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target-arm/translate.c: Clean up mmu index handling for ldrt/strt 

Clean up the mmu index handling for ldrt/strt insns: instead
of a flag 'user' indicating whether to treat the store as user
mode or not, use 'memidx' to indicate the correct memory index to use.

Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1400980132-25949-3-git-send-email-edgar.iglesias@gmail.com
This commit is contained in:
Peter Maydell 2014-05-27 17:09:50 +01:00
parent 9d4c4e872e
commit a99caa48d8
1 changed files with 17 additions and 12 deletions
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29
target-arm/translate.c
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@ -8568,7 +8568,12 @@ static void disas_arm_insn(CPUARMState * env, DisasContext *s)
rn = (insn >> 16) & 0xf;
rd = (insn >> 12) & 0xf;
tmp2 = load_reg(s, rn);
i = (IS_USER(s) || (insn & 0x01200000) == 0x00200000);
if ((insn & 0x01200000) == 0x00200000) {
/* ldrt/strt */
i = MMU_USER_IDX;
} else {
i = get_mem_index(s);
}
if (insn & (1 << 24))
gen_add_data_offset(s, insn, tmp2);
if (insn & (1 << 20)) {
@ -9841,7 +9846,7 @@ static int disas_thumb2_insn(CPUARMState *env, DisasContext *s, uint16_t insn_hw
{
int postinc = 0;
int writeback = 0;
int user;
int memidx;
if ((insn & 0x01100000) == 0x01000000) {
if (disas_neon_ls_insn(env, s, insn))
goto illegal_op;
@ -9885,7 +9890,7 @@ static int disas_thumb2_insn(CPUARMState *env, DisasContext *s, uint16_t insn_hw
return 1;
}
}
user = IS_USER(s);
memidx = get_mem_index(s);
if (rn == 15) {
addr = tcg_temp_new_i32();
/* PC relative. */
@ -9922,7 +9927,7 @@ static int disas_thumb2_insn(CPUARMState *env, DisasContext *s, uint16_t insn_hw
break;
case 0xe: /* User privilege. */
tcg_gen_addi_i32(addr, addr, imm);
user = 1;
memidx = MMU_USER_IDX;
break;
case 0x9: /* Post-decrement. */
imm = -imm;
@ -9949,19 +9954,19 @@ static int disas_thumb2_insn(CPUARMState *env, DisasContext *s, uint16_t insn_hw
tmp = tcg_temp_new_i32();
switch (op) {
case 0:
gen_aa32_ld8u(tmp, addr, user);
gen_aa32_ld8u(tmp, addr, memidx);
break;
case 4:
gen_aa32_ld8s(tmp, addr, user);
gen_aa32_ld8s(tmp, addr, memidx);
break;
case 1:
gen_aa32_ld16u(tmp, addr, user);
gen_aa32_ld16u(tmp, addr, memidx);
break;
case 5:
gen_aa32_ld16s(tmp, addr, user);
gen_aa32_ld16s(tmp, addr, memidx);
break;
case 2:
gen_aa32_ld32u(tmp, addr, user);
gen_aa32_ld32u(tmp, addr, memidx);
break;
default:
tcg_temp_free_i32(tmp);
@ -9978,13 +9983,13 @@ static int disas_thumb2_insn(CPUARMState *env, DisasContext *s, uint16_t insn_hw
tmp = load_reg(s, rs);
switch (op) {
case 0:
gen_aa32_st8(tmp, addr, user);
gen_aa32_st8(tmp, addr, memidx);
break;
case 1:
gen_aa32_st16(tmp, addr, user);
gen_aa32_st16(tmp, addr, memidx);
break;
case 2:
gen_aa32_st32(tmp, addr, user);
gen_aa32_st32(tmp, addr, memidx);
break;
default:
tcg_temp_free_i32(tmp);