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Diffstat (limited to 'target-mips/translate.c')
-rw-r--r--target-mips/translate.c141
1 files changed, 98 insertions, 43 deletions
diff --git a/target-mips/translate.c b/target-mips/translate.c
index bb8128401f..418a7afa03 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -338,17 +338,25 @@ static inline void save_cpu_state (DisasContext *ctx, int do_save_pc)
}
}
-static inline void generate_exception (DisasContext *ctx, int excp)
+static inline void generate_exception_err (DisasContext *ctx, int excp, int err)
{
#if defined MIPS_DEBUG_DISAS
if (loglevel & CPU_LOG_TB_IN_ASM)
fprintf(logfile, "%s: raise exception %d\n", __func__, excp);
#endif
save_cpu_state(ctx, 1);
- gen_op_raise_exception(excp);
+ if (err == 0)
+ gen_op_raise_exception(excp);
+ else
+ gen_op_raise_exception_err(excp, err);
ctx->bstate = BS_EXCP;
}
+static inline void generate_exception (DisasContext *ctx, int excp)
+{
+ generate_exception_err (ctx, excp, 0);
+}
+
#if defined(CONFIG_USER_ONLY)
#define op_ldst(name) gen_op_##name##_raw()
#define OP_LD_TABLE(width)
@@ -1020,14 +1028,14 @@ static void gen_compute_branch (DisasContext *ctx, uint16_t opc,
case OPC_BLEZ: /* 0 <= 0 */
case OPC_BLEZL: /* 0 <= 0 likely */
/* Always take */
- ctx->hflags |= MIPS_HFLAG_DS | MIPS_HFLAG_B;
+ ctx->hflags |= MIPS_HFLAG_B;
MIPS_DEBUG("balways");
break;
case OPC_BGEZAL: /* 0 >= 0 */
case OPC_BGEZALL: /* 0 >= 0 likely */
/* Always take and link */
blink = 31;
- ctx->hflags |= MIPS_HFLAG_DS | MIPS_HFLAG_B;
+ ctx->hflags |= MIPS_HFLAG_B;
MIPS_DEBUG("balways and link");
break;
case OPC_BNE: /* rx != rx */
@@ -1053,21 +1061,21 @@ static void gen_compute_branch (DisasContext *ctx, uint16_t opc,
gen_goto_tb(ctx, 0, ctx->pc + 4);
return;
case OPC_J:
- ctx->hflags |= MIPS_HFLAG_DS | MIPS_HFLAG_B;
+ ctx->hflags |= MIPS_HFLAG_B;
MIPS_DEBUG("j %08x", btarget);
break;
case OPC_JAL:
blink = 31;
- ctx->hflags |= MIPS_HFLAG_DS | MIPS_HFLAG_B;
+ ctx->hflags |= MIPS_HFLAG_B;
MIPS_DEBUG("jal %08x", btarget);
break;
case OPC_JR:
- ctx->hflags |= MIPS_HFLAG_DS | MIPS_HFLAG_BR;
+ ctx->hflags |= MIPS_HFLAG_BR;
MIPS_DEBUG("jr %s", regnames[rs]);
break;
case OPC_JALR:
blink = rt;
- ctx->hflags |= MIPS_HFLAG_DS | MIPS_HFLAG_BR;
+ ctx->hflags |= MIPS_HFLAG_BR;
MIPS_DEBUG("jalr %s, %s", regnames[rt], regnames[rs]);
break;
default:
@@ -1144,14 +1152,14 @@ static void gen_compute_branch (DisasContext *ctx, uint16_t opc,
blink = 31;
MIPS_DEBUG("bltzal %s, %08x", regnames[rs], btarget);
not_likely:
- ctx->hflags |= MIPS_HFLAG_DS | MIPS_HFLAG_BC;
+ ctx->hflags |= MIPS_HFLAG_BC;
break;
case OPC_BLTZALL:
gen_op_ltz();
blink = 31;
MIPS_DEBUG("bltzall %s, %08x", regnames[rs], btarget);
likely:
- ctx->hflags |= MIPS_HFLAG_DS | MIPS_HFLAG_BL;
+ ctx->hflags |= MIPS_HFLAG_BL;
break;
}
gen_op_set_bcond();
@@ -1178,7 +1186,7 @@ static void gen_cp0 (DisasContext *ctx, uint16_t opc, int rt, int rd)
if (loglevel & CPU_LOG_TB_IN_ASM) {
fprintf(logfile, "CP0 is not usable\n");
}
- gen_op_raise_exception_err(EXCP_CpU, 0);
