Signed-off-by: Don Porter <porter@cs.unc.edu>
---
include/hw/core/sysemu-cpu-ops.h | 7 +
monitor/hmp-cmds-target.c | 1 +
target/i386/cpu.h | 2 +
target/i386/monitor.c | 217 ++++++-------------------------
4 files changed, 53 insertions(+), 174 deletions(-)
diff --git a/include/hw/core/sysemu-cpu-ops.h b/include/hw/core/sysemu-cpu-ops.h
index eb16a1c3e2..bf3de3e004 100644
--- a/include/hw/core/sysemu-cpu-ops.h
+++ b/include/hw/core/sysemu-cpu-ops.h
@@ -243,6 +243,13 @@ typedef struct SysemuCPUOps {
bool (*mon_flush_page_print_state)(CPUState *cs,
struct mem_print_state *state);
+ /**
+ * @mon_print_pte: Hook called by the monitor to print a page
+ * table entry at address addr, with contents pte.
+ */
+ void (*mon_print_pte) (Monitor *mon, CPUArchState *env, hwaddr addr,
+ hwaddr pte);
+
} SysemuCPUOps;
#endif /* SYSEMU_CPU_OPS_H */
diff --git a/monitor/hmp-cmds-target.c b/monitor/hmp-cmds-target.c
index 60a8bd0c37..3393e5ad0b 100644
--- a/monitor/hmp-cmds-target.c
+++ b/monitor/hmp-cmds-target.c
@@ -318,6 +318,7 @@ void hmp_info_pg(Monitor *mon, const QDict *qdict)
/* Print last entry, if one present */
cc->sysemu_ops->mon_flush_page_print_state(cs, &state);
}
+
static void memory_dump(Monitor *mon, int count, int format, int wsize,
hwaddr addr, int is_physical)
{
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index cbb6f6fc4d..1346ec0033 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -2167,6 +2167,8 @@ bool x86_mon_init_page_table_iterator(Monitor *mon,
struct mem_print_state *state);
void x86_mon_info_pg_print_header(Monitor *mon, struct mem_print_state *state);
bool x86_mon_flush_print_pg_state(CPUState *cs, struct mem_print_state *state);
+void x86_mon_print_pte(Monitor *mon, CPUArchState *env, hwaddr addr,
+ hwaddr pte);
void x86_cpu_dump_state(CPUState *cs, FILE *f, int flags);
diff --git a/target/i386/monitor.c b/target/i386/monitor.c
index 65e82e73e8..ecde164857 100644
--- a/target/i386/monitor.c
+++ b/target/i386/monitor.c
@@ -214,202 +214,71 @@ static hwaddr addr_canonical(CPUArchState *env, hwaddr addr)
return addr;
}
-static void print_pte(Monitor *mon, CPUArchState *env, hwaddr addr,
- hwaddr pte, hwaddr mask)
+void x86_mon_print_pte(Monitor *mon, CPUArchState *env, hwaddr addr,
+ hwaddr pte)
{
+ char buf[128];
+ char *pos = buf, *end = buf + sizeof(buf);
+
addr = addr_canonical(env, addr);
- monitor_printf(mon, HWADDR_FMT_plx ": " HWADDR_FMT_plx
- " %c%c%c%c%c%c%c%c%c\n",
- addr,
- pte & mask,
- pte & PG_NX_MASK ? 'X' : '-',
- pte & PG_GLOBAL_MASK ? 'G' : '-',
- pte & PG_PSE_MASK ? 'P' : '-',
- pte & PG_DIRTY_MASK ? 'D' : '-',
- pte & PG_ACCESSED_MASK ? 'A' : '-',
- pte & PG_PCD_MASK ? 'C' : '-',
- pte & PG_PWT_MASK ? 'T' : '-',
- pte & PG_USER_MASK ? 'U' : '-',
- pte & PG_RW_MASK ? 'W' : '-');
-}
