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target/hppa: add TLB trace events 

To ease TLB debugging add a few trace events, which are disabled
by default so that there's no performance impact.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Message-Id: <20190311191602.25796-5-svens@stackframe.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Sven Schnelle 2019-03-11 20:15:55 +01:00 committed by Richard Henderson
parent acd6ba74d6
commit 23c3d569f4
4 changed files with 40 additions and 2 deletions
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1
Makefile.objs
View File

@ -182,6 +182,7 @@ trace-events-subdirs += qapi
trace-events-subdirs += qom
trace-events-subdirs += scsi
trace-events-subdirs += target/arm
trace-events-subdirs += target/hppa
trace-events-subdirs += target/i386
trace-events-subdirs += target/mips
trace-events-subdirs += target/ppc

21
target/hppa/mem_helper.c
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@ -22,6 +22,7 @@
#include "exec/exec-all.h"
#include "exec/helper-proto.h"
#include "qom/cpu.h"
#include "trace.h"
#ifdef CONFIG_USER_ONLY
int hppa_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
@ -43,9 +44,12 @@ static hppa_tlb_entry *hppa_find_tlb(CPUHPPAState *env, vaddr addr)
for (i = 0; i < ARRAY_SIZE(env->tlb); ++i) {
hppa_tlb_entry *ent = &env->tlb[i];
if (ent->va_b <= addr && addr <= ent->va_e) {
trace_hppa_tlb_find_entry(env, ent + i, ent->entry_valid,
ent->va_b, ent->va_e, ent->pa);
return ent;
}
}
trace_hppa_tlb_find_entry_not_found(env, addr);
return NULL;
}
@ -55,6 +59,8 @@ static void hppa_flush_tlb_ent(CPUHPPAState *env, hppa_tlb_entry *ent)
unsigned i, n = 1 << (2 * ent->page_size);
uint64_t addr = ent->va_b;
trace_hppa_tlb_flush_ent(env, ent, ent->va_b, ent->va_e, ent->pa);
for (i = 0; i < n; ++i, addr += TARGET_PAGE_SIZE) {
/* Do not flush MMU_PHYS_IDX. */
tlb_flush_page_by_mmuidx(cs, addr, 0xf);
@ -169,6 +175,7 @@ int hppa_get_physical_address(CPUHPPAState *env, vaddr addr, int mmu_idx,
egress:
*pphys = phys;
*pprot = prot;
trace_hppa_tlb_get_physical_address(env, ret, prot, addr, phys);
return ret;
}
@ -198,6 +205,7 @@ void tlb_fill(CPUState *cs, target_ulong addr, int size,
MMUAccessType type, int mmu_idx, uintptr_t retaddr)
{
HPPACPU *cpu = HPPA_CPU(cs);
CPUHPPAState *env = &cpu->env;
int prot, excp, a_prot;
hwaddr phys;
@ -213,9 +221,10 @@ void tlb_fill(CPUState *cs, target_ulong addr, int size,
break;
}
excp = hppa_get_physical_address(&cpu->env, addr, mmu_idx,
excp = hppa_get_physical_address(env, addr, mmu_idx,
a_prot, &phys, &prot);
if (unlikely(excp >= 0)) {
trace_hppa_tlb_fill_excp(env, addr, size, type, mmu_idx);
/* Failure. Raise the indicated exception. */
cs->exception_index = excp;
if (cpu->env.psw & PSW_Q) {
@ -226,6 +235,8 @@ void tlb_fill(CPUState *cs, target_ulong addr, int size,
cpu_loop_exit_restore(cs, retaddr);
}
trace_hppa_tlb_fill_success(env, addr & TARGET_PAGE_MASK,
phys & TARGET_PAGE_MASK, size, type, mmu_idx);
/* Success! Store the translation into the QEMU TLB. */
tlb_set_page(cs, addr & TARGET_PAGE_MASK, phys & TARGET_PAGE_MASK,
prot, mmu_idx, TARGET_PAGE_SIZE);
@ -259,6 +270,7 @@ void HELPER(itlba)(CPUHPPAState *env, target_ulong addr, target_ureg reg)
empty->va_b = addr & TARGET_PAGE_MASK;
empty->va_e = empty->va_b + TARGET_PAGE_SIZE - 1;
empty->pa = extract32(reg, 5, 20) << TARGET_PAGE_BITS;
trace_hppa_tlb_itlba(env, empty, empty->va_b, empty->va_e, empty->pa);
}
/* Insert (Insn/Data) TLB Protection. Note this is PA 1.1 only. */
@ -280,6 +292,8 @@ void HELPER(itlbp)(CPUHPPAState *env, target_ulong addr, target_ureg reg)
ent->d = extract32(reg, 28, 1);
ent->t = extract32(reg, 29, 1);
ent->entry_valid = 1;
trace_hppa_tlb_itlbp(env, ent, ent->access_id, ent->u, ent->ar_pl2,
ent->ar_pl1, ent->ar_type, ent->b, ent->d, ent->t);
}
/* Purge (Insn/Data) TLB. This is explicitly page-based, and is
@ -299,6 +313,7 @@ void HELPER(ptlb)(CPUHPPAState *env, target_ulong addr)
{
CPUState *src = CPU(hppa_env_get_cpu(env));
CPUState *cpu;
trace_hppa_tlb_ptlb(env);
run_on_cpu_data data = RUN_ON_CPU_TARGET_PTR(addr);
CPU_FOREACH(cpu) {
@ -314,7 +329,7 @@ void HELPER(ptlb)(CPUHPPAState *env, target_ulong addr)
void HELPER(ptlbe)(CPUHPPAState *env)
{
CPUState *src = CPU(hppa_env_get_cpu(env));
trace_hppa_tlb_ptlbe(env);
memset(env->tlb, 0, sizeof(env->tlb));
tlb_flush_by_mmuidx(src, 0xf);
}
@ -335,8 +350,10 @@ target_ureg HELPER(lpa)(CPUHPPAState *env, target_ulong addr)
if (excp == EXCP_DTLB_MISS) {
excp = EXCP_NA_DTLB_MISS;
}
trace_hppa_tlb_lpa_failed(env, addr);
hppa_dynamic_excp(env, excp, GETPC());
}
trace_hppa_tlb_lpa_success(env, addr, phys);
return phys;
}

