#include "trace-tcg.h"
#include "exec/log.h"
-#define LOG_DIS(str, ...) \
- qemu_log_mask(CPU_LOG_TB_IN_ASM, "%08x: " str, dc->base.pc_next, \
- ## __VA_ARGS__)
-
/* is_jmp field values */
-#define DISAS_JUMP DISAS_TARGET_0 /* only pc was modified dynamically */
-#define DISAS_UPDATE DISAS_TARGET_1 /* cpu state was modified dynamically */
-#define DISAS_TB_JUMP DISAS_TARGET_2 /* only pc was modified statically */
+#define DISAS_EXIT DISAS_TARGET_0 /* force exit to main loop */
+#define DISAS_JUMP DISAS_TARGET_1 /* exit via jmp_pc/jmp_pc_imm */
typedef struct DisasContext {
DisasContextBase base;
uint32_t mem_idx;
uint32_t tb_flags;
uint32_t delayed_branch;
+
+ /* If not -1, jmp_pc contains this value and so is a direct jump. */
+ target_ulong jmp_pc_imm;
} DisasContext;
+static inline bool is_user(DisasContext *dc)
+{
+#ifdef CONFIG_USER_ONLY
+ return true;
+#else
+ return !(dc->tb_flags & TB_FLAGS_SM);
+#endif
+}
+
/* Include the auto-generated decoder. */
#include "decode.inc.c"
} \
} while (0)
-static inline bool use_goto_tb(DisasContext *dc, target_ulong dest)
-{
- if (unlikely(dc->base.singlestep_enabled)) {
- return false;
- }
-
-#ifndef CONFIG_USER_ONLY
- return (dc->base.tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK);
-#else
- return true;
-#endif
-}
-
-static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
-{
- if (use_goto_tb(dc, dest)) {
- tcg_gen_movi_tl(cpu_pc, dest);
- tcg_gen_goto_tb(n);
- tcg_gen_exit_tb((uintptr_t)dc->base.tb + n);
- } else {
- tcg_gen_movi_tl(cpu_pc, dest);
- if (dc->base.singlestep_enabled) {
- gen_exception(dc, EXCP_DEBUG);
- }
- tcg_gen_exit_tb(0);
- }
-}
-
static void gen_ove_cy(DisasContext *dc)
{
if (dc->tb_flags & SR_OVE) {
static bool trans_l_add(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.add r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
gen_add(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_addc(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.addc r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
gen_addc(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_sub(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.sub r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
gen_sub(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_and(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.and r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
tcg_gen_and_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_or(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.or r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
tcg_gen_or_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_xor(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.xor r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
tcg_gen_xor_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_sll(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.sll r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
tcg_gen_shl_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_srl(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.srl r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
