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target/arm: Decode PAuth within system hint space

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Backports commit 7c94c8343c6a0eea1633a65ed27987b6a71b9089 from qemu
This commit is contained in:
Richard Henderson 2019-01-22 15:32:08 -05:00 committed by Lioncash
parent e6196b2040
commit 02fd7e2472
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 82 additions and 12 deletions
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94
qemu/target/arm/translate-a64.c
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@ -1538,6 +1538,7 @@ static void disas_cond_b_imm(DisasContext *s, uint32_t insn)
static void handle_hint(DisasContext *s, uint32_t insn,
unsigned int op1, unsigned int op2, unsigned int crm)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;
unsigned int selector = crm << 3 | op2;
if (op1 != 3) {
@ -1546,28 +1547,97 @@ static void handle_hint(DisasContext *s, uint32_t insn,
}
switch (selector) {
case 0: /* NOP */
return;
case 3: /* WFI */
case 0b00000: /* NOP */
break;
case 0b00011: /* WFI */
s->base.is_jmp = DISAS_WFI;
return;
case 1: /* YIELD */
break;
case 0b00001: /* YIELD */
if (!s->uc->parallel_cpus) {
s->base.is_jmp = DISAS_YIELD;
}
return;
case 2: /* WFE */
break;
case 0b00010: /* WFE */
if (!s->uc->parallel_cpus) {
s->base.is_jmp = DISAS_WFE;
}
return;
case 4: /* SEV */
case 5: /* SEVL */
break;
case 0b00100: /* SEV */
case 0b00101: /* SEVL */
/* we treat all as NOP at least for now */
return;
break;
case 0b00111: /* XPACLRI */
if (s->pauth_active) {
gen_helper_xpaci(tcg_ctx, tcg_ctx->cpu_X[30], tcg_ctx->cpu_env, tcg_ctx->cpu_X[30]);
}
break;
case 0b01000: /* PACIA1716 */
if (s->pauth_active) {
gen_helper_pacia(tcg_ctx, tcg_ctx->cpu_X[17], tcg_ctx->cpu_env, tcg_ctx->cpu_X[17], tcg_ctx->cpu_X[16]);
}
break;
case 0b01010: /* PACIB1716 */
if (s->pauth_active) {
gen_helper_pacib(tcg_ctx, tcg_ctx->cpu_X[17], tcg_ctx->cpu_env, tcg_ctx->cpu_X[17], tcg_ctx->cpu_X[16]);
}
break;
case 0b01100: /* AUTIA1716 */
if (s->pauth_active) {
gen_helper_autia(tcg_ctx, tcg_ctx->cpu_X[17], tcg_ctx->cpu_env, tcg_ctx->cpu_X[17], tcg_ctx->cpu_X[16]);
}
break;
case 0b01110: /* AUTIB1716 */
if (s->pauth_active) {
gen_helper_autib(tcg_ctx, tcg_ctx->cpu_X[17], tcg_ctx->cpu_env, tcg_ctx->cpu_X[17], tcg_ctx->cpu_X[16]);
}
break;
case 0b11000: /* PACIAZ */
if (s->pauth_active) {
gen_helper_pacia(tcg_ctx, tcg_ctx->cpu_X[30], tcg_ctx->cpu_env, tcg_ctx->cpu_X[30],
new_tmp_a64_zero(s));
}
break;
case 0b11001: /* PACIASP */
if (s->pauth_active) {
gen_helper_pacia(tcg_ctx, tcg_ctx->cpu_X[30], tcg_ctx->cpu_env, tcg_ctx->cpu_X[30], tcg_ctx->cpu_X[31]);
}
break;
case 0b11010: /* PACIBZ */
if (s->pauth_active) {
gen_helper_pacib(tcg_ctx, tcg_ctx->cpu_X[30], tcg_ctx->cpu_env, tcg_ctx->cpu_X[30],
new_tmp_a64_zero(s));
}
break;
case 0b11011: /* PACIBSP */
if (s->pauth_active) {
gen_helper_pacib(tcg_ctx, tcg_ctx->cpu_X[30], tcg_ctx->cpu_env, tcg_ctx->cpu_X[30], tcg_ctx->cpu_X[31]);
}
break;
case 0b11100: /* AUTIAZ */
if (s->pauth_active) {
gen_helper_autia(tcg_ctx, tcg_ctx->cpu_X[30], tcg_ctx->cpu_env, tcg_ctx->cpu_X[30],
new_tmp_a64_zero(s));
}
break;
case 0b11101: /* AUTIASP */
if (s->pauth_active) {
gen_helper_autia(tcg_ctx, tcg_ctx->cpu_X[30], tcg_ctx->cpu_env, tcg_ctx->cpu_X[30], tcg_ctx->cpu_X[31]);
}
break;
case 0b11110: /* AUTIBZ */
if (s->pauth_active) {
gen_helper_autib(tcg_ctx, tcg_ctx->cpu_X[30], tcg_ctx->cpu_env, tcg_ctx->cpu_X[30],
new_tmp_a64_zero(s));
}
break;
case 0b11111: /* AUTIBSP */
if (s->pauth_active) {
gen_helper_autib(tcg_ctx, tcg_ctx->cpu_X[30], tcg_ctx->cpu_env, tcg_ctx->cpu_X[30], tcg_ctx->cpu_X[31]);
}
break;
default:
/* default specified as NOP equivalent */
return;
break;
}
}