+ pos += snprintf(pos, end - pos, HWADDR_FMT_plx ": " HWADDR_FMT_plx " ",
+ addr, (hwaddr) (pte & PG_ADDRESS_MASK));
-static void tlb_info_32(Monitor *mon, CPUArchState *env)
-{
- unsigned int l1, l2;
- uint32_t pgd, pde, pte;
+ pos += snprintf(pos, end - pos, " %s", pg_bits(pte));
- pgd = env->cr[3] & ~0xfff;
- for(l1 = 0; l1 < 1024; l1++) {
- cpu_physical_memory_read(pgd + l1 * 4, &pde, 4);
- pde = le32_to_cpu(pde);
- if (pde & PG_PRESENT_MASK) {
- if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
- /* 4M pages */
- print_pte(mon, env, (l1 << 22), pde, ~((1 << 21) - 1));
- } else {
- for(l2 = 0; l2 < 1024; l2++) {
- cpu_physical_memory_read((pde & ~0xfff) + l2 * 4, &pte, 4);
- pte = le32_to_cpu(pte);
- if (pte & PG_PRESENT_MASK) {
- print_pte(mon, env, (l1 << 22) + (l2 << 12),
- pte & ~PG_PSE_MASK,
- ~0xfff);
- }
- }
- }
- }
+ /* Trim line to fit screen */
+ if (pos - buf > 79) {
+ strcpy(buf + 77, "..");
}
-}
-static void tlb_info_pae32(Monitor *mon, CPUArchState *env)
-{
- unsigned int l1, l2, l3;
- uint64_t pdpe, pde, pte;
- uint64_t pdp_addr, pd_addr, pt_addr;
-
- pdp_addr = env->cr[3] & ~0x1f;
- for (l1 = 0; l1 < 4; l1++) {
- cpu_physical_memory_read(pdp_addr + l1 * 8, &pdpe, 8);
- pdpe = le64_to_cpu(pdpe);
- if (pdpe & PG_PRESENT_MASK) {
- pd_addr = pdpe & 0x3fffffffff000ULL;
- for (l2 = 0; l2 < 512; l2++) {
- cpu_physical_memory_read(pd_addr + l2 * 8, &pde, 8);
- pde = le64_to_cpu(pde);
- if (pde & PG_PRESENT_MASK) {
- if (pde & PG_PSE_MASK) {
- /* 2M pages with PAE, CR4.PSE is ignored */
- print_pte(mon, env, (l1 << 30) + (l2 << 21), pde,
- ~((hwaddr)(1 << 20) - 1));
- } else {
- pt_addr = pde & 0x3fffffffff000ULL;
- for (l3 = 0; l3 < 512; l3++) {
- cpu_physical_memory_read(pt_addr + l3 * 8, &pte, 8);
- pte = le64_to_cpu(pte);
- if (pte & PG_PRESENT_MASK) {
- print_pte(mon, env, (l1 << 30) + (l2 << 21)
- + (l3 << 12),
- pte & ~PG_PSE_MASK,
- ~(hwaddr)0xfff);
- }
- }
- }
- }
- }
- }
- }
+ monitor_printf(mon, "%s\n", buf);
}
-#ifdef TARGET_X86_64
-static void tlb_info_la48(Monitor *mon, CPUArchState *env,
- uint64_t l0, uint64_t pml4_addr)
+static
+int mem_print_tlb(CPUState *cs, void *data, PTE_t *pte,
+ vaddr vaddr_in, int height, int offset)
{
- uint64_t l1, l2, l3, l4;
- uint64_t pml4e, pdpe, pde, pte;
- uint64_t pdp_addr, pd_addr, pt_addr;
-
- for (l1 = 0; l1 < 512; l1++) {
- cpu_physical_memory_read(pml4_addr + l1 * 8, &pml4e, 8);
- pml4e = le64_to_cpu(pml4e);
- if (!(pml4e & PG_PRESENT_MASK)) {
- continue;
- }
+ struct mem_print_state *state = (struct mem_print_state *) data;
+ CPUClass *cc = CPU_GET_CLASS(cs);
- pdp_addr = pml4e & 0x3fffffffff000ULL;
- for (l2 = 0; l2 < 512; l2++) {
- cpu_physical_memory_read(pdp_addr + l2 * 8, &pdpe, 8);
- pdpe = le64_to_cpu(pdpe);
- if (!(pdpe & PG_PRESENT_MASK)) {
- continue;
- }
-
