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target-mips: make gen_compute_branch 16/32-bit-aware

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Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Nathan Froyd 2009-12-08 08:06:25 -08:00 committed by Aurelien Jarno
parent ea63e2c358
commit 7dca4ad050
1 changed files with 8 additions and 7 deletions
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15
target-mips/translate.c
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@ -2390,6 +2390,7 @@ static inline void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
/* Branches (before delay slot) */
static void gen_compute_branch (DisasContext *ctx, uint32_t opc,
int insn_bytes,
int rs, int rt, int32_t offset)
{
target_ulong btgt = -1;
@ -2418,7 +2419,7 @@ static void gen_compute_branch (DisasContext *ctx, uint32_t opc,
gen_load_gpr(t1, rt);
bcond_compute = 1;
}
btgt = ctx->pc + 4 + offset;
btgt = ctx->pc + insn_bytes + offset;
break;
case OPC_BGEZ:
case OPC_BGEZAL:
@ -2437,12 +2438,12 @@ static void gen_compute_branch (DisasContext *ctx, uint32_t opc,
gen_load_gpr(t0, rs);
bcond_compute = 1;
}
btgt = ctx->pc + 4 + offset;
btgt = ctx->pc + insn_bytes + offset;
break;
case OPC_J:
case OPC_JAL:
/* Jump to immediate */
btgt = ((ctx->pc + 4) & (int32_t)0xF0000000) | (uint32_t)offset;
btgt = ((ctx->pc + insn_bytes) & (int32_t)0xF0000000) | (uint32_t)offset;
break;
case OPC_JR:
case OPC_JALR:
@ -7654,7 +7655,7 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
gen_muldiv(ctx, op1, rs, rt);
break;
case OPC_JR ... OPC_JALR:
gen_compute_branch(ctx, op1, rs, rd, sa);
gen_compute_branch(ctx, op1, 4, rs, rd, sa);
return;
case OPC_TGE ... OPC_TEQ: /* Traps */
case OPC_TNE:
@ -7943,7 +7944,7 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
switch (op1) {
case OPC_BLTZ ... OPC_BGEZL: /* REGIMM branches */
case OPC_BLTZAL ... OPC_BGEZALL:
gen_compute_branch(ctx, op1, rs, -1, imm << 2);
gen_compute_branch(ctx, op1, 4, rs, -1, imm << 2);
return;
case OPC_TGEI ... OPC_TEQI: /* REGIMM traps */
case OPC_TNEI:
@ -8062,11 +8063,11 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
break;
case OPC_J ... OPC_JAL: /* Jump */
offset = (int32_t)(ctx->opcode & 0x3FFFFFF) << 2;
gen_compute_branch(ctx, op, rs, rt, offset);
gen_compute_branch(ctx, op, 4, rs, rt, offset);
return;
case OPC_BEQ ... OPC_BGTZ: /* Branch */
case OPC_BEQL ... OPC_BGTZL:
gen_compute_branch(ctx, op, rs, rt, imm << 2);
gen_compute_branch(ctx, op, 4, rs, rt, imm << 2);
return;
case OPC_LB ... OPC_LWR: /* Load and stores */
case OPC_SB ... OPC_SW: