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ARM: Fix decoding of VQSHL/VQSHLU immediate forms

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Fix errors in the decoding of ARM VQSHL/VQSHLU immediate forms,
including using the new VQSHLU helper functions where appropriate.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Peter Maydell 2011-01-08 16:01:16 +00:00 committed by Aurelien Jarno
parent 4ca4502c93
commit 0322b26e2d
1 changed files with 37 additions and 16 deletions
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53
target-arm/translate.c
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@ -4652,14 +4652,22 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn)
case 5: /* VSHL, VSLI */
gen_helper_neon_shl_u64(cpu_V0, cpu_V0, cpu_V1);
break;
case 6: /* VQSHL */
if (u)
gen_helper_neon_qshl_u64(cpu_V0, cpu_env, cpu_V0, cpu_V1);
else
gen_helper_neon_qshl_s64(cpu_V0, cpu_env, cpu_V0, cpu_V1);
case 6: /* VQSHLU */
if (u) {
gen_helper_neon_qshlu_s64(cpu_V0, cpu_env,
cpu_V0, cpu_V1);
} else {
return 1;
}
break;
case 7: /* VQSHLU */
gen_helper_neon_qshl_u64(cpu_V0, cpu_env, cpu_V0, cpu_V1);
case 7: /* VQSHL */
if (u) {
gen_helper_neon_qshl_u64(cpu_V0, cpu_env,
cpu_V0, cpu_V1);
} else {
gen_helper_neon_qshl_s64(cpu_V0, cpu_env,
cpu_V0, cpu_V1);
}
break;
}
if (op == 1 || op == 3) {
@ -4698,16 +4706,29 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn)
default: return 1;
}
break;
case 6: /* VQSHL */
GEN_NEON_INTEGER_OP_ENV(qshl);
break;
case 7: /* VQSHLU */
switch (size) {
case 0: gen_helper_neon_qshl_u8(tmp, cpu_env, tmp, tmp2); break;
case 1: gen_helper_neon_qshl_u16(tmp, cpu_env, tmp, tmp2); break;
case 2: gen_helper_neon_qshl_u32(tmp, cpu_env, tmp, tmp2); break;
default: return 1;
case 6: /* VQSHLU */
if (!u) {
return 1;
}
switch (size) {
case 0:
gen_helper_neon_qshlu_s8(tmp, cpu_env,
tmp, tmp2);
break;
case 1:
gen_helper_neon_qshlu_s16(tmp, cpu_env,
tmp, tmp2);
break;
case 2:
gen_helper_neon_qshlu_s32(tmp, cpu_env,
tmp, tmp2);
break;
default:
return 1;
}
break;
case 7: /* VQSHL */
GEN_NEON_INTEGER_OP_ENV(qshl);
break;
}
dead_tmp(tmp2);