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-rw-r--r--src/target/armv4_5.c148
1 files changed, 113 insertions, 35 deletions
diff --git a/src/target/armv4_5.c b/src/target/armv4_5.c
index a4c704ec..6c6f2bfe 100644
--- a/src/target/armv4_5.c
+++ b/src/target/armv4_5.c
@@ -39,26 +39,59 @@
static const char *armv4_5_core_reg_list[] =
{
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13_usr", "lr_usr", "pc",
+ "r8", "r9", "r10", "r11", "r12", "sp_usr", "lr_usr", "pc",
- "r8_fiq", "r9_fiq", "r10_fiq", "r11_fiq", "r12_fiq", "r13_fiq", "lr_fiq",
+ "r8_fiq", "r9_fiq", "r10_fiq", "r11_fiq", "r12_fiq", "sp_fiq", "lr_fiq",
- "r13_irq", "lr_irq",
+ "sp_irq", "lr_irq",
- "r13_svc", "lr_svc",
+ "sp_svc", "lr_svc",
- "r13_abt", "lr_abt",
+ "sp_abt", "lr_abt",
- "r13_und", "lr_und",
+ "sp_und", "lr_und",
"cpsr", "spsr_fiq", "spsr_irq", "spsr_svc", "spsr_abt", "spsr_und",
- "r13_mon", "lr_mon", "spsr_mon",
+ "sp_mon", "lr_mon", "spsr_mon",
+};
+
+static const uint8_t arm_usr_indices[17] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, ARMV4_5_CPSR,
+};
+
+static const uint8_t arm_fiq_indices[8] = {
+ 16, 17, 18, 19, 20, 21, 22, ARMV4_5_SPSR_FIQ,
+};
+
+static const uint8_t arm_irq_indices[3] = {
+ 23, 24, ARMV4_5_SPSR_IRQ,
+};
+
+static const uint8_t arm_svc_indices[3] = {
+ 25, 26, ARMV4_5_SPSR_SVC,
+};
+
+static const uint8_t arm_abt_indices[3] = {
+ 27, 28, ARMV4_5_SPSR_ABT,
+};
+
+static const uint8_t arm_und_indices[3] = {
+ 29, 30, ARMV4_5_SPSR_UND,
+};
+
+static const uint8_t arm_mon_indices[3] = {
+ 37, 38, ARM_SPSR_MON,
};
static const struct {
const char *name;
- unsigned psr;
+ unsigned short psr;
+ /* For user and system modes, these list indices for all registers.
+ * otherwise they're just indices for the shadow registers and SPSR.
+ */
+ unsigned short n_indices;
+ const uint8_t *indices;
} arm_mode_data[] = {
/* Seven modes are standard from ARM7 on. "System" and "User" share
* the same registers; other modes shadow from 3 to 8 registers.
@@ -66,30 +99,44 @@ static const struct {
{
.name = "User",
.psr = ARMV4_5_MODE_USR,
+ .n_indices = ARRAY_SIZE(arm_usr_indices),
+ .indices = arm_usr_indices,
},
{
.name = "FIQ",
.psr = ARMV4_5_MODE_FIQ,
+ .n_indices = ARRAY_SIZE(arm_fiq_indices),
+ .indices = arm_fiq_indices,
},
{
.name = "Supervisor",
.psr = ARMV4_5_MODE_SVC,
+ .n_indices = ARRAY_SIZE(arm_svc_indices),
+ .indices = arm_svc_indices,
},
{
.name = "Abort",
.psr = ARMV4_5_MODE_ABT,
+ .n_indices = ARRAY_SIZE(arm_abt_indices),
+ .indices = arm_abt_indices,
},
{
.name = "IRQ",
.psr = ARMV4_5_MODE_IRQ,
+ .n_indices = ARRAY_SIZE(arm_irq_indices),
+ .indices = arm_irq_indices,
},
{
- .name = "Undefined" /* instruction */,
+ .name = "Undefined instruction",
.psr = ARMV4_5_MODE_UND,
+ .n_indices = ARRAY_SIZE(arm_und_indices),
+ .indices = arm_und_indices,
},
{
.name = "System",
.psr = ARMV4_5_MODE_SYS,
+ .n_indices = ARRAY_SIZE(arm_usr_indices),
+ .indices = arm_usr_indices,
},
/* TrustZone "Security Extensions" add a secure monitor mode.