tcg_gen_shr_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_sra(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.sra r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
tcg_gen_sar_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_ror(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.ror r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
tcg_gen_rotr_tl(cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_exths(DisasContext *dc, arg_da *a, uint32_t insn)
{
- LOG_DIS("l.exths r%d, r%d\n", a->d, a->a);
check_r0_write(a->d);
tcg_gen_ext16s_tl(cpu_R[a->d], cpu_R[a->a]);
return true;
static bool trans_l_extbs(DisasContext *dc, arg_da *a, uint32_t insn)
{
- LOG_DIS("l.extbs r%d, r%d\n", a->d, a->a);
check_r0_write(a->d);
tcg_gen_ext8s_tl(cpu_R[a->d], cpu_R[a->a]);
return true;
static bool trans_l_exthz(DisasContext *dc, arg_da *a, uint32_t insn)
{
- LOG_DIS("l.exthz r%d, r%d\n", a->d, a->a);
check_r0_write(a->d);
tcg_gen_ext16u_tl(cpu_R[a->d], cpu_R[a->a]);
return true;
static bool trans_l_extbz(DisasContext *dc, arg_da *a, uint32_t insn)
{
- LOG_DIS("l.extbz r%d, r%d\n", a->d, a->a);
check_r0_write(a->d);
tcg_gen_ext8u_tl(cpu_R[a->d], cpu_R[a->a]);
return true;
static bool trans_l_cmov(DisasContext *dc, arg_dab *a, uint32_t insn)
{
TCGv zero;
- LOG_DIS("l.cmov r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
zero = tcg_const_tl(0);
static bool trans_l_ff1(DisasContext *dc, arg_da *a, uint32_t insn)
{
- LOG_DIS("l.ff1 r%d, r%d\n", a->d, a->a);
-
check_r0_write(a->d);
tcg_gen_ctzi_tl(cpu_R[a->d], cpu_R[a->a], -1);
tcg_gen_addi_tl(cpu_R[a->d], cpu_R[a->d], 1);
static bool trans_l_fl1(DisasContext *dc, arg_da *a, uint32_t insn)
{
- LOG_DIS("l.fl1 r%d, r%d\n", a->d, a->a);
-
check_r0_write(a->d);
tcg_gen_clzi_tl(cpu_R[a->d], cpu_R[a->a], TARGET_LONG_BITS);
tcg_gen_subfi_tl(cpu_R[a->d], TARGET_LONG_BITS, cpu_R[a->d]);
static bool trans_l_mul(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.mul r%d, r%d, r%d\n", a->d, a->a, a->b);
-
check_r0_write(a->d);
gen_mul(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_mulu(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.mulu r%d, r%d, r%d\n", a->d, a->a, a->b);
-
check_r0_write(a->d);
gen_mulu(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_div(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.div r%d, r%d, r%d\n", a->d, a->a, a->b);
-
check_r0_write(a->d);
gen_div(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_divu(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("l.divu r%d, r%d, r%d\n", a->d, a->a, a->b);
-
check_r0_write(a->d);
gen_divu(dc, cpu_R[a->d], cpu_R[a->a], cpu_R[a->b]);
return true;
static bool trans_l_muld(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("l.muld r%d, r%d\n", a->a, a->b);
gen_muld(dc, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_muldu(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("l.muldu r%d, r%d\n", a->a, a->b);
gen_muldu(dc, cpu_R[a->a], cpu_R[a->b]);
return true;
}
{
target_ulong tmp_pc = dc->base.pc_next + a->n * 4;
- LOG_DIS("l.j %d\n", a->n);
tcg_gen_movi_tl(jmp_pc, tmp_pc);
+ dc->jmp_pc_imm = tmp_pc;
dc->delayed_branch = 2;
return true;
}
target_ulong tmp_pc = dc->base.pc_next + a->n * 4;
