_r_lsl(tmp, tmp2, 16);
+ goto end_op;
+ case 0x0e: // MULU.W Rm,Rn 0010nnnnmmmm1110
+ case 0x0f: // MULS.W Rm,Rn 0010nnnnmmmm1111
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp = rcache_get_reg(SHR_MACL, RC_GR_WRITE);
+ if (op & 1) {
+ emith_sext(tmp, tmp2, 16);
+ } else
+ emith_clear_msb(tmp, tmp2, 16);
+ tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ tmp2 = rcache_get_tmp();
+ if (op & 1) {
+ emith_sext(tmp2, tmp3, 16);
+ } else
+ emith_clear_msb(tmp2, tmp3, 16);
+ emith_mul(tmp, tmp, tmp2);
+ rcache_free_tmp(tmp2);
+// FIXME: causes timing issues in Doom?
+// cycles++;
+ goto end_op;
+ }
+ goto default_;
+
+ /////////////////////////////////////////////
+ case 0x03:
+ switch (op & 0x0f)
+ {
+ case 0x00: // CMP/EQ Rm,Rn 0011nnnnmmmm0000
+ case 0x02: // CMP/HS Rm,Rn 0011nnnnmmmm0010
+ case 0x03: // CMP/GE Rm,Rn 0011nnnnmmmm0011
+ case 0x06: // CMP/HI Rm,Rn 0011nnnnmmmm0110
+ case 0x07: // CMP/GT Rm,Rn 0011nnnnmmmm0111
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, T);
+ emith_cmp_r_r(tmp2, tmp3);
+ switch (op & 0x07)
+ {
+ case 0x00: // CMP/EQ
+ emit_or_t_if_eq(sr);
+ break;
+ case 0x02: // CMP/HS
+ EMITH_SJMP_START(DCOND_LO);
+ emith_or_r_imm_c(DCOND_HS, sr, T);
+ EMITH_SJMP_END(DCOND_LO);
+ break;
+ case 0x03: // CMP/GE
+ EMITH_SJMP_START(DCOND_LT);
+ emith_or_r_imm_c(DCOND_GE, sr, T);
+ EMITH_SJMP_END(DCOND_LT);
+ break;
+ case 0x06: // CMP/HI
+ EMITH_SJMP_START(DCOND_LS);
+ emith_or_r_imm_c(DCOND_HI, sr, T);
+ EMITH_SJMP_END(DCOND_LS);
+ break;
+ case 0x07: // CMP/GT
+ EMITH_SJMP_START(DCOND_LE);
+ emith_or_r_imm_c(DCOND_GT, sr, T);
+ EMITH_SJMP_END(DCOND_LE);
+ break;
+ }
+ goto end_op;
+ case 0x04: // DIV1 Rm,Rn 0011nnnnmmmm0100
+ // Q1 = carry(Rn = (Rn << 1) | T)
+ // if Q ^ M
+ // Q2 = carry(Rn += Rm)
+ // else
+ // Q2 = carry(Rn -= Rm)
+ // Q = M ^ Q1 ^ Q2
+ // T = (Q == M) = !(Q ^ M) = !(Q1 ^ Q2)
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_tpop_carry(sr, 0);
+ emith_adcf_r_r(tmp2, tmp2);
+ emith_tpush_carry(sr, 0); // keep Q1 in T for now
+ tmp4 = rcache_get_tmp();
+ emith_and_r_r_imm(tmp4, sr, M);
+ emith_eor_r_r_lsr(sr, tmp4, M_SHIFT - Q_SHIFT); // Q ^= M
+ rcache_free_tmp(tmp4);
+ // add or sub, invert T if carry to get Q1 ^ Q2
+ // in: (Q ^ M) passed in Q, Q1 in T
+ emith_sh2_div1_step(tmp2, tmp3, sr);
+ emith_bic_r_imm(sr, Q);
+ emith_tst_r_imm(sr, M);
+ EMITH_SJMP_START(DCOND_EQ);
+ emith_or_r_imm_c(DCOND_NE, sr, Q); // Q = M
+ EMITH_SJMP_END(DCOND_EQ);
+ emith_tst_r_imm(sr, T);
+ EMITH_SJMP_START(DCOND_EQ);
+ emith_eor_r_imm_c(DCOND_NE, sr, Q); // Q = M ^ Q1 ^ Q2
+ EMITH_SJMP_END(DCOND_EQ);
+ emith_eor_r_imm(sr, T); // T = !(Q1 ^ Q2)
+ goto end_op;
+ case 0x05: // DMULU.L Rm,Rn 0011nnnnmmmm0101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE);
+ tmp4 = rcache_get_reg(SHR_MACH, RC_GR_WRITE);
+ emith_mul_u64(tmp3, tmp4, tmp, tmp2);
+ goto end_op;
+ case 0x08: // SUB Rm,Rn 0011nnnnmmmm1000
+ case 0x0c: // ADD Rm,Rn 0011nnnnmmmm1100
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ if (op & 4) {
+ emith_add_r_r(tmp, tmp2);
+ } else
+ emith_sub_r_r(tmp, tmp2);
+ goto end_op;
+ case 0x0a: // SUBC Rm,Rn 0011nnnnmmmm1010
+ case 0x0e: // ADDC Rm,Rn 0011nnnnmmmm1110
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ if (op & 4) { // adc
+ emith_tpop_carry(sr, 0);
+ emith_adcf_r_r(tmp, tmp2);
+ emith_tpush_carry(sr, 0);
+ } else {
+ emith_tpop_carry(sr, 1);
+ emith_sbcf_r_r(tmp, tmp2);
+ emith_tpush_carry(sr, 1);
}
goto end_op;
+ case 0x0b: // SUBV Rm,Rn 0011nnnnmmmm1011
+ case 0x0f: // ADDV Rm,Rn 0011nnnnmmmm1111
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, T);
+ if (op & 4) {
+ emith_addf_r_r(tmp, tmp2);
+ } else
+ emith_subf_r_r(tmp, tmp2);
+ EMITH_SJMP_START(DCOND_VC);
+ emith_or_r_imm_c(DCOND_VS, sr, T);
+ EMITH_SJMP_END(DCOND_VC);
+ goto end_op;
+ case 0x0d: // DMULS.L Rm,Rn 0011nnnnmmmm1101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ tmp3 = rcache_get_reg(SHR_MACL, RC_GR_WRITE);
+ tmp4 = rcache_get_reg(SHR_MACH, RC_GR_WRITE);
+ emith_mul_s64(tmp3, tmp4, tmp, tmp2);
+ goto end_op;
}
goto default_;
+ /////////////////////////////////////////////
case 0x04:
- switch (op & 0x0f) {
- case 0x07:
- if ((op & 0xf0) != 0)
+ switch (op & 0x0f)
+ {
+ case 0x00:
+ switch (GET_Fx())
+ {
+ case 0: // SHLL Rn 0100nnnn00000000
+ case 2: // SHAL Rn 0100nnnn00100000
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_tpop_carry(sr, 0); // dummy
+ emith_lslf(tmp, tmp, 1);
+ emith_tpush_carry(sr, 0);
+ goto end_op;
+ case 1: // DT Rn 0100nnnn00010000
+ if (p32x_sh2_read16(pc, sh2) == 0x8bfd) { // BF #-2
+ emith_sh2_dtbf_loop();
+ goto end_op;
+ }
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, T);
+ emith_subf_r_imm(tmp, 1);
+ emit_or_t_if_eq(sr);
+ goto end_op;
+ }
+ goto default_;
+ case 0x01:
+ switch (GET_Fx())
+ {
+ case 0: // SHLR Rn 0100nnnn00000001
+ case 2: // SHAR Rn 0100nnnn00100001
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_tpop_carry(sr, 0); // dummy
+ if (op & 0x20) {
+ emith_asrf(tmp, tmp, 1);
+ } else
+ emith_lsrf(tmp, tmp, 1);
+ emith_tpush_carry(sr, 0);
+ goto end_op;
+ case 1: // CMP/PZ Rn 0100nnnn00010001
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, T);
+ emith_cmp_r_imm(tmp, 0);
+ EMITH_SJMP_START(DCOND_LT);
+ emith_or_r_imm_c(DCOND_GE, sr, T);
+ EMITH_SJMP_END(DCOND_LT);
+ goto end_op;
+ }
+ goto default_;
+ case 0x02:
+ case 0x03:
+ switch (op & 0x3f)
+ {
+ case 0x02: // STS.L MACH,@–Rn 0100nnnn00000010
+ tmp = SHR_MACH;
+ break;
+ case 0x12: // STS.L MACL,@–Rn 0100nnnn00010010
+ tmp = SHR_MACL;
+ break;
+ case 0x22: // STS.L PR,@–Rn 0100nnnn00100010
+ tmp = SHR_PR;
+ break;
+ case 0x03: // STC.L SR,@–Rn 0100nnnn00000011
+ tmp = SHR_SR;
+ break;
+ case 0x13: // STC.L GBR,@–Rn 0100nnnn00010011
+ tmp = SHR_GBR;
+ break;
+ case 0x23: // STC.L VBR,@–Rn 0100nnnn00100011
+ tmp = SHR_VBR;
+ break;
+ default:
goto default_;
- // LDC.L @Rm+,SR 0100mmmm00000111
- test_irq = 1;
+ }
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ emith_sub_r_imm(tmp2, 4);
+ rcache_clean();
+ rcache_get_reg_arg(0, GET_Rn());
+ tmp3 = rcache_get_reg_arg(1, tmp);
+ if (tmp == SHR_SR)
+ emith_clear_msb(tmp3, tmp3, 22); // reserved bits defined by ISA as 0
+ emit_memhandler_write(2, pc, drcf.delayed_op);
+ goto end_op;
+ case 0x04:
+ case 0x05:
+ switch (op & 0x3f)
+ {
+ case 0x04: // ROTL Rn 0100nnnn00000100
+ case 0x05: // ROTR Rn 0100nnnn00000101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_tpop_carry(sr, 0); // dummy
+ if (op & 1) {
+ emith_rorf(tmp, tmp, 1);
+ } else
+ emith_rolf(tmp, tmp, 1);
+ emith_tpush_carry(sr, 0);
+ goto end_op;
+ case 0x24: // ROTCL Rn 0100nnnn00100100
+ case 0x25: // ROTCR Rn 0100nnnn00100101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_tpop_carry(sr, 0);
+ if (op & 1) {
+ emith_rorcf(tmp);
+ } else
+ emith_rolcf(tmp);
+ emith_tpush_carry(sr, 0);
+ goto end_op;
+ case 0x15: // CMP/PL Rn 0100nnnn00010101
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, T);
+ emith_cmp_r_imm(tmp, 0);
+ EMITH_SJMP_START(DCOND_LE);
+ emith_or_r_imm_c(DCOND_GT, sr, T);
+ EMITH_SJMP_END(DCOND_LE);
+ goto end_op;
+ }
goto default_;
+ case 0x06:
+ case 0x07:
+ switch (op & 0x3f)
+ {
+ case 0x06: // LDS.L @Rm+,MACH 0100mmmm00000110
+ tmp = SHR_MACH;
+ break;
+ case 0x16: // LDS.L @Rm+,MACL 0100mmmm00010110
+ tmp = SHR_MACL;
+ break;
+ case 0x26: // LDS.L @Rm+,PR 0100mmmm00100110
+ tmp = SHR_PR;
+ break;
+ case 0x07: // LDC.L @Rm+,SR 0100mmmm00000111
+ tmp = SHR_SR;
+ break;
+ case 0x17: // LDC.L @Rm+,GBR 0100mmmm00010111
+ tmp = SHR_GBR;
+ break;
+ case 0x27: // LDC.L @Rm+,VBR 0100mmmm00100111
+ tmp = SHR_VBR;
+ break;
+ default:
+ goto default_;
+ }
+ rcache_clean();
+ rcache_get_reg_arg(0, GET_Rn());
+ tmp2 = emit_memhandler_read(2);
+ if (tmp == SHR_SR) {
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_write_sr(sr, tmp2);
+ drcf.test_irq = 1;
+ } else {
+ tmp = rcache_get_reg(tmp, RC_GR_WRITE);
+ emith_move_r_r(tmp, tmp2);
+ }
+ rcache_free_tmp(tmp2);
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ emith_add_r_imm(tmp, 4);
+ goto end_op;
+ case 0x08:
+ case 0x09:
+ switch (GET_Fx())
+ {
+ case 0:
+ // SHLL2 Rn 0100nnnn00001000
+ // SHLR2 Rn 0100nnnn00001001
+ tmp = 2;
+ break;
+ case 1:
+ // SHLL8 Rn 0100nnnn00011000
+ // SHLR8 Rn 0100nnnn00011001
+ tmp = 8;
+ break;
+ case 2:
+ // SHLL16 Rn 0100nnnn00101000
+ // SHLR16 Rn 0100nnnn00101001
+ tmp = 16;
+ break;
+ default:
+ goto default_;
+ }
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ if (op & 1) {
+ emith_lsr(tmp2, tmp2, tmp);
+ } else
+ emith_lsl(tmp2, tmp2, tmp);
+ goto end_op;
+ case 0x0a:
+ switch (GET_Fx())
+ {
+ case 0: // LDS Rm,MACH 0100mmmm00001010
+ tmp2 = SHR_MACH;
+ break;
+ case 1: // LDS Rm,MACL 0100mmmm00011010
+ tmp2 = SHR_MACL;
+ break;
+ case 2: // LDS Rm,PR 0100mmmm00101010
+ tmp2 = SHR_PR;
+ break;
+ default:
+ goto default_;
+ }
+ emit_move_r_r(tmp2, GET_Rn());
+ goto end_op;
case 0x0b:
- if ((op & 0xd0) != 0)
+ switch (GET_Fx())
+ {
+ case 0: // JSR @Rm 0100mmmm00001011
+ case 2: // JMP @Rm 0100mmmm00101011
+ DELAYED_OP;
+ if (!(op & 0x20))
+ emit_move_r_imm32(SHR_PR, pc + 2);
+ emit_move_r_r(SHR_PC, (op >> 8) & 0x0f);
+ cycles++;
+ break;
+ case 1: // TAS.B @Rn 0100nnnn00011011
+ // XXX: is TAS working on 32X?
