static void rec_REGIMM(struct lightrec_cstate *state, const struct block *block, u16 offset);
static void rec_CP0(struct lightrec_cstate *state, const struct block *block, u16 offset);
static void rec_CP2(struct lightrec_cstate *state, const struct block *block, u16 offset);
+static void rec_META(struct lightrec_cstate *state, const struct block *block, u16 offset);
+static void rec_cp2_do_mtc2(struct lightrec_cstate *state,
+ const struct block *block, u16 offset, u8 reg, u8 in_reg);
+static void rec_cp2_do_mfc2(struct lightrec_cstate *state,
+ const struct block *block, u16 offset,
+ u8 reg, u8 out_reg);
static void unknown_opcode(struct lightrec_cstate *state, const struct block *block, u16 offset)
{
}
static void
-lightrec_jump_to_eob(struct lightrec_cstate *state, jit_state_t *_jit)
+lightrec_jump_to_fn(jit_state_t *_jit, void (*fn)(void))
{
/* Prevent jit_jmpi() from using our cycles register as a temporary */
jit_live(LIGHTREC_REG_CYCLE);
- jit_patch_abs(jit_jmpi(), state->state->eob_wrapper_func);
+ jit_patch_abs(jit_jmpi(), fn);
+}
+
+static void
+lightrec_jump_to_eob(struct lightrec_cstate *state, jit_state_t *_jit)
+{
+ lightrec_jump_to_fn(_jit, state->state->eob_wrapper_func);
+}
+
+static void
+lightrec_jump_to_ds_check(struct lightrec_cstate *state, jit_state_t *_jit)
+{
+ lightrec_jump_to_fn(_jit, state->state->ds_check_func);
+}
+
+static void update_ra_register(struct regcache *reg_cache, jit_state_t *_jit,
+ u8 ra_reg, u32 pc, u32 link)
+{
+ u8 link_reg;
+
+ link_reg = lightrec_alloc_reg_out(reg_cache, _jit, ra_reg, 0);
+ lightrec_load_imm(reg_cache, _jit, link_reg, pc, link);
+ lightrec_free_reg(reg_cache, link_reg);
}
static void lightrec_emit_end_of_block(struct lightrec_cstate *state,
struct regcache *reg_cache = state->reg_cache;
jit_state_t *_jit = block->_jit;
const struct opcode *op = &block->opcode_list[offset],
- *next = &block->opcode_list[offset + 1];
+ *ds = get_delay_slot(block->opcode_list, offset);
u32 cycles = state->cycles + lightrec_cycles_of_opcode(op->c);
jit_note(__FILE__, __LINE__);
- if (link) {
- /* Update the $ra register */
- u8 link_reg = lightrec_alloc_reg_out(reg_cache, _jit, ra_reg, 0);
- jit_movi(link_reg, link);
- lightrec_free_reg(reg_cache, link_reg);
- }
+ if (link && ra_reg != reg_new_pc)
+ update_ra_register(reg_cache, _jit, ra_reg, block->pc, link);
- if (reg_new_pc < 0) {
- reg_new_pc = lightrec_alloc_reg(reg_cache, _jit, JIT_V0);
- lightrec_lock_reg(reg_cache, _jit, reg_new_pc);
+ if (reg_new_pc < 0)
+ lightrec_load_next_pc_imm(reg_cache, _jit, block->pc, imm);
+ else
+ lightrec_load_next_pc(reg_cache, _jit, reg_new_pc);
- jit_movi(reg_new_pc, imm);
+ if (link && ra_reg == reg_new_pc) {
+ /* Handle the special case: JALR $r0, $r0
+ * In that case the target PC should be the old value of the
+ * register. */
+ update_ra_register(reg_cache, _jit, ra_reg, block->pc, link);
}
if (has_delay_slot(op->c) &&
!op_flag_no_ds(op->flags) && !op_flag_local_branch(op->flags)) {
- cycles += lightrec_cycles_of_opcode(next->c);
+ cycles += lightrec_cycles_of_opcode(ds->c);
/* Recompile the delay slot */
- if (next->c.opcode)
+ if (ds->c.opcode)
lightrec_rec_opcode(state, block, offset + 1);
}
/* Clean the remaining registers */
lightrec_clean_regs(reg_cache, _jit);
- jit_movr(JIT_V0, reg_new_pc);
-
if (cycles && update_cycles) {
jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, cycles);
pr_debug("EOB: %u cycles\n", cycles);
}
- lightrec_jump_to_eob(state, _jit);
+ if (op_flag_load_delay(ds->flags)
+ && opcode_is_load(ds->c) && !state->no_load_delay) {
+ /* If the delay slot is a load opcode, its target register
+ * will be written after the first opcode of the target is
+ * executed. Handle this by jumping to a special section of
+ * the dispatcher. It expects the loaded value to be in
+ * REG_TEMP, and the target register number to be in JIT_V1.*/
+ jit_movi(JIT_V1, ds->c.i.rt);
+
+ lightrec_jump_to_ds_check(state, _jit);
+ } else {
+ lightrec_jump_to_eob(state, _jit);
+ }
+
+ lightrec_regcache_reset(reg_cache);
}
-void lightrec_emit_eob(struct lightrec_cstate *state,
- const struct block *block, u16 offset)
+void lightrec_emit_jump_to_interpreter(struct lightrec_cstate *state,
+ const struct block *block, u16 offset)
{
struct regcache *reg_cache = state->reg_cache;
jit_state_t *_jit = block->_jit;
lightrec_clean_regs(reg_cache, _jit);
- jit_movi(JIT_V0, block->pc + (offset << 2));
- jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, state->cycles);
+ /* Call the interpreter with the block's address in JIT_V1 and the
+ * PC (which might have an offset) in JIT_V0. */
+ lightrec_load_imm(reg_cache, _jit, JIT_V0, block->pc,
+ block->pc + (offset << 2));
+ if (lightrec_store_next_pc()) {
+ jit_stxi_i(offsetof(struct lightrec_state, next_pc),
+ LIGHTREC_REG_STATE, JIT_V0);
+ }
- lightrec_jump_to_eob(state, _jit);
+ jit_movi(JIT_V1, (uintptr_t)block);
+
+ jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, state->cycles);
+ lightrec_jump_to_fn(_jit, state->state->interpreter_func);
}
-static u8 get_jr_jalr_reg(struct lightrec_cstate *state, const struct block *block, u16 offset)
+static void lightrec_emit_eob(struct lightrec_cstate *state,
+ const struct block *block, u16 offset)
{
struct regcache *reg_cache = state->reg_cache;
jit_state_t *_jit = block->_jit;
- const struct opcode *op = &block->opcode_list[offset];
- u8 rs;
- rs = lightrec_request_reg_in(reg_cache, _jit, op->r.rs, JIT_V0);
- lightrec_lock_reg(reg_cache, _jit, rs);
+ lightrec_clean_regs(reg_cache, _jit);
+
+ lightrec_load_imm(reg_cache, _jit, JIT_V0, block->pc,
+ block->pc + (offset << 2));
+ if (lightrec_store_next_pc()) {
+ jit_stxi_i(offsetof(struct lightrec_state, next_pc),
+ LIGHTREC_REG_STATE, JIT_V0);
+ }
+
+ jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, state->cycles);
- return rs;
+ lightrec_jump_to_eob(state, _jit);
}
static void rec_special_JR(struct lightrec_cstate *state, const struct block *block, u16 offset)
{
- u8 rs = get_jr_jalr_reg(state, block, offset);
+ union code c = block->opcode_list[offset].c;
_jit_name(block->_jit, __func__);
- lightrec_emit_end_of_block(state, block, offset, rs, 0, 31, 0, true);
+ lightrec_emit_end_of_block(state, block, offset, c.r.rs, 0, 31, 0, true);
}
static void rec_special_JALR(struct lightrec_cstate *state, const struct block *block, u16 offset)
{
- u8 rs = get_jr_jalr_reg(state, block, offset);
union code c = block->opcode_list[offset].c;
_jit_name(block->_jit, __func__);
- lightrec_emit_end_of_block(state, block, offset, rs, 0, c.r.rd,
+ lightrec_emit_end_of_block(state, block, offset, c.r.rs, 0, c.r.rd,
get_branch_pc(block, offset, 2), true);
}
jit_state_t *_jit = block->_jit;
struct lightrec_branch *branch;
const struct opcode *op = &block->opcode_list[offset],
- *next = &block->opcode_list[offset + 1];
+ *ds = get_delay_slot(block->opcode_list, offset);
jit_node_t *addr;
- u8 link_reg, rs, rt;
- bool is_forward = (s16)op->i.imm >= -1;
+ bool is_forward = (s16)op->i.imm >= 0;
int op_cycles = lightrec_cycles_of_opcode(op->c);
u32 target_offset, cycles = state->cycles + op_cycles;
bool no_indirection = false;
u32 next_pc;
+ u8 rs, rt;
jit_note(__FILE__, __LINE__);
if (!op_flag_no_ds(op->flags))
- cycles += lightrec_cycles_of_opcode(next->c);
+ cycles += lightrec_cycles_of_opcode(ds->c);
state->cycles = -op_cycles;
lightrec_do_early_unload(state, block, offset);
if (op_flag_local_branch(op->flags) &&
- (op_flag_no_ds(op->flags) || !next->opcode) &&
+ (op_flag_no_ds(op->flags) || !ds->opcode) &&
is_forward && !lightrec_has_dirty_regs(reg_cache))
no_indirection = true;
if (op_flag_local_branch(op->flags)) {
/* Recompile the delay slot */
- if (!op_flag_no_ds(op->flags) && next->opcode)
+ if (!op_flag_no_ds(op->flags) && ds->opcode) {
+ /* Never handle load delays with local branches. */
+ state->no_load_delay = true;
lightrec_rec_opcode(state, block, offset + 1);
-
- if (link) {
- /* Update the $ra register */
- link_reg = lightrec_alloc_reg_out(reg_cache, _jit, 31, 0);
- jit_movi(link_reg, link);
- lightrec_free_reg(reg_cache, link_reg);
}
+ if (link)
+ update_ra_register(reg_cache, _jit, 31, block->pc, link);
+
/* Clean remaining registers */
lightrec_clean_regs(reg_cache, _jit);
if (!op_flag_local_branch(op->flags) || !is_forward) {
next_pc = get_branch_pc(block, offset, 1 + (s16)op->i.imm);
+ state->no_load_delay = op_flag_local_branch(op->flags);
lightrec_emit_end_of_block(state, block, offset, -1, next_pc,
31, link, false);
}
lightrec_regcache_leave_branch(reg_cache, regs_backup);
- if (bz && link) {
- /* Update the $ra register */
- link_reg = lightrec_alloc_reg_out(reg_cache, _jit,
- 31, REG_EXT);
- jit_movi(link_reg, (s32)link);
- lightrec_free_reg(reg_cache, link_reg);
- }
+ if (bz && link)
+ update_ra_register(reg_cache, _jit, 31, block->pc, link);
- if (!op_flag_no_ds(op->flags) && next->opcode)
+ if (!op_flag_no_ds(op->flags) && ds->opcode) {
+ state->no_load_delay = true;
lightrec_rec_opcode(state, block, offset + 1);
+ }
}
}
if (!op_flag_no_lo(flags)) {
if (is_signed) {
- jit_lti(lo, rs, 0);
+ jit_ltr(lo, rs, rt);
jit_lshi(lo, lo, 1);
jit_subi(lo, lo, 1);
} else {
- jit_movi(lo, 0xffffffff);
+ jit_subi(lo, rt, 1);
}
}
u32 flags = block->opcode_list[offset].flags;
bool is_tagged = LIGHTREC_FLAGS_GET_IO_MODE(flags);
u32 lut_entry;
+ u8 zero;
jit_note(__FILE__, __LINE__);
else if (load_rt)
lightrec_clean_reg_if_loaded(reg_cache, _jit, c.i.rt, false);
+ if (op_flag_load_delay(flags) && !state->no_load_delay) {
+ /* Clear state->in_delay_slot_n. This notifies the lightrec_rw
+ * wrapper that it should write the REG_TEMP register instead of
+ * the actual output register of the opcode. */
+ zero = lightrec_alloc_reg_in(reg_cache, _jit, 0, 0);
+ jit_stxi_c(offsetof(struct lightrec_state, in_delay_slot_n),
+ LIGHTREC_REG_STATE, zero);
+ lightrec_free_reg(reg_cache, zero);
+ }
+
if (is_tagged) {
call_to_c_wrapper(state, block, c.opcode, C_WRAPPER_RW);
} else {
{
u32 length = state->maps[PSX_MAP_HW_REGISTERS].length;
- return GENMASK(31 - clz32(length - 1), 0);
+ return 0x1f800000 | GENMASK(31 - clz32(length - 1), 0);
}
static void rec_store_memory(struct lightrec_cstate *cstate,
((!state->mirrors_mapped && !no_mask) || (invalidate &&
((imm & 0x3) || simm + lut_offt != (s16)(simm + lut_offt))));
bool need_tmp = !no_mask || addr_offset || add_imm || invalidate;
+ bool swc2 = c.i.op == OP_SWC2;
+ u8 in_reg = swc2 ? REG_TEMP : c.i.rt;
- rt = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rt, 0);
+ rt = lightrec_alloc_reg_in(reg_cache, _jit, in_reg, 0);
rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
if (need_tmp)
tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
if (add_imm) {
jit_addi(tmp, addr_reg, (s16)c.i.imm);
+ lightrec_free_reg(reg_cache, rs);
addr_reg = tmp;
imm = 0;
} else if (simm) {
addr_reg2 = addr_reg;
}
- if (is_big_endian() && swap_code && c.i.rt) {
+ if (is_big_endian() && swap_code && in_reg) {
tmp3 = lightrec_alloc_reg_temp(reg_cache, _jit);
jit_new_node_ww(swap_code, tmp3, rt);
if (addr_reg == rs && c.i.rs == 0) {
addr_reg = LIGHTREC_REG_STATE;
} else {
- jit_addr(tmp, addr_reg, LIGHTREC_REG_STATE);
+ jit_add_state(tmp, addr_reg);
addr_reg = tmp;
}
union code c = block->opcode_list[offset].c;
jit_state_t *_jit = block->_jit;
jit_node_t *to_not_ram, *to_end;
- u8 tmp, tmp2, rs, rt;
+ bool swc2 = c.i.op == OP_SWC2;
+ bool offset_ram_or_scratch = state->offset_ram || state->offset_scratch;
+ u8 tmp, tmp2, rs, rt, in_reg = swc2 ? REG_TEMP : c.i.rt;
s16 imm;
jit_note(__FILE__, __LINE__);
rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
- if (state->offset_ram || state->offset_scratch)
+ if (offset_ram_or_scratch)
tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit);
/* Convert to KUNSEG and avoid RAM mirrors */
jit_movi(tmp2, state->offset_ram);
}
- if (state->offset_ram || state->offset_scratch) {
+ if (offset_ram_or_scratch) {
jit_addr(tmp, tmp, tmp2);
lightrec_free_reg(reg_cache, tmp2);
}
- rt = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rt, 0);
+ rt = lightrec_alloc_reg_in(reg_cache, _jit, in_reg, 0);
- if (is_big_endian() && swap_code && c.i.rt) {
+ if (is_big_endian() && swap_code && in_reg) {
tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit);
jit_new_node_ww(swap_code, tmp2, rt);
union code c = block->opcode_list[offset].c;
jit_state_t *_jit = block->_jit;
jit_node_t *to_not_ram, *to_end;
- u8 tmp, tmp2, tmp3, rs, rt;
+ bool swc2 = c.i.op == OP_SWC2;
+ u8 tmp, tmp2, tmp3, masked_reg, rs, rt;
+ u8 in_reg = swc2 ? REG_TEMP : c.i.rt;
jit_note(__FILE__, __LINE__);
lightrec_free_reg(reg_cache, rs);
tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
- to_not_ram = jit_bgti(tmp2, ram_size);
+ if (state->offset_ram != state->offset_scratch) {
+ to_not_ram = jit_bgti(tmp2, ram_size);
+ masked_reg = tmp2;
+ } else {
+ jit_lti_u(tmp, tmp2, ram_size);
+ jit_movnr(tmp, tmp2, tmp);
+ masked_reg = tmp;
+ }
/* Compute the offset to the code LUT */
- jit_andi(tmp, tmp2, (RAM_SIZE - 1) & ~3);
+ if (c.i.op == OP_SW)
+ jit_andi(tmp, masked_reg, RAM_SIZE - 1);
+ else
+ jit_andi(tmp, masked_reg, (RAM_SIZE - 1) & ~3);
+
if (!lut_is_32bit(state))
jit_lshi(tmp, tmp, 1);
- jit_addr(tmp, LIGHTREC_REG_STATE, tmp);
+ jit_add_state(tmp, tmp);
/* Write NULL to the code LUT to invalidate any block that's there */
if (lut_is_32bit(state))
jit_movi(tmp, state->offset_ram);
to_end = jit_b();
+ jit_patch(to_not_ram);
}
- jit_patch(to_not_ram);
-
if (state->offset_ram || state->offset_scratch)
jit_movi(tmp, state->offset_scratch);
lightrec_free_reg(reg_cache, tmp);
lightrec_free_reg(reg_cache, tmp3);
- rt = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rt, 0);
+ rt = lightrec_alloc_reg_in(reg_cache, _jit, in_reg, 0);
- if (is_big_endian() && swap_code && c.i.rt) {
+ if (is_big_endian() && swap_code && in_reg) {
tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
jit_new_node_ww(swap_code, tmp, rt);
jit_code_t code, jit_code_t swap_code)
{
u32 flags = block->opcode_list[offset].flags;
+ u32 mode = LIGHTREC_FLAGS_GET_IO_MODE(flags);
bool no_invalidate = op_flag_no_invalidate(flags) ||
state->state->invalidate_from_dma_only;
+ union code c = block->opcode_list[offset].c;
+ bool is_swc2 = c.i.op == OP_SWC2;
+
+ if (is_swc2) {
+ switch (mode) {
+ case LIGHTREC_IO_RAM:
+ case LIGHTREC_IO_SCRATCH:
+ case LIGHTREC_IO_DIRECT:
+ case LIGHTREC_IO_DIRECT_HW:
+ rec_cp2_do_mfc2(state, block, offset, c.i.rt, REG_TEMP);
+ break;
+ default:
+ break;
+ }
+ }
- switch (LIGHTREC_FLAGS_GET_IO_MODE(flags)) {
+ switch (mode) {
case LIGHTREC_IO_RAM:
rec_store_ram(state, block, offset, code,
swap_code, !no_invalidate);
break;
default:
rec_io(state, block, offset, true, false);
- break;
+ return;
}
+
+ if (is_swc2)
+ lightrec_discard_reg_if_loaded(state->reg_cache, REG_TEMP);
}
static void rec_SB(struct lightrec_cstate *state,
const struct block *block, u16 offset)
{
- _jit_name(block->_jit, __func__);
+ union code c = block->opcode_list[offset].c;
+
+ _jit_name(block->_jit, c.i.op == OP_SWC2 ? "rec_SWC2" : "rec_SW");
rec_store(state, block, offset,
jit_code_stxi_i, jit_code_bswapr_ui);
}
rec_io(state, block, offset, true, false);
}
-static void rec_SWC2(struct lightrec_cstate *state,
- const struct block *block, u16 offset)
-{
- _jit_name(block->_jit, __func__);
- rec_io(state, block, offset, false, false);
-}
-
static void rec_load_memory(struct lightrec_cstate *cstate,
const struct block *block, u16 offset,
jit_code_t code, jit_code_t swap_code, bool is_unsigned,
{
struct regcache *reg_cache = cstate->reg_cache;
struct opcode *op = &block->opcode_list[offset];
+ bool load_delay = op_flag_load_delay(op->flags) && !cstate->no_load_delay;
jit_state_t *_jit = block->_jit;
- u8 rs, rt, addr_reg, flags = REG_EXT;
+ u8 rs, rt, out_reg, addr_reg, flags = REG_EXT;
bool no_mask = op_flag_no_mask(op->flags);
union code c = op->c;
s16 imm;
- if (!c.i.rt)
+ if (load_delay || c.i.op == OP_LWC2)
+ out_reg = REG_TEMP;
+ else if (c.i.rt)
+ out_reg = c.i.rt;
+ else
return;
if (is_unsigned)
flags |= REG_ZEXT;
rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
- rt = lightrec_alloc_reg_out(reg_cache, _jit, c.i.rt, flags);
+ rt = lightrec_alloc_reg_out(reg_cache, _jit, out_reg, flags);
if (!cstate->state->mirrors_mapped && c.i.imm && !no_mask) {
jit_addi(rt, rs, (s16)c.i.imm);
{
struct lightrec_state *state = cstate->state;
struct regcache *reg_cache = cstate->reg_cache;
- union code c = block->opcode_list[offset].c;
+ struct opcode *op = &block->opcode_list[offset];
+ bool load_delay = op_flag_load_delay(op->flags) && !cstate->no_load_delay;
jit_state_t *_jit = block->_jit;
jit_node_t *to_not_ram, *to_not_bios, *to_end, *to_end2;
- u8 tmp, rs, rt, addr_reg, flags = REG_EXT;
+ u8 tmp, rs, rt, out_reg, addr_reg, flags = REG_EXT;
+ union code c = op->c;
s16 imm;
- if (!c.i.rt)
+ if (load_delay || c.i.op == OP_LWC2)
+ out_reg = REG_TEMP;
+ else if (c.i.rt)
+ out_reg = c.i.rt;
+ else
return;
if (is_unsigned)
jit_note(__FILE__, __LINE__);
rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
- rt = lightrec_alloc_reg_out(reg_cache, _jit, c.i.rt, flags);
+ rt = lightrec_alloc_reg_out(reg_cache, _jit, out_reg, flags);
if ((state->offset_ram == state->offset_bios &&
state->offset_ram == state->offset_scratch &&
u16 offset, jit_code_t code, jit_code_t swap_code,
bool is_unsigned)
{
- u32 flags = block->opcode_list[offset].flags;
+ const struct opcode *op = &block->opcode_list[offset];
+ u32 flags = op->flags;
switch (LIGHTREC_FLAGS_GET_IO_MODE(flags)) {
case LIGHTREC_IO_RAM:
break;
default:
rec_io(state, block, offset, false, true);
- break;
+ return;
+ }
+
+ if (op->i.op == OP_LWC2) {
+ rec_cp2_do_mtc2(state, block, offset, op->i.rt, REG_TEMP);
+ lightrec_discard_reg_if_loaded(state->reg_cache, REG_TEMP);
}
}
static void rec_LW(struct lightrec_cstate *state, const struct block *block, u16 offset)
{
+ union code c = block->opcode_list[offset].c;
jit_code_t code;
if (is_big_endian() && __WORDSIZE == 64)
else
code = jit_code_ldxi_i;
- _jit_name(block->_jit, __func__);
+ _jit_name(block->_jit, c.i.op == OP_LWC2 ? "rec_LWC2" : "rec_LW");
rec_load(state, block, offset, code, jit_code_bswapr_ui, false);
}
-static void rec_LWC2(struct lightrec_cstate *state, const struct block *block, u16 offset)
-{
- _jit_name(block->_jit, __func__);
- rec_io(state, block, offset, false, false);
-}
-
static void rec_break_syscall(struct lightrec_cstate *state,
const struct block *block, u16 offset,
u32 exit_code)
jit_stxi_i(offsetof(struct lightrec_state, exit_flags),
LIGHTREC_REG_STATE, tmp);
+ jit_ldxi_i(tmp, LIGHTREC_REG_STATE,
+ offsetof(struct lightrec_state, target_cycle));
+ jit_subr(tmp, tmp, LIGHTREC_REG_CYCLE);
+ jit_movi(LIGHTREC_REG_CYCLE, 0);
+ jit_stxi_i(offsetof(struct lightrec_state, target_cycle),
+ LIGHTREC_REG_STATE, tmp);
+ jit_stxi_i(offsetof(struct lightrec_state, current_cycle),
+ LIGHTREC_REG_STATE, tmp);
+
lightrec_free_reg(reg_cache, tmp);
/* TODO: the return address should be "pc - 4" if we're a delay slot */
jit_state_t *_jit = block->_jit;
jit_note(__FILE__, __LINE__);
- lightrec_clean_reg_if_loaded(reg_cache, _jit, c.i.rt, true);
+
+ if (c.i.op != OP_SWC2)
+ lightrec_clean_reg_if_loaded(reg_cache, _jit, c.i.rt, true);
call_to_c_wrapper(state, block, c.opcode, C_WRAPPER_MFC);
}
jit_note(__FILE__, __LINE__);
lightrec_clean_reg_if_loaded(reg_cache, _jit, c.i.rs, false);
lightrec_clean_reg_if_loaded(reg_cache, _jit, c.i.rt, false);
+ lightrec_clean_reg_if_loaded(reg_cache, _jit, REG_TEMP, false);
call_to_c_wrapper(state, block, c.opcode, C_WRAPPER_MTC);
lightrec_free_reg(reg_cache, rt);
}
-static bool block_in_bios(const struct lightrec_cstate *state,
- const struct block *block)
+static bool block_uses_icache(const struct lightrec_cstate *state,
+ const struct block *block)
{
- const struct lightrec_mem_map *bios = &state->state->maps[PSX_MAP_BIOS];
+ const struct lightrec_mem_map *map = &state->state->maps[PSX_MAP_KERNEL_USER_RAM];
u32 pc = kunseg(block->pc);
- return pc >= bios->pc && pc < bios->pc + bios->length;
+ if (pc < map->pc || pc >= map->pc + map->length)
+ return false;
+
+ return (block->pc >> 28) < 0xa;
}
static void
break;
}
- if (block_in_bios(state, block) && c.r.rd == 12) {
- /* If we are running code from the BIOS, handle writes to the
- * Status register in C. BIOS code may toggle bit 16 which will
- * map/unmap the RAM, while game code cannot do that. */
+ if (!block_uses_icache(state, block) && c.r.rd == 12) {
+ /* If we are not running code from the RAM through kuseg or
+ * kseg0, handle writes to the Status register in C; as the
+ * code may toggle bit 16 which isolates the cache. Code
+ * running from kuseg or kseg0 in RAM cannot do that. */
rec_mtc(state, block, offset);
return;
}
return cp2c_i_offset(reg) + is_big_endian() * 2;
}
-static void rec_cp2_basic_MFC2(struct lightrec_cstate *state,
- const struct block *block, u16 offset)
+static void rec_cp2_do_mfc2(struct lightrec_cstate *state,
+ const struct block *block, u16 offset,
+ u8 reg, u8 out_reg)
{
struct regcache *reg_cache = state->reg_cache;
- const union code c = block->opcode_list[offset].c;
jit_state_t *_jit = block->_jit;
const u32 zext_regs = 0x300f0080;
u8 rt, tmp, tmp2, tmp3, out, flags;
- u8 reg = c.r.rd == 15 ? 14 : c.r.rd;
unsigned int i;
_jit_name(block->_jit, __func__);
}
flags = (zext_regs & BIT(reg)) ? REG_ZEXT : REG_EXT;
- rt = lightrec_alloc_reg_out(reg_cache, _jit, c.r.rt, flags);
+ rt = lightrec_alloc_reg_out(reg_cache, _jit, out_reg, flags);
+
+ if (reg == 15)
+ reg = 14;
switch (reg) {
case 1:
lightrec_free_reg(reg_cache, rt);
}
+static void rec_cp2_basic_MFC2(struct lightrec_cstate *state,
+ const struct block *block, u16 offset)
+{
+ const union code c = block->opcode_list[offset].c;
+
+ rec_cp2_do_mfc2(state, block, offset, c.r.rd, c.r.rt);
+}
+
static void rec_cp2_basic_CFC2(struct lightrec_cstate *state,
const struct block *block, u16 offset)
{
lightrec_free_reg(reg_cache, rt);
}
-static void rec_cp2_basic_MTC2(struct lightrec_cstate *state,
- const struct block *block, u16 offset)
+static void rec_cp2_do_mtc2(struct lightrec_cstate *state,
+ const struct block *block, u16 offset,
+ u8 reg, u8 in_reg)
{
struct regcache *reg_cache = state->reg_cache;
- const union code c = block->opcode_list[offset].c;
jit_state_t *_jit = block->_jit;
- jit_node_t *loop, *to_loop;
u8 rt, tmp, tmp2, flags = 0;
_jit_name(block->_jit, __func__);
return;
}
- if (c.r.rd == 31)
+ if (reg == 31)
return;
- if (c.r.rd == 30)
+ if (reg == 30)
flags |= REG_EXT;
- rt = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rt, flags);
+ rt = lightrec_alloc_reg_in(reg_cache, _jit, in_reg, flags);
- switch (c.r.rd) {
+ switch (reg) {
case 15:
tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
jit_ldxi_i(tmp, LIGHTREC_REG_STATE, cp2d_i_offset(13));
break;
case 30:
tmp = lightrec_alloc_reg_temp(reg_cache, _jit);
- tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit);
/* if (rt < 0) rt = ~rt; */
jit_rshi(tmp, rt, 31);
jit_xorr(tmp, rt, tmp);
- /* We know the sign bit is 0. Left-shift by 1 to start the algorithm */
- jit_lshi(tmp, tmp, 1);
- jit_movi(tmp2, 33);
-
- /* Decrement tmp2 and right-shift the value by 1 until it equals zero */
- loop = jit_label();
- jit_subi(tmp2, tmp2, 1);
- jit_rshi_u(tmp, tmp, 1);
- to_loop = jit_bnei(tmp, 0);
+ /* Count leading zeros */
+ jit_clzr(tmp, tmp);
+ if (__WORDSIZE != 32)
+ jit_subi(tmp, tmp, __WORDSIZE - 32);
- jit_patch_at(to_loop, loop);
-
- jit_stxi_i(cp2d_i_offset(31), LIGHTREC_REG_STATE, tmp2);
- jit_stxi_i(cp2d_i_offset(30), LIGHTREC_REG_STATE, rt);
+ jit_stxi_i(cp2d_i_offset(31), LIGHTREC_REG_STATE, tmp);
lightrec_free_reg(reg_cache, tmp);
- lightrec_free_reg(reg_cache, tmp2);
- break;
+ fallthrough;
default:
- jit_stxi_i(cp2d_i_offset(c.r.rd), LIGHTREC_REG_STATE, rt);
+ jit_stxi_i(cp2d_i_offset(reg), LIGHTREC_REG_STATE, rt);
break;
}
lightrec_free_reg(reg_cache, rt);
}
+static void rec_cp2_basic_MTC2(struct lightrec_cstate *state,
+ const struct block *block, u16 offset)
+{
+ const union code c = block->opcode_list[offset].c;
+
+ rec_cp2_do_mtc2(state, block, offset, c.r.rd, c.r.rt);
+}
+
static void rec_cp2_basic_CTC2(struct lightrec_cstate *state,
const struct block *block, u16 offset)
{
const struct block *block, u16 offset)
{
struct regcache *reg_cache = state->reg_cache;
- union code c = block->opcode_list[offset].c;
+ const struct opcode *op = &block->opcode_list[offset];
+ union code c = op->c;
jit_state_t *_jit = block->_jit;
+ bool unload_rd;
u8 rs, rd;
_jit_name(block->_jit, __func__);
jit_note(__FILE__, __LINE__);
- if (c.r.rs)
- rs = lightrec_alloc_reg_in(reg_cache, _jit, c.r.rs, 0);
- rd = lightrec_alloc_reg_out(reg_cache, _jit, c.r.rd, REG_EXT);
- if (c.r.rs == 0)
- jit_movi(rd, 0);
- else
- jit_extr_i(rd, rs);
+ unload_rd = OPT_EARLY_UNLOAD
+ && LIGHTREC_FLAGS_GET_RD(op->flags) == LIGHTREC_REG_UNLOAD;
+
+ if (c.m.rs && !lightrec_reg_is_loaded(reg_cache, c.m.rs)) {
+ /* The source register is not yet loaded - we can load its value
+ * from the register cache directly into the target register. */
+ rd = lightrec_alloc_reg_out(reg_cache, _jit, c.m.rd, REG_EXT);
+
+ jit_ldxi_i(rd, LIGHTREC_REG_STATE,
+ offsetof(struct lightrec_state, regs.gpr) + (c.m.rs << 2));
+
+ lightrec_free_reg(reg_cache, rd);
+ } else if (unload_rd) {
+ /* If the destination register will be unloaded right after the
+ * MOV meta-opcode, we don't actually need to write any host
+ * register - we can just store the source register directly to
+ * the register cache, at the offset corresponding to the
+ * destination register. */
+ lightrec_discard_reg_if_loaded(reg_cache, c.m.rd);
+
+ rs = lightrec_alloc_reg_in(reg_cache, _jit, c.m.rs, 0);
+
+ jit_stxi_i(offsetof(struct lightrec_state, regs.gpr)
+ + (c.m.rd << 2), LIGHTREC_REG_STATE, rs);
- if (c.r.rs)
lightrec_free_reg(reg_cache, rs);
- lightrec_free_reg(reg_cache, rd);
+ } else {
+ if (c.m.rs)
+ rs = lightrec_alloc_reg_in(reg_cache, _jit, c.m.rs, 0);
+
+ rd = lightrec_alloc_reg_out(reg_cache, _jit, c.m.rd, REG_EXT);
+
+ if (c.m.rs == 0) {
+ jit_movi(rd, 0);
+ } else {
+ jit_extr_i(rd, rs);
+ lightrec_free_reg(reg_cache, rs);
+ }
+
+ lightrec_free_reg(reg_cache, rd);
+ }
}
static void rec_meta_EXTC_EXTS(struct lightrec_cstate *state,
struct regcache *reg_cache = state->reg_cache;
union code c = block->opcode_list[offset].c;
jit_state_t *_jit = block->_jit;
- u8 rs, rt;
+ u8 rs, rd;
_jit_name(block->_jit, __func__);
jit_note(__FILE__, __LINE__);
- rs = lightrec_alloc_reg_in(reg_cache, _jit, c.i.rs, 0);
- rt = lightrec_alloc_reg_out(reg_cache, _jit, c.i.rt, REG_EXT);
+ rs = lightrec_alloc_reg_in(reg_cache, _jit, c.m.rs, 0);
+ rd = lightrec_alloc_reg_out(reg_cache, _jit, c.m.rd, REG_EXT);
- if (c.i.op == OP_META_EXTC)
- jit_extr_c(rt, rs);
+ if (c.m.op == OP_META_EXTC)
+ jit_extr_c(rd, rs);
else
- jit_extr_s(rt, rs);
+ jit_extr_s(rd, rs);
lightrec_free_reg(reg_cache, rs);
- lightrec_free_reg(reg_cache, rt);
+ lightrec_free_reg(reg_cache, rd);
}
static void rec_meta_MULT2(struct lightrec_cstate *state,
jit_note(__FILE__, __LINE__);
}
+static void rec_meta_COM(struct lightrec_cstate *state,
+ const struct block *block, u16 offset)
+{
+ struct regcache *reg_cache = state->reg_cache;
+ union code c = block->opcode_list[offset].c;
+ jit_state_t *_jit = block->_jit;
+ u8 rd, rs, flags;
+
+ jit_note(__FILE__, __LINE__);
+ rs = lightrec_alloc_reg_in(reg_cache, _jit, c.m.rs, 0);
+ rd = lightrec_alloc_reg_out(reg_cache, _jit, c.m.rd, 0);
+
+ flags = lightrec_get_reg_in_flags(reg_cache, rs);
+
+ lightrec_set_reg_out_flags(reg_cache, rd,
+ flags & REG_EXT);
+
+ jit_comr(rd, rs);
+
+ lightrec_free_reg(reg_cache, rs);
+ lightrec_free_reg(reg_cache, rd);
+}
+
static const lightrec_rec_func_t rec_standard[64] = {
SET_DEFAULT_ELM(rec_standard, unknown_opcode),
[OP_SPECIAL] = rec_SPECIAL,
[OP_SWL] = rec_SWL,
[OP_SW] = rec_SW,
[OP_SWR] = rec_SWR,
- [OP_LWC2] = rec_LWC2,
- [OP_SWC2] = rec_SWC2,
+ [OP_LWC2] = rec_LW,
+ [OP_SWC2] = rec_SW,
- [OP_META_MOV] = rec_meta_MOV,
- [OP_META_EXTC] = rec_meta_EXTC_EXTS,
- [OP_META_EXTS] = rec_meta_EXTC_EXTS,
+ [OP_META] = rec_META,
[OP_META_MULT2] = rec_meta_MULT2,
[OP_META_MULTU2] = rec_meta_MULT2,
};
[OP_CP2_BASIC_CTC2] = rec_cp2_basic_CTC2,
};
+static const lightrec_rec_func_t rec_meta[64] = {
+ SET_DEFAULT_ELM(rec_meta, unknown_opcode),
+ [OP_META_MOV] = rec_meta_MOV,
+ [OP_META_EXTC] = rec_meta_EXTC_EXTS,
+ [OP_META_EXTS] = rec_meta_EXTC_EXTS,
+ [OP_META_COM] = rec_meta_COM,
+};
+
static void rec_SPECIAL(struct lightrec_cstate *state,
const struct block *block, u16 offset)
{
rec_CP(state, block, offset);
}
+static void rec_META(struct lightrec_cstate *state,
+ const struct block *block, u16 offset)
+{
+ union code c = block->opcode_list[offset].c;
+ lightrec_rec_func_t f = rec_meta[c.m.op];
+
+ if (!HAS_DEFAULT_ELM && unlikely(!f))
+ unknown_opcode(state, block, offset);
+ else
+ (*f)(state, block, offset);
+}
+
void lightrec_rec_opcode(struct lightrec_cstate *state,
const struct block *block, u16 offset)
{
lightrec_do_early_unload(state, block, unload_offset);
}
+
+ state->no_load_delay = false;
}
notaz.gp2x.de / pcsx_rearmed.git / blobdiff