target_ulong ret_pc = dc->base.pc_next + 8;
- LOG_DIS("l.jal %d\n", a->n);
tcg_gen_movi_tl(cpu_R[9], ret_pc);
/* Optimize jal being used to load the PC for PIC. */
if (tmp_pc != ret_pc) {
tcg_gen_movi_tl(jmp_pc, tmp_pc);
+ dc->jmp_pc_imm = tmp_pc;
dc->delayed_branch = 2;
}
return true;
static bool trans_l_bf(DisasContext *dc, arg_l_bf *a, uint32_t insn)
{
- LOG_DIS("l.bf %d\n", a->n);
do_bf(dc, a, TCG_COND_NE);
return true;
}
static bool trans_l_bnf(DisasContext *dc, arg_l_bf *a, uint32_t insn)
{
- LOG_DIS("l.bnf %d\n", a->n);
do_bf(dc, a, TCG_COND_EQ);
return true;
}
static bool trans_l_jr(DisasContext *dc, arg_l_jr *a, uint32_t insn)
{
- LOG_DIS("l.jr r%d\n", a->b);
tcg_gen_mov_tl(jmp_pc, cpu_R[a->b]);
dc->delayed_branch = 2;
return true;
static bool trans_l_jalr(DisasContext *dc, arg_l_jalr *a, uint32_t insn)
{
- LOG_DIS("l.jalr r%d\n", a->b);
tcg_gen_mov_tl(jmp_pc, cpu_R[a->b]);
tcg_gen_movi_tl(cpu_R[9], dc->base.pc_next + 8);
dc->delayed_branch = 2;
{
TCGv ea;
- LOG_DIS("l.lwa r%d, r%d, %d\n", a->d, a->a, a->i);
-
check_r0_write(a->d);
ea = tcg_temp_new();
tcg_gen_addi_tl(ea, cpu_R[a->a], a->i);
static bool trans_l_lwz(DisasContext *dc, arg_load *a, uint32_t insn)
{
- LOG_DIS("l.lwz r%d, r%d, %d\n", a->d, a->a, a->i);
do_load(dc, a, MO_TEUL);
return true;
}
static bool trans_l_lws(DisasContext *dc, arg_load *a, uint32_t insn)
{
- LOG_DIS("l.lws r%d, r%d, %d\n", a->d, a->a, a->i);
do_load(dc, a, MO_TESL);
return true;
}
static bool trans_l_lbz(DisasContext *dc, arg_load *a, uint32_t insn)
{
- LOG_DIS("l.lbz r%d, r%d, %d\n", a->d, a->a, a->i);
do_load(dc, a, MO_UB);
return true;
}
static bool trans_l_lbs(DisasContext *dc, arg_load *a, uint32_t insn)
{
- LOG_DIS("l.lbs r%d, r%d, %d\n", a->d, a->a, a->i);
do_load(dc, a, MO_SB);
return true;
}
static bool trans_l_lhz(DisasContext *dc, arg_load *a, uint32_t insn)
{
- LOG_DIS("l.lhz r%d, r%d, %d\n", a->d, a->a, a->i);
do_load(dc, a, MO_TEUW);
return true;
}
static bool trans_l_lhs(DisasContext *dc, arg_load *a, uint32_t insn)
{
- LOG_DIS("l.lhs r%d, r%d, %d\n", a->d, a->a, a->i);
do_load(dc, a, MO_TESW);
return true;
}
TCGv ea, val;
TCGLabel *lab_fail, *lab_done;
- LOG_DIS("l.swa r%d, r%d, %d\n", a->a, a->b, a->i);
-
ea = tcg_temp_new();
tcg_gen_addi_tl(ea, cpu_R[a->a], a->i);
static bool trans_l_sw(DisasContext *dc, arg_store *a, uint32_t insn)
{
- LOG_DIS("l.sw r%d, r%d, %d\n", a->a, a->b, a->i);
do_store(dc, a, MO_TEUL);
return true;
}
static bool trans_l_sb(DisasContext *dc, arg_store *a, uint32_t insn)
{
- LOG_DIS("l.sb r%d, r%d, %d\n", a->a, a->b, a->i);
do_store(dc, a, MO_UB);
return true;
}
static bool trans_l_sh(DisasContext *dc, arg_store *a, uint32_t insn)
{
- LOG_DIS("l.sh r%d, r%d, %d\n", a->a, a->b, a->i);
do_store(dc, a, MO_TEUW);
return true;
}
static bool trans_l_nop(DisasContext *dc, arg_l_nop *a, uint32_t insn)
{
- LOG_DIS("l.nop %d\n", a->k);
return true;
}
{
TCGv t0;
- LOG_DIS("l.addi r%d, r%d, %d\n", a->d, a->a, a->i);
check_r0_write(a->d);
t0 = tcg_const_tl(a->i);
gen_add(dc, cpu_R[a->d], cpu_R[a->a], t0);
{
TCGv t0;
- LOG_DIS("l.addic r%d, r%d, %d\n", a->d, a->a, a->i);
check_r0_write(a->d);
t0 = tcg_const_tl(a->i);
gen_addc(dc, cpu_R[a->d], cpu_R[a->a], t0);
{
TCGv t0;
- LOG_DIS("l.muli r%d, r%d, %d\n", a->d, a->a, a->i);
check_r0_write(a->d);
t0 = tcg_const_tl(a->i);
gen_mul(dc, cpu_R[a->d], cpu_R[a->a], t0);
{
TCGv t0;
- LOG_DIS("l.maci r%d, %d\n", a->a, a->i);
t0 = tcg_const_tl(a->i);
gen_mac(dc, cpu_R[a->a], t0);
tcg_temp_free(t0);
static bool trans_l_andi(DisasContext *dc, arg_rrk *a, uint32_t insn)
{
- LOG_DIS("l.andi r%d, r%d, %d\n", a->d, a->a, a->k);
check_r0_write(a->d);
tcg_gen_andi_tl(cpu_R[a->d], cpu_R[a->a], a->k);
return true;
static bool trans_l_ori(DisasContext *dc, arg_rrk *a, uint32_t insn)
{
- LOG_DIS("l.ori r%d, r%d, %d\n", a->d, a->a, a->k);
check_r0_write(a->d);
tcg_gen_ori_tl(cpu_R[a->d], cpu_R[a->a], a->k);
return true;
static bool trans_l_xori(DisasContext *dc, arg_rri *a, uint32_t insn)
{
- LOG_DIS("l.xori r%d, r%d, %d\n", a->d, a->a, a->i);
check_r0_write(a->d);
tcg_gen_xori_tl(cpu_R[a->d], cpu_R[a->a], a->i);
return true;
static bool trans_l_mfspr(DisasContext *dc, arg_l_mfspr *a, uint32_t insn)
{
- LOG_DIS("l.mfspr r%d, r%d, %d\n", a->d, a->a, a->k);
check_r0_write(a->d);
-#ifdef CONFIG_USER_ONLY
- gen_illegal_exception(dc);
-#else
- if (dc->mem_idx == MMU_USER_IDX) {
+ if (is_user(dc)) {
gen_illegal_exception(dc);
} else {
- TCGv_i32 ti = tcg_const_i32(a->k);
- gen_helper_mfspr(cpu_R[a->d], cpu_env, cpu_R[a->d], cpu_R[a->a], ti);
- tcg_temp_free_i32(ti);
+ TCGv spr = tcg_temp_new();
+ tcg_gen_ori_tl(spr, cpu_R[a->a], a->k);
+ gen_helper_mfspr(cpu_R[a->d], cpu_env, cpu_R[a->d], spr);
+ tcg_temp_free(spr);
}
-#endif
return true;
}
static bool trans_l_mtspr(DisasContext *dc, arg_l_mtspr *a, uint32_t insn)
{
- LOG_DIS("l.mtspr r%d, r%d, %d\n", a->a, a->b, a->k);
-
-#ifdef CONFIG_USER_ONLY
- gen_illegal_exception(dc);
-#else
- if (dc->mem_idx == MMU_USER_IDX) {
+ if (is_user(dc)) {
gen_illegal_exception(dc);
} else {
- TCGv_i32 ti = tcg_const_i32(a->k);
- gen_helper_mtspr(cpu_env, cpu_R[a->a], cpu_R[a->b], ti);
- tcg_temp_free_i32(ti);
+ TCGv spr;
+
+ /* For SR, we will need to exit the TB to recognize the new
+ * exception state. For NPC, in theory this counts as a branch
+ * (although the SPR only exists for use by an ICE). Save all
+ * of the cpu state first, allowing it to be overwritten.
+ */
+ if (dc->delayed_branch) {
+ tcg_gen_mov_tl(cpu_pc, jmp_pc);
+ tcg_gen_discard_tl(jmp_pc);
+ } else {
+ tcg_gen_movi_tl(cpu_pc, dc->base.pc_next + 4);
+ }
+ dc->base.is_jmp = DISAS_EXIT;
+
+ spr = tcg_temp_new();
+ tcg_gen_ori_tl(spr, cpu_R[a->a], a->k);
+ gen_helper_mtspr(cpu_env, spr, cpu_R[a->b]);
+ tcg_temp_free(spr);
}
-#endif
return true;
}
static bool trans_l_mac(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("l.mac r%d, r%d\n", a->a, a->b);
gen_mac(dc, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_msb(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("l.msb r%d, r%d\n", a->a, a->b);
gen_msb(dc, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_macu(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("l.mac r%d, r%d\n", a->a, a->b);
gen_macu(dc, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_msbu(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("l.msb r%d, r%d\n", a->a, a->b);
