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
Jason Wessel
parent
4dacd5c073
commit
ff10b88b5a
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@ -31,6 +31,7 @@ static inline void arch_kgdb_breakpoint(void)
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asm(".long 0x7d821008"); /* twge r2, r2 */
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}
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#define CACHE_FLUSH_IS_SAFE 1
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#define DBG_MAX_REG_NUM 70
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/* The number bytes of registers we have to save depends on a few
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* things. For 64bit we default to not including vector registers and
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@ -194,40 +194,6 @@ static int kgdb_dabr_match(struct pt_regs *regs)
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ptr = (unsigned long *)ptr32; \
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} while (0)
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void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
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{
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unsigned long *ptr = gdb_regs;
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int reg;
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memset(gdb_regs, 0, NUMREGBYTES);
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for (reg = 0; reg < 32; reg++)
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PACK64(ptr, regs->gpr[reg]);
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#ifdef CONFIG_FSL_BOOKE
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#ifdef CONFIG_SPE
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for (reg = 0; reg < 32; reg++)
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PACK64(ptr, current->thread.evr[reg]);
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#else
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ptr += 32;
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#endif
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#else
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/* fp registers not used by kernel, leave zero */
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ptr += 32 * 8 / sizeof(long);
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#endif
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PACK64(ptr, regs->nip);
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PACK64(ptr, regs->msr);
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PACK32(ptr, regs->ccr);
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PACK64(ptr, regs->link);
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PACK64(ptr, regs->ctr);
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PACK32(ptr, regs->xer);
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BUG_ON((unsigned long)ptr >
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(unsigned long)(((void *)gdb_regs) + NUMREGBYTES));
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}
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void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
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{
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struct pt_regs *regs = (struct pt_regs *)(p->thread.ksp +
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@ -271,44 +237,140 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
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(unsigned long)(((void *)gdb_regs) + NUMREGBYTES));
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}
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#define UNPACK64(dest, ptr) do { dest = *(ptr++); } while (0)
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#define UNPACK32(dest, ptr) do { \
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u32 *ptr32; \
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ptr32 = (u32 *)ptr; \
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dest = *(ptr32++); \
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ptr = (unsigned long *)ptr32; \
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} while (0)
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void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
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{
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unsigned long *ptr = gdb_regs;
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int reg;
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for (reg = 0; reg < 32; reg++)
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UNPACK64(regs->gpr[reg], ptr);
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#define GDB_SIZEOF_REG sizeof(unsigned long)
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#define GDB_SIZEOF_REG_U32 sizeof(u32)
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#ifdef CONFIG_FSL_BOOKE
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#ifdef CONFIG_SPE
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for (reg = 0; reg < 32; reg++)
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UNPACK64(current->thread.evr[reg], ptr);
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#define GDB_SIZEOF_FLOAT_REG sizeof(unsigned long)
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#else
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ptr += 32;
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#endif
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#else
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/* fp registers not used by kernel, leave zero */
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ptr += 32 * 8 / sizeof(int);
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#define GDB_SIZEOF_FLOAT_REG sizeof(u64)
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#endif
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UNPACK64(regs->nip, ptr);
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UNPACK64(regs->msr, ptr);
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UNPACK32(regs->ccr, ptr);
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UNPACK64(regs->link, ptr);
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UNPACK64(regs->ctr, ptr);
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UNPACK32(regs->xer, ptr);
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struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] =
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{
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{ "r0", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[0]) },
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{ "r1", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[1]) },
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{ "r2", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[2]) },
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{ "r3", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[3]) },
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{ "r4", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[4]) },
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{ "r5", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[5]) },
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{ "r6", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[6]) },
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{ "r7", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[7]) },
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{ "r8", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[8]) },
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{ "r9", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[9]) },
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{ "r10", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[10]) },
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{ "r11", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[11]) },
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{ "r12", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[12]) },
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{ "r13", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[13]) },
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{ "r14", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[14]) },
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{ "r15", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[15]) },
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{ "r16", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[16]) },
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{ "r17", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[17]) },
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{ "r18", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[18]) },
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{ "r19", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[19]) },
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{ "r20", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[20]) },
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{ "r21", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[21]) },
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{ "r22", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[22]) },
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{ "r23", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[23]) },
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{ "r24", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[24]) },
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{ "r25", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[25]) },
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{ "r26", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[26]) },
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{ "r27", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[27]) },
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{ "r28", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[28]) },
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{ "r29", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[29]) },
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{ "r30", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[30]) },
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{ "r31", GDB_SIZEOF_REG, offsetof(struct pt_regs, gpr[31]) },
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BUG_ON((unsigned long)ptr >
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(unsigned long)(((void *)gdb_regs) + NUMREGBYTES));
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{ "f0", GDB_SIZEOF_FLOAT_REG, 0 },
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{ "f1", GDB_SIZEOF_FLOAT_REG, 1 },
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{ "f2", GDB_SIZEOF_FLOAT_REG, 2 },
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{ "f3", GDB_SIZEOF_FLOAT_REG, 3 },
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{ "f4", GDB_SIZEOF_FLOAT_REG, 4 },
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{ "f5", GDB_SIZEOF_FLOAT_REG, 5 },
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{ "f6", GDB_SIZEOF_FLOAT_REG, 6 },
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{ "f7", GDB_SIZEOF_FLOAT_REG, 7 },
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{ "f8", GDB_SIZEOF_FLOAT_REG, 8 },
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{ "f9", GDB_SIZEOF_FLOAT_REG, 9 },
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{ "f10", GDB_SIZEOF_FLOAT_REG, 10 },
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{ "f11", GDB_SIZEOF_FLOAT_REG, 11 },
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{ "f12", GDB_SIZEOF_FLOAT_REG