Extend the existing watchpoint facility from TCG DAWR0 emulation
to DAWR1 on POWER10.
Reviewed-by: Nicholas Piggin <npiggin@xxxxxxxxx>
Reviewed-by: Harsh Prateek Bora <harshpb@xxxxxxxxxxxxx>
Signed-off-by: Shivaprasad G Bhat <sbhat@xxxxxxxxxxxxx>
---
---
target/ppc/cpu.c | 45 +++++++++++++++++++++++++----------
target/ppc/cpu.h | 6 +++--
target/ppc/cpu_init.c | 15 ++++++++++++
target/ppc/excp_helper.c | 59 ++++++++++++++++++++++++----------------------
target/ppc/helper.h | 2 ++
target/ppc/machine.c | 3 ++
target/ppc/misc_helper.c | 10 ++++++++
target/ppc/spr_common.h | 2 ++
target/ppc/translate.c | 12 +++++++++
9 files changed, 110 insertions(+), 44 deletions(-)
diff --git a/target/ppc/cpu.c b/target/ppc/cpu.c
index d148cd76b4..bfcc695de7 100644
--- a/target/ppc/cpu.c
+++ b/target/ppc/cpu.c
@@ -130,11 +130,13 @@ void ppc_store_ciabr(CPUPPCState *env, target_ulong val)
ppc_update_ciabr(env);
}
-void ppc_update_daw0(CPUPPCState *env)
+void ppc_update_daw(CPUPPCState *env, int rid)
{
CPUState *cs = env_cpu(env);
- target_ulong deaw = env->spr[SPR_DAWR0] & PPC_BITMASK(0, 60);
- uint32_t dawrx = env->spr[SPR_DAWRX0];
+ int spr_dawr = rid ? SPR_DAWR1 : SPR_DAWR0;
+ int spr_dawrx = rid ? SPR_DAWRX1 : SPR_DAWRX0;
+ target_ulong deaw = env->spr[spr_dawr] & PPC_BITMASK(0, 60);
+ uint32_t dawrx = env->spr[spr_dawrx];
int mrd = extract32(dawrx, PPC_BIT_NR(48), 54 - 48);
bool dw = extract32(dawrx, PPC_BIT_NR(57), 1);
bool dr = extract32(dawrx, PPC_BIT_NR(58), 1);
@@ -144,9 +146,9 @@ void ppc_update_daw0(CPUPPCState *env)
vaddr len;
int flags;
- if (env->dawr0_watchpoint) {
- cpu_watchpoint_remove_by_ref(cs, env->dawr0_watchpoint);
- env->dawr0_watchpoint = NULL;
+ if (env->dawr_watchpoint[rid]) {
+ cpu_watchpoint_remove_by_ref(cs, env->dawr_watchpoint[rid]);
+ env->dawr_watchpoint[rid] = NULL;
}
if (!dr && !dw) {
@@ -166,28 +168,45 @@ void ppc_update_daw0(CPUPPCState *env)
flags |= BP_MEM_WRITE;
}
- cpu_watchpoint_insert(cs, deaw, len, flags, &env->dawr0_watchpoint);
+ cpu_watchpoint_insert(cs, deaw, len, flags, &env->dawr_watchpoint[rid]);
}
void ppc_store_dawr0(CPUPPCState *env, target_ulong val)
{
env->spr[SPR_DAWR0] = val;
- ppc_update_daw0(env);
+ ppc_update_daw(env, 0);
}
-void ppc_store_dawrx0(CPUPPCState *env, uint32_t val)
+static void ppc_store_dawrx(CPUPPCState *env, uint32_t val, int rid)
{
int hrammc = extract32(val, PPC_BIT_NR(56), 1);
if (hrammc) {
/* This might be done with a second watchpoint at the xor of DEAW[0] */
- qemu_log_mask(LOG_UNIMP, "%s: DAWRX0[HRAMMC] is unimplemented\n",
- __func__);
+ qemu_log_mask(LOG_UNIMP, "%s: DAWRX%d[HRAMMC] is unimplemented\n",
+ __func__, rid);
}
- env->spr[SPR_DAWRX0] = val;
- ppc_update_daw0(env);
+ env->spr[rid ? SPR_DAWRX1 : SPR_DAWRX0] = val;
+ ppc_update_daw(env, rid);
+}
+
+void ppc_store_dawrx0(CPUPPCState *env, uint32_t val)
+{
+ ppc_store_dawrx(env, val, 0);
+}
+
+void ppc_store_dawr1(CPUPPCState *env, target_ulong val)
+{
+ env->spr[SPR_DAWR1] = val;
+ ppc_update_daw(env, 1);
+}
+
+void ppc_store_dawrx1(CPUPPCState *env, uint32_t val)
+{
+ ppc_store_dawrx(env, val, 1);
}
+
#endif
#endif
diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
index 0b8b4c0517..f6d4777e49 100644
--- a/target/ppc/cpu.h
+++ b/target/ppc/cpu.h
@@ -1260,7 +1260,7 @@ struct CPUArchState {
#if defined(TARGET_PPC64)
ppc_slb_t slb[MAX_SLB_ENTRIES]; /* PowerPC 64 SLB area */
struct CPUBreakpoint *ciabr_breakpoint;