gen_msbu(dc, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_slli(DisasContext *dc, arg_dal *a, uint32_t insn)
{
- LOG_DIS("l.slli r%d, r%d, %d\n", a->d, a->a, a->l);
check_r0_write(a->d);
tcg_gen_shli_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1));
return true;
static bool trans_l_srli(DisasContext *dc, arg_dal *a, uint32_t insn)
{
- LOG_DIS("l.srli r%d, r%d, %d\n", a->d, a->a, a->l);
check_r0_write(a->d);
tcg_gen_shri_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1));
return true;
static bool trans_l_srai(DisasContext *dc, arg_dal *a, uint32_t insn)
{
- LOG_DIS("l.srai r%d, r%d, %d\n", a->d, a->a, a->l);
check_r0_write(a->d);
tcg_gen_sari_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1));
return true;
static bool trans_l_rori(DisasContext *dc, arg_dal *a, uint32_t insn)
{
- LOG_DIS("l.rori r%d, r%d, %d\n", a->d, a->a, a->l);
check_r0_write(a->d);
tcg_gen_rotri_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1));
return true;
static bool trans_l_movhi(DisasContext *dc, arg_l_movhi *a, uint32_t insn)
{
- LOG_DIS("l.movhi r%d, %d\n", a->d, a->k);
check_r0_write(a->d);
tcg_gen_movi_tl(cpu_R[a->d], a->k << 16);
return true;
static bool trans_l_macrc(DisasContext *dc, arg_l_macrc *a, uint32_t insn)
{
- LOG_DIS("l.macrc r%d\n", a->d);
check_r0_write(a->d);
tcg_gen_trunc_i64_tl(cpu_R[a->d], cpu_mac);
tcg_gen_movi_i64(cpu_mac, 0);
static bool trans_l_sfeq(DisasContext *dc, arg_ab *a, TCGCond cond)
{
- LOG_DIS("l.sfeq r%d, r%d\n", a->a, a->b);
tcg_gen_setcond_tl(TCG_COND_EQ, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_sfne(DisasContext *dc, arg_ab *a, TCGCond cond)
{
- LOG_DIS("l.sfne r%d, r%d\n", a->a, a->b);
tcg_gen_setcond_tl(TCG_COND_NE, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_sfgtu(DisasContext *dc, arg_ab *a, TCGCond cond)
{
- LOG_DIS("l.sfgtu r%d, r%d\n", a->a, a->b);
tcg_gen_setcond_tl(TCG_COND_GTU, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_sfgeu(DisasContext *dc, arg_ab *a, TCGCond cond)
{
- LOG_DIS("l.sfgeu r%d, r%d\n", a->a, a->b);
tcg_gen_setcond_tl(TCG_COND_GEU, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_sfltu(DisasContext *dc, arg_ab *a, TCGCond cond)
{
- LOG_DIS("l.sfltu r%d, r%d\n", a->a, a->b);
tcg_gen_setcond_tl(TCG_COND_LTU, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_sfleu(DisasContext *dc, arg_ab *a, TCGCond cond)
{
- LOG_DIS("l.sfleu r%d, r%d\n", a->a, a->b);
tcg_gen_setcond_tl(TCG_COND_LEU, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_sfgts(DisasContext *dc, arg_ab *a, TCGCond cond)
{
- LOG_DIS("l.sfgts r%d, r%d\n", a->a, a->b);
tcg_gen_setcond_tl(TCG_COND_GT, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_sfges(DisasContext *dc, arg_ab *a, TCGCond cond)
{
- LOG_DIS("l.sfges r%d, r%d\n", a->a, a->b);
tcg_gen_setcond_tl(TCG_COND_GE, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_sflts(DisasContext *dc, arg_ab *a, TCGCond cond)
{
- LOG_DIS("l.sflts r%d, r%d\n", a->a, a->b);
tcg_gen_setcond_tl(TCG_COND_LT, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_sfles(DisasContext *dc, arg_ab *a, TCGCond cond)
{
- LOG_DIS("l.sfles r%d, r%d\n", a->a, a->b);
tcg_gen_setcond_tl(TCG_COND_LE, cpu_sr_f, cpu_R[a->a], cpu_R[a->b]);