+ rcache_clean();
+ rcache_get_reg_arg(0, GET_Rn());
+ tmp = emit_memhandler_read(0);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, T);
+ emith_cmp_r_imm(tmp, 0);
+ emit_or_t_if_eq(sr);
+ rcache_clean();
+ emith_or_r_imm(tmp, 0x80);
+ tmp2 = rcache_get_tmp_arg(1); // assuming it differs to tmp
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ rcache_get_reg_arg(0, GET_Rn());
+ emit_memhandler_write(0, pc, drcf.delayed_op);
+ cycles += 3;
+ break;
+ default:
goto default_;
- // JMP @Rm 0100mmmm00101011
- // JSR @Rm 0100mmmm00001011
- DELAYED_OP;
- if (!(op & 0x20))
- emit_move_r_imm32(SHR_PR, pc + 2);
- emit_move_r_r(SHR_PPC, (op >> 8) & 0x0f);
- cycles++;
+ }
goto end_op;
case 0x0e:
- if ((op & 0xf0) != 0)
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_READ);
+ switch (GET_Fx())
+ {
+ case 0: // LDC Rm,SR 0100mmmm00001110
+ tmp2 = SHR_SR;
+ break;
+ case 1: // LDC Rm,GBR 0100mmmm00011110
+ tmp2 = SHR_GBR;
+ break;
+ case 2: // LDC Rm,VBR 0100mmmm00101110
+ tmp2 = SHR_VBR;
+ break;
+ default:
goto default_;
- // LDC Rm,SR 0100mmmm00001110
- test_irq = 1;
- goto default_;
+ }
+ if (tmp2 == SHR_SR) {
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_write_sr(sr, tmp);
+ drcf.test_irq = 1;
+ } else {
+ tmp2 = rcache_get_reg(tmp2, RC_GR_WRITE);
+ emith_move_r_r(tmp2, tmp);
+ }
+ goto end_op;
+ case 0x0f:
+ // MAC @Rm+,@Rn+ 0100nnnnmmmm1111
+ emit_indirect_read_double(&tmp, &tmp2, GET_Rn(), GET_Rm(), 1);
+ emith_sext(tmp, tmp, 16);
+ emith_sext(tmp2, tmp2, 16);
+ tmp3 = rcache_get_reg(SHR_MACL, RC_GR_RMW);
+ tmp4 = rcache_get_reg(SHR_MACH, RC_GR_RMW);
+ emith_mula_s64(tmp3, tmp4, tmp, tmp2);
+ rcache_free_tmp(tmp2);
+ // XXX: MACH should be untouched when S is set?
+ sr = rcache_get_reg(SHR_SR, RC_GR_READ);
+ emith_tst_r_imm(sr, S);
+ EMITH_JMP_START(DCOND_EQ);
+
+ emith_asr(tmp, tmp3, 31);
+ emith_eorf_r_r(tmp, tmp4); // tmp = ((signed)macl >> 31) ^ mach
+ EMITH_JMP_START(DCOND_EQ);
+ emith_move_r_imm(tmp3, 0x80000000);
+ emith_tst_r_r(tmp4, tmp4);
+ EMITH_SJMP_START(DCOND_MI);
+ emith_sub_r_imm_c(DCOND_PL, tmp3, 1); // positive
+ EMITH_SJMP_END(DCOND_MI);
+ EMITH_JMP_END(DCOND_EQ);
+
+ EMITH_JMP_END(DCOND_EQ);
+ rcache_free_tmp(tmp);
+ cycles += 2;
+ goto end_op;
+ }
+ goto default_;
+
+ /////////////////////////////////////////////
+ case 0x05:
+ // MOV.L @(disp,Rm),Rn 0101nnnnmmmmdddd
+ rcache_clean();
+ tmp = rcache_get_reg_arg(0, GET_Rm());
+ emith_add_r_imm(tmp, (op & 0x0f) * 4);
+ tmp = emit_memhandler_read(2);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ goto end_op;
+
+ /////////////////////////////////////////////
+ case 0x06:
+ switch (op & 0x0f)
+ {
+ case 0x00: // MOV.B @Rm,Rn 0110nnnnmmmm0000
+ case 0x01: // MOV.W @Rm,Rn 0110nnnnmmmm0001
+ case 0x02: // MOV.L @Rm,Rn 0110nnnnmmmm0010
+ case 0x04: // MOV.B @Rm+,Rn 0110nnnnmmmm0100
+ case 0x05: // MOV.W @Rm+,Rn 0110nnnnmmmm0101
+ case 0x06: // MOV.L @Rm+,Rn 0110nnnnmmmm0110
+ rcache_clean();
+ rcache_get_reg_arg(0, GET_Rm());
+ tmp = emit_memhandler_read(op & 3);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ if ((op & 3) != 2) {
+ emith_sext(tmp2, tmp, (op & 1) ? 16 : 8);
+ } else
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ if ((op & 7) >= 4 && GET_Rn() != GET_Rm()) {
+ tmp = rcache_get_reg(GET_Rm(), RC_GR_RMW);
+ emith_add_r_imm(tmp, (1 << (op & 3)));
+ }
+ goto end_op;
+ case 0x03:
+ case 0x07 ... 0x0f:
+ tmp = rcache_get_reg(GET_Rm(), RC_GR_READ);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ switch (op & 0x0f)
+ {
+ case 0x03: // MOV Rm,Rn 0110nnnnmmmm0011
+ emith_move_r_r(tmp2, tmp);
+ break;
+ case 0x07: // NOT Rm,Rn 0110nnnnmmmm0111
+ emith_mvn_r_r(tmp2, tmp);
+ break;
+ case 0x08: // SWAP.B Rm,Rn 0110nnnnmmmm1000
+ tmp3 = tmp2;
+ if (tmp == tmp2)
+ tmp3 = rcache_get_tmp();
+ tmp4 = rcache_get_tmp();
+ emith_lsr(tmp3, tmp, 16);
+ emith_or_r_r_lsl(tmp3, tmp, 24);
+ emith_and_r_r_imm(tmp4, tmp, 0xff00);
+ emith_or_r_r_lsl(tmp3, tmp4, 8);
+ emith_rol(tmp2, tmp3, 16);
+ rcache_free_tmp(tmp4);
+ if (tmp == tmp2)
+ rcache_free_tmp(tmp3);
+ break;
+ case 0x09: // SWAP.W Rm,Rn 0110nnnnmmmm1001
+ emith_rol(tmp2, tmp, 16);
+ break;
+ case 0x0a: // NEGC Rm,Rn 0110nnnnmmmm1010
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_tpop_carry(sr, 1);
+ emith_negcf_r_r(tmp2, tmp);
+ emith_tpush_carry(sr, 1);
+ break;
+ case 0x0b: // NEG Rm,Rn 0110nnnnmmmm1011
+ emith_neg_r_r(tmp2, tmp);
+ break;
+ case 0x0c: // EXTU.B Rm,Rn 0110nnnnmmmm1100