- if (pdpe & PG_PSE_MASK) {
- /* 1G pages, CR4.PSE is ignored */
- print_pte(mon, env, (l0 << 48) + (l1 << 39) + (l2 << 30),
- pdpe, 0x3ffffc0000000ULL);
- continue;
- }
-
- pd_addr = pdpe & 0x3fffffffff000ULL;
- for (l3 = 0; l3 < 512; l3++) {
- cpu_physical_memory_read(pd_addr + l3 * 8, &pde, 8);
- pde = le64_to_cpu(pde);
- if (!(pde & PG_PRESENT_MASK)) {
- continue;
- }
-
- if (pde & PG_PSE_MASK) {
- /* 2M pages, CR4.PSE is ignored */
- print_pte(mon, env, (l0 << 48) + (l1 << 39) + (l2 << 30) +
- (l3 << 21), pde, 0x3ffffffe00000ULL);
- continue;
- }
-
- pt_addr = pde & 0x3fffffffff000ULL;
- for (l4 = 0; l4 < 512; l4++) {
- cpu_physical_memory_read(pt_addr
- + l4 * 8,
- &pte, 8);
- pte = le64_to_cpu(pte);
- if (pte & PG_PRESENT_MASK) {
- print_pte(mon, env, (l0 << 48) + (l1 << 39) +
- (l2 << 30) + (l3 << 21) + (l4 << 12),
- pte & ~PG_PSE_MASK, 0x3fffffffff000ULL);
- }
- }
- }
- }
- }
+ cc->sysemu_ops->mon_print_pte(state->mon, state->env, vaddr_in,
+ pte->pte64_t);
+ return 0;
}
-static void tlb_info_la57(Monitor *mon, CPUArchState *env)
+void hmp_info_tlb(Monitor *mon, const QDict *qdict)
{
- uint64_t l0;
- uint64_t pml5e;
- uint64_t pml5_addr;
+ struct mem_print_state state;
- pml5_addr = env->cr[3] & 0x3fffffffff000ULL;
- for (l0 = 0; l0 < 512; l0++) {
- cpu_physical_memory_read(pml5_addr + l0 * 8, &pml5e, 8);
- pml5e = le64_to_cpu(pml5e);
- if (pml5e & PG_PRESENT_MASK) {
- tlb_info_la48(mon, env, l0, pml5e & 0x3fffffffff000ULL);
- }
+ CPUState *cs = mon_get_cpu(mon);
+ if (!cs) {
+ monitor_printf(mon, "Unable to get CPUState. Internal error\n");
+ return;
}
-}
-#endif /* TARGET_X86_64 */
-void hmp_info_tlb(Monitor *mon, const QDict *qdict)
-{
- CPUArchState *env;
+ CPUClass *cc = CPU_GET_CLASS(cs);
- env = mon_get_cpu_env(mon);
- if (!env) {
- monitor_printf(mon, "No CPU available\n");
- return;
+ if ((!cc->sysemu_ops->pte_child)
+ || (!cc->sysemu_ops->pte_leaf)
+ || (!cc->sysemu_ops->pte_leaf_page_size)
+ || (!cc->sysemu_ops->page_table_entries_per_node)
+ || (!cc->sysemu_ops->pte_flags)
+ || (!cc->sysemu_ops->mon_print_pte)
+ || (!cc->sysemu_ops->mon_init_page_table_iterator)) {
+ monitor_printf(mon, "Info tlb unsupported on this ISA\n");
}
- if (!(env->cr[0] & CR0_PG_MASK)) {
- monitor_printf(mon, "PG disabled\n");
+ if (!cc->sysemu_ops->mon_init_page_table_iterator(mon, &state)) {
+ monitor_printf(mon, "Unable to initialize page table iterator\n");
return;
}
- if (env->cr[4] & CR4_PAE_MASK) {
-#ifdef TARGET_X86_64
- if (env->hflags & HF_LMA_MASK) {
- if (env->cr[4] & CR4_LA57_MASK) {
- tlb_info_la57(mon, env);
- } else {
- tlb_info_la48(mon, env, 0, env->cr[3] & 0x3fffffffff000ULL);
- }
- } else
-#endif
- {
- tlb_info_pae32(mon, env);
- }
- } else {
- tlb_info_32(mon, env);
- }
+
+ /**
+ * 'info tlb' visits only leaf PTEs marked present.
