diff options
Diffstat (limited to 'target-sh4')
| -rw-r--r-- | target-sh4/translate.c | 67 |
1 files changed, 43 insertions, 24 deletions
diff --git a/target-sh4/translate.c b/target-sh4/translate.c index e170cab7ed..82f4168f41 100644 --- a/target-sh4/translate.c +++ b/target-sh4/translate.c @@ -48,6 +48,12 @@ typedef struct DisasContext { int singlestep_enabled; } DisasContext; +#if defined(CONFIG_USER_ONLY) +#define IS_USER(ctx) 1 +#else +#define IS_USER(ctx) (!(ctx->sr & SR_MD)) +#endif + enum { BS_NONE = 0, /* We go out of the TB without reaching a branch or an * exception condition @@ -449,6 +455,13 @@ static inline void gen_store_fpr64 (TCGv t, int reg) {tcg_gen_helper_0_0(helper_raise_slot_illegal_instruction); ctx->bstate = BS_EXCP; \ return;} +#define CHECK_PRIVILEGED \ + if (IS_USER(ctx)) { \ + tcg_gen_helper_0_0(helper_raise_illegal_instruction); \ + ctx->bstate = BS_EXCP; \ + return; \ + } + void _decode_opc(DisasContext * ctx) { #if 0 @@ -475,13 +488,11 @@ void _decode_opc(DisasContext * ctx) gen_clr_t(); return; case 0x0038: /* ldtlb */ -#if defined(CONFIG_USER_ONLY) - assert(0); /* XXXXX */ -#else + CHECK_PRIVILEGED tcg_gen_helper_0_0(helper_ldtlb); -#endif return; case 0x002b: /* rte */ + CHECK_PRIVILEGED CHECK_NOT_DELAY_SLOT tcg_gen_mov_i32(cpu_sr, cpu_ssr); tcg_gen_mov_i32(cpu_delayed_pc, cpu_spc); @@ -505,12 +516,8 @@ void _decode_opc(DisasContext * ctx) case 0x0009: /* nop */ return; case 0x001b: /* sleep */ - if (ctx->memidx) { - tcg_gen_helper_0_1(helper_sleep, tcg_const_i32(ctx->pc + 2)); - } else { - tcg_gen_helper_0_0(helper_raise_illegal_instruction); - ctx->bstate = BS_EXCP; - } + CHECK_PRIVILEGED + tcg_gen_helper_0_1(helper_sleep, tcg_const_i32(ctx->pc + 2)); return; } @@ -1351,16 +1358,20 @@ void _decode_opc(DisasContext * ctx) switch (ctx->opcode & 0xf08f) { case 0x408e: /* ldc Rm,Rn_BANK */ + CHECK_PRIVILEGED tcg_gen_mov_i32(ALTREG(B6_4), REG(B11_8)); return; case 0x4087: /* ldc.l @Rm+,Rn_BANK */ + CHECK_PRIVILEGED tcg_gen_qemu_ld32s(ALTREG(B6_4), REG(B11_8), ctx->memidx); tcg_gen_addi_i32(REG(B11_8), REG(B11_8), 4); return; case 0x0082: /* stc Rm_BANK,Rn */ + CHECK_PRIVILEGED tcg_gen_mov_i32(REG(B11_8), ALTREG(B6_4)); return; case 0x4083: /* stc.l Rm_BANK,@-Rn */ + CHECK_PRIVILEGED { TCGv addr = tcg_temp_new(TCG_TYPE_I32); tcg_gen_subi_i32(addr, REG(B11_8), 4); @@ -1408,11 +1419,13 @@ void _decode_opc(DisasContext * ctx) ctx->flags |= DELAY_SLOT; ctx->delayed_pc = (uint32_t) - 1; return; - case 