diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/kgdb.h | 5 | ||||
| -rw-r--r-- | arch/arm/kernel/kgdb.c | 2 | ||||
| -rw-r--r-- | arch/blackfin/kernel/kgdb.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/kgdb.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/kgdb.c | 188 | ||||
| -rw-r--r-- | arch/x86/kernel/kgdb.c | 3 |
6 files changed, 134 insertions, 68 deletions
diff --git a/arch/arm/include/asm/kgdb.h b/arch/arm/include/asm/kgdb.h index 08265993227..48066ce9ea3 100644 --- a/arch/arm/include/asm/kgdb.h +++ b/arch/arm/include/asm/kgdb.h @@ -70,7 +70,8 @@ extern int kgdb_fault_expected; #define _GP_REGS 16 #define _FP_REGS 8 #define _EXTRA_REGS 2 -#define DBG_MAX_REG_NUM (_GP_REGS + (_FP_REGS * 3) + _EXTRA_REGS) +#define GDB_MAX_REGS (_GP_REGS + (_FP_REGS * 3) + _EXTRA_REGS) +#define DBG_MAX_REG_NUM (_GP_REGS + _FP_REGS + _EXTRA_REGS) #define KGDB_MAX_NO_CPUS 1 #define BUFMAX 400 @@ -93,7 +94,7 @@ extern int kgdb_fault_expected; #define _SPT 13 #define _LR 14 #define _PC 15 -#define _CPSR (DBG_MAX_REG_NUM - 1) +#define _CPSR (GDB_MAX_REGS - 1) /* * So that we can denote the end of a frame for tracing, diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c index d6e8b4d2e60..778c2f7024f 100644 --- a/arch/arm/kernel/kgdb.c +++ b/arch/arm/kernel/kgdb.c @@ -79,7 +79,7 @@ sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *task) return; /* Initialize to zero */ - for (regno = 0; regno < DBG_MAX_REG_NUM; regno++) + for (regno = 0; regno < GDB_MAX_REGS; regno++) gdb_regs[regno] = 0; /* Otherwise, we have only some registers from switch_to() */ diff --git a/arch/blackfin/kernel/kgdb.c b/arch/blackfin/kernel/kgdb.c index 08bc44ea688..edae461b1c5 100644 --- a/arch/blackfin/kernel/kgdb.c +++ b/arch/blackfin/kernel/kgdb.c @@ -320,7 +320,7 @@ static void bfin_correct_hw_break(void) } } -void kgdb_disable_hw_debug(struct pt_regs *regs) +static void bfin_disable_hw_debug(struct pt_regs *regs) { /* Disable hardware debugging while we are in kgdb */ bfin_write_WPIACTL(0); @@ -406,6 +406,7 @@ struct kgdb_arch arch_kgdb_ops = { #endif .set_hw_breakpoint = bfin_set_hw_break, .remove_hw_breakpoint = bfin_remove_hw_break, + .disable_hw_break = bfin_disable_hw_debug, .remove_all_hw_break = bfin_remove_all_hw_break, .correct_hw_break = bfin_correct_hw_break, }; diff --git a/arch/powerpc/include/asm/kgdb.h b/arch/powerpc/include/asm/kgdb.h index edd217006d2..9db24e77b9f 100644 --- a/arch/powerpc/include/asm/kgdb.h +++ b/arch/powerpc/include/asm/kgdb.h @@ -31,6 +31,7 @@ static inline void arch_kgdb_breakpoint(void) asm(".long 0x7d821008"); /* twge r2, r2 */ } #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 * things. For 64bit we default to not including vector registers and diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c index 7f61a3ac787..7a9db64f3f0 100644 --- a/arch/powerpc/kernel/kgdb.c +++ b/arch/powerpc/kernel/kgdb.c @@ -194,40 +194,6 @@ static int kgdb_dabr_match(struct pt_regs *regs) ptr = (unsigned long *)ptr32; \ } 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) { 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)); } -#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) +#ifdef CONFIG_FSL_BOOKE +#define GDB_SIZEOF_FLOAT_REG sizeof(unsigned long) +#else +#define GDB_SIZEOF_FLOAT_REG sizeof(u64) +#endif -void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs) +struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] = { - unsigned long *ptr = gdb_regs; - int reg; - - for (reg = 0; reg < 32; reg++) - UNPACK64(regs->gpr[reg], ptr); + { "r0", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[0]) }, + { "r1", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[1]) }, + { "r2", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[2]) }, + { "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]) }, + + { "f0", GDB_SIZEOF_FLOAT_REG, 0 }, + { "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) }, +}; -#ifdef CONFIG_FSL_BOOKE -#ifdef CONFIG_SPE - for (reg = 0; reg < 32; reg++) - UNPACK64(current->thread.evr[reg], ptr); +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 - ptr += 32; + /* 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 */ - ptr += 32 * 8 / sizeof(int); + /* fp registers not used by kernel, leave zero */ + return 0; #endif + } - UNPACK64(regs->nip, ptr); - UNPACK64(regs->msr, ptr); - UNPACK32(regs->ccr, ptr); - UNPACK64(regs->link, ptr); - UNPACK64(regs->ctr, ptr); - UNPACK32(regs->xer, ptr); - - BUG_ON((unsigned long)ptr > - (unsigned long)(((void *)gdb_regs) + NUMREGBYTES)); + return 0; } void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc) diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c index d81cfebb848..ec592caac4b 100644 --- a/arch/x86/kernel/kgdb.c +++ b/arch/x86/kernel/kgdb.c @@ -387,7 +387,7 @@ kgdb_set_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype) * disable hardware debugging while it is processing gdb packets or * handling exception. */ -void kgdb_disable_hw_debug(struct pt_regs *regs) +static void kgdb_disable_hw_debug(struct pt_regs *regs) { int i; int cpu = raw_smp_processor_id(); @@ -724,6 +724,7 @@ struct kgdb_arch arch_kgdb_ops = { .flags = KGDB_HW_BREAKPOINT, .set_hw_breakpoint = kgdb_set_hw_break, .remove_hw_breakpoint = kgdb_remove_hw_break, + .disable_hw_break = kgdb_disable_hw_debug, .remove_all_hw_break = kgdb_remove_all_hw_break, .correct_hw_break = kgdb_correct_hw_break, }; |