- struct CPUWatchpoint *dawr0_watchpoint;
+ struct CPUWatchpoint *dawr_watchpoint[2];
#endif
target_ulong sr[32]; /* segment registers */
uint32_t nb_BATs; /* number of BATs */
@@ -1589,9 +1589,11 @@ void ppc_store_sdr1(CPUPPCState *env, target_ulong value);
void ppc_store_lpcr(PowerPCCPU *cpu, target_ulong val);
void ppc_update_ciabr(CPUPPCState *env);
void ppc_store_ciabr(CPUPPCState *env, target_ulong value);
-void ppc_update_daw0(CPUPPCState *env);
+void ppc_update_daw(CPUPPCState *env, int rid);
void ppc_store_dawr0(CPUPPCState *env, target_ulong value);
void ppc_store_dawrx0(CPUPPCState *env, uint32_t value);
+void ppc_store_dawr1(CPUPPCState *env, target_ulong value);
+void ppc_store_dawrx1(CPUPPCState *env, uint32_t value);
#endif /* !defined(CONFIG_USER_ONLY) */
void ppc_store_msr(CPUPPCState *env, target_ulong value);
diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
index c05c2dc42d..bc827c936a 100644
--- a/target/ppc/cpu_init.c
+++ b/target/ppc/cpu_init.c
@@ -5172,6 +5172,20 @@ static void register_book3s_207_dbg_sprs(CPUPPCState *env)
KVM_REG_PPC_CIABR, 0x00000000);
}
+static void register_book3s_310_dbg_sprs(CPUPPCState *env)
+{
+ spr_register_kvm_hv(env, SPR_DAWR1, "DAWR1",
+ SPR_NOACCESS, SPR_NOACCESS,
+ SPR_NOACCESS, SPR_NOACCESS,
+ &spr_read_generic, &spr_write_dawr1,
+ KVM_REG_PPC_DAWR1, 0x00000000);
+ spr_register_kvm_hv(env, SPR_DAWRX1, "DAWRX1",
+ SPR_NOACCESS, SPR_NOACCESS,
+ SPR_NOACCESS, SPR_NOACCESS,
+ &spr_read_generic, &spr_write_dawrx1,
+ KVM_REG_PPC_DAWRX1, 0x00000000);
+}
+
static void register_970_dbg_sprs(CPUPPCState *env)
{
/* Breakpoints */
@@ -6568,6 +6582,7 @@ static void init_proc_POWER10(CPUPPCState *env)
{
register_power9_common_sprs(env);
register_HEIR64_spr(env);
+ register_book3s_310_dbg_sprs(env);
register_power10_hash_sprs(env);
register_power10_dexcr_sprs(env);
register_power10_pmu_sup_sprs(env);
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index fde9912230..55b379d319 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -3279,39 +3279,42 @@ bool ppc_cpu_debug_check_watchpoint(CPUState *cs, CPUWatchpoint *wp)
{
#if defined(TARGET_PPC64)
CPUPPCState *env = cpu_env(cs);
+ bool wt, wti, hv, sv, pr;
+ uint32_t dawrx;
+
+ if ((env->insns_flags2 & PPC2_ISA207S) &&
+ (wp == env->dawr_watchpoint[0])) {
+ dawrx = env->spr[SPR_DAWRX0];
+ } else if ((env->insns_flags2 & PPC2_ISA310) &&
+ (wp == env->dawr_watchpoint[1])) {
+ dawrx = env->spr[SPR_DAWRX1];
+ } else {
+ return false;
+ }
- if (env->insns_flags2 & PPC2_ISA207S) {
- if (wp == env->dawr0_watchpoint) {
- uint32_t dawrx = env->spr[SPR_DAWRX0];
- bool wt = extract32(dawrx, PPC_BIT_NR(59), 1);
- bool wti = extract32(dawrx, PPC_BIT_NR(60), 1);
- bool hv = extract32(dawrx, PPC_BIT_NR(61), 1);
- bool sv = extract32(dawrx, PPC_BIT_NR(62), 1);
- bool pr = extract32(dawrx, PPC_BIT_NR(62), 1);
-
- if ((env->msr & ((target_ulong)1 << MSR_PR)) && !pr) {
- return false;
- } else if ((env->msr & ((target_ulong)1 << MSR_HV)) && !hv) {
- return false;
- } else if (!sv) {
- return false;
- }
+ wt = extract32(dawrx, PPC_BIT_NR(59), 1);
+ wti = extract32(dawrx, PPC_BIT_NR(60), 1);
+ hv = extract32(dawrx, PPC_BIT_NR(61), 1);
+ sv = extract32(dawrx, PPC_BIT_NR(62), 1);
+ pr = extract32(dawrx, PPC_BIT_NR(62), 1);
- if (!wti) {
- if (env->msr & ((target_ulong)1 << MSR_DR)) {
- if (!wt) {
- return false;
- }
- } else {
- if (wt) {