* This is distinct from a "debug monitor" which can support
@@ -98,6 +145,8 @@ static const struct {
{
.name = "Secure Monitor",
.psr = ARM_MODE_MON,
+ .n_indices = ARRAY_SIZE(arm_mon_indices),
+ .indices = arm_mon_indices,
},
};
@@ -461,11 +510,10 @@ int armv4_5_arch_state(struct target *target)
COMMAND_HANDLER(handle_armv4_5_reg_command)
{
- char output[128];
- int output_len;
- int mode, num;
struct target *target = get_current_target(CMD_CTX);
struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
+ unsigned num_regs;
+ struct reg *regs;
if (!is_arm(armv4_5))
{
@@ -476,7 +524,7 @@ COMMAND_HANDLER(handle_armv4_5_reg_command)
if (target->state != TARGET_HALTED)
{
command_print(CMD_CTX, "error: target must be halted for register accesses");
- return ERROR_OK;
+ return ERROR_FAIL;
}
if (!is_arm_mode(armv4_5->core_mode))
@@ -488,31 +536,61 @@ COMMAND_HANDLER(handle_armv4_5_reg_command)
return ERROR_FAIL;
}
- for (num = 0; num <= 15; num++)
- {
- output_len = 0;
- for (mode = 0; mode < 6; mode++)
- {
- if (!ARMV4_5_CORE_REG_MODENUM(armv4_5->core_cache, mode, num).valid)
- {
- armv4_5->full_context(target);
- }
- output_len += snprintf(output + output_len,
- 128 - output_len,
+ num_regs = armv4_5->core_cache->num_regs;
+ regs = armv4_5->core_cache->reg_list;
+
+ for (unsigned mode = 0; mode < ARRAY_SIZE(arm_mode_data); mode++) {
+ const char *name;
+ char *sep = "\n";
+ char *shadow = "";
+
+ /* label this bank of registers (or shadows) */
+ switch (arm_mode_data[mode].psr) {
+ case ARMV4_5_MODE_SYS:
+ continue;
+ case ARMV4_5_MODE_USR:
+ name = "System and User";
+ sep = "";
+ break;
+ case ARM_MODE_MON:
+ if (armv4_5->core_type != ARM_MODE_MON)
+ continue;
+ /* FALLTHROUGH */
+ default:
+ name = arm_mode_data[mode].name;
+ shadow = "shadow ";
+ break;
+ }
+ command_print(CMD_CTX, "%s%s mode %sregisters",
+ sep, name, shadow);
+
+ /* display N rows of up to 4 registers each */
+ for (unsigned i = 0; i < arm_mode_data[mode].n_indices;) {
+ char output[80];
+ int output_len = 0;
+
+ for (unsigned j = 0; j < 4; j++, i++) {
+ uint32_t value;
+ struct reg *reg = regs;
+
+ if (i >= arm_mode_data[mode].n_indices)
+ break;
+
+ reg += arm_mode_data[mode].indices[i];
+
+ /* REVISIT be smarter about faults... */
+ if (!reg->valid)
+ armv4_5->full_context(target);
+
+ value = buf_get_u32(reg->value, 0, 32);
+ output_len += snprintf(output + output_len,
+ sizeof(output) - output_len,
"%8s: %8.8" PRIx32 " ",
- ARMV4_5_CORE_REG_MODENUM(armv4_5->core_cache, mode, num).name,
- buf_get_u32(ARMV4_5_CORE_REG_MODENUM(armv4_5->core_cache, mode, num).value, 0, 32));
+ reg->name, value);
+ }
+ command_print(CMD_CTX, "%s", output);
}
- command_print(CMD_CTX, "%s", output);
}
- command_print(CMD_CTX,
- " cpsr: %8.8" PRIx32 " spsr_fiq: %8.8" PRIx32 " spsr_irq: %8.8" PRIx32 " spsr_svc: %8.8" PRIx32 " spsr_abt: %8.8" PRIx32 " spsr_und: %8.8" PRIx32 "",
- buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32),
- buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_FIQ].value, 0, 32),
- buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_IRQ].value, 0, 32),
- buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_SVC].value, 0, 32),
- buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_ABT].value, 0, 32),
- buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_UND].value, 0, 32));
return ERROR_OK;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-02 06:36:43 +0000