+ emith_clear_msb(tmp2, tmp, 24);
+ break;
+ case 0x0d: // EXTU.W Rm,Rn 0110nnnnmmmm1101
+ emith_clear_msb(tmp2, tmp, 16);
+ break;
+ case 0x0e: // EXTS.B Rm,Rn 0110nnnnmmmm1110
+ emith_sext(tmp2, tmp, 8);
+ break;
+ case 0x0f: // EXTS.W Rm,Rn 0110nnnnmmmm1111
+ emith_sext(tmp2, tmp, 16);
+ break;
+ }
+ goto end_op;
}
goto default_;
+ /////////////////////////////////////////////
+ case 0x07:
+ // ADD #imm,Rn 0111nnnniiiiiiii
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW);
+ if (op & 0x80) { // adding negative
+ emith_sub_r_imm(tmp, -op & 0xff);
+ } else
+ emith_add_r_imm(tmp, op & 0xff);
+ goto end_op;
+
+ /////////////////////////////////////////////
case 0x08:
- switch (op & 0x0f00) {
- // BT/S label 10001101dddddddd
- case 0x0d00:
- // BF/S label 10001111dddddddd
- case 0x0f00:
+ switch (op & 0x0f00)
+ {
+ case 0x0000: // MOV.B R0,@(disp,Rn) 10000000nnnndddd
+ case 0x0100: // MOV.W R0,@(disp,Rn) 10000001nnnndddd
+ rcache_clean();
+ tmp = rcache_get_reg_arg(0, GET_Rm());
+ tmp2 = rcache_get_reg_arg(1, SHR_R0);
+ tmp3 = (op & 0x100) >> 8;
+ emith_add_r_imm(tmp, (op & 0x0f) << tmp3);
+ emit_memhandler_write(tmp3, pc, drcf.delayed_op);
+ goto end_op;
+ case 0x0400: // MOV.B @(disp,Rm),R0 10000100mmmmdddd
+ case 0x0500: // MOV.W @(disp,Rm),R0 10000101mmmmdddd
+ rcache_clean();
+ tmp = rcache_get_reg_arg(0, GET_Rm());
+ tmp3 = (op & 0x100) >> 8;
+ emith_add_r_imm(tmp, (op & 0x0f) << tmp3);
+ tmp = emit_memhandler_read(tmp3);
+ tmp2 = rcache_get_reg(0, RC_GR_WRITE);
+ emith_sext(tmp2, tmp, 8 << tmp3);
+ rcache_free_tmp(tmp);
+ goto end_op;
+ case 0x0800: // CMP/EQ #imm,R0 10001000iiiiiiii
+ // XXX: could use cmn
+ tmp = rcache_get_tmp();
+ tmp2 = rcache_get_reg(0, RC_GR_READ);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_move_r_imm_s8(tmp, op & 0xff);
+ emith_bic_r_imm(sr, T);
+ emith_cmp_r_r(tmp2, tmp);
+ emit_or_t_if_eq(sr);
+ rcache_free_tmp(tmp);
+ goto end_op;
+ case 0x0d00: // BT/S label 10001101dddddddd
+ case 0x0f00: // BF/S label 10001111dddddddd
DELAYED_OP;
cycles--;
// fallthrough
- // BT label 10001001dddddddd
- case 0x0900:
- // BF label 10001011dddddddd
- case 0x0b00:
- tmp = ((signed int)(op << 24) >> 23);
- tmp2 = delayed_op ? SHR_PPC : SHR_PC;
- emit_move_r_imm32(tmp2, pc + (delayed_op ? 2 : 0));
- emith_test_t();
- EMIT_CONDITIONAL(emit_move_r_imm32(tmp2, pc + tmp + 2), (op & 0x0200) ? 1 : 0);
+ case 0x0900: // BT label 10001001dddddddd
+ case 0x0b00: { // BF label 10001011dddddddd
+ // jmp_cond ~ cond when guest doesn't jump
+ int jmp_cond = (op & 0x0200) ? DCOND_NE : DCOND_EQ;
+ int insn_cond = (op & 0x0200) ? DCOND_EQ : DCOND_NE;
+ signed int offs = ((signed int)(op << 24) >> 23);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (find_in_array(branch_target_pc, branch_target_count, pc + offs + 2) >= 0) {
+ branch_patch_pc[branch_patch_count] = pc + offs + 2;
+ branch_patch_cond = insn_cond;
+ goto end_op;
+ }
+
+ // can't resolve branch, cause end of block
+ tmp = rcache_get_reg(SHR_PC, RC_GR_WRITE);
+ emith_move_r_imm(tmp, pc + (drcf.delayed_op ? 2 : 0));
+ emith_tst_r_imm(sr, T);
+ EMITH_SJMP_START(jmp_cond);
+ if (!drcf.delayed_op)
+ offs += 2;
+ if (offs < 0) {
+ emith_sub_r_imm_c(insn_cond, tmp, -offs);
+ } else
+ emith_add_r_imm_c(insn_cond, tmp, offs);
+ EMITH_SJMP_END(jmp_cond);
cycles += 2;
- if (!delayed_op)
- goto end_block;
+ if (!drcf.delayed_op)
+ goto end_block_btf;
goto end_op;
- }
+ }}
goto default_;
+ /////////////////////////////////////////////
+ case 0x09:
+ // MOV.W @(disp,PC),Rn 1001nnnndddddddd
+ rcache_clean();
+ tmp = rcache_get_tmp_arg(0);
+ emith_move_r_imm(tmp, pc + (op & 0xff) * 2 + 2);
+ tmp = emit_memhandler_read(1);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ emith_sext(tmp2, tmp, 16);
+ rcache_free_tmp(tmp);
+ goto end_op;
+
+ /////////////////////////////////////////////
case 0x0a:
// BRA label 1010dddddddddddd
DELAYED_OP;
do_bra:
tmp = ((signed int)(op << 20) >> 19);
- emit_move_r_imm32(SHR_PPC, pc + tmp + 2);
+ emit_move_r_imm32(SHR_PC, pc + tmp + 2);
cycles++;
break;
+ /////////////////////////////////////////////
case 0x0b:
// BSR label 1011dddddddddddd
DELAYED_OP;
emit_move_r_imm32(SHR_PR, pc + 2);
goto do_bra;
+ /////////////////////////////////////////////
+ case 0x0c:
+ switch (op & 0x0f00)
+ {
+ case 0x0000: // MOV.B R0,@(disp,GBR) 11000000dddddddd
+ case 0x0100: // MOV.W R0,@(disp,GBR) 11000001dddddddd
+ case 0x0200: // MOV.L R0,@(disp,GBR) 11000010dddddddd
+ rcache_clean();
+ tmp = rcache_get_reg_arg(0, SHR_GBR);
+ tmp2 = rcache_get_reg_arg(1, SHR_R0);
+ tmp3 = (op & 0x300) >> 8;
+ emith_add_r_imm(tmp, (op & 0xff) << tmp3);
+ emit_memhandler_write(tmp3, pc, drcf.delayed_op);
+ goto end_op;
+ case 0x0400: // MOV.B @(disp,GBR),R0 11000100dddddddd
+ case 0x0500: // MOV.W @(disp,GBR),R0 11000101dddddddd
+ case 0x0600: // MOV.L @(disp,GBR),R0 11000110dddddddd
+ rcache_clean();
+ tmp = rcache_get_reg_arg(0, SHR_GBR);
+ tmp3 = (op & 0x300) >> 8;
+ emith_add_r_imm(tmp, (op & 0xff) << tmp3);
+ tmp = emit_memhandler_read(tmp3);
+ tmp2 = rcache_get_reg(0, RC_GR_WRITE);
+ if (tmp3 != 2) {
+ emith_sext(tmp2, tmp, 8 << tmp3);
+ } else
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ goto end_op;
+ case 0x0300: // TRAPA #imm 11000011iiiiiiii
+ tmp = rcache_get_reg(SHR_SP, RC_GR_RMW);
+ emith_sub_r_imm(tmp, 4*2);
+ rcache_clean();
+ // push SR
+ tmp = rcache_get_reg_arg(0, SHR_SP);
+ emith_add_r_imm(tmp, 4);
+ tmp = rcache_get_reg_arg(1, SHR_SR);
+ emith_clear_msb(tmp, tmp, 22);
+ emit_memhandler_write(2, pc, drcf.delayed_op);
+ // push PC
+ rcache_get_reg_arg(0, SHR_SP);
+ tmp = rcache_get_tmp_arg(1);
+ emith_move_r_imm(tmp, pc);
+ emit_memhandler_write(2, pc, drcf.delayed_op);
+ // obtain new PC
+ tmp = rcache_get_reg_arg(0, SHR_VBR);
+ emith_add_r_imm(tmp, (op & 0xff) * 4);
+ tmp = emit_memhandler_read(2);
+ tmp2 = rcache_get_reg(SHR_PC, RC_GR_WRITE);
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ cycles += 7;
+ goto end_block_btf;
+ case 0x0700: // MOVA @(disp,PC),R0 11000111dddddddd
+ emit_move_r_imm32(SHR_R0, (pc + (op & 0xff) * 4 + 2) & ~3);
+ goto end_op;
+ case 0x0800: // TST #imm,R0 11001000iiiiiiii
+ tmp = rcache_get_reg(SHR_R0, RC_GR_READ);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, T);
+ emith_tst_r_imm(tmp, op & 0xff);
+ emit_or_t_if_eq(sr);
+ goto end_op;
+ case 0x0900: // AND #imm,R0 11001001iiiiiiii
+ tmp = rcache_get_reg(SHR_R0, RC_GR_RMW);
+ emith_and_r_imm(tmp, op & 0xff);
+ goto end_op;
+ case 0x0a00: // XOR #imm,R0 11001010iiiiiiii
+ tmp = rcache_get_reg(SHR_R0, RC_GR_RMW);
+ emith_eor_r_imm(tmp, op & 0xff);
+ goto end_op;
+ case 0x0b00: // OR #imm,R0 11001011iiiiiiii
+ tmp = rcache_get_reg(SHR_R0, RC_GR_RMW);
+ emith_or_r_imm(tmp, op & 0xff);
+ goto end_op;
+ case 0x0c00: // TST.B #imm,@(R0,GBR) 11001100iiiiiiii
+ tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ if (drcf.delayed_op)
+ DELAY_SAVE_T(sr);
+ emith_bic_r_imm(sr, T);
+ emith_tst_r_imm(tmp, op & 0xff);
+ emit_or_t_if_eq(sr);
+ rcache_free_tmp(tmp);
+ cycles += 2;
+ goto end_op;
+ case 0x0d00: // AND.B #imm,@(R0,GBR) 11001101iiiiiiii
+ tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0);
+ emith_and_r_imm(tmp, op & 0xff);
+ goto end_rmw_op;
+ case 0x0e00: // XOR.B #imm,@(R0,GBR) 11001110iiiiiiii
+ tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0);
+ emith_eor_r_imm(tmp, op & 0xff);
+ goto end_rmw_op;
+ case 0x0f00: // OR.B #imm,@(R0,GBR) 11001111iiiiiiii
+ tmp = emit_indirect_indexed_read(SHR_R0, SHR_GBR, 0);
+ emith_or_r_imm(tmp, op & 0xff);
+ end_rmw_op:
+ tmp2 = rcache_get_tmp_arg(1);
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ tmp3 = rcache_get_reg_arg(0, SHR_GBR);
+ tmp4 = rcache_get_reg(SHR_R0, RC_GR_READ);
+ emith_add_r_r(tmp3, tmp4);
+ emit_memhandler_write(0, pc, drcf.delayed_op);
+ cycles += 2;
+ goto end_op;
+ }
+ goto default_;
+
+ /////////////////////////////////////////////
+ case 0x0d:
+ // MOV.L @(disp,PC),Rn 1101nnnndddddddd
+ rcache_clean();
+ tmp = rcache_get_tmp_arg(0);
+ emith_move_r_imm(tmp, (pc + (op & 0xff) * 4 + 2) & ~3);
+ tmp = emit_memhandler_read(2);
+ tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ emith_move_r_r(tmp2, tmp);
+ rcache_free_tmp(tmp);
+ goto end_op;
+
+ /////////////////////////////////////////////
+ case 0x0e:
+ // MOV #imm,Rn 1110nnnniiiiiiii
+ tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE);
+ emith_move_r_imm_s8(tmp, op & 0xff);
+ goto end_op;
+
default:
default_:
+ elprintf(EL_ANOMALY, "%csh2 drc: unhandled op %04x @ %08x",
+ sh2->is_slave ? 's' : 'm', op, pc - 2);
+#ifdef DRC_DEBUG_INTERP
emit_move_r_imm32(SHR_PC, pc - 2);
- emith_pass_arg(2, sh2, op);
+ rcache_flush();
+ emith_pass_arg_r(0, CONTEXT_REG);
+ emith_pass_arg_imm(1, op);
emith_call(sh2_do_op);
+#endif
break;
}
end_op:
- if (delayed_op == 1)
- emit_move_r_r(SHR_PC, SHR_PPC);
-
- if (test_irq && delayed_op != 2) {
- emith_pass_arg(1, sh2);
- emith_call(sh2_test_irq);
