hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

kgdb,ppc: Individual register get/set for ppc 

commit 534af1082329392bc29f6badf815e69ae2ae0f4c(kgdb,kdb: individual
register set and and get API) introduce dbg_get_reg/dbg_set_reg API
for individual register get and set.

This patch implement those APIs for ppc.

Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
This commit is contained in:
Dongdong Deng 2010-10-27 21:47:00 -05:00 committed by Jason Wessel
parent 4dacd5c073
commit ff10b88b5a
2 changed files with 129 additions and 66 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/powerpc/include/asm/kgdb.h
View File

@ -31,6 +31,7 @@ static inline void arch_kgdb_breakpoint(void)
asm(".long 0x7d821008"); /* twge r2, r2 */ asm(".long 0x7d821008"); /* twge r2, r2 */
} }
#define CACHE_FLUSH_IS_SAFE 1 #define CACHE_FLUSH_IS_SAFE 1
#define DBG_MAX_REG_NUM 70
/* The number bytes of registers we have to save depends on a few /* The number bytes of registers we have to save depends on a few
* things. For 64bit we default to not including vector registers and * things. For 64bit we default to not including vector registers and

194
arch/powerpc/kernel/kgdb.c
View File

@ -194,40 +194,6 @@ static int kgdb_dabr_match(struct pt_regs *regs)
ptr = (unsigned long *)ptr32; \ ptr = (unsigned long *)ptr32; \
} while (0) } while (0)
void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
{
unsigned long *ptr = gdb_regs;
int reg;
memset(gdb_regs, 0, NUMREGBYTES);
for (reg = 0; reg < 32; reg++)
PACK64(ptr, regs->gpr[reg]);
#ifdef CONFIG_FSL_BOOKE
#ifdef CONFIG_SPE
for (reg = 0; reg < 32; reg++)
PACK64(ptr, current->thread.evr[reg]);
#else
ptr += 32;
#endif
#else
/* fp registers not used by kernel, leave zero */
ptr += 32 * 8 / sizeof(long);
#endif
PACK64(ptr, regs->nip);
PACK64(ptr, regs->msr);
PACK32(ptr, regs->ccr);
PACK64(ptr, regs->link);
PACK64(ptr, regs->ctr);
PACK32(ptr, regs->xer);
BUG_ON((unsigned long)ptr >
(unsigned long)(((void *)gdb_regs) + NUMREGBYTES));
}
void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p) void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
{ {
struct pt_regs *regs = (struct pt_regs *)(p->thread.ksp + struct pt_regs *regs = (struct pt_regs *)(p->thread.ksp +
@ -271,44 +237,140 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
(unsigned long)(((void *)gdb_regs) + NUMREGBYTES)); (unsigned long)(((void *)gdb_regs) + NUMREGBYTES));
} }
#define UNPACK64(dest, ptr) do { dest = *(ptr++); } while (0) #define GDB_SIZEOF_REG sizeof(unsigned long)
#define GDB_SIZEOF_REG_U32 sizeof(u32)
#define UNPACK32(dest, ptr) do { \
u32 *ptr32; \
ptr32 = (u32 *)ptr; \
dest = *(ptr32++); \
ptr = (unsigned long *)ptr32; \
} while (0)
void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
{
unsigned long *ptr = gdb_regs;
int reg;
for (reg = 0; reg < 32; reg++)
UNPACK64(regs->gpr[reg], ptr);
#ifdef CONFIG_FSL_BOOKE #ifdef CONFIG_FSL_BOOKE
#ifdef CONFIG_SPE #define GDB_SIZEOF_FLOAT_REG sizeof(unsigned long)
for (reg = 0; reg < 32; reg++)
UNPACK64(current->thread.evr[reg], ptr);
#else #else
ptr += 32; #define GDB_SIZEOF_FLOAT_REG sizeof(u64)
#endif
#else
/* fp registers not used by kernel, leave zero */
ptr += 32 * 8 / sizeof(int);
#endif #endif
UNPACK64(regs->nip, ptr); struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] =
UNPACK64(regs->msr, ptr); {
UNPACK32(regs->ccr, ptr); { "r0", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[0]) },
UNPACK64(regs->link, ptr); { "r1", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[1]) },
UNPACK64(regs->ctr, ptr); { "r2", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[2]) },
UNPACK32(regs->xer, ptr); { "r3", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[3]) },
{ "r4", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[4]) },
{ "r5", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[5]) },
{ "r6", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[6]) },
{ "r7", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[7]) },
{ "r8", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[8]) },
{ "r9", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[9]) },
{ "r10", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[10]) },
{ "r11", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[11]) },
{ "r12", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[12]) },
{ "r13", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[13]) },
{ "r14", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[14]) },
{ "r15", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[15]) },
{ "r16", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[16]) },
{ "r17", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[17]) },
{ "r18", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[18]) },
{ "r19", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[19]) },
{ "r20", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[20]) },
{ "r21", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[21]) },
{ "r22", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[22]) },
{ "r23", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[23]) },
{ "r24", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[24]) },
{ "r25", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[25]) },
{ "r26", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[26]) },
{ "r27", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[27]) },
{ "r28", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[28]) },
{ "r29", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[29]) },
{ "r30", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[30]) },
{ "r31", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[31]) },
BUG_ON((unsigned long)ptr > { "f0", GDB_SIZEOF_FLOAT_REG, 0 },
(unsigned long)(((void *)gdb_regs) + NUMREGBYTES)); { "f1", GDB_SIZEOF_FLOAT_REG, 1 },
{ "f2", GDB_SIZEOF_FLOAT_REG, 2 },
{ "f3", GDB_SIZEOF_FLOAT_REG, 3 },
{ "f4", GDB_SIZEOF_FLOAT_REG, 4 },
{ "f5", GDB_SIZEOF_FLOAT_REG, 5 },
{ "f6", GDB_SIZEOF_FLOAT_REG, 6 },
{ "f7", GDB_SIZEOF_FLOAT_REG, 7 },
{ "f8", GDB_SIZEOF_FLOAT_REG, 8 },
{ "f9", GDB_SIZEOF_FLOAT_REG, 9 },
{ "f10", GDB_SIZEOF_FLOAT_REG, 10 },
{ "f11", GDB_SIZEOF_FLOAT_REG, 11 },
{ "f12", GDB_SIZEOF_FLOAT_REG, 12 },
{ "f13", GDB_SIZEOF_FLOAT_REG, 13 },
{ "f14", GDB_SIZEOF_FLOAT_REG, 14 },
{ "f15", GDB_SIZEOF_FLOAT_REG, 15 },
{ "f16", GDB_SIZEOF_FLOAT_REG, 16 },
{ "f17", GDB_SIZEOF_FLOAT_REG, 17 },
{ "f18", GDB_SIZEOF_FLOAT_REG, 18 },
{ "f19", GDB_SIZEOF_FLOAT_REG, 19 },
{ "f20", GDB_SIZEOF_FLOAT_REG, 20 },
{ "f21", GDB_SIZEOF_FLOAT_REG, 21 },
{ "f22", GDB_SIZEOF_FLOAT_REG, 22 },
{ "f23", GDB_SIZEOF_FLOAT_REG, 23 },
{ "f24", GDB_SIZEOF_FLOAT_REG, 24 },
{ "f25", GDB_SIZEOF_FLOAT_REG, 25 },
{ "f26", GDB_SIZEOF_FLOAT_REG, 26 },
{ "f27", GDB_SIZEOF_FLOAT_REG, 27 },
{ "f28", GDB_SIZEOF_FLOAT_REG, 28 },
{ "f29", GDB_SIZEOF_FLOAT_REG, 29 },
{ "f30", GDB_SIZEOF_FLOAT_REG, 30 },
{ "f31", GDB_SIZEOF_FLOAT_REG, 31 },
{ "pc", GDB_SIZEOF_REG, offsetof(struct pt_regs, nip) },
{ "msr", GDB_SIZEOF_REG, offsetof(struct pt_regs, msr) },
{ "cr", GDB_SIZEOF_REG_U32, offsetof(struct pt_regs, ccr) },
{ "lr", GDB_SIZEOF_REG, offsetof(struct pt_regs, link) },
{ "ctr", GDB_SIZEOF_REG_U32, offsetof(struct pt_regs, ctr) },
{ "xer", GDB_SIZEOF_REG, offsetof(struct pt_regs, xer) },
};
char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)
{
if (regno >= DBG_MAX_REG_NUM || regno < 0)
return NULL;
if (regno < 32 || regno >= 64)
/* First 0 -> 31 gpr registers*/
/* pc, msr, ls... registers 64 -> 69 */
memcpy(mem, (void *)regs + dbg_reg_def[regno].offset,
dbg_reg_def[regno].size);
if (regno >= 32 && regno < 64) {
/* FP registers 32 -> 63 */
#if defined(CONFIG_FSL_BOOKE) && defined(CONFIG_SPE)
if (current)
memcpy(mem, current->thread.evr[regno-32],
dbg_reg_def[regno].size);
#else
/* fp registers not used by kernel, leave zero */
memset(mem, 0, dbg_reg_def[regno].size);
#endif
}
return dbg_reg_def[regno].name;
}
int dbg_set_reg(int regno, void *mem, struct pt_regs *regs)
{
if (regno >= DBG_MAX_REG_NUM || regno < 0)
return -EINVAL;
if (regno < 32 || regno >= 64)
/* First 0 -> 31 gpr registers*/
/* pc, msr, ls... registers 64 -> 69 */
memcpy((void *)regs + dbg_reg_def[regno].offset, mem,
dbg_reg_def[regno].size);
if (regno >= 32 && regno < 64) {
/* FP registers 32 -> 63 */
#if defined(CONFIG_FSL_BOOKE) && defined(CONFIG_SPE)
memcpy(current->thread.evr[regno-32], mem,
dbg_reg_def[regno].size);
#else
/* fp registers not used by kernel, leave zero */
return 0;
#endif
}
return 0;
} }
void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc) void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc)