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-rw-r--r--hmp-commands-info.hx2
-rw-r--r--target/m68k/cpu.h4
-rw-r--r--target/m68k/helper.c218
-rw-r--r--target/m68k/monitor.c13
4 files changed, 236 insertions, 1 deletions
diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index 54c3e5eac6..ad590a4ffb 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -216,7 +216,7 @@ Show PCI information.
ETEXI
#if defined(TARGET_I386) || defined(TARGET_SH4) || defined(TARGET_SPARC) || \
- defined(TARGET_PPC) || defined(TARGET_XTENSA)
+ defined(TARGET_PPC) || defined(TARGET_XTENSA) || defined(TARGET_M68K)
{
.name = "tlb",
.args_type = "",
diff --git a/target/m68k/cpu.h b/target/m68k/cpu.h
index 0739c3f5c8..627fb787b6 100644
--- a/target/m68k/cpu.h
+++ b/target/m68k/cpu.h
@@ -316,6 +316,7 @@ typedef enum {
#define M68K_DESC_GLOBAL 0x00000400
#define M68K_DESC_URESERVED 0x00000800
+#define M68K_ROOT_POINTER_ENTRIES 128
#define M68K_4K_PAGE_MASK (~0xff)
#define M68K_POINTER_BASE(entry) (entry & ~0x1ff)
#define M68K_ROOT_INDEX(addr) ((address >> 23) & 0x1fc)
@@ -329,6 +330,8 @@ typedef enum {
#define M68K_PDT_VALID(entry) (entry & 3)
#define M68K_PDT_INDIRECT(entry) ((entry & 3) == 2)
#define M68K_INDIRECT_POINTER(addr) (addr & ~3)
+#define M68K_TTS_POINTER_SHIFT 18
+#define M68K_TTS_ROOT_SHIFT 25
/* bits for 68040 MMU Transparent Translation Registers */
#define M68K_TTR_ADDR_BASE 0xff000000
@@ -571,4 +574,5 @@ static inline void cpu_get_tb_cpu_state(CPUM68KState *env, target_ulong *pc,
}
}
+void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUM68KState *env);
#endif
diff --git a/target/m68k/helper.c b/target/m68k/helper.c
index 9fd9d3f1ff..20155c7801 100644
--- a/target/m68k/helper.c
+++ b/target/m68k/helper.c
@@ -374,6 +374,224 @@ int m68k_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
/* MMU: 68040 only */
+static void print_address_zone(FILE *f, fprintf_function cpu_fprintf,
+ uint32_t logical, uint32_t physical,
+ uint32_t size, int attr)
+{
+ cpu_fprintf(f, "%08x - %08x -> %08x - %08x %c ",
+ logical, logical + size - 1,
+ physical, physical + size - 1,
+ attr & 4 ? 'W' : '-');
+ size >>= 10;
+ if (size < 1024) {
+ cpu_fprintf(f, "(%d KiB)\n", size);
+ } else {
+ size >>= 10;
+ if (size < 1024) {
+ cpu_fprintf(f, "(%d MiB)\n", size);
+ } else {
+ size >>= 10;
+ cpu_fprintf(f, "(%d GiB)\n", size);
+ }
+ }
+}
+
+static void dump_address_map(FILE *f, fprintf_function cpu_fprintf,
+ CPUM68KState *env, uint32_t root_pointer)
+{
+ int i, j, k;
+ int tic_size, tic_shift;
+ uint32_t tib_mask;
+ uint32_t tia, tib, tic;
+ uint32_t logical = 0xffffffff, physical = 0xffffffff;
+ uint32_t first_logical = 0xffffffff, first_physical = 0xffffffff;
+ uint32_t last_logical, last_physical;
+ int32_t size;
+ int last_attr = -1, attr = -1;
+ M68kCPU *cpu = m68k_env_get_cpu(env);
+ CPUState *cs = CPU(cpu);
+
+ if (env->mmu.tcr & M68K_TCR_PAGE_8K) {
+ /* 8k page */
+ tic_size = 32;
+ tic_shift = 13;
+ tib_mask = M68K_8K_PAGE_MASK;
+ } else {
+ /* 4k page */
+ tic_size = 64;
+ tic_shift = 12;
+ tib_mask = M68K_4K_PAGE_MASK;
+ }
+ for (i = 0; i < M68K_ROOT_POINTER_ENTRIES; i++) {
+ tia = ldl_phys(cs->as, M68K_POINTER_BASE(root_pointer) + i * 4);
+ if (!M68K_UDT_VALID(tia)) {
+ continue;
+ }
+ for (j = 0; j < M68K_ROOT_POINTER_ENTRIES; j++) {
+ tib = ldl_phys(cs->as, M68K_POINTER_BASE(tia) + j * 4);
+ if (!M68K_UDT_VALID(tib)) {
+ continue;
+ }
+ for (k = 0; k < tic_size; k++) {
+ tic = ldl_phys(cs->as, (tib & tib_mask) + k * 4);
+ if (!M68K_PDT_VALID(tic)) {
+ continue;
+ }
+ if (M68K_PDT_INDIRECT(tic)) {
+ tic = ldl_phys(cs->as, M68K_INDIRECT_POINTER(tic));
+ }
+
+ last_logical = logical;
+ logical = (i << M68K_TTS_ROOT_SHIFT) |
+ (j << M68K_TTS_POINTER_SHIFT) |
+ (k << tic_shift);
+
+ last_physical = physical;
+ physical = tic & ~((1 << tic_shift) - 1);
+
+ last_attr = attr;
+ attr = tic & ((1 << tic_shift) - 1);
+
+ if ((logical != (last_logical + (1 << tic_shift))) ||
+ (physical != (last_physical + (1 << tic_shift))) ||
+ (attr & 4) != (last_attr & 4)) {
+
+ if (first_logical != 0xffffffff) {
+ size = last_logical + (1 << tic_shift) -
+ first_logical;
+ print_address_zone(f, cpu_fprintf, first_logical,
+ first_physical, size, last_attr);
+ }
+ first_logical = logical;
+ first_physical = physical;
+ }
+ }
+ }
+ }
+ if (first_logical != logical || (attr & 4) != (last_attr & 4)) {
+ size = logical + (1 << tic_shift) - first_logical;
+ print_address_zone(f, cpu_fprintf, first_logical, first_physical, size,
+ last_attr);
+ }
+}
+
+#define DUMP_CACHEFLAGS(a) \
+ switch (a & M68K_DESC_CACHEMODE) { \
+ case M68K_DESC_CM_WRTHRU: /* cachable, write-through */ \
+ cpu_fprintf(f, "T"); \
+ break; \
+ case M68K_DESC_CM_COPYBK: /* cachable, copyback */ \
+ cpu_fprintf(f, "C"); \
+ break; \
+ case M68K_DESC_CM_SERIAL: /* noncachable, serialized */ \
+ cpu_fprintf(f, "S"); \
+ break; \
+ case M68K_DESC_CM_NCACHE: /* noncachable */ \
+ cpu_fprintf(f, "N"); \
+ break; \
+ }
+
+static void dump_ttr(FILE *f, fprintf_function cpu_fprintf, uint32_t ttr)
+{
+ if ((ttr & M68K_TTR_ENABLED) == 0) {
+ cpu_fprintf(f, "disabled\n");
+ return;
+ }
+ cpu_fprintf(f, "Base: 0x%08x Mask: 0x%08x Control: ",
+ ttr & M68K_TTR_ADDR_BASE,
+ (ttr & M68K_TTR_ADDR_MASK) << M68K_TTR_ADDR_MASK_SHIFT);
+ switch (ttr & M68K_TTR_SFIELD) {
+ case M68K_TTR_SFIELD_USER:
+ cpu_fprintf(f, "U");
+ break;
+ case M68K_TTR_SFIELD_SUPER:
+ cpu_fprintf(f, "S");
+ break;
+ default:
+ cpu_fprintf(f, "*");
+ break;
+ }
+ DUMP_CACHEFLAGS(ttr);
+ if (ttr & M68K_DESC_WRITEPROT) {
+ cpu_fprintf(f, "R");
+ } else {
+ cpu_fprintf(f, "W");
+ }
