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cpu: Introduce CPUState::gdb_num_regs and CPUClass::gdb_num_core_regs 

CPUState::gdb_num_regs replaces num_g_regs.
CPUClass::gdb_num_core_regs replaces NUM_CORE_REGS.

Allows building gdb_register_coprocessor() for xtensa, too.

As a side effect this should fix coprocessor register numbering for SMP.

Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa)
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Andreas Färber 2013-06-28 23:18:47 +02:00
parent 19a77215f1
commit a0e372f0c4
18 changed files with 66 additions and 65 deletions
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83
gdbstub.c
View File

@ -530,8 +530,6 @@ static const int gpr_map[16] = {
#endif
static const int gpr_map32[8] = { 0, 1, 2, 3, 4, 5, 6, 7 };
#define NUM_CORE_REGS (CPU_NB_REGS * 2 + 25)
#define IDX_IP_REG CPU_NB_REGS
#define IDX_FLAGS_REG (IDX_IP_REG + 1)
#define IDX_SEG_REGS (IDX_FLAGS_REG + 1)
@ -732,7 +730,6 @@ static int cpu_gdb_write_register(CPUX86State *env, uint8_t *mem_buf, int n)
historical mishap the FP registers appear in between core integer
regs and PC, MSR, CR, and so forth. We hack round this by giving the
FP regs zero size when talking to a newer gdb. */
#define NUM_CORE_REGS 71
#if defined (TARGET_PPC64)
#define GDB_CORE_XML "power64-core.xml"
#else
@ -837,12 +834,6 @@ static int cpu_gdb_write_register(CPUPPCState *env, uint8_t *mem_buf, int n)
#elif defined (TARGET_SPARC)
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
#define NUM_CORE_REGS 86
#else
#define NUM_CORE_REGS 72
#endif
#ifdef TARGET_ABI32
#define GET_REGA(val) GET_REG32(val)
#else
@ -1030,7 +1021,6 @@ static int cpu_gdb_write_register(CPUSPARCState *env, uint8_t *mem_buf, int n)
the FPA registers appear in between core integer regs and the CPSR.
We hack round this by giving the FPA regs zero size when talking to a
newer gdb. */
#define NUM_CORE_REGS 26
#define GDB_CORE_XML "arm-core.xml"
static int cpu_gdb_read_register(CPUARMState *env, uint8_t *mem_buf, int n)
@ -1104,8 +1094,6 @@ static int cpu_gdb_write_register(CPUARMState *env, uint8_t *mem_buf, int n)
#elif defined (TARGET_M68K)
#define NUM_CORE_REGS 18
#define GDB_CORE_XML "cf-core.xml"
static int cpu_gdb_read_register(CPUM68KState *env, uint8_t *mem_buf, int n)
@ -1157,8 +1145,6 @@ static int cpu_gdb_write_register(CPUM68KState *env, uint8_t *mem_buf, int n)
}
#elif defined (TARGET_MIPS)
#define NUM_CORE_REGS 73
static int cpu_gdb_read_register(CPUMIPSState *env, uint8_t *mem_buf, int n)
{
if (n < 32) {
@ -1285,8 +1271,6 @@ static int cpu_gdb_write_register(CPUMIPSState *env, uint8_t *mem_buf, int n)
}
#elif defined(TARGET_OPENRISC)
#define NUM_CORE_REGS (32 + 3)
static int cpu_gdb_read_register(CPUOpenRISCState *env, uint8_t *mem_buf, int n)
{
if (n < 32) {
@ -1312,9 +1296,11 @@ static int cpu_gdb_read_register(CPUOpenRISCState *env, uint8_t *mem_buf, int n)
static int cpu_gdb_write_register(CPUOpenRISCState *env,
uint8_t *mem_buf, int n)
{
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
CPUClass *cc = CPU_GET_CLASS(cpu);
uint32_t tmp;
if (n > NUM_CORE_REGS) {
if (n > cc->gdb_num_core_regs) {
return 0;
}
@ -1347,8 +1333,6 @@ static int cpu_gdb_write_register(CPUOpenRISCState *env,
/* Hint: Use "set architecture sh4" in GDB to see fpu registers */
/* FIXME: We should use XML for this. */
#define NUM_CORE_REGS 59
static int cpu_gdb_read_register(CPUSH4State *env, uint8_t *mem_buf, int n)
{
switch (n) {
@ -1465,8 +1449,6 @@ static int cpu_gdb_write_register(CPUSH4State *env, uint8_t *mem_buf, int n)
}
#elif defined (TARGET_MICROBLAZE)
#define NUM_CORE_REGS (32 + 5)
static int cpu_gdb_read_register(CPUMBState *env, uint8_t *mem_buf, int n)
{
if (n < 32) {
@ -1479,9 +1461,11 @@ static int cpu_gdb_read_register(CPUMBState *env, uint8_t *mem_buf, int n)
static int cpu_gdb_write_register(CPUMBState *env, uint8_t *mem_buf, int n)
{
MicroBlazeCPU *cpu = mb_env_get_cpu(env);
CPUClass *cc = CPU_GET_CLASS(cpu);
uint32_t tmp;
if (n > NUM_CORE_REGS) {
if (n > cc->gdb_num_core_regs) {
return 0;
}
@ -1496,8 +1480,6 @@ static int cpu_gdb_write_register(CPUMBState *env, uint8_t *mem_buf, int n)
}
#elif defined (TARGET_CRIS)
#define NUM_CORE_REGS 49
static int
read_register_crisv10(CPUCRISState *env, uint8_t *mem_buf, int n)
{
@ -1605,8 +1587,6 @@ static int cpu_gdb_write_register(CPUCRISState *env, uint8_t *mem_buf, int n)
}
#elif defined (TARGET_ALPHA)
#define NUM_CORE_REGS 67
static int cpu_gdb_read_register(CPUAlphaState *env, uint8_t *mem_buf, int n)
{
uint64_t val;
@ -1675,8 +1655,6 @@ static int cpu_gdb_write_register(CPUAlphaState *env, uint8_t *mem_buf, int n)
}
#elif defined (TARGET_S390X)
#define NUM_CORE_REGS S390_NUM_REGS
static int cpu_gdb_read_register(CPUS390XState *env, uint8_t *mem_buf, int n)
{
uint64_t val;
@ -1740,7 +1718,6 @@ static int cpu_gdb_write_register(CPUS390XState *env, uint8_t *mem_buf, int n)
#elif defined (TARGET_LM32)
#include "hw/lm32/lm32_pic.h"
#define NUM_CORE_REGS (32 + 7)
static int cpu_gdb_read_register(CPULM32State *env, uint8_t *mem_buf, int n)
{
@ -1770,9 +1747,11 @@ static int cpu_gdb_read_register(CPULM32State *env, uint8_t *mem_buf, int n)
static int cpu_gdb_write_register(CPULM32State *env, uint8_t *mem_buf, int n)
{
LM32CPU *cpu = lm32_env_get_cpu(env);
CPUClass *cc = CPU_GET_CLASS(cpu);
uint32_t tmp;
if (n > NUM_CORE_REGS) {
if (n > cc->gdb_num_core_regs) {
return 0;
}
@ -1806,14 +1785,6 @@ static int cpu_gdb_write_register(CPULM32State *env, uint8_t *mem_buf, int n)
}
#elif defined(TARGET_XTENSA)
/* Use num_core_regs to see only non-privileged registers in an unmodified gdb.
* Use num_regs to see all registers. gdb modification is required for that:
* reset bit 0 in the 'flags' field of the registers definitions in the
* gdb/xtensa-config.c inside gdb source tree or inside gdb overlay.
*/
#define NUM_CORE_REGS (env->config->gdb_regmap.num_regs)
#define num_g_regs NUM_CORE_REGS
static int cpu_gdb_read_register(CPUXtensaState *env, uint8_t *mem_buf, int n)
{
const XtensaGdbReg *reg = env->config->gdb_regmap.reg + n;
@ -1896,8 +1867,6 @@ static int cpu_gdb_write_register(CPUXtensaState *env, uint8_t *mem_buf, int n)
}
#else
#define NUM_CORE_REGS 0
static int cpu_gdb_read_register(CPUArchState *env, uint8_t *mem_buf, int n)
{
return 0;
@ -1910,10 +1879,6 @@ static int cpu_gdb_write_register(CPUArchState *env, uint8_t *mem_buf, int n)
#endif
#if !defined(TARGET_XTENSA)
static int num_g_regs = NUM_CORE_REGS;
#endif
#ifdef GDB_CORE_XML
/* Encode data using the encoding for 'x' packets. */
static int memtox(char *buf, const char *mem, int len)
@ -1982,11 +1947,13 @@ static const char *get_feature_xml(const char *p, const char **newp)
static int gdb_read_register(CPUState *cpu, uint8_t *mem_buf, int reg)
{
CPUClass *cc = CPU_GET_CLASS(cpu);
CPUArchState *env = cpu->env_ptr;
GDBRegisterState *r;
if (reg < NUM_CORE_REGS)
if (reg < cc->gdb_num_core_regs) {
return cpu_gdb_read_register(env, mem_buf, reg);
}
for (r = cpu->gdb_regs; r; r = r->next) {
if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) {
@ -1998,11 +1965,13 @@ static int gdb_read_register(CPUState *cpu, uint8_t *mem_buf, int reg)
static int gdb_write_register(CPUState *cpu, uint8_t *mem_buf, int reg)
{
CPUClass *cc = CPU_GET_CLASS(cpu);
CPUArchState *env = cpu->env_ptr;
GDBRegisterState *r;
if (reg < NUM_CORE_REGS)
if (reg < cc->gdb_num_core_regs) {
return cpu_gdb_write_register(env, mem_buf, reg);
}
for (r = cpu->gdb_regs; r; r = r->next) {
if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) {
@ -2012,7 +1981,6 @@ static int gdb_write_register(CPUState *cpu, uint8_t *mem_buf, int reg)
return 0;
}
#if !defined(TARGET_XTENSA)
/* Register a supplemental set of CPU registers. If g_pos is nonzero it
specifies the first register number and these registers are included in
a standard "g" packet. Direction is relative to gdb, i.e. get_reg is
@ -2025,7 +1993,6 @@ void gdb_register_coprocessor(CPUState *cpu,
{
GDBRegisterState *s;
GDBRegisterState **p;
static int last_reg = NUM_CORE_REGS;
p = &cpu->gdb_regs;
while (*p) {
@ -2036,25 +2003,22 @@ void gdb_register_coprocessor(CPUState *cpu,
}
s = g_new0(GDBRegisterState, 1);
s->base_reg = last_reg;
s->base_reg = cpu->gdb_num_regs;
s->num_regs = num_regs;
s->get_reg = get_reg;
s->set_reg = set_reg;
s->xml = xml;
/* Add to end of list. */
last_reg += num_regs;
cpu->gdb_num_regs += num_regs;
*p = s;
if (g_pos) {
if (g_pos != s->base_reg) {
fprintf(stderr, "Error: Bad gdb register numbering for '%s'\n"
"Expected %d got %d\n", xml, g_pos, s->base_reg);
} else {
num_g_regs = last_reg;
}
}
}
#endif
#ifndef CONFIG_USER_ONLY
static const int xlat_gdb_type[] = {
@ -2184,9 +2148,6 @@ static CPUState *find_cpu(uint32_t thread_id)
static int gdb_handle_packet(GDBState *s, const char *line_buf)
{
#ifdef TARGET_XTENSA
CPUArchState *env;
#endif
CPUState *cpu;
const char *p;
uint32_t thread;
@ -2334,11 +2295,8 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
break;
case 'g':
cpu_synchronize_state(s->g_cpu);
#ifdef TARGET_XTENSA
env = s->g_cpu->env_ptr;
#endif
len = 0;
for (addr = 0; addr < num_g_regs; addr++) {
for (addr = 0; addr < s->g_cpu->gdb_num_regs; addr++) {
reg_size = gdb_read_register(s->g_cpu, mem_buf + len, addr);
len += reg_size;
}
@ -2347,13 +2305,10 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
break;
case 'G':
cpu_synchronize_state(s->g_cpu);
#ifdef TARGET_XTENSA
env = s->g_cpu->env_ptr;
#endif
registers = mem_buf;
len = strlen(p) / 2;
hextomem((uint8_t *)registers, p, len);
for (addr = 0; addr < num_g_regs && len > 0; addr++) {
for (addr = 0; addr < s->g_cpu->gdb_num_regs && len > 0; addr++) {
reg_size = gdb_write_register(s->g_cpu, registers, addr);
len -= reg_size;
registers += reg_size;

