From: Akihiko Odaki <akihiko.odaki@xxxxxxxxxx>
In preparation for a change to use GDBFeature as a parameter of
gdb_register_coprocessor(), convert the internal representation of
dynamic feature from plain XML to GDBFeature.
Signed-off-by: Akihiko Odaki <akihiko.odaki@xxxxxxxxxx>
Acked-by: Richard Henderson <richard.henderson@xxxxxxxxxx>
Message-Id: <20240103173349.398526-27-alex.bennee@xxxxxxxxxx>
Message-Id: <20231213-gdb-v17-1-777047380591@xxxxxxxxxx>
Signed-off-by: Alex Bennée <alex.bennee@xxxxxxxxxx>
---
target/arm/cpu.h | 21 +++---
target/arm/internals.h | 2 +-
target/arm/gdbstub.c | 142 ++++++++++++++++++++---------------------
target/arm/gdbstub64.c | 95 +++++++++++++--------------
4 files changed, 123 insertions(+), 137 deletions(-)
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index ec276fcd57c..65b961fb948 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -25,6 +25,7 @@
#include "hw/registerfields.h"
#include "cpu-qom.h"
#include "exec/cpu-defs.h"
+#include "exec/gdbstub.h"
#include "qapi/qapi-types-common.h"
/* ARM processors have a weak memory model */
@@ -136,23 +137,21 @@ enum {
*/
/**
- * DynamicGDBXMLInfo:
- * @desc: Contains the XML descriptions.
- * @num: Number of the registers in this XML seen by GDB.
+ * DynamicGDBFeatureInfo:
+ * @desc: Contains the feature descriptions.
* @data: A union with data specific to the set of registers
* @cpregs_keys: Array that contains the corresponding Key of
* a given cpreg with the same order of the cpreg
* in the XML description.
*/
-typedef struct DynamicGDBXMLInfo {
- char *desc;
- int num;
+typedef struct DynamicGDBFeatureInfo {
+ GDBFeature desc;
union {
struct {
uint32_t *keys;
} cpregs;
} data;
-} DynamicGDBXMLInfo;
+} DynamicGDBFeatureInfo;
/* CPU state for each instance of a generic timer (in cp15 c14) */
typedef struct ARMGenericTimer {
@@ -881,10 +880,10 @@ struct ArchCPU {
uint64_t *cpreg_vmstate_values;
int32_t cpreg_vmstate_array_len;
- DynamicGDBXMLInfo dyn_sysreg_xml;
- DynamicGDBXMLInfo dyn_svereg_xml;
- DynamicGDBXMLInfo dyn_m_systemreg_xml;
- DynamicGDBXMLInfo dyn_m_secextreg_xml;
+ DynamicGDBFeatureInfo dyn_sysreg_feature;
+ DynamicGDBFeatureInfo dyn_svereg_feature;
+ DynamicGDBFeatureInfo dyn_m_systemreg_feature;
+ DynamicGDBFeatureInfo dyn_m_secextreg_feature;
/* Timers used by the generic (architected) timer */
QEMUTimer *gt_timer[NUM_GTIMERS];
diff --git a/target/arm/internals.h b/target/arm/internals.h
index 71d6c70bf38..0deb60db1a5 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -1446,7 +1446,7 @@ static inline uint64_t pmu_counter_mask(CPUARMState *env)
}
#ifdef TARGET_AARCH64
-int arm_gen_dynamic_svereg_xml(CPUState *cpu, int base_reg);
+GDBFeature *arm_gen_dynamic_svereg_feature(CPUState *cpu, int base_reg);
int aarch64_gdb_get_sve_reg(CPUARMState *env, GByteArray *buf, int reg);
int aarch64_gdb_set_sve_reg(CPUARMState *env, uint8_t *buf, int reg);
int aarch64_gdb_get_fpu_reg(CPUARMState *env, GByteArray *buf, int reg);
diff --git a/target/arm/gdbstub.c b/target/arm/gdbstub.c
index 28f546a5ff9..5949adfb31a 100644
--- a/target/arm/gdbstub.c
+++ b/target/arm/gdbstub.c
@@ -26,11 +26,11 @@
#include "cpu-features.h"
#include "cpregs.h"
-typedef struct RegisterSysregXmlParam {
+typedef struct RegisterSysregFeatureParam {
CPUState *cs;
- GString *s;
+ GDBFeatureBuilder builder;
int n;
-} RegisterSysregXmlParam;
+} RegisterSysregFeatureParam;
/* Old gdb always expect FPA registers. Newer (xml-aware) gdb only expect
whatever the target description contains. Due to a historical mishap
@@ -216,7 +216,7 @@ static int arm_gdb_get_sysreg(CPUARMState *env, GByteArray *buf, int reg)
const ARMCPRegInfo *ri;
uint32_t key;
- key = cpu->dyn_sysreg_xml.data.cpregs.keys[reg];
+ key = cpu->dyn_sysreg_feature.data.cpregs.keys[reg];
ri = get_arm_cp_reginfo(cpu->cp_regs, key);
if (ri) {
if (cpreg_field_is_64bit(ri)) {
@@ -233,34 +233,32 @@ static int arm_gdb_set_sysreg(CPUARMState *env, uint8_t *buf, int reg)
return 0;
}
-static void arm_gen_one_xml_sysreg_tag(GString *s, DynamicGDBXMLInfo *dyn_xml,
+static void arm_gen_one_feature_sysreg(GDBFeatureBuilder *builder,
+ DynamicGDBFeatureInfo *dyn_feature,
ARMCPRegInfo *ri, uint32_t ri_key,
- int bitsize, int regnum)
+ int bitsize, int n)
{
- g_string_append_printf(s, "<reg name=\"%s\"", ri->name);
- g_string_append_printf(s, " bitsize=\"%d\"", bitsize);
- g_string_append_printf(s, " regnum=\"%d\"", regnum);
- g_string_append_printf(s, " group=\"cp_regs\"/>");
- dyn_xml->data.cpregs.keys[dyn_xml->num] = ri_key;
- dyn_xml->num++;
+ gdb_feature_builder_append_reg(builder, ri->name, bitsize, n,
+ "int", "cp_regs");
+
+ dyn_feature->data.cpregs.keys[n] = ri_key;
}
-static void arm_register_sysreg_for_xml(gpointer key, gpointer value,
- gpointer p)
+static void arm_register_sysreg_for_feature(gpointer key, gpointer value,
+ gpointer p)
{
uint32_t ri_key = (uintptr_t)key;
ARMCPRegInfo *ri = value;
- RegisterSysregXmlParam *param = (RegisterSysregXmlParam *)p;
- GString *s = param->s;
+ RegisterSysregFeatureParam *param = p;
ARMCPU *cpu = ARM_CPU(param->cs);
CPUARMState *env = &cpu->env;
- DynamicGDBXMLInfo *dyn_xml = &cpu->dyn_sysreg_xml;
+ DynamicGDBFeatureInfo *dyn_feature = &cpu->dyn_sysreg_feature;
if (!(ri->type & (ARM_CP_NO_RAW | ARM_CP_NO_GDB))) {
if (arm_feature(env, ARM_FEATURE_AARCH64)) {
if (ri->state == ARM_CP_STATE_AA64) {
- arm_gen_one_xml_sysreg_tag(s , dyn_xml, ri, ri_key, 64,
- param->n++);
+ arm_gen_one_feature_sysreg(¶m->builder, dyn_feature,
+ ri, ri_key, 64, param->n++);
}
} else {
if (ri->state == ARM_CP_STATE_AA32) {
@@ -269,32 +267,32 @@ static void arm_register_sysreg_for_xml(gpointer key, gpointer value,
return;
}
if (ri->type & ARM_CP_64BIT) {
- arm_gen_one_xml_sysreg_tag(s , dyn_xml, ri, ri_key, 64,
- param->n++);
+ arm_gen_one_feature_sysreg(¶m->builder, dyn_feature,
+ ri, ri_key, 64, param->n++);
} else {
- arm_gen_one_xml_sysreg_tag(s , dyn_xml, ri, ri_key, 32,
- param->n++);
+ arm_gen_one_feature_sysreg(¶m->builder, dyn_feature,
+ ri, ri_key, 32, param->n++);
}
}
}
}
}
-static int arm_gen_dynamic_sysreg_xml(CPUState *cs, int base_reg)
+static GDBFeature *arm_gen_dynamic_sysreg_feature(CPUState *cs, int base_reg)
{
ARMCPU *cpu = ARM_CPU(cs);
- GString *s = g_string_new(NULL);
- RegisterSysregXmlParam param = {cs, s, base_reg};
-
- cpu->dyn_sysreg_xml.num = 0;
- cpu->dyn_sysreg_xml.data.cpregs.keys = g_new(uint32_t, g_hash_table_size(cpu->cp_regs));
- g_string_printf(s, "<?xml version=\"1.0\"?>");
- g_string_append_printf(s, "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">");
- g_string_append_printf(s, "<feature name=\"org.qemu.gdb.arm.sys.regs\">");
- g_hash_table_foreach(cpu->cp_regs, arm_register_sysreg_for_xml, ¶m);
- g_string_append_printf(s, "</feature>");
- cpu->dyn_sysreg_xml.desc = g_string_free(s, false);
- return cpu->dyn_sysreg_xml.num;
+ RegisterSysregFeatureParam param = {cs};
+ gsize num_regs = g_hash_table_size(cpu->cp_regs);
+
+ gdb_feature_builder_init(¶m.builder,
+ &cpu->dyn_sysreg_feature.desc,
+ "org.qemu.gdb.arm.sys.regs",
+ "system-registers.xml",
+ base_reg);
+ cpu->dyn_sysreg_feature.data.cpregs.keys = g_new(uint32_t, num_regs);
+ g_hash_table_foreach(cpu->cp_regs, arm_register_sysreg_for_feature, ¶m);
+ gdb_feature_builder_end(¶m.builder);
+ return &cpu->dyn_sysreg_feature.desc;
}
#ifdef CONFIG_TCG
@@ -386,31 +384,29 @@ static int arm_gdb_set_m_systemreg(CPUARMState *env, uint8_t *buf, int reg)
return 0; /* TODO */
}
-static int arm_gen_dynamic_m_systemreg_xml(CPUState *cs, int orig_base_reg)
+static GDBFeature *arm_gen_dynamic_m_systemreg_feature(CPUState *cs,
+ int base_reg)
{
ARMCPU *cpu = ARM_CPU(cs);
CPUARMState *env = &cpu->env;
- GString *s = g_string_new(NULL);
- int base_reg = orig_base_reg;
+ GDBFeatureBuilder builder;
+ int reg = 0;
int i;
- g_string_printf(s, "<?xml version=\"1.0\"?>");
- g_string_append_printf(s, "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">");
- g_string_append_printf(s, "<feature name=\"org.gnu.gdb.arm.m-system\">\n");
+ gdb_feature_builder_init(&builder, &cpu->dyn_m_systemreg_feature.desc,
+ "org.gnu.gdb.arm.m-system", "arm-m-system.xml",
+ base_reg);
for (i = 0; i < ARRAY_SIZE(m_sysreg_def); i++) {
if (arm_feature(env, m_sysreg_def[i].feature)) {
- g_string_append_printf(s,
- "<reg name=\"%s\" bitsize=\"32\" regnum=\"%d\"/>\n",
- m_sysreg_def[i].name, base_reg++);
+ gdb_feature_builder_append_reg(&builder, m_sysreg_def[i].name, 32,
+ reg++, "int", NULL);
}
}
- g_string_append_printf(s, "</feature>");
- cpu->dyn_m_systemreg_xml.desc = g_string_free(s, false);
- cpu->dyn_m_systemreg_xml.num = base_reg - orig_base_reg;
+ gdb_feature_builder_end(&builder);
- return cpu->dyn_m_systemreg_xml.num;
+ return &cpu->dyn_m_systemreg_feature.desc;
}
#ifndef CONFIG_USER_ONLY
@@ -428,31 +424,31 @@ static int arm_gdb_set_m_secextreg(CPUARMState *env, uint8_t *buf, int reg)
return 0; /* TODO */
}
-static int arm_gen_dynamic_m_secextreg_xml(CPUState *cs, int orig_base_reg)
+static GDBFeature *arm_gen_dynamic_m_secextreg_feature(CPUState *cs,
+ int base_reg)
{
ARMCPU *cpu = ARM_CPU(cs);
- GString *s = g_string_new(NULL);
- int base_reg = orig_base_reg;
+ GDBFeatureBuilder builder;
+ char *name;
+ int reg = 0;
int i;
- g_string_printf(s, "<?xml version=\"1.0\"?>");
- g_string_append_printf(s, "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">");
- g_string_append_printf(s, "<feature name=\"org.gnu.gdb.arm.secext\">\n");
+ gdb_feature_builder_init(&builder, &cpu->dyn_m_secextreg_feature.desc,
+ "org.gnu.gdb.arm.secext", "arm-m-secext.xml",
+ base_reg);
for (i = 0; i < ARRAY_SIZE(m_sysreg_def); i++) {
- g_string_append_printf(s,
- "<reg name=\"%s_ns\" bitsize=\"32\" regnum=\"%d\"/>\n",
- m_sysreg_def[i].name, base_reg++);
- g_string_append_printf(s,
- "<reg name=\"%s_s\" bitsize=\"32\" regnum=\"%d\"/>\n",
- m_sysreg_def[i].name, base_reg++);
+ name = g_strconcat(m_sysreg_def[i].name, "_ns", NULL);
+ gdb_feature_builder_append_reg(&builder, name, 32, reg++,
+ "int", NULL);
+ name = g_strconcat(m_sysreg_def[i].name, "_s", NULL);
+ gdb_feature_builder_append_reg(&builder, name, 32, reg++,
+ "int", NULL);
}
- g_string_append_printf(s, "</feature>");
- cpu->dyn_m_secextreg_xml.desc = g_string_free(s, false);
- cpu->dyn_m_secextreg_xml.num = base_reg - orig_base_reg;
+ gdb_feature_builder_end(&builder);
- return cpu->dyn_m_secextreg_xml.num;
+ return &cpu->dyn_m_secextreg_feature.desc;
}
#endif
#endif /* CONFIG_TCG */
@@ -462,14 +458,14 @@ const char *arm_gdb_get_dynamic_xml(CPUState *cs, const char *xmlname)
ARMCPU *cpu = ARM_CPU(cs);
if (strcmp(xmlname, "system-registers.xml") == 0) {
- return cpu->dyn_sysreg_xml.desc;
+ return cpu->dyn_sysreg_feature.desc.xml;
} else if (strcmp(xmlname, "sve-registers.xml") == 0) {
- return cpu->dyn_svereg_xml.desc;
+ return cpu->dyn_svereg_feature.desc.xml;
} else if (strcmp(xmlname, "arm-m-system.xml") == 0) {
- return cpu->dyn_m_systemreg_xml.desc;
+ return cpu->dyn_m_systemreg_feature.desc.xml;
#ifndef CONFIG_USER_ONLY
} else if (strcmp(xmlname, "arm-m-secext.xml") == 0) {
- return cpu->dyn_m_secextreg_xml.desc;
+ return cpu->dyn_m_secextreg_feature.desc.xml;
#endif
}
return NULL;
@@ -487,7 +483,7 @@ void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu)
*/
#ifdef TARGET_AARCH64
if (isar_feature_aa64_sve(&cpu->isar)) {
- int nreg = arm_gen_dynamic_svereg_xml(cs, cs->gdb_num_regs);
+ int nreg = arm_gen_dynamic_svereg_feature(cs, cs->gdb_num_regs)->num_regs;
gdb_register_coprocessor(cs, aarch64_gdb_get_sve_reg,
aarch64_gdb_set_sve_reg, nreg,
"sve-registers.xml", 0);
@@ -533,20 +529,20 @@ void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu)
1, "arm-m-profile-mve.xml", 0);
}
gdb_register_coprocessor(cs, arm_gdb_get_sysreg, arm_gdb_set_sysreg,
- arm_gen_dynamic_sysreg_xml(cs, cs->gdb_num_regs),
+ arm_gen_dynamic_sysreg_feature(cs, cs->gdb_num_regs)->num_regs,
"system-registers.xml", 0);
#ifdef CONFIG_TCG
if (arm_feature(env, ARM_FEATURE_M) && tcg_enabled()) {
gdb_register_coprocessor(cs,
arm_gdb_get_m_systemreg, arm_gdb_set_m_systemreg,
- arm_gen_dynamic_m_systemreg_xml(cs, cs->gdb_num_regs),
+ arm_gen_dynamic_m_systemreg_feature(cs, cs->gdb_num_regs)->num_regs,
"arm-m-system.xml", 0);
#ifndef CONFIG_USER_ONLY
if (arm_feature(env, ARM_FEATURE_M_SECURITY)) {
gdb_register_coprocessor(cs,
arm_gdb_get_m_secextreg, arm_gdb_set_m_secextreg,
- arm_gen_dynamic_m_secextreg_xml(cs, cs->gdb_num_regs),
+ arm_gen_dynamic_m_secextreg_feature(cs, cs->gdb_num_regs)->num_regs,
"arm-m-secext.xml", 0);
}
#endif
diff --git a/target/arm/gdbstub64.c b/target/arm/gdbstub64.c
index d7b79a6589b..5286d5c6043 100644
--- a/target/arm/gdbstub64.c
+++ b/target/arm/gdbstub64.c
@@ -247,7 +247,7 @@ int aarch64_gdb_set_pauth_reg(CPUARMState *env, uint8_t *buf, int reg)
return 0;
}
-static void output_vector_union_type(GString *s, int reg_width,
+static void output_vector_union_type(GDBFeatureBuilder *builder, int reg_width,
const char *name)
{
struct TypeSize {
@@ -282,10 +282,10 @@ static void output_vector_union_type(GString *s, int reg_width,
/* First define types and totals in a whole VL */
for (i = 0; i < ARRAY_SIZE(vec_lanes); i++) {
- g_string_append_printf(s,
- "<vector id=\"%s%c%c\" type=\"%s\" count=\"%d\"/>",
- name, vec_lanes[i].sz, vec_lanes[i].suffix,
- vec_lanes[i].gdb_type, reg_width / vec_lanes[i].size);
+ gdb_feature_builder_append_tag(
+ builder, "<vector id=\"%s%c%c\" type=\"%s\" count=\"%d\"/>",
+ name, vec_lanes[i].sz, vec_lanes[i].suffix,
+ vec_lanes[i].gdb_type, reg_width / vec_lanes[i].size);
}
/*
@@ -296,86 +296,77 @@ static void output_vector_union_type(GString *s, int reg_width,
for (i = 0; i < ARRAY_SIZE(suf); i++) {
int bits = 8 << i;
- g_string_append_printf(s, "<union id=\"%sn%c\">", name, suf[i]);
+ gdb_feature_builder_append_tag(builder, "<union id=\"%sn%c\">",
+ name, suf[i]);
for (j = 0; j < ARRAY_SIZE(vec_lanes); j++) {
if (vec_lanes[j].size == bits) {
- g_string_append_printf(s, "<field name=\"%c\" type=\"%s%c%c\"/>",
- vec_lanes[j].suffix, name,
- vec_lanes[j].sz, vec_lanes[j].suffix);
+ gdb_feature_builder_append_tag(
+ builder, "<field name=\"%c\" type=\"%s%c%c\"/>",
+ vec_lanes[j].suffix, name,
+ vec_lanes[j].sz, vec_lanes[j].suffix);
}
}
- g_string_append(s, "</union>");
+ gdb_feature_builder_append_tag(builder, "</union>");
}
/* And now the final union of unions */
- g_string_append_printf(s, "<union id=\"%s\">", name);
+ gdb_feature_builder_append_tag(builder, "<union id=\"%s\">", name);
for (i = ARRAY_SIZE(suf) - 1; i >= 0; i--) {
- g_string_append_printf(s, "<field name=\"%c\" type=\"%sn%c\"/>",
- suf[i], name, suf[i]);
+ gdb_feature_builder_append_tag(builder,
+ "<field name=\"%c\" type=\"%sn%c\"/>",
+ suf[i], name, suf[i]);
}
- g_string_append(s, "</union>");
+ gdb_feature_builder_append_tag(builder, "</union>");
}