+ cpu_fprintf(f, " U: %d\n", (ttr & M68K_DESC_USERATTR) >>
+ M68K_DESC_USERATTR_SHIFT);
+}
+
+void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUM68KState *env)
+{
+ if ((env->mmu.tcr & M68K_TCR_ENABLED) == 0) {
+ cpu_fprintf(f, "Translation disabled\n");
+ return;
+ }
+ cpu_fprintf(f, "Page Size: ");
+ if (env->mmu.tcr & M68K_TCR_PAGE_8K) {
+ cpu_fprintf(f, "8kB\n");
+ } else {
+ cpu_fprintf(f, "4kB\n");
+ }
+
+ cpu_fprintf(f, "MMUSR: ");
+ if (env->mmu.mmusr & M68K_MMU_B_040) {
+ cpu_fprintf(f, "BUS ERROR\n");
+ } else {
+ cpu_fprintf(f, "Phy=%08x Flags: ", env->mmu.mmusr & 0xfffff000);
+ /* flags found on the page descriptor */
+ if (env->mmu.mmusr & M68K_MMU_G_040) {
+ cpu_fprintf(f, "G"); /* Global */
+ } else {
+ cpu_fprintf(f, ".");
+ }
+ if (env->mmu.mmusr & M68K_MMU_S_040) {
+ cpu_fprintf(f, "S"); /* Supervisor */
+ } else {
+ cpu_fprintf(f, ".");
+ }
+ if (env->mmu.mmusr & M68K_MMU_M_040) {
+ cpu_fprintf(f, "M"); /* Modified */
+ } else {
+ cpu_fprintf(f, ".");
+ }
+ if (env->mmu.mmusr & M68K_MMU_WP_040) {
+ cpu_fprintf(f, "W"); /* Write protect */
+ } else {
+ cpu_fprintf(f, ".");
+ }
+ if (env->mmu.mmusr & M68K_MMU_T_040) {
+ cpu_fprintf(f, "T"); /* Transparent */
+ } else {
+ cpu_fprintf(f, ".");
+ }
+ if (env->mmu.mmusr & M68K_MMU_R_040) {
+ cpu_fprintf(f, "R"); /* Resident */
+ } else {
+ cpu_fprintf(f, ".");
+ }
+ cpu_fprintf(f, " Cache: ");
+ DUMP_CACHEFLAGS(env->mmu.mmusr);
+ cpu_fprintf(f, " U: %d\n", (env->mmu.mmusr >> 8) & 3);
+ cpu_fprintf(f, "\n");
+ }
+
+ cpu_fprintf(f, "ITTR0: ");
+ dump_ttr(f, cpu_fprintf, env->mmu.ttr[M68K_ITTR0]);
+ cpu_fprintf(f, "ITTR1: ");
+ dump_ttr(f, cpu_fprintf, env->mmu.ttr[M68K_ITTR1]);
+ cpu_fprintf(f, "DTTR0: ");
+ dump_ttr(f, cpu_fprintf, env->mmu.ttr[M68K_DTTR0]);
+ cpu_fprintf(f, "DTTR1: ");
+ dump_ttr(f, cpu_fprintf, env->mmu.ttr[M68K_DTTR1]);
+
+ cpu_fprintf(f, "SRP: 0x%08x\n", env->mmu.srp);
+ dump_address_map(f, cpu_fprintf, env, env->mmu.srp);
+
+ cpu_fprintf(f, "URP: 0x%08x\n", env->mmu.urp);
+ dump_address_map(f, cpu_fprintf, env, env->mmu.urp);
+}
+
static int check_TTR(uint32_t ttr, int *prot, target_ulong addr,
int access_type)
{
diff --git a/target/m68k/monitor.c b/target/m68k/monitor.c
index 486213cd8b..db582a34ac 100644
--- a/target/m68k/monitor.c
+++ b/target/m68k/monitor.c
@@ -8,6 +8,19 @@
#include "qemu/osdep.h"
#include "cpu.h"
#include "monitor/hmp-target.h"
+#include "monitor/monitor.h"
+
+void hmp_info_tlb(Monitor *mon, const QDict *qdict)
+{
+ CPUArchState *env1 = mon_get_cpu_env();
+
+ if (!env1) {
+ monitor_printf(mon, "No CPU available\n");
+ return;
+ }
+
+ dump_mmu((FILE *)mon, (fprintf_function)monitor_printf, env1);
+}
static const MonitorDef monitor_defs[] = {
{ "d0", offsetof(CPUM68KState, dregs[0]) },
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-28 11:18:26 +0000