- return false;
- }
- }
- }
+ if ((env->msr & ((target_ulong)1 << MSR_PR)) && !pr) {
+ return false;
+ } else if ((env->msr & ((target_ulong)1 << MSR_HV)) && !hv) {
+ return false;
+ } else if (!sv) {
+ return false;
+ }
- return true;
+ if (!wti) {
+ if (env->msr & ((target_ulong)1 << MSR_DR)) {
+ return wt;
+ } else {
+ return !wt;
}
}
+
+ return true;
#endif
return false;
diff --git a/target/ppc/helper.h b/target/ppc/helper.h
index 5a77e761bd..3353b7cb73 100644
--- a/target/ppc/helper.h
+++ b/target/ppc/helper.h
@@ -28,6 +28,8 @@ DEF_HELPER_2(store_pcr, void, env, tl)
DEF_HELPER_2(store_ciabr, void, env, tl)
DEF_HELPER_2(store_dawr0, void, env, tl)
DEF_HELPER_2(store_dawrx0, void, env, tl)
+DEF_HELPER_2(store_dawr1, void, env, tl)
+DEF_HELPER_2(store_dawrx1, void, env, tl)
DEF_HELPER_2(store_mmcr0, void, env, tl)
DEF_HELPER_2(store_mmcr1, void, env, tl)
DEF_HELPER_2(store_mmcrA, void, env, tl)
diff --git a/target/ppc/machine.c b/target/ppc/machine.c
index 0bd7ae6c0c..98df5b4a3a 100644
--- a/target/ppc/machine.c
+++ b/target/ppc/machine.c
@@ -264,7 +264,8 @@ static int cpu_post_load(void *opaque, int version_id)
/* Re-set breaks based on regs */
#if defined(TARGET_PPC64)
ppc_update_ciabr(env);
- ppc_update_daw0(env);
+ ppc_update_daw(env, 0);
+ ppc_update_daw(env, 1);
#endif
/*
* TCG needs to re-start the decrementer timer and/or raise the
diff --git a/target/ppc/misc_helper.c b/target/ppc/misc_helper.c
index f0ca80153b..60a6b751e0 100644
--- a/target/ppc/misc_helper.c
+++ b/target/ppc/misc_helper.c
@@ -233,6 +233,16 @@ void helper_store_dawrx0(CPUPPCState *env, target_ulong value)
ppc_store_dawrx0(env, value);
}
+void helper_store_dawr1(CPUPPCState *env, target_ulong value)
+{
+ ppc_store_dawr1(env, value);
+}
+
+void helper_store_dawrx1(CPUPPCState *env, target_ulong value)
+{
+ ppc_store_dawrx1(env, value);
+}
+
/*
* DPDES register is shared. Each bit reflects the state of the
* doorbell interrupt of a thread of the same core.
diff --git a/target/ppc/spr_common.h b/target/ppc/spr_common.h
index 01aff449bc..5de5e8d35e 100644
--- a/target/ppc/spr_common.h
+++ b/target/ppc/spr_common.h
@@ -165,6 +165,8 @@ void spr_write_cfar(DisasContext *ctx, int sprn, int gprn);
void spr_write_ciabr(DisasContext *ctx, int sprn, int gprn);
void spr_write_dawr0(DisasContext *ctx, int sprn, int gprn);
void spr_write_dawrx0(DisasContext *ctx, int sprn, int gprn);
+void spr_write_dawr1(DisasContext *ctx, int sprn, int gprn);
+void spr_write_dawrx1(DisasContext *ctx, int sprn, int gprn);
void spr_write_ureg(DisasContext *ctx, int sprn, int gprn);
void spr_read_purr(DisasContext *ctx, int gprn, int sprn);
void spr_write_purr(DisasContext *ctx, int sprn, int gprn);
diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index 80638ab535..20d4dad2cb 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -637,6 +637,18 @@ void spr_write_dawrx0(DisasContext *ctx, int sprn, int gprn)
translator_io_start(&ctx->base);
gen_helper_store_dawrx0(tcg_env, cpu_gpr[gprn]);
}
+
+void spr_write_dawr1(DisasContext *ctx, int sprn, int gprn)
+{
+ translator_io_start(&ctx->base);
+ gen_helper_store_dawr1(tcg_env, cpu_gpr[gprn]);
+}
+
+void spr_write_dawrx1(DisasContext *ctx, int sprn, int gprn)
+{
+ translator_io_start(&ctx->base);
+ gen_helper_store_dawrx1(tcg_env, cpu_gpr[gprn]);
+}
#endif /* defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY) */
/* CTR */
