From: BALATON Zoltan <balaton@eik.bme.hu>
To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org
Cc: Nicholas Piggin <npiggin@gmail.com>,
Daniel Henrique Barboza <danielhb413@gmail.com>
Subject: [PATCH v4 03/33] target/ppc: Simplify syscall exception handlers
Date: Thu, 09 May 2024 01:36:05 +0200 (CEST) [thread overview]
Message-ID: <b6e6f31a8f7dc460f77f78e74337b84be48e03e2.1715209155.git.balaton@eik.bme.hu> (raw)
In-Reply-To: <cover.1715209155.git.balaton@eik.bme.hu>
After previous changes the hypercall handling in 7xx and 74xx
exception handlers can be folded into one if statement to simplify
this code. Also add "unlikely" to mark the less frequently used branch
for the compiler.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
---
target/ppc/excp_helper.c | 22 ++++++----------------
1 file changed, 6 insertions(+), 16 deletions(-)
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index 5aa84bccd2..d19212f772 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -762,26 +762,21 @@ static void powerpc_excp_7xx(PowerPCCPU *cpu, int excp)
case POWERPC_EXCP_SYSCALL: /* System call exception */
{
int lev = env->error_code;
-
- if (lev == 1 && cpu->vhyp) {
- dump_hcall(env);
- } else {
- dump_syscall(env);
- }
/*
* The Virtual Open Firmware (VOF) relies on the 'sc 1'
* instruction to communicate with QEMU. The pegasos2 machine
* uses VOF and the 7xx CPUs, so although the 7xx don't have
* HV mode, we need to keep hypercall support.
*/
- if (lev == 1 && cpu->vhyp) {
+ if (unlikely(lev == 1 && cpu->vhyp)) {
PPCVirtualHypervisorClass *vhc =
PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
+ dump_hcall(env);
vhc->hypercall(cpu->vhyp, cpu);
powerpc_reset_excp_state(cpu);
return;
}
-
+ dump_syscall(env);
break;
}
case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
@@ -907,26 +902,21 @@ static void powerpc_excp_74xx(PowerPCCPU *cpu, int excp)
case POWERPC_EXCP_SYSCALL: /* System call exception */
{
int lev = env->error_code;
-
- if (lev == 1 && cpu->vhyp) {
- dump_hcall(env);
- } else {
- dump_syscall(env);
- }
/*
* The Virtual Open Firmware (VOF) relies on the 'sc 1'
* instruction to communicate with QEMU. The pegasos2 machine
* uses VOF and the 74xx CPUs, so although the 74xx don't have
* HV mode, we need to keep hypercall support.
*/
- if (lev == 1 && cpu->vhyp) {
+ if (unlikely(lev == 1 && cpu->vhyp)) {
PPCVirtualHypervisorClass *vhc =
PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
+ dump_hcall(env);
vhc->hypercall(cpu->vhyp, cpu);
powerpc_reset_excp_state(cpu);
return;
}
-
+ dump_syscall(env);
break;
}
case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
--
2.30.9
next prev parent reply other threads:[~2024-05-08 23:43 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-08 23:36 [PATCH v4 00/33] Misc PPC exception and BookE MMU clean ups BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 01/33] target/ppc: Fix gen_sc to use correct nip BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 02/33] target/ppc: Move patching nip from exception handler to helper_scv BALATON Zoltan
2024-05-08 23:36 ` BALATON Zoltan [this message]
2024-05-08 23:36 ` [PATCH v4 04/33] target/ppc: Remove unused helper BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 05/33] target/ppc/mmu_common.c: Move calculation of a value closer to its usage BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 06/33] target/ppc/mmu_common.c: Remove unneeded local variable BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 07/33] target/ppc/mmu_common.c: Simplify checking for real mode BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 08/33] target/ppc/mmu_common.c: Drop cases for unimplemented MPC8xx MMU BALATON Zoltan
2024-05-09 6:01 ` Nicholas Piggin
2024-05-08 23:36 ` [PATCH v4 09/33] target/ppc/mmu_common.c: Introduce mmu6xx_get_physical_address() BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 10/33] target/ppc/mmu_common.c: Move else branch to avoid large if block BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 11/33] target/ppc/mmu_common.c: Move some debug logging BALATON Zoltan
2024-05-09 6:01 ` Nicholas Piggin
2024-05-08 23:36 ` [PATCH v4 12/33] target/ppc/mmu_common.c: Eliminate ret from mmu6xx_get_physical_address() BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 13/33] target/ppc/mmu_common.c: Split out BookE cases before checking real mode BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 14/33] target/ppc/mmu_common.c: Split off real mode cases in get_physical_address_wtlb() BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 15/33] target/ppc/mmu_common.c: Inline and remove check_physical() BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 16/33] target/ppc/mmu_common.c: Fix misindented qemu_log_mask() calls BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 17/33] target/ppc/mmu_common.c: Deindent ppc_jumbo_xlate() BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 18/33] target/ppc/mmu_common.c: Replace hard coded constants in ppc_jumbo_xlate() BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 19/33] target/ppc/mmu_common.c: Don't use mmu_ctx_t for mmu40x_get_physical_address() BALATON Zoltan
2024-05-09 6:13 ` Nicholas Piggin
2024-05-08 23:36 ` [PATCH v4 20/33] target/ppc/mmu_common.c: Don't use mmu_ctx_t in mmubooke_get_physical_address() BALATON Zoltan
2024-05-09 6:13 ` Nicholas Piggin
2024-05-08 23:36 ` [PATCH v4 21/33] target/ppc/mmu_common.c: Don't use mmu_ctx_t in mmubooke206_get_physical_address() BALATON Zoltan
2024-05-09 6:14 ` Nicholas Piggin
2024-05-08 23:36 ` [PATCH v4 22/33] target/ppc/mmu_common.c: Make get_physical_address_wtlb() static BALATON Zoltan
2024-05-09 6:17 ` Nicholas Piggin
2024-05-08 23:36 ` [PATCH v4 23/33] target/ppc: Remove pp_check() and reuse ppc_hash32_pp_prot() BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 24/33] target/ppc/mmu_common.c: Remove BookE from direct store handling BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 25/33] target/ppc/mmu_common.c: Split off BookE handling from ppc_jumbo_xlate() BALATON Zoltan
2024-05-09 6:17 ` Nicholas Piggin
2024-05-08 23:36 ` [PATCH v4 26/33] target/ppc/mmu_common.c: Simplify ppc_booke_xlate() part 1 BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 27/33] target/ppc/mmu_common.c: Simplify ppc_booke_xlate() part 2 BALATON Zoltan
2024-05-09 6:19 ` Nicholas Piggin
2024-05-08 23:36 ` [PATCH v4 28/33] target/ppc: Remove id_tlbs flag from CPU env BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 29/33] target/ppc: Split off common embedded TLB init BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 30/33] target/ppc/mmu-hash32.c: Drop a local variable BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 31/33] target/ppc/mmu-radix64.c: " BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 32/33] target/ppc: Add a macro to check for page protection bit BALATON Zoltan
2024-05-08 23:36 ` [PATCH v4 33/33] target/ppc: Move out BookE and related MMU functions from mmu_common.c BALATON Zoltan
2024-05-09 6:19 ` Nicholas Piggin
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