2
target/hppa/op_helper.c
View File

@ -25,6 +25,7 @@
#include "sysemu/sysemu.h"
#include "qemu/timer.h"
#include "fpu/softfloat.h"
#include "trace.h"
void QEMU_NORETURN HELPER(excp)(CPUHPPAState *env, int excp)
{
@ -165,6 +166,7 @@ target_ureg HELPER(probe)(CPUHPPAState *env, target_ulong addr,
int prot, excp;
hwaddr phys;
trace_hppa_tlb_probe(addr, level, want);
/* Fail if the requested privilege level is higher than current. */
if (level < (env->iaoq_f & 3)) {
return 0;

18
target/hppa/trace-events Normal file
View File

@ -0,0 +1,18 @@
# See docs/devel/tracing.txt for syntax documentation.
# target/hppa/mem_helper.c
disable hppa_tlb_flush_ent(void *env, void *ent, uint64_t va_b, uint64_t va_e, uint64_t pa) "env=%p ent=%p va_b=0x%lx va_e=0x%lx pa=0x%lx"
disable hppa_tlb_find_entry(void *env, void *ent, int valid, uint64_t va_b, uint64_t va_e, uint64_t pa) "env=%p ent=%p valid=%d va_b=0x%lx va_e=0x%lx pa=0x%lx"
disable hppa_tlb_find_entry_not_found(void *env, uint64_t addr) "env=%p addr=%08lx"
disable hppa_tlb_get_physical_address(void *env, int ret, int prot, uint64_t addr, uint64_t phys) "env=%p ret=%d prot=%d addr=0x%lx phys=0x%lx"
disable hppa_tlb_fill_excp(void *env, uint64_t addr, int size, int type, int mmu_idx) "env=%p addr=0x%lx size=%d type=%d mmu_idx=%d"
disable hppa_tlb_fill_success(void *env, uint64_t addr, uint64_t phys, int size, int type, int mmu_idx) "env=%p addr=0x%lx phys=0x%lx size=%d type=%d mmu_idx=%d"
disable hppa_tlb_itlba(void *env, void *ent, uint64_t va_b, uint64_t va_e, uint64_t pa) "env=%p ent=%p va_b=0x%lx va_e=0x%lx pa=0x%lx"
disable hppa_tlb_itlbp(void *env, void *ent, int access_id, int u, int pl2, int pl1, int type, int b, int d, int t) "env=%p ent=%p access_id=%x u=%d pl2=%d pl1=%d type=%d b=%d d=%d t=%d"
disable hppa_tlb_ptlb(void *env) "env=%p"
disable hppa_tlb_ptlbe(void *env) "env=%p"
disable hppa_tlb_lpa_success(void *env, uint64_t addr, uint64_t phys) "env=%p addr=0x%lx phys=0x%lx"
disable hppa_tlb_lpa_failed(void *env, uint64_t addr) "env=%p addr=0x%lx"
# target/hppa/op_helper.c
disable hppa_tlb_probe(uint64_t addr, int level, int want) "addr=0x%lx level=%d want=%d"