- break;
+ // block-local conditional branch handling (with/without delay)
+ if (branch_patch_cond != -1 && drcf.delayed_op != 2) {
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ // handle cycles
+ FLUSH_CYCLES(sr);
+ rcache_clean();
+
+ if (drcf.use_saved_t)
+ emith_tst_r_imm(sr, T_save);
+ else
+ emith_tst_r_imm(sr, T);
+ branch_patch_ptr[branch_patch_count] = tcache_ptr;
+ emith_jump_patchable(branch_patch_cond);
+
+ drcf.use_saved_t = 0;
+ branch_patch_cond = -1;
+ branch_patch_count++;
+ drcf.delayed_op = 0; // XXX: delayed_op ends block, so must override
+ if (branch_patch_count == MAX_LOCAL_BRANCHES) {
+ printf("too many local branches\n");
+ break;
+ }
}
- if (delayed_op == 1)
+ // test irq?
+ // XXX: delay slots..
+ if (drcf.test_irq && drcf.delayed_op != 2) {
+ if (!drcf.delayed_op)
+ emit_move_r_imm32(SHR_PC, pc);
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ FLUSH_CYCLES(sr);
+ rcache_flush();
+ emith_call(sh2_drc_test_irq);
+ drcf.test_irq = 0;
+ }
+ if (drcf.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);
+ // delayed_op means some kind of branch - PC already handled
+ if (!drcf.delayed_op)
+ emit_move_r_imm32(SHR_PC, pc);
+
+end_block_btf:
+ this_block->end_addr = pc;
+
+ tmp = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ FLUSH_CYCLES(tmp);
+ rcache_flush();
+ emith_jump(sh2_drc_dispatcher);
+
+ // link local branches
+ for (i = 0; i < branch_patch_count; i++) {
+ void *target;
+ int t;
+ //printf("patch %08x %p\n", branch_patch_pc[i], branch_patch_ptr[i]);
+ t = find_in_array(branch_target_pc, branch_target_count, branch_patch_pc[i]);
+ if (branch_target_ptr[t] != NULL)
+ target = branch_target_ptr[t];
+ else {
+ // flush pc and go back to dispatcher (for now)
+ printf("stray branch to %08x %p\n", branch_patch_pc[i], tcache_ptr);
+ target = tcache_ptr;
+ emit_move_r_imm32(SHR_PC, branch_patch_pc[i]);
+ rcache_flush();
+ emith_jump(sh2_drc_dispatcher);
+ }
+ emith_jump_patch(branch_patch_ptr[i], target);
}
- if (reg_map_g2h[SHR_SR] == -1) {
- emith_ctx_sub(cycles << 12, SHR_SR * 4);
- } else
- emith_sub_r_imm(reg_map_g2h[SHR_SR], cycles << 12);
- emith_jump(sh2_drc_exit);
+ // mark memory blocks as containing compiled code
+ if (tcache_id != 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;
+ drcblk[tmp] = (blkid_main << 1) | 1;
+ for (++tmp; tmp < tmp2; tmp++) {
+ if (drcblk[tmp])
+ continue; // dont overwrite overlay block(s)
+ drcblk[tmp] = blkid_main << 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_main << 1) | 1;
+ for (++tmp; tmp < tmp2; tmp++) {
+ if (Pico32xMem->drcblk_ram[tmp])
+ continue;
+ Pico32xMem->drcblk_ram[tmp] = blkid_main << 1;
+ }
+ }
-#if (DRC_DEBUG & 2)
- host_dasm(tcache_dsm_ptr, (char *)tcache_ptr - (char *)tcache_dsm_ptr);
- tcache_dsm_ptr = tcache_ptr;
+ tcache_ptrs[tcache_id] = tcache_ptr;
+
+#ifdef ARM
+ cache_flush_d_inval_i(block_entry, 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);
+
+ 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]);
+/*
+ printf("~~~\n");
+ tcache_dsm_ptrs[tcache_id] = block_entry;
+ do_host_disasm(tcache_id);
+ printf("~~~\n");
+*/
+
+#if (DRC_DEBUG & 2)
+ fflush(stdout);
#endif
- return block_entry;
+ 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)
+static void sh2_generate_utils(void)
{
- while (((signed int)sh2->sr >> 12) > 0)
- {
- void *block = NULL;
- block_desc *bd;
+ int arg0, arg1, arg2, sr, tmp;
+ void *sh2_drc_write_end, *sh2_drc_write_slot_end;
+
+ host_arg2reg(arg0, 0);
+ host_arg2reg(arg1, 1);
+ host_arg2reg(arg2, 2);
+ emith_move_r_r(arg0, arg0); // nop
+
+ // sh2_drc_exit(void)
+ sh2_drc_exit = (void *)tcache_ptr;
+ emit_do_static_regs(1, arg2);
+ emith_sh2_drc_exit();
+
+ // sh2_drc_dispatcher(void)
+ sh2_drc_dispatcher = (void *)tcache_ptr;
+ sr = rcache_get_reg(SHR_SR, RC_GR_READ);
+ emith_cmp_r_imm(sr, 0);
+ emith_jump_cond(DCOND_LT, sh2_drc_exit);
+ rcache_invalidate();
+ emith_ctx_read(arg0, SHR_PC * 4);
+ emith_ctx_read(arg1, offsetof(SH2, is_slave));
+ emith_add_r_r_imm(arg2, CONTEXT_REG, offsetof(SH2, drc_tmp));
+ emith_call(lookup_block);
+ emit_block_entry();
+ // lookup failed, call sh2_translate()
+ emith_move_r_r(arg0, CONTEXT_REG);
+ emith_ctx_read(arg1, offsetof(SH2, drc_tmp)); // tcache_id
+ emith_call(sh2_translate);
+ emit_block_entry();
+ // sh2_translate() failed, flush cache and retry
+ emith_ctx_read(arg0, offsetof(SH2, drc_tmp));
+ emith_call(flush_tcache);