return true;
}
static bool trans_l_sfeqi(DisasContext *dc, arg_ai *a, TCGCond cond)
{
- LOG_DIS("l.sfeqi r%d, %d\n", a->a, a->i);
tcg_gen_setcondi_tl(TCG_COND_EQ, cpu_sr_f, cpu_R[a->a], a->i);
return true;
}
static bool trans_l_sfnei(DisasContext *dc, arg_ai *a, TCGCond cond)
{
- LOG_DIS("l.sfnei r%d, %d\n", a->a, a->i);
tcg_gen_setcondi_tl(TCG_COND_NE, cpu_sr_f, cpu_R[a->a], a->i);
return true;
}
static bool trans_l_sfgtui(DisasContext *dc, arg_ai *a, TCGCond cond)
{
- LOG_DIS("l.sfgtui r%d, %d\n", a->a, a->i);
tcg_gen_setcondi_tl(TCG_COND_GTU, cpu_sr_f, cpu_R[a->a], a->i);
return true;
}
static bool trans_l_sfgeui(DisasContext *dc, arg_ai *a, TCGCond cond)
{
- LOG_DIS("l.sfgeui r%d, %d\n", a->a, a->i);
tcg_gen_setcondi_tl(TCG_COND_GEU, cpu_sr_f, cpu_R[a->a], a->i);
return true;
}
static bool trans_l_sfltui(DisasContext *dc, arg_ai *a, TCGCond cond)
{
- LOG_DIS("l.sfltui r%d, %d\n", a->a, a->i);
tcg_gen_setcondi_tl(TCG_COND_LTU, cpu_sr_f, cpu_R[a->a], a->i);
return true;
}
static bool trans_l_sfleui(DisasContext *dc, arg_ai *a, TCGCond cond)
{
- LOG_DIS("l.sfleui r%d, %d\n", a->a, a->i);
tcg_gen_setcondi_tl(TCG_COND_LEU, cpu_sr_f, cpu_R[a->a], a->i);
return true;
}
static bool trans_l_sfgtsi(DisasContext *dc, arg_ai *a, TCGCond cond)
{
- LOG_DIS("l.sfgtsi r%d, %d\n", a->a, a->i);
tcg_gen_setcondi_tl(TCG_COND_GT, cpu_sr_f, cpu_R[a->a], a->i);
return true;
}
static bool trans_l_sfgesi(DisasContext *dc, arg_ai *a, TCGCond cond)
{
- LOG_DIS("l.sfgesi r%d, %d\n", a->a, a->i);
tcg_gen_setcondi_tl(TCG_COND_GE, cpu_sr_f, cpu_R[a->a], a->i);
return true;
}
static bool trans_l_sfltsi(DisasContext *dc, arg_ai *a, TCGCond cond)
{
- LOG_DIS("l.sfltsi r%d, %d\n", a->a, a->i);
tcg_gen_setcondi_tl(TCG_COND_LT, cpu_sr_f, cpu_R[a->a], a->i);
return true;
}
static bool trans_l_sflesi(DisasContext *dc, arg_ai *a, TCGCond cond)
{
- LOG_DIS("l.sflesi r%d, %d\n", a->a, a->i);
tcg_gen_setcondi_tl(TCG_COND_LE, cpu_sr_f, cpu_R[a->a], a->i);
return true;
}
static bool trans_l_sys(DisasContext *dc, arg_l_sys *a, uint32_t insn)
{
- LOG_DIS("l.sys %d\n", a->k);
tcg_gen_movi_tl(cpu_pc, dc->base.pc_next);
gen_exception(dc, EXCP_SYSCALL);
dc->base.is_jmp = DISAS_NORETURN;
static bool trans_l_trap(DisasContext *dc, arg_l_trap *a, uint32_t insn)
{
- LOG_DIS("l.trap %d\n", a->k);
tcg_gen_movi_tl(cpu_pc, dc->base.pc_next);
gen_exception(dc, EXCP_TRAP);
dc->base.is_jmp = DISAS_NORETURN;
static bool trans_l_msync(DisasContext *dc, arg_l_msync *a, uint32_t insn)
{
- LOG_DIS("l.msync\n");
tcg_gen_mb(TCG_MO_ALL);
return true;
}
static bool trans_l_psync(DisasContext *dc, arg_l_psync *a, uint32_t insn)
{
- LOG_DIS("l.psync\n");
return true;
}
static bool trans_l_csync(DisasContext *dc, arg_l_csync *a, uint32_t insn)
{
- LOG_DIS("l.csync\n");
return true;
}
static bool trans_l_rfe(DisasContext *dc, arg_l_rfe *a, uint32_t insn)
{
- LOG_DIS("l.rfe\n");
-
-#ifdef CONFIG_USER_ONLY
- gen_illegal_exception(dc);
-#else
- if (dc->mem_idx == MMU_USER_IDX) {
+ if (is_user(dc)) {
gen_illegal_exception(dc);
} else {
gen_helper_rfe(cpu_env);
- dc->base.is_jmp = DISAS_UPDATE;
+ dc->base.is_jmp = DISAS_EXIT;
}
-#endif
return true;
}
