[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH v2 5/6] target/ppc: Add SRR1 prefix indication to interrupt handl
From: |
Nicholas Piggin |
Subject: |
[PATCH v2 5/6] target/ppc: Add SRR1 prefix indication to interrupt handlers |
Date: |
Mon, 27 Mar 2023 23:12:17 +1000 |
ISA v3.1 introduced prefix instructions. Among the changes, various
synchronous interrupts report whether they were caused by a prefix
instruction in (H)SRR1.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
Since v1:
- Use insns_flags instead of excp_model [Fabiano review]
target/ppc/excp_helper.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index 6ac003bcd5..4e119c4dfc 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -1346,12 +1346,21 @@ static bool books_vhyp_handles_hv_excp(PowerPCCPU *cpu)
return false;
}
+static bool is_prefix_excp(CPUPPCState *env, uint32_t insn)
+{
+ if (!(env->insns_flags2 & PPC2_ISA310)) {
+ return false;
+ }
+ return ((insn & 0xfc000000) == 0x04000000);
+}
+
static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
{
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
target_ulong msr, new_msr, vector;
int srr0, srr1, lev = -1;
+ uint32_t insn = 0;
/* new srr1 value excluding must-be-zero bits */
msr = env->msr & ~0x783f0000ULL;
@@ -1390,6 +1399,29 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
vector |= env->excp_prefix;
+ switch (excp) {
+ case POWERPC_EXCP_MCHECK:
+ case POWERPC_EXCP_DSI:
+ case POWERPC_EXCP_DSEG:
+ case POWERPC_EXCP_ALIGN:
+ case POWERPC_EXCP_PROGRAM:
+ case POWERPC_EXCP_FPU:
+ case POWERPC_EXCP_TRACE:
+ case POWERPC_EXCP_HDSI:
+ case POWERPC_EXCP_HV_EMU:
+ case POWERPC_EXCP_VPU:
+ case POWERPC_EXCP_VSXU:
+ case POWERPC_EXCP_FU:
+ case POWERPC_EXCP_HV_FU:
+ insn = ppc_ldl_code(env, env->nip);
+ if (is_prefix_excp(env, insn)) {
+ msr |= PPC_BIT(34);
+ }
+ break;
+ default:
+ break;
+ }
+
switch (excp) {
case POWERPC_EXCP_MCHECK: /* Machine check exception */
if (!FIELD_EX64(env->msr, MSR, ME)) {
--
2.37.2