-int arm_gen_dynamic_svereg_xml(CPUState *cs, int orig_base_reg)
+GDBFeature *arm_gen_dynamic_svereg_feature(CPUState *cs, int base_reg)
{
ARMCPU *cpu = ARM_CPU(cs);
- GString *s = g_string_new(NULL);
- DynamicGDBXMLInfo *info = &cpu->dyn_svereg_xml;
int reg_width = cpu->sve_max_vq * 128;
int pred_width = cpu->sve_max_vq * 16;
- int base_reg = orig_base_reg;
+ GDBFeatureBuilder builder;
+ char *name;
+ int reg = 0;
int i;
- g_string_printf(s, "<?xml version=\"1.0\"?>");
- g_string_append_printf(s, "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">");
- g_string_append_printf(s, "<feature name=\"org.gnu.gdb.aarch64.sve\">");
+ gdb_feature_builder_init(&builder, &cpu->dyn_svereg_feature.desc,
+ "org.gnu.gdb.aarch64.sve", "sve-registers.xml",
+ base_reg);
/* Create the vector union type. */
- output_vector_union_type(s, reg_width, "svev");
+ output_vector_union_type(&builder, reg_width, "svev");
/* Create the predicate vector type. */
- g_string_append_printf(s,
- "<vector id=\"svep\" type=\"uint8\" count=\"%d\"/>",
- pred_width / 8);
+ gdb_feature_builder_append_tag(
+ &builder, "<vector id=\"svep\" type=\"uint8\" count=\"%d\"/>",
+ pred_width / 8);
/* Define the vector registers. */
for (i = 0; i < 32; i++) {
- g_string_append_printf(s,
- "<reg name=\"z%d\" bitsize=\"%d\""
- " regnum=\"%d\" type=\"svev\"/>",
- i, reg_width, base_reg++);
+ name = g_strdup_printf("z%d", i);
+ gdb_feature_builder_append_reg(&builder, name, reg_width, reg++,
+ "svev", NULL);
}
/* fpscr & status registers */
- g_string_append_printf(s, "<reg name=\"fpsr\" bitsize=\"32\""
- " regnum=\"%d\" group=\"float\""
- " type=\"int\"/>", base_reg++);
- g_string_append_printf(s, "<reg name=\"fpcr\" bitsize=\"32\""
- " regnum=\"%d\" group=\"float\""
- " type=\"int\"/>", base_reg++);
+ gdb_feature_builder_append_reg(&builder, "fpsr", 32, reg++,
+ "int", "float");
+ gdb_feature_builder_append_reg(&builder, "fpcr", 32, reg++,
+ "int", "float");
/* Define the predicate registers. */
for (i = 0; i < 16; i++) {
- g_string_append_printf(s,
- "<reg name=\"p%d\" bitsize=\"%d\""
- " regnum=\"%d\" type=\"svep\"/>",
- i, pred_width, base_reg++);
+ name = g_strdup_printf("p%d", i);
+ gdb_feature_builder_append_reg(&builder, name, pred_width, reg++,
+ "svep", NULL);
}
- g_string_append_printf(s,
- "<reg name=\"ffr\" bitsize=\"%d\""
- " regnum=\"%d\" group=\"vector\""
- " type=\"svep\"/>",
- pred_width, base_reg++);
+ gdb_feature_builder_append_reg(&builder, "ffr", pred_width, reg++,
+ "svep", "vector");
/* Define the vector length pseudo-register. */
- g_string_append_printf(s,
- "<reg name=\"vg\" bitsize=\"64\""
- " regnum=\"%d\" type=\"int\"/>",
- base_reg++);
+ gdb_feature_builder_append_reg(&builder, "vg", 64, reg++, "int", NULL);
- g_string_append_printf(s, "</feature>");
+ gdb_feature_builder_end(&builder);
- info->desc = g_string_free(s, false);
- info->num = base_reg - orig_base_reg;
- return info->num;
+ return &cpu->dyn_svereg_feature.desc;
}
--
2.39.2