static bool trans_lf_add_s(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("lf.add.s r%d, r%d, r%d\n", a->d, a->a, a->b);
do_fp3(dc, a, gen_helper_float_add_s);
return true;
}
static bool trans_lf_sub_s(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("lf.sub.s r%d, r%d, r%d\n", a->d, a->a, a->b);
do_fp3(dc, a, gen_helper_float_sub_s);
return true;
}
static bool trans_lf_mul_s(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("lf.mul.s r%d, r%d, r%d\n", a->d, a->a, a->b);
do_fp3(dc, a, gen_helper_float_mul_s);
return true;
}
static bool trans_lf_div_s(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("lf.div.s r%d, r%d, r%d\n", a->d, a->a, a->b);
do_fp3(dc, a, gen_helper_float_div_s);
return true;
}
static bool trans_lf_rem_s(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("lf.rem.s r%d, r%d, r%d\n", a->d, a->a, a->b);
do_fp3(dc, a, gen_helper_float_rem_s);
return true;
}
static bool trans_lf_itof_s(DisasContext *dc, arg_da *a, uint32_t insn)
{
- LOG_DIS("lf.itof.s r%d, r%d\n", a->d, a->a);
do_fp2(dc, a, gen_helper_itofs);
return true;
}
static bool trans_lf_ftoi_s(DisasContext *dc, arg_da *a, uint32_t insn)
{
- LOG_DIS("lf.ftoi.s r%d, r%d\n", a->d, a->a);
do_fp2(dc, a, gen_helper_ftois);
return true;
}
static bool trans_lf_madd_s(DisasContext *dc, arg_dab *a, uint32_t insn)
{
- LOG_DIS("lf.madd.s r%d, r%d, r%d\n", a->d, a->a, a->b);
check_r0_write(a->d);
gen_helper_float_madd_s(cpu_R[a->d], cpu_env, cpu_R[a->d],
cpu_R[a->a], cpu_R[a->b]);
static bool trans_lf_sfeq_s(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("lf.sfeq.s r%d, r%d\n", a->a, a->b);
do_fpcmp(dc, a, gen_helper_float_eq_s, false, false);
return true;
}
static bool trans_lf_sfne_s(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("lf.sfne.s r%d, r%d\n", a->a, a->b);
do_fpcmp(dc, a, gen_helper_float_eq_s, true, false);
return true;
}
static bool trans_lf_sfgt_s(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("lf.sfgt.s r%d, r%d\n", a->a, a->b);
do_fpcmp(dc, a, gen_helper_float_lt_s, false, true);
return true;
}
static bool trans_lf_sfge_s(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("lf.sfge.s r%d, r%d\n", a->a, a->b);
do_fpcmp(dc, a, gen_helper_float_le_s, false, true);
return true;
}
static bool trans_lf_sflt_s(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("lf.sflt.s r%d, r%d\n", a->a, a->b);
do_fpcmp(dc, a, gen_helper_float_lt_s, false, false);
return true;
}
static bool trans_lf_sfle_s(DisasContext *dc, arg_ab *a, uint32_t insn)
{
- LOG_DIS("lf.sfle.s r%d, r%d\n", a->a, a->b);
do_fpcmp(dc, a, gen_helper_float_le_s, false, false);
return true;
}
dc->mem_idx = cpu_mmu_index(env, false);
dc->tb_flags = dc->base.tb->flags;
dc->delayed_branch = (dc->tb_flags & TB_FLAGS_DFLAG) != 0;
+ dc->jmp_pc_imm = -1;
+
bound = -(dc->base.pc_first | TARGET_PAGE_MASK) / 4;
dc->base.max_insns = MIN(dc->base.max_insns, bound);
}
}
dc->base.pc_next += 4;
- /* delay slot */
- if (dc->delayed_branch) {
- dc->delayed_branch--;
- if (!dc->delayed_branch) {
- tcg_gen_mov_tl(cpu_pc, jmp_pc);
- tcg_gen_discard_tl(jmp_pc);
- dc->base.is_jmp = DISAS_UPDATE;
- return;
- }
+ /* When exiting the delay slot normally, exit via jmp_pc.
+ * For DISAS_NORETURN, we have raised an exception and already exited.
+ * For DISAS_EXIT, we found l.rfe in a delay slot. There's nothing
+ * in the manual saying this is illegal, but it surely it should.
+ * At least or1ksim overrides pcnext and ignores the branch.
+ */
+ if (dc->delayed_branch
+ && --dc->delayed_branch == 0
+ && dc->base.is_jmp == DISAS_NEXT) {
+ dc->base.is_jmp = DISAS_JUMP;
}
}
static void openrisc_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
{
DisasContext *dc = container_of(dcbase, DisasContext, base);
+ target_ulong jmp_dest;
+
+ /* If we have already exited the TB, nothing following has effect. */
+ if (dc->base.is_jmp == DISAS_NORETURN) {
+ return;
+ }
+ /* Adjust the delayed branch state for the next TB. */
if ((dc->tb_flags & TB_FLAGS_DFLAG ? 1 : 0) != (dc->delayed_branch != 0)) {
tcg_gen_movi_i32(cpu_dflag, dc->delayed_branch != 0);
}
- tcg_gen_movi_tl(cpu_ppc, dc->base.pc_next - 4);
- if (dc->base.is_jmp == DISAS_NEXT) {
- dc->base.is_jmp = DISAS_UPDATE;
- tcg_gen_movi_tl(cpu_pc, dc->base.pc_next);
- }
- if (unlikely(dc->base.singlestep_enabled)) {
- gen_exception(dc, EXCP_DEBUG);
- } else {
- switch (dc->base.is_jmp) {
- case DISAS_TOO_MANY:
- gen_goto_tb(dc, 0, dc->base.pc_next);
- break;
- case DISAS_NORETURN:
- case DISAS_JUMP:
- case DISAS_TB_JUMP:
- break;
- case DISAS_UPDATE:
- /* indicate that the hash table must be used
- to find the next TB */
- tcg_gen_exit_tb(0);
+ /* For DISAS_TOO_MANY, jump to the next insn. */
+ jmp_dest = dc->base.pc_next;
+ tcg_gen_movi_tl(cpu_ppc, jmp_dest - 4);
+
+ switch (dc->base.is_jmp) {
+ case DISAS_JUMP:
+ jmp_dest = dc->jmp_pc_imm;
+ if (jmp_dest == -1) {
+ /* The jump destination is indirect/computed; use jmp_pc. */
+ tcg_gen_mov_tl(cpu_pc, jmp_pc);
+ tcg_gen_discard_tl(jmp_pc);
+ if (unlikely(dc->base.singlestep_enabled)) {
+ gen_exception(dc, EXCP_DEBUG);
+ } else {
+ tcg_gen_lookup_and_goto_ptr();
+ }
break;
- default:
- g_assert_not_reached();
}
+ /* The jump destination is direct; use jmp_pc_imm.
+ However, we will have stored into jmp_pc as well;
+ we know now that it wasn't needed. */
+ tcg_gen_discard_tl(jmp_pc);
+ /* fallthru */
+
+ case DISAS_TOO_MANY:
+ if (unlikely(dc->base.singlestep_enabled)) {
+ tcg_gen_movi_tl(cpu_pc, jmp_dest);
+ gen_exception(dc, EXCP_DEBUG);
+ } else if ((dc->base.pc_first ^ jmp_dest) & TARGET_PAGE_MASK) {
+ tcg_gen_movi_tl(cpu_pc, jmp_dest);
+ tcg_gen_lookup_and_goto_ptr();
+ } else {
+ tcg_gen_goto_tb(0);
+ tcg_gen_movi_tl(cpu_pc, jmp_dest);
+ tcg_gen_exit_tb(dc->base.tb, 0);
+ }
+ break;
+
+ case DISAS_EXIT:
+ if (unlikely(dc->base.singlestep_enabled)) {
+ gen_exception(dc, EXCP_DEBUG);
+ } else {
+ tcg_gen_exit_tb(NULL, 0);
+ }
+ break;
+ default:
+ g_assert_not_reached();
}
}
projects / qemu.git / blobdiff