+ * It does not check other protection bits.
+ */
+ for_each_pte(cs, &mem_print_tlb, &state, false, false);
}
static void mem_print(Monitor *mon, CPUArchState *env,
--
2.34.1Hi Don,
(Cc'ing Daniel for HumanReadableText)
On 6/6/24 16:02, Don Porter wrote:
> Signed-off-by: Don Porter <porter@cs.unc.edu>
> ---
> include/hw/core/sysemu-cpu-ops.h | 7 +
> monitor/hmp-cmds-target.c | 1 +
> target/i386/cpu.h | 2 +
> target/i386/monitor.c | 217 ++++++-------------------------
> 4 files changed, 53 insertions(+), 174 deletions(-)
>
> diff --git a/include/hw/core/sysemu-cpu-ops.h b/include/hw/core/sysemu-cpu-ops.h
> index eb16a1c3e2..bf3de3e004 100644
> --- a/include/hw/core/sysemu-cpu-ops.h
> +++ b/include/hw/core/sysemu-cpu-ops.h
> @@ -243,6 +243,13 @@ typedef struct SysemuCPUOps {
> bool (*mon_flush_page_print_state)(CPUState *cs,
> struct mem_print_state *state);
>
> + /**
> + * @mon_print_pte: Hook called by the monitor to print a page
> + * table entry at address addr, with contents pte.
> + */
> + void (*mon_print_pte) (Monitor *mon, CPUArchState *env, hwaddr addr,
> + hwaddr pte);
IMO the SysemuCPUOps prototype should not use the monitor and return
a HumanReadableText:
HumanReadableText *(*mon_print_pte)(CPUArchState *env,
hwaddr addr, hwaddr pte);
Then define a QMP handler, itself registered to the monitor using
monitor_register_hmp_info_hrt().
Otherwise the cleanup is nice!
Regards,
Phil.
> +
> } SysemuCPUOps;
>
> #endif /* SYSEMU_CPU_OPS_H */
> diff --git a/monitor/hmp-cmds-target.c b/monitor/hmp-cmds-target.c
> index 60a8bd0c37..3393e5ad0b 100644
> --- a/monitor/hmp-cmds-target.c
> +++ b/monitor/hmp-cmds-target.c
> @@ -318,6 +318,7 @@ void hmp_info_pg(Monitor *mon, const QDict *qdict)
> /* Print last entry, if one present */
> cc->sysemu_ops->mon_flush_page_print_state(cs, &state);
> }
> +
> static void memory_dump(Monitor *mon, int count, int format, int wsize,
> hwaddr addr, int is_physical)
> {
> diff --git a/target/i386/cpu.h b/target/i386/cpu.h
> index cbb6f6fc4d..1346ec0033 100644
> --- a/target/i386/cpu.h
> +++ b/target/i386/cpu.h
> @@ -2167,6 +2167,8 @@ bool x86_mon_init_page_table_iterator(Monitor *mon,
> struct mem_print_state *state);
> void x86_mon_info_pg_print_header(Monitor *mon, struct mem_print_state *state);
> bool x86_mon_flush_print_pg_state(CPUState *cs, struct mem_print_state *state);
> +void x86_mon_print_pte(Monitor *mon, CPUArchState *env, hwaddr addr,
> + hwaddr pte);
>
> void x86_cpu_dump_state(CPUState *cs, FILE *f, int flags);
>
> diff --git a/target/i386/monitor.c b/target/i386/monitor.c
> index 65e82e73e8..ecde164857 100644
> --- a/target/i386/monitor.c
> +++ b/target/i386/monitor.c
> @@ -214,202 +214,71 @@ static hwaddr addr_canonical(CPUArchState *env, hwaddr addr)
> return addr;
> }
>
> -static void print_pte(Monitor *mon, CPUArchState *env, hwaddr addr,