+ emith_move_r_r(arg0, CONTEXT_REG);
+ emith_ctx_read(arg1, offsetof(SH2, drc_tmp));
+ emith_call(sh2_translate);
+ emit_block_entry();
+ // XXX: can't translate, fail
+ emith_call(exit);
+
+ // sh2_drc_test_irq(void)
+ // assumes it's called from main function (may jump to dispatcher)
+ sh2_drc_test_irq = (void *)tcache_ptr;
+ emith_ctx_read(arg1, offsetof(SH2, pending_level));
+ sr = rcache_get_reg(SHR_SR, RC_GR_READ);
+ emith_lsr(arg0, sr, I_SHIFT);
+ emith_and_r_imm(arg0, 0x0f);
+ emith_cmp_r_r(arg1, arg0); // pending_level > ((sr >> 4) & 0x0f)?
+ EMITH_SJMP_START(DCOND_GT);
+ emith_ret_c(DCOND_LE); // nope, return
+ EMITH_SJMP_END(DCOND_GT);
+ // adjust SP
+ tmp = rcache_get_reg(SHR_SP, RC_GR_RMW);
+ emith_sub_r_imm(tmp, 4*2);
+ rcache_clean();
+ // push SR
+ tmp = rcache_get_reg_arg(0, SHR_SP);
+ emith_add_r_imm(tmp, 4);
+ tmp = rcache_get_reg_arg(1, SHR_SR);
+ emith_clear_msb(tmp, tmp, 22);
+ emith_move_r_r(arg2, CONTEXT_REG);
+ emith_call(p32x_sh2_write32);
+ rcache_invalidate();
+ // push PC
+ rcache_get_reg_arg(0, SHR_SP);
+ emith_ctx_read(arg1, SHR_PC * 4);
+ emith_move_r_r(arg2, CONTEXT_REG);
+ emith_call(p32x_sh2_write32);
+ rcache_invalidate();
+ // update I, cycles, do callback
+ emith_ctx_read(arg1, offsetof(SH2, pending_level));
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_bic_r_imm(sr, I);
+ emith_or_r_r_lsl(sr, arg1, I_SHIFT);
+ emith_sub_r_imm(sr, 13 << 12); // at least 13 cycles
+ rcache_flush();
+ emith_move_r_r(arg0, CONTEXT_REG);
+ emith_call_ctx(offsetof(SH2, irq_callback)); // vector = sh2->irq_callback(sh2, level);
+ // obtain new PC
+ emith_lsl(arg0, arg0, 2);
+ emith_ctx_read(arg1, SHR_VBR * 4);
+ emith_add_r_r(arg0, arg1);
+ emit_memhandler_read(2);
+ emith_ctx_write(arg0, SHR_PC * 4);
+#ifdef __i386__
+ emith_add_r_imm(xSP, 4); // fix stack
+#endif
+ emith_jump(sh2_drc_dispatcher);
+ rcache_invalidate();
+
+ // sh2_drc_entry(SH2 *sh2)
+ sh2_drc_entry = (void *)tcache_ptr;
+ emith_sh2_drc_entry();
+ emith_move_r_r(CONTEXT_REG, arg0); // move ctx, arg0
+ emit_do_static_regs(0, arg2);
+ emith_call(sh2_drc_test_irq);
+ emith_jump(sh2_drc_dispatcher);
+
+ // write-caused irq detection
+ sh2_drc_write_end = tcache_ptr;
+ emith_tst_r_r(arg0, arg0);
+ EMITH_SJMP_START(DCOND_NE);
+ emith_jump_ctx_c(DCOND_EQ, offsetof(SH2, drc_tmp)); // return
+ EMITH_SJMP_END(DCOND_NE);
+ // since PC is up to date, jump to it's block instead of returning
+ emith_call(sh2_drc_test_irq);
+ emith_jump_ctx(offsetof(SH2, drc_tmp));
+
+ // write-caused irq detection for writes in delay slot
+ sh2_drc_write_slot_end = tcache_ptr;
+ emith_tst_r_r(arg0, arg0);
+ EMITH_SJMP_START(DCOND_NE);
+ emith_jump_ctx_c(DCOND_EQ, offsetof(SH2, drc_tmp));
+ EMITH_SJMP_END(DCOND_NE);
+ // just burn cycles to get back to dispatcher after branch is handled
+ sr = rcache_get_reg(SHR_SR, RC_GR_RMW);
+ emith_ctx_write(sr, offsetof(SH2, irq_cycles));
+ emith_clear_msb(sr, sr, 20); // clear cycles
+ rcache_flush();
+ emith_jump_ctx(offsetof(SH2, drc_tmp));
+
+ // sh2_drc_write8(u32 a, u32 d)
+ sh2_drc_write8 = (void *)tcache_ptr;
+ emith_ret_to_ctx(offsetof(SH2, drc_tmp));
+ emith_ctx_read(arg2, offsetof(SH2, write8_tab));
+ emith_sh2_wcall(arg0, arg2, sh2_drc_write_end);
+
+ // sh2_drc_write16(u32 a, u32 d)
+ sh2_drc_write16 = (void *)tcache_ptr;
+ emith_ret_to_ctx(offsetof(SH2, drc_tmp));
+ emith_ctx_read(arg2, offsetof(SH2, write16_tab));
+ emith_sh2_wcall(arg0, arg2, sh2_drc_write_end);
+
+ // sh2_drc_write8_slot(u32 a, u32 d)
+ sh2_drc_write8_slot = (void *)tcache_ptr;
+ emith_ret_to_ctx(offsetof(SH2, drc_tmp));
+ emith_ctx_read(arg2, offsetof(SH2, write8_tab));
+ emith_sh2_wcall(arg0, arg2, sh2_drc_write_slot_end);
+
+ // sh2_drc_write16_slot(u32 a, u32 d)
+ sh2_drc_write16_slot = (void *)tcache_ptr;
+ emith_ret_to_ctx(offsetof(SH2, drc_tmp));
+ emith_ctx_read(arg2, offsetof(SH2, write16_tab));
+ emith_sh2_wcall(arg0, arg2, sh2_drc_write_slot_end);
+
+ rcache_invalidate();
+#if (DRC_DEBUG & 2)
+ host_dasm_new_symbol(sh2_drc_entry);
+ host_dasm_new_symbol(sh2_drc_dispatcher);
+ host_dasm_new_symbol(sh2_drc_exit);
+ host_dasm_new_symbol(sh2_drc_test_irq);
+ host_dasm_new_symbol(sh2_drc_write_end);
+ host_dasm_new_symbol(sh2_drc_write_slot_end);
+ host_dasm_new_symbol(sh2_drc_write8);
+ host_dasm_new_symbol(sh2_drc_write8_slot);
+ host_dasm_new_symbol(sh2_drc_write16);
+ host_dasm_new_symbol(sh2_drc_write16_slot);
+#endif
+}
- // FIXME: must avoid doing it so often..
- sh2_test_irq(sh2);
+static void sh2_smc_rm_block(u16 *drcblk, u16 *p, block_desc *btab, u32 a)
+{
+ u16 id = *p >> 1;
+ block_desc *bd = btab + id;
- bd = HASH_FUNC(sh2->pc_hashtab, sh2->pc);
+ // FIXME: skip subblocks; do both directions
+ dbg(1, " killing block %08x", bd->addr);
+ bd->addr = bd->end_addr = 0;
- if (bd != NULL) {
- if (bd->addr == sh2->pc)
- block = bd->tcache_ptr;
- else
- block = dr_find_block(bd, sh2->pc);
- }
+ while (p > drcblk && (p[-1] >> 1) == id)
+ p--;
- if (block == NULL)
- block = sh2_translate(sh2, bd);
+ // 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);
+ }
-#if (DRC_DEBUG & 4)
- printf("= %csh2 enter %08x %p\n", sh2->is_slave ? 's' : 'm', sh2->pc, block);
-#endif
- sh2_drc_entry(sh2, block);
+ do {
+ *p++ = 0;
}
+ while ((*p >> 1) == id);
}
-void sh2_execute(SH2 *sh2, int cycles)
+void sh2_drc_wcheck_ram(unsigned int a, int val, int cpuid)
{
- sh2->cycles_aim += cycles;
- cycles = sh2->cycles_aim - sh2->cycles_done;
+ u16 *drcblk = Pico32xMem->drcblk_ram;
+ u16 *p = drcblk + ((a & 0x3ffff) >> SH2_DRCBLK_RAM_SHIFT);
- // cycles are kept in SHR_SR unused bits (upper 20)
- sh2->sr &= 0x3f3;
- sh2->sr |= cycles << 12;
- sh2_drc_dispatcher(sh2);
+ dbg(1, "%csh2 smc check @%08x", cpuid ? 's' : 'm', a);
+ sh2_smc_rm_block(drcblk, p, block_tables[0], a);
+}
- sh2->cycles_done += cycles - ((signed int)sh2->sr >> 12);
+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);
}
-static void __attribute__((regparm(1))) sh2_test_irq(SH2 *sh2)
+void sh2_execute(SH2 *sh2c, int cycles)
{
- if (sh2->pending_level > ((sh2->sr >> 4) & 0x0f))
- {
- if (sh2->pending_irl > sh2->pending_int_irq)
- sh2_do_irq(sh2, sh2->pending_irl, 64 + sh2->pending_irl/2);
- else {
- sh2_do_irq(sh2, sh2->pending_int_irq, sh2->pending_int_vector);
- sh2->pending_int_irq = 0; // auto-clear
- sh2->pending_level = sh2->pending_irl;
+ int ret_cycles;
+ sh2 = sh2c; // XXX
+
+ sh2c->cycles_aim += cycles;
+ cycles = sh2c->cycles_aim - sh2c->cycles_done;
+
+ // cycles are kept in SHR_SR unused bits (upper 20)
+ // bit19 contains T saved for delay slot
+ // others are usual SH2 flags
+ sh2c->sr &= 0x3f3;
+ sh2c->sr |= cycles << 12;
+ sh2_drc_entry(sh2c);
+
+ // TODO: irq cycles
+ ret_cycles = (signed int)sh2c->sr >> 12;
+ if (ret_cycles > 0)
+ printf("warning: drc returned with cycles: %d\n", ret_cycles);
+
+ sh2c->cycles_done += cycles - ret_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;
}
+
+ for (b = 0; b < ARRAY_SIZE(block_tables); b++)
+ for (i = 0; i < block_counts[b]; i++)
+ block_tables[b][i].refcount = 0;
+}
+#else
+#define block_stats()
+#endif
+
+void sh2_drc_flush_all(void)
+{
+ block_stats();
+ flush_tcache(0);
+ flush_tcache(1);
+ flush_tcache(2);
}
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;
+
+ drc_cmn_init();
+
+ 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;
+ sh2_generate_utils();
+#ifdef ARM
+ cache_flush_d_inval_i(tcache, tcache_ptr);
+#endif
+
+ memset(block_counts, 0, sizeof(block_counts));
+ tcache_bases[0] = tcache_ptrs[0] = tcache_ptr;
+
+ 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];
+ }
+
+ // tmp
+ PicoOpt |= POPT_DIS_VDP_FIFO;
+
+#if (DRC_DEBUG & 2)
+ for (i = 0; i < ARRAY_SIZE(block_tables); i++)
+ tcache_dsm_ptrs[i] = tcache_bases[i];
+ // disasm the utils
+ tcache_dsm_ptrs[0] = tcache;
+ do_host_disasm(0);
+#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) {
+ block_stats();
+ free(block_tables[0]);
+ memset(block_tables, 0, sizeof(block_tables));
+
+ drc_cmn_cleanup();
}
- free(sh2->pc_hashtab);
- sh2->pc_hashtab = NULL;
+ if (hash_table != NULL) {
+ free(hash_table);
+ hash_table = NULL;
+ }
}
notaz.gp2x.de / picodrive.git / blobdiff