0x400e: /* lds Rm,SR */ + case 0x400e: /* ldc Rm,SR */ + CHECK_PRIVILEGED tcg_gen_andi_i32(cpu_sr, REG(B11_8), 0x700083f3); ctx->bstate = BS_STOP; return; - case 0x4007: /* lds.l @Rm+,SR */ + case 0x4007: /* ldc.l @Rm+,SR */ + CHECK_PRIVILEGED { TCGv val = tcg_temp_new(TCG_TYPE_I32); tcg_gen_qemu_ld32s(val, REG(B11_8), ctx->memidx); @@ -1422,10 +1435,12 @@ void _decode_opc(DisasContext * ctx) ctx->bstate = BS_STOP; } return; - case 0x0002: /* sts SR,Rn */ + case 0x0002: /* stc SR,Rn */ + CHECK_PRIVILEGED tcg_gen_mov_i32(REG(B11_8), cpu_sr); return; - case 0x4003: /* sts SR,@-Rn */ + case 0x4003: /* stc SR,@-Rn */ + CHECK_PRIVILEGED { TCGv addr = tcg_temp_new(TCG_TYPE_I32); tcg_gen_subi_i32(addr, REG(B11_8), 4); @@ -1434,18 +1449,22 @@ void _decode_opc(DisasContext * ctx) tcg_gen_subi_i32(REG(B11_8), REG(B11_8), 4); } return; -#define LDST(reg,ldnum,ldpnum,stnum,stpnum) \ +#define LDST(reg,ldnum,ldpnum,stnum,stpnum,prechk) \ case ldnum: \ + prechk \ tcg_gen_mov_i32 (cpu_##reg, REG(B11_8)); \ return; \ case ldpnum: \ + prechk \ tcg_gen_qemu_ld32s (cpu_##reg, REG(B11_8), ctx->memidx); \ tcg_gen_addi_i32(REG(B11_8), REG(B11_8), 4); \ return; \ case stnum: \ + prechk \ tcg_gen_mov_i32 (REG(B11_8), cpu_##reg); \ return; \ case stpnum: \ + prechk \ { \ TCGv addr = tcg_temp_new(TCG_TYPE_I32); \ tcg_gen_subi_i32(addr, REG(B11_8), 4); \ @@ -1454,15 +1473,15 @@ void _decode_opc(DisasContext * ctx) tcg_gen_subi_i32(REG(B11_8), REG(B11_8), 4); \ } \ return; - LDST(gbr, 0x401e, 0x4017, 0x0012, 0x4013) - LDST(vbr, 0x402e, 0x4027, 0x0022, 0x4023) - LDST(ssr, 0x403e, 0x4037, 0x0032, 0x4033) - LDST(spc, 0x404e, 0x4047, 0x0042, 0x4043) - LDST(dbr, 0x40fa, 0x40f6, 0x00fa, 0x40f2) - LDST(mach, 0x400a, 0x4006, 0x000a, 0x4002) - LDST(macl, 0x401a, 0x4016, 0x001a, 0x4012) - LDST(pr, 0x402a, 0x4026, 0x002a, 0x4022) - LDST(fpul, 0x405a, 0x4056, 0x005a, 0x4052) + LDST(gbr, 0x401e, 0x4017, 0x0012, 0x4013, {}) + LDST(vbr, 0x402e, 0x4027, 0x0022, 0x4023, CHECK_PRIVILEGED) + LDST(ssr, 0x403e, 0x4037, 0x0032, 0x4033, CHECK_PRIVILEGED) + LDST(spc, 0x404e, 0x4047, 0x0042, 0x4043, CHECK_PRIVILEGED) + LDST(dbr, 0x40fa, 0x40f6, 0x00fa, 0x40f2, CHECK_PRIVILEGED) + LDST(mach, 0x400a, 0x4006, 0x000a, 0x4002, {}) + LDST(macl, 0x401a, 0x4016, 0x001a, 0x4012, {}) + LDST(pr, 0x402a, 0x4026, 0x002a, 0x4022, {}) + LDST(fpul, 0x405a, 0x4056, 0x005a, 0x4052, {}) case 0x406a: /* lds Rm,FPSCR */ tcg_gen_helper_0_1(helper_ld_fpscr, REG(B11_8)); ctx->bstate = BS_STOP; |