+ generate_exception_err (ctx, EXCP_CpU, 0);
return;
}
switch (opc) {
@@ -1236,7 +1244,15 @@ static void gen_cp0 (DisasContext *ctx, uint16_t opc, int rt, int rd)
ctx->bstate = BS_EXCP;
}
break;
- /* XXX: TODO: WAIT */
+ case OPC_WAIT:
+ opn = "wait";
+ /* If we get an exception, we want to restart at next instruction */
+ ctx->pc += 4;
+ save_cpu_state(ctx, 1);
+ ctx->pc -= 4;
+ gen_op_wait();
+ ctx->bstate = BS_EXCP;
+ break;
default:
if (loglevel & CPU_LOG_TB_IN_ASM) {
fprintf(logfile, "Invalid CP0 opcode: %08x %03x %03x %03x\n",
@@ -1292,7 +1308,7 @@ static void gen_blikely(DisasContext *ctx)
int l1;
l1 = gen_new_label();
gen_op_jnz_T2(l1);
- gen_op_save_state(ctx->hflags & ~(MIPS_HFLAG_BMASK | MIPS_HFLAG_DS));
+ gen_op_save_state(ctx->hflags & ~MIPS_HFLAG_BMASK);
gen_goto_tb(ctx, 1, ctx->pc + 4);
gen_set_label(l1);
}
@@ -1304,8 +1320,7 @@ static void decode_opc (DisasContext *ctx)
uint16_t op, op1;
int16_t imm;
- if ((ctx->hflags & MIPS_HFLAG_DS) &&
- (ctx->hflags & MIPS_HFLAG_BL)) {
+ if ((ctx->hflags & MIPS_HFLAG_BMASK) == MIPS_HFLAG_BL) {
/* Handle blikely not taken case */
MIPS_DEBUG("blikely condition (%08x)", ctx->pc + 4);
gen_blikely(ctx);
@@ -1361,9 +1376,16 @@ static void decode_opc (DisasContext *ctx)
case 0x05: /* Pmon entry point */
gen_op_pmon((ctx->opcode >> 6) & 0x1F);
break;
-#if defined (MIPS_HAS_MOVCI)
+
case 0x01: /* MOVCI */
+#if defined (MIPS_HAS_MOVCI)
+ /* XXX */
+#else
+ /* Not implemented */
+ generate_exception_err (ctx, EXCP_CpU, 1);
#endif
+ break;
+
#if defined (TARGET_MIPS64)
case 0x14: /* MIPS64 specific opcodes */
case 0x16:
@@ -1438,7 +1460,7 @@ static void decode_opc (DisasContext *ctx)
gen_cp0(ctx, op1 | EXT_CP0, rt, rd);
break;
default:
- gen_cp0(ctx, (ctx->opcode & 0x1F) | EXT_CP0, rt, rd);
+ gen_cp0(ctx, (ctx->opcode & 0x3F) | EXT_CP0, rt, rd);
break;
}
break;
@@ -1467,23 +1489,35 @@ static void decode_opc (DisasContext *ctx)
break;
case 0x3F: /* HACK */
break;
+
+ /* Floating point. */
+ case 0x31: /* LWC1 */
+ case 0x35: /* LDC1 */
+ case 0x39: /* SWC1 */
+ case 0x3D: /* SDC1 */
+ case 0x11: /* CP1 opcode */
#if defined(MIPS_USES_FPU)
- case 0x31 ... 0x32: /* Floating point load/store */
- case 0x35 ... 0x36:
- case 0x3A ... 0x3B:
- case 0x3D ... 0x3E:
- /* Not implemented */
/* XXX: not correct */
+#else
+ generate_exception_err(ctx, EXCP_CpU, 1);
#endif
- case 0x11: /* CP1 opcode */
- /* Not implemented */
- /* XXX: not correct */
+ break;
+
+ /* COP2. */
+ case 0x32: /* LWC2 */
+ case 0x36: /* LDC2 */
+ case 0x3A: /* SWC2 */
+ case 0x3E: /* SDC2 */
case 0x12: /* CP2 opcode */
/* Not implemented */
- /* XXX: not correct */
+ generate_exception_err(ctx, EXCP_CpU, 2);
+ break;
+
case 0x13: /* CP3 opcode */
/* Not implemented */
- /* XXX: not correct */
+ generate_exception_err(ctx, EXCP_CpU, 3);
+ break;
+
#if defined (TARGET_MIPS64)
case 0x18 ... 0x1B:
case 0x27:
@@ -1497,21 +1531,15 @@ static void decode_opc (DisasContext *ctx)
#endif
case 0x1E:
/* ASE specific */
-#if defined (MIPS_HAS_LSC)
- case 0x31: /* LWC1 */
- case 0x32: /* LWC2 */
- case 0x35: /* SDC1 */
- case 0x36: /* SDC2 */
-#endif
default: /* Invalid */
MIPS_INVAL("");
generate_exception(ctx, EXCP_RI);
break;
}
- if (ctx->hflags & MIPS_HFLAG_DS) {
+ if (ctx->hflags & MIPS_HFLAG_BMASK) {
int hflags = ctx->hflags;
/* Branches completion */
- ctx->hflags &= ~(MIPS_HFLAG_BMASK | MIPS_HFLAG_DS);
+ ctx->hflags &= ~MIPS_HFLAG_BMASK;
ctx->bstate = BS_BRANCH;
save_cpu_state(ctx, 0);
switch (hflags & MIPS_HFLAG_BMASK) {
@@ -1557,16 +1585,20 @@ int gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
uint16_t *gen_opc_end;
int j, lj = -1;
+ if (search_pc && loglevel)
+ fprintf (logfile, "search pc %d\n", search_pc);
+
pc_start = tb->pc;
gen_opc_ptr = gen_opc_buf;
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
gen_opparam_ptr = gen_opparam_buf;
nb_gen_labels = 0;
ctx.pc = pc_start;
+ ctx.saved_pc = -1;
ctx.tb = tb;
ctx.bstate = BS_NONE;
- /* Restore delay slot state */
- ctx.hflags = env->hflags;
+ /* Restore delay slot state from the tb context. */
+ ctx.hflags = tb->flags;
ctx.saved_hflags = ctx.hflags;
if (ctx.hflags & MIPS_HFLAG_BR) {
gen_op_restore_breg_target();
@@ -1588,42 +1620,65 @@ int gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
#ifdef DEBUG_DISAS
if (loglevel & CPU_LOG_TB_CPU) {
fprintf(logfile, "------------------------------------------------\n");
+ /* FIXME: This may print out stale hflags from env... */
cpu_dump_state(env, logfile, fprintf, 0);
}
#endif
#if defined MIPS_DEBUG_DISAS
if (loglevel & CPU_LOG_TB_IN_ASM)
- fprintf(logfile, "\ntb %p super %d cond %04x %04x\n",
- tb, ctx.mem_idx, ctx.hflags, env->hflags);
+ fprintf(logfile, "\ntb %p super %d cond %04x\n",
+ tb, ctx.mem_idx, ctx.hflags);
#endif
while (ctx.bstate == BS_NONE && gen_opc_ptr < gen_opc_end) {
+ if (env->nb_breakpoints > 0) {
+ for(j = 0; j < env->nb_breakpoints; j++) {
+ if (env->breakpoints[j] == ctx.pc) {
+ save_cpu_state(ctxp, 1);
+ ctx.bstate = BS_BRANCH;
+ gen_op_debug();
+ goto done_generating;
+ }
+ }
+ }
+
if (search_pc) {
j = gen_opc_ptr - gen_opc_buf;
- save_cpu_state(ctxp, 1);
if (lj < j) {
lj++;
while (lj < j)
gen_opc_instr_start[lj++] = 0;
- gen_opc_pc[lj] = ctx.pc;
- gen_opc_instr_start[lj] = 1;
}
+ gen_opc_pc[lj] = ctx.pc;
+ gen_opc_hflags[lj] = ctx.hflags & MIPS_HFLAG_BMASK;
+ gen_opc_instr_start[lj] = 1;
}
ctx.opcode = ldl_code(ctx.pc);
decode_opc(&ctx);
ctx.pc += 4;
+
+ if (env->singlestep_enabled)
+ break;
+
if ((ctx.pc & (TARGET_PAGE_SIZE - 1)) == 0)
break;
+
#if defined (MIPS_SINGLE_STEP)
break;
#endif
}
- if (ctx.bstate != BS_BRANCH && ctx.bstate != BS_EXCP) {
+ if (env->singlestep_enabled) {
+ save_cpu_state(ctxp, ctx.bstate == BS_NONE);
+ gen_op_debug();
+ goto done_generating;
+ }
+ else if (ctx.bstate != BS_BRANCH && ctx.bstate != BS_EXCP) {
save_cpu_state(ctxp, 0);
gen_goto_tb(&ctx, 0, ctx.pc);
}
gen_op_reset_T0();
/* Generate the return instruction */
gen_op_exit_tb();
+done_generating:
*gen_opc_ptr = INDEX_op_end;
if (search_pc) {
j = gen_opc_ptr - gen_opc_buf;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 00:46:25 +0000