7
include/qom/cpu.h
View File

@ -81,6 +81,7 @@ struct TranslationBlock;
* #TranslationBlock.
* @get_phys_page_debug: Callback for obtaining a physical address.
* @vmsd: State description for migration.
* @gdb_num_core_regs: Number of core registers accessible to GDB.
*
* Represents a CPU family or model.
*/
@ -109,7 +110,6 @@ typedef struct CPUClass {
void (*synchronize_from_tb)(CPUState *cpu, struct TranslationBlock *tb);
hwaddr (*get_phys_page_debug)(CPUState *cpu, vaddr addr);
const struct VMStateDescription *vmsd;
int (*write_elf64_note)(WriteCoreDumpFunction f, CPUState *cpu,
int cpuid, void *opaque);
int (*write_elf64_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
@ -118,6 +118,9 @@ typedef struct CPUClass {
int cpuid, void *opaque);
int (*write_elf32_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
void *opaque);
const struct VMStateDescription *vmsd;
int gdb_num_core_regs;
} CPUClass;
struct KVMState;
@ -142,6 +145,7 @@ struct kvm_run;
* @env_ptr: Pointer to subclass-specific CPUArchState field.
* @current_tb: Currently executing TB.
* @gdb_regs: Additional GDB registers.
* @gdb_num_regs: Number of total registers accessible to GDB.
* @next_cpu: Next CPU sharing TB cache.
* @kvm_fd: vCPU file descriptor for KVM.
*
@ -177,6 +181,7 @@ struct CPUState {
void *env_ptr; /* CPUArchState */
struct TranslationBlock *current_tb;
struct GDBRegisterState *gdb_regs;
int gdb_num_regs;
CPUState *next_cpu;
int kvm_fd;

9
qom/cpu.c
View File

@ -226,6 +226,14 @@ static void cpu_common_realizefn(DeviceState *dev, Error **errp)
}
}
static void cpu_common_initfn(Object *obj)
{
CPUState *cpu = CPU(obj);
CPUClass *cc = CPU_GET_CLASS(obj);
cpu->gdb_num_regs = cc->gdb_num_core_regs;
}
static int64_t cpu_common_get_arch_id(CPUState *cpu)
{
return cpu->cpu_index;
@ -253,6 +261,7 @@ static const TypeInfo cpu_type_info = {
.name = TYPE_CPU,
.parent = TYPE_DEVICE,
.instance_size = sizeof(CPUState),
.instance_init = cpu_common_initfn,
.abstract = true,
.class_size = sizeof(CPUClass),
.class_init = cpu_class_init,

1
target-alpha/cpu.c
View File

@ -276,6 +276,7 @@ static void alpha_cpu_class_init(ObjectClass *oc, void *data)
cc->get_phys_page_debug = alpha_cpu_get_phys_page_debug;
dc->vmsd = &vmstate_alpha_cpu;
#endif
cc->gdb_num_core_regs = 67;
}
static const TypeInfo alpha_cpu_type_info = {

1
target-arm/cpu.c
View File

@ -828,6 +828,7 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
cc->get_phys_page_debug = arm_cpu_get_phys_page_debug;
cc->vmsd = &vmstate_arm_cpu;
#endif
cc->gdb_num_core_regs = 26;
}
static void cpu_register(const ARMCPUInfo *info)

2
target-cris/cpu.c
View File

@ -258,6 +258,8 @@ static void cris_cpu_class_init(ObjectClass *oc, void *data)
#ifndef CONFIG_USER_ONLY
cc->get_phys_page_debug = cris_cpu_get_phys_page_debug;
#endif
cc->gdb_num_core_regs = 49;
}
static const TypeInfo cris_cpu_type_info = {

1
target-i386/cpu.c
View File

@ -2549,6 +2549,7 @@ static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
cc->write_elf32_qemunote = x86_cpu_write_elf32_qemunote;
cc->vmsd = &vmstate_x86_cpu;
#endif
cc->gdb_num_core_regs = CPU_NB_REGS * 2 + 25;
}
static const TypeInfo x86_cpu_type_info = {

1
target-lm32/cpu.c
View File

@ -91,6 +91,7 @@ static void lm32_cpu_class_init(ObjectClass *oc, void *data)
cc->get_phys_page_debug = lm32_cpu_get_phys_page_debug;
cc->vmsd = &vmstate_lm32_cpu;
#endif
cc->gdb_num_core_regs = 32 + 7;
}
static const TypeInfo lm32_cpu_type_info = {

1
target-m68k/cpu.c
View File

@ -194,6 +194,7 @@ static void m68k_cpu_class_init(ObjectClass *c, void *data)
cc->get_phys_page_debug = m68k_cpu_get_phys_page_debug;
#endif
dc->vmsd = &vmstate_m68k_cpu;
cc->gdb_num_core_regs = 18;
}
static void register_cpu_type(const M68kCPUInfo *info)

1
target-microblaze/cpu.c
View File

@ -147,6 +147,7 @@ static void mb_cpu_class_init(ObjectClass *oc, void *data)
#endif
dc->vmsd = &vmstate_mb_cpu;
dc->props = mb_properties;
cc->gdb_num_core_regs = 32 + 5;
}
static const TypeInfo mb_cpu_type_info = {

2
target-mips/cpu.c
View File

@ -104,6 +104,8 @@ static void mips_cpu_class_init(ObjectClass *c, void *data)
cc->do_unassigned_access = mips_cpu_unassigned_access;
cc->get_phys_page_debug = mips_cpu_get_phys_page_debug;
#endif
cc->gdb_num_core_regs = 73;
}
static const TypeInfo mips_cpu_type_info = {

1
target-openrisc/cpu.c
View File

@ -159,6 +159,7 @@ static void openrisc_cpu_class_init(ObjectClass *oc, void *data)
cc->get_phys_page_debug = openrisc_cpu_get_phys_page_debug;
dc->vmsd = &vmstate_openrisc_cpu;
#endif
cc->gdb_num_core_regs = 32 + 3;
}
static void cpu_register(const OpenRISCCPUInfo *info)

2
target-ppc/translate_init.c
View File

@ -8461,6 +8461,8 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data)
#ifndef CONFIG_USER_ONLY
cc->get_phys_page_debug = ppc_cpu_get_phys_page_debug;
#endif
cc->gdb_num_core_regs = 71;
}
static const TypeInfo ppc_cpu_type_info = {

1
target-s390x/cpu.c
View File

@ -177,6 +177,7 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
cc->get_phys_page_debug = s390_cpu_get_phys_page_debug;
#endif
dc->vmsd = &vmstate_s390_cpu;
cc->gdb_num_core_regs = S390_NUM_REGS;
}
static const TypeInfo s390_cpu_type_info = {

1
target-sh4/cpu.c
View File

@ -290,6 +290,7 @@ static void superh_cpu_class_init(ObjectClass *oc, void *data)
cc->get_phys_page_debug = superh_cpu_get_phys_page_debug;
#endif
dc->vmsd = &vmstate_sh_cpu;
cc->gdb_num_core_regs = 59;
}
static const TypeInfo superh_cpu_type_info = {

6
target-sparc/cpu.c
View File

@ -791,6 +791,12 @@ static void sparc_cpu_class_init(ObjectClass *oc, void *data)
cc->do_unassigned_access = sparc_cpu_unassigned_access;
cc->get_phys_page_debug = sparc_cpu_get_phys_page_debug;
#endif
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
cc->gdb_num_core_regs = 86;
#else
cc->gdb_num_core_regs = 72;
#endif
}
static const TypeInfo sparc_cpu_type_info = {

3
target-xtensa/cpu.c
View File

@ -85,8 +85,11 @@ static ObjectClass *xtensa_cpu_class_by_name(const char *cpu_model)
static void xtensa_cpu_realizefn(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(dev);
cs->gdb_num_regs = xcc->config->gdb_regmap.num_regs;
xcc->parent_realize(dev, errp);
}

8
target-xtensa/helper.c
View File

@ -37,10 +37,18 @@ static struct XtensaConfigList *xtensa_cores;
static void xtensa_core_class_init(ObjectClass *oc, void *data)
{
CPUClass *cc = CPU_CLASS(oc);
XtensaCPUClass *xcc = XTENSA_CPU_CLASS(oc);
const XtensaConfig *config = data;
xcc->config = config;
/* Use num_core_regs to see only non-privileged registers in an unmodified
* gdb. Use num_regs to see all registers. gdb modification is required
* for that: reset bit 0 in the 'flags' field of the registers definitions
* in the gdb/xtensa-config.c inside gdb source tree or inside gdb overlay.
*/
cc->gdb_num_core_regs = config->gdb_regmap.num_regs;
}
void xtensa_register_core(XtensaConfigList *node)