typedef struct block_desc_ {
u32 addr; // SH2 PC address
+ u32 end_addr; // address after last op
void *tcache_ptr; // translated block for above PC
struct block_desc_ *next; // next block with the same PC hash
#if (DRC_DEBUG & 2)
static int block_counts[TCACHE_BUFFERS];
static int block_link_counts[TCACHE_BUFFERS];
+#define BLOCKID_OVERLAP 0xfffe
+#define BLOCKID_MAX block_max_counts[0]
+
// host register tracking
enum {
HR_FREE,
}
#endif
-static block_desc *dr_add_block(u32 addr, int is_slave, int *blk_id)
+static block_desc *dr_add_block(u32 addr, u32 end_addr, int is_slave, int *blk_id)
{
block_desc *bd;
int tcache_id;
if (bd != NULL) {
dbg(2, "block override for %08x", addr);
bd->tcache_ptr = tcache_ptr;
+ bd->end_addr = end_addr;
*blk_id = bd - block_tables[tcache_id];
return bd;
}
bd = &block_tables[tcache_id][*bcount];
bd->addr = addr;
+ bd->end_addr = end_addr;
bd->tcache_ptr = tcache_ptr;
*blk_id = *bcount;
(*bcount)++;
}
tcache_ptr = tcache_ptrs[tcache_id];
- this_block = dr_add_block(base_pc, sh2->is_slave, &blkid_main);
- if (this_block == NULL)
- return NULL;
// predict tcache overflow
tmp = tcache_ptr - tcache_bases[tcache_id];
return NULL;
}
+ // 1st pass: scan forward for local branches
+ scan_block(base_pc, sh2->is_slave, op_flags, &end_pc);
+
+ this_block = dr_add_block(base_pc, end_pc + MAX_LITERAL_OFFSET, // XXX
+ sh2->is_slave, &blkid_main);
+ if (this_block == NULL)
+ return NULL;
+
block_entry = tcache_ptr;
dbg(2, "== %csh2 block #%d,%d %08x -> %p", sh2->is_slave ? 's' : 'm',
tcache_id, blkid_main, base_pc, block_entry);
dr_link_blocks(tcache_ptr, base_pc, tcache_id);
- // 1st pass: scan forward for local branches
- scan_block(base_pc, sh2->is_slave, op_flags, &end_pc);
-
// collect branch_targets that don't land on delay slots
for (pc = base_pc; pc <= end_pc; pc += 2) {
if (!(OP_FLAGS(pc) & OF_TARGET))
dbg(2, "-- %csh2 subblock #%d,%d %08x -> %p", sh2->is_slave ? 's' : 'm',
tcache_id, branch_target_blkid[i], pc, tcache_ptr);
- subblock = dr_add_block(pc, sh2->is_slave, &branch_target_blkid[i]);
+ subblock = dr_add_block(pc, end_pc + MAX_LITERAL_OFFSET, // XXX
+ sh2->is_slave, &branch_target_blkid[i]);
if (subblock == NULL)
return NULL;
EMITH_JMP_END(DCOND_EQ);
rcache_free_tmp(tmp);
- cycles += 3;
+ cycles += 2;
goto end_op;
}
goto default_;
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_;
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);
+ cycles++;
goto end_op;
case 0x08: // SUB Rm,Rn 0011nnnnmmmm1000
case 0x0c: // ADD Rm,Rn 0011nnnnmmmm1100
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);
+ cycles++;
goto end_op;
}
goto default_;
break;
case 0x03: // STC.L SR,@–Rn 0100nnnn00000011
tmp = SHR_SR;
+ cycles++;
break;
case 0x13: // STC.L GBR,@–Rn 0100nnnn00010011
tmp = SHR_GBR;
+ cycles++;
break;
case 0x23: // STC.L VBR,@–Rn 0100nnnn00100011
tmp = SHR_VBR;
+ cycles++;
break;
default:
goto default_;
break;
case 0x07: // LDC.L @Rm+,SR 0100mmmm00000111
tmp = SHR_SR;
+ cycles += 2;
break;
case 0x17: // LDC.L @Rm+,GBR 0100mmmm00010111
tmp = SHR_GBR;
+ cycles += 2;
break;
case 0x27: // LDC.L @Rm+,VBR 0100mmmm00100111
tmp = SHR_VBR;
+ cycles += 2;
break;
default:
goto default_;
case 0x0d00: // BT/S label 10001101dddddddd
case 0x0f00: // BF/S label 10001111dddddddd
DELAYED_OP;
- cycles--;
// fallthrough
case 0x0900: // BT label 10001001dddddddd
case 0x0b00: // BF label 10001011dddddddd