> - hwaddr pte, hwaddr mask)
> +void x86_mon_print_pte(Monitor *mon, CPUArchState *env, hwaddr addr,
> + hwaddr pte)
> {
> + char buf[128];
> + char *pos = buf, *end = buf + sizeof(buf);
> +
> addr = addr_canonical(env, addr);
>
> - monitor_printf(mon, HWADDR_FMT_plx ": " HWADDR_FMT_plx
> - " %c%c%c%c%c%c%c%c%c\n",
> - addr,
> - pte & mask,
> - pte & PG_NX_MASK ? 'X' : '-',
> - pte & PG_GLOBAL_MASK ? 'G' : '-',
> - pte & PG_PSE_MASK ? 'P' : '-',
> - pte & PG_DIRTY_MASK ? 'D' : '-',
> - pte & PG_ACCESSED_MASK ? 'A' : '-',
> - pte & PG_PCD_MASK ? 'C' : '-',
> - pte & PG_PWT_MASK ? 'T' : '-',
> - pte & PG_USER_MASK ? 'U' : '-',
> - pte & PG_RW_MASK ? 'W' : '-');
> -}
> + pos += snprintf(pos, end - pos, HWADDR_FMT_plx ": " HWADDR_FMT_plx " ",
> + addr, (hwaddr) (pte & PG_ADDRESS_MASK));
>
> -static void tlb_info_32(Monitor *mon, CPUArchState *env)
> -{
> - unsigned int l1, l2;
> - uint32_t pgd, pde, pte;
> + pos += snprintf(pos, end - pos, " %s", pg_bits(pte));
>
> - pgd = env->cr[3] & ~0xfff;
> - for(l1 = 0; l1 < 1024; l1++) {
> - cpu_physical_memory_read(pgd + l1 * 4, &pde, 4);
> - pde = le32_to_cpu(pde);
> - if (pde & PG_PRESENT_MASK) {
> - if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
> - /* 4M pages */
> - print_pte(mon, env, (l1 << 22), pde, ~((1 << 21) - 1));
> - } else {
> - for(l2 = 0; l2 < 1024; l2++) {
> - cpu_physical_memory_read((pde & ~0xfff) + l2 * 4, &pte, 4);
> - pte = le32_to_cpu(pte);
> - if (pte & PG_PRESENT_MASK) {
> - print_pte(mon, env, (l1 << 22) + (l2 << 12),
> - pte & ~PG_PSE_MASK,
> - ~0xfff);
> - }
> - }
> - }
> - }
> + /* Trim line to fit screen */
> + if (pos - buf > 79) {
> + strcpy(buf + 77, "..");
> }
> -}
>
> -static void tlb_info_pae32(Monitor *mon, CPUArchState *env)
> -{
> - unsigned int l1, l2, l3;
> - uint64_t pdpe, pde, pte;
> - uint64_t pdp_addr, pd_addr, pt_addr;
> -
> - pdp_addr = env->cr[3] & ~0x1f;
> - for (l1 = 0; l1 < 4; l1++) {
> - cpu_physical_memory_read(pdp_addr + l1 * 8, &pdpe, 8);
> - pdpe = le64_to_cpu(pdpe);
> - if (pdpe & PG_PRESENT_MASK) {
> - pd_addr = pdpe & 0x3fffffffff000ULL;
> - for (l2 = 0; l2 < 512; l2++) {
> - cpu_physical_memory_read(pd_addr + l2 * 8, &pde, 8);
> - pde = le64_to_cpu(pde);
> - if (pde & PG_PRESENT_MASK) {
> - if (pde & PG_PSE_MASK) {
> - /* 2M pages with PAE, CR4.PSE is ignored */
> - print_pte(mon, env, (l1 << 30) + (l2 << 21), pde,
> - ~((hwaddr)(1 << 20) - 1));
> - } else {
> - pt_addr = pde & 0x3fffffffff000ULL;
> - for (l3 = 0; l3 < 512; l3++) {
> - cpu_physical_memory_read(pt_addr + l3 * 8, &pte, 8);
> - pte = le64_to_cpu(pte);
> - if (pte & PG_PRESENT_MASK) {
> - print_pte(mon, env, (l1 << 30) + (l2 << 21)
> - + (l3 << 12),
> - pte & ~PG_PSE_MASK,
> - ~(hwaddr)0xfff);
> - }
> - }
> - }
> - }
> - }
> - }
> - }
> + monitor_printf(mon, "%s\n", buf);
> }
>
> -#ifdef TARGET_X86_64