pending_branch_cond = (op & 0x0200) ? DCOND_EQ : DCOND_NE;
i = ((signed int)(op << 24) >> 23);
pending_branch_pc = pc + i + 2;
- cycles += 2;
goto end_op;
}
goto default_;
if (pending_branch_cond != -1 && drcf.delayed_op != 2)
{
u32 target_pc = pending_branch_pc;
+ int ctaken = drcf.delayed_op ? 1 : 2;
void *target;
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);
+ // handle cycles
+ emith_sub_r_imm_c(pending_branch_cond, sr, ctaken<<12);
+ rcache_clean();
+
#if LINK_BRANCHES
if (find_in_array(branch_target_pc, branch_target_count, target_pc) >= 0) {
// local branch
// override any overlay blocks as they become unreachable anyway
if (tcache_id != 0 || (this_block->addr & 0xc7fc0000) == 0x06000000)
{
- u16 *drc_ram_blk = NULL;
+ u16 *p, *drc_ram_blk = NULL;
u32 mask = 0, shift = 0;
if (tcache_id != 0) {
// data array, BIOS
drc_ram_blk = Pico32xMem->drcblk_da[sh2->is_slave];
shift = SH2_DRCBLK_DA_SHIFT;
- mask = 0xfff;
+ mask = 0xfff/2;
}
else if ((this_block->addr & 0xc7fc0000) == 0x06000000) {
// SDRAM
drc_ram_blk = Pico32xMem->drcblk_ram;
shift = SH2_DRCBLK_RAM_SHIFT;
- mask = 0x3ffff;
+ mask = 0x3ffff/2;
}
drc_ram_blk[(base_pc >> shift) & mask] = (blkid_main << 1) | 1;
- for (pc = base_pc + 2; pc < end_pc; pc += 2)
- drc_ram_blk[(pc >> shift) & mask] = blkid_main << 1;
+ for (pc = base_pc + 2; pc < end_pc; pc += 2) {
+ p = &drc_ram_blk[(pc >> shift) & mask];
+ if (*p && *p != (blkid_main << 1))
+ *p = BLOCKID_OVERLAP; // block intersection..
+ else
+ *p = blkid_main << 1;
+ }
- // mark subblocks
+ // mark block entries (used by dr_get_bd())
for (i = 0; i < branch_target_count; i++)
if (branch_target_blkid[i] != 0)
drc_ram_blk[(branch_target_pc[i] >> shift) & mask] =
// mark literals
for (i = 0; i < literal_addr_count; i++) {
tmp = literal_addr[i];
- drc_ram_blk[(tmp >> shift) & mask] = blkid_main << 1;
- if (!(tmp & 3)) // assume long
- drc_ram_blk[((tmp + 2) >> shift) & mask] = blkid_main << 1;
+ p = &drc_ram_blk[(tmp >> shift) & mask];
+ if (*p && *p != (blkid_main << 1))
+ *p = BLOCKID_OVERLAP;
+ else
+ *p = blkid_main << 1;
+ if (!(tmp & 3) && shift == 1)
+ p[1] = p[0]; // assume long
}
}
#endif
}
-static void *sh2_smc_rm_block_entry(block_desc *bd, int tcache_id)
+static void sh2_smc_rm_block_entry(block_desc *bd, int tcache_id)
{
void *tmp;
// XXX: kill links somehow?
- dbg(2, " killing entry %08x, blkid %d", bd->addr, bd - block_tables[tcache_id]);
+ dbg(2, " killing entry %08x-%08x, blkid %d,%d",
+ bd->addr, bd->end_addr, tcache_id, bd - block_tables[tcache_id]);
if (bd->addr == 0 || bd->tcache_ptr == NULL) {
dbg(1, " killing dead block!? %08x", bd->addr);
- return bd->tcache_ptr;
+ return;
}
// since we never reuse space of dead blocks,
emit_move_r_imm32(SHR_PC, bd->addr);
rcache_flush();
emith_jump(sh2_drc_dispatcher);
+
+ host_instructions_updated(bd->tcache_ptr, tcache_ptr);
tcache_ptr = tmp;
- bd->addr = 0;
- return bd->tcache_ptr;
+ bd->addr = bd->end_addr = 0;
}
static void sh2_smc_rm_block(u32 a, u16 *drc_ram_blk, int tcache_id, u32 shift, u32 mask)
{
- //block_link *bl = block_links[tcache_id];
- //int bl_count = block_link_counts[tcache_id];
block_desc *btab = block_tables[tcache_id];
u16 *p = drc_ram_blk + ((a & mask) >> shift);
u16 *pmax = drc_ram_blk + (mask >> shift);
- void *tcache_min, *tcache_max;
- int zeros;
- u16 *pt;
-
- // Figure out what the main block is, as subblocks also have the flag set.
- // This relies on sub having single entry. It's possible that innocent
- // block might be hit, but that's not such a big deal.
- if ((p[0] >> 1) != (p[1] >> 1)) {
- for (; p > drc_ram_blk; p--)
- if (p[-1] == 0 || (p[-1] >> 1) == (*p >> 1))
- break;
+ u32 id = ~0, end_addr;
+ int max_zeros = MAX_LITERAL_OFFSET >> shift;
+ int i, zeros;
+
+ if (*p == 0 || (*p >> 1) >= BLOCKID_MAX) {
+ u32 from = ~0, to = 0;
+ dbg(1, "slow-remove blocks at @%08x", a);
+ for (i = 0; i < block_counts[tcache_id]; i++) {
+ if (btab[i].addr <= a && a < btab[i].end_addr) {
+ if (btab[i].addr < from)
+ from = btab[i].addr;
+ if (btab[i].end_addr > to)
+ to = btab[i].end_addr;
+ sh2_smc_rm_block_entry(&btab[i], tcache_id);
+ }
+ }
+ if (from < to) {
+ p = drc_ram_blk + ((from & mask) >> shift);
+ memset(p, 0, (to - from) >> (shift - 1));
+ }
+ return;
}
- pt = p;
- for (; p > drc_ram_blk; p--)
- if ((*p & 1))
- break;
+ // use end_addr to distinguish the same block
+ end_addr = btab[*p >> 1].end_addr;
- if (!(*p & 1)) {
- dbg(1, "smc rm: missing block start for %08x?", a);
- p = pt;
+ // go up to the start
+ for (zeros = 0; p > drc_ram_blk && zeros < max_zeros; p--) {
+ // there can be holes because games sometimes keep variables
+ // directly in literal pool and we don't inline them
+ // to avoid recompile (Star Wars Arcade)
+ if (p[-1] == 0) {
+ zeros++;
+ continue;
+ }
+ zeros = 0;
+ if ((p[-1] >> 1) >= BLOCKID_MAX)
+ break;
+ if (btab[p[-1] >> 1].end_addr != end_addr)
+ break;
}
- if (*p == 0)
- return;
-
- tcache_min = tcache_max = sh2_smc_rm_block_entry(&btab[*p >> 1], tcache_id);
- *p = 0;
+ if (!(*p & 1))
+ dbg(1, "smc rm: missing block start for %08x?", a);
- for (p++, zeros = 0; p < pmax && zeros < MAX_LITERAL_OFFSET / 2; p++) {
- int id = *p >> 1;
- if (id == 0) {
- // there can be holes because games sometimes keep variables
- // directly in literal pool and we don't inline them to avoid recompile
- // (Star Wars Arcade)
+ // now go down and kill everything
+ for (zeros = 0; p < pmax && zeros < max_zeros; p++) {
+ if (*p == 0) {
zeros++;
continue;
}
- if (*p & 1) {
- if (id == (p[1] >> 1))
- // hit other block
- break;
- tcache_max = sh2_smc_rm_block_entry(&btab[id], tcache_id);
+ zeros = 0;
+ if ((*p >> 1) >= BLOCKID_MAX)
+ break;
+ if ((*p >> 1) == id) {
+ *p = 0;
+ continue;
}
+ id = *p >> 1;
+ if (btab[id].end_addr != end_addr)
+ break;
*p = 0;
+ sh2_smc_rm_block_entry(&btab[id], tcache_id);
}
-
- host_instructions_updated(tcache_min, (void *)((char *)tcache_max + 4*4 + 4));
}
void sh2_drc_wcheck_ram(unsigned int a, int val, int cpuid)
*end_pc = pc;
}
-// vim:shiftwidth=2:expandtab
+// vim:shiftwidth=2:ts=2:expandtab
notaz.gp2x.de / picodrive.git / blobdiff