> -static void tlb_info_la48(Monitor *mon, CPUArchState *env,
> - uint64_t l0, uint64_t pml4_addr)
> +static
> +int mem_print_tlb(CPUState *cs, void *data, PTE_t *pte,
> + vaddr vaddr_in, int height, int offset)
> {
> - uint64_t l1, l2, l3, l4;
> - uint64_t pml4e, pdpe, pde, pte;
> - uint64_t pdp_addr, pd_addr, pt_addr;
> -
> - for (l1 = 0; l1 < 512; l1++) {
> - cpu_physical_memory_read(pml4_addr + l1 * 8, &pml4e, 8);
> - pml4e = le64_to_cpu(pml4e);
> - if (!(pml4e & PG_PRESENT_MASK)) {
> - continue;
> - }
> + struct mem_print_state *state = (struct mem_print_state *) data;
> + CPUClass *cc = CPU_GET_CLASS(cs);
>
> - pdp_addr = pml4e & 0x3fffffffff000ULL;
> - for (l2 = 0; l2 < 512; l2++) {
> - cpu_physical_memory_read(pdp_addr + l2 * 8, &pdpe, 8);
> - pdpe = le64_to_cpu(pdpe);
> - if (!(pdpe & PG_PRESENT_MASK)) {
> - continue;
> - }
> -
> - if (pdpe & PG_PSE_MASK) {
> - /* 1G pages, CR4.PSE is ignored */
> - print_pte(mon, env, (l0 << 48) + (l1 << 39) + (l2 << 30),
> - pdpe, 0x3ffffc0000000ULL);
> - continue;
> - }
> -
> - pd_addr = pdpe & 0x3fffffffff000ULL;
> - for (l3 = 0; l3 < 512; l3++) {
> - cpu_physical_memory_read(pd_addr + l3 * 8, &pde, 8);
> - pde = le64_to_cpu(pde);
> - if (!(pde & PG_PRESENT_MASK)) {
> - continue;
> - }
> -
> - if (pde & PG_PSE_MASK) {
> - /* 2M pages, CR4.PSE is ignored */
> - print_pte(mon, env, (l0 << 48) + (l1 << 39) + (l2 << 30) +
> - (l3 << 21), pde, 0x3ffffffe00000ULL);
> - continue;
> - }
> -
> - pt_addr = pde & 0x3fffffffff000ULL;
> - for (l4 = 0; l4 < 512; l4++) {
> - cpu_physical_memory_read(pt_addr
> - + l4 * 8,
> - &pte, 8);
> - pte = le64_to_cpu(pte);
> - if (pte & PG_PRESENT_MASK) {
> - print_pte(mon, env, (l0 << 48) + (l1 << 39) +
> - (l2 << 30) + (l3 << 21) + (l4 << 12),
> - pte & ~PG_PSE_MASK, 0x3fffffffff000ULL);
> - }
> - }
> - }
> - }
> - }
> + cc->sysemu_ops->mon_print_pte(state->mon, state->env, vaddr_in,
> + pte->pte64_t);
> + return 0;
> }
>
> -static void tlb_info_la57(Monitor *mon, CPUArchState *env)
> +void hmp_info_tlb(Monitor *mon, const QDict *qdict)
> {
> - uint64_t l0;
> - uint64_t pml5e;
> - uint64_t pml5_addr;
> + struct mem_print_state state;
>
> - pml5_addr = env->cr[3] & 0x3fffffffff000ULL;
> - for (l0 = 0; l0 < 512; l0++) {
> - cpu_physical_memory_read(pml5_addr + l0 * 8, &pml5e, 8);
> - pml5e = le64_to_cpu(pml5e);
> - if (pml5e & PG_PRESENT_MASK) {
> - tlb_info_la48(mon, env, l0, pml5e & 0x3fffffffff000ULL);
> - }
> + CPUState *cs = mon_get_cpu(mon);
> + if (!cs) {
> + monitor_printf(mon, "Unable to get CPUState. Internal error\n");
> + return;
> }
> -}
> -#endif /* TARGET_X86_64 */
>
> -void hmp_info_tlb(Monitor *mon, const QDict *qdict)
> -{
> - CPUArchState *env;
> + CPUClass *cc = CPU_GET_CLASS(cs);
>
> - env = mon_get_cpu_env(mon);
> - if (!env) {
> - monitor_printf(mon, "No CPU available\n");
> - return;
> + if ((!cc->sysemu_ops->pte_child)
> + || (!cc->sysemu_ops->pte_leaf)
> + || (!cc->sysemu_ops->pte_leaf_page_size)
> + || (!cc->sysemu_ops->page_table_entries_per_node)
> + || (!cc->sysemu_ops->pte_flags)
> + || (!cc->sysemu_ops->mon_print_pte)
> + || (!cc->sysemu_ops->mon_init_page_table_iterator)) {
> + monitor_printf(mon, "Info tlb unsupported on this ISA\n");
> }
>
> - if (!(env->cr[0] & CR0_PG_MASK)) {
> - monitor_printf(mon, "PG disabled\n");
> + if (!cc->sysemu_ops->mon_init_page_table_iterator(mon, &state)) {
> + monitor_printf(mon, "Unable to initialize page table iterator\n");
> return;
> }
> - if (env->cr[4] & CR4_PAE_MASK) {
> -#ifdef TARGET_X86_64
> - if (env->hflags & HF_LMA_MASK) {
> - if (env->cr[4] & CR4_LA57_MASK) {
> - tlb_info_la57(mon, env);
> - } else {
> - tlb_info_la48(mon, env, 0, env->cr[3] & 0x3fffffffff000ULL);
> - }
> - } else
> -#endif
> - {
> - tlb_info_pae32(mon, env);
> - }
> - } else {
> - tlb_info_32(mon, env);
> - }
> +
> + /**
> + * 'info tlb' visits only leaf PTEs marked present.
> + * It does not check other protection bits.
> + */
> + for_each_pte(cs, &mem_print_tlb, &state, false, false);
> }
>
> static void mem_print(Monitor *mon, CPUArchState *env,
On Fri, Jun 07, 2024 at 08:02:51AM +0200, Philippe Mathieu-Daudé wrote:
> Hi Don,
>
> (Cc'ing Daniel for HumanReadableText)
>
> On 6/6/24 16:02, Don Porter wrote:
> > Signed-off-by: Don Porter <porter@cs.unc.edu>
> > ---
> > include/hw/core/sysemu-cpu-ops.h | 7 +
> > monitor/hmp-cmds-target.c | 1 +
> > target/i386/cpu.h | 2 +
> > target/i386/monitor.c | 217 ++++++-------------------------
> > 4 files changed, 53 insertions(+), 174 deletions(-)
> >
> > diff --git a/include/hw/core/sysemu-cpu-ops.h b/include/hw/core/sysemu-cpu-ops.h
> > index eb16a1c3e2..bf3de3e004 100644
> > --- a/include/hw/core/sysemu-cpu-ops.h
> > +++ b/include/hw/core/sysemu-cpu-ops.h
> > @@ -243,6 +243,13 @@ typedef struct SysemuCPUOps {
> > bool (*mon_flush_page_print_state)(CPUState *cs,
> > struct mem_print_state *state);
> > + /**
> > + * @mon_print_pte: Hook called by the monitor to print a page
> > + * table entry at address addr, with contents pte.
> > + */
> > + void (*mon_print_pte) (Monitor *mon, CPUArchState *env, hwaddr addr,
> > + hwaddr pte);
>
> IMO the SysemuCPUOps prototype should not use the monitor and return
> a HumanReadableText:
>
> HumanReadableText *(*mon_print_pte)(CPUArchState *env,
> hwaddr addr, hwaddr pte);
>
> Then define a QMP handler, itself registered to the monitor using
> monitor_register_hmp_info_hrt().
IIUC, this method is called repeatedly from an iterator, so I
think you would need to be instead relpacing the 'Monitor *mon'
parmeter with "GString *str", and print into that buffer.
The HumanReadableText would be created from teh GString higher
up in the call path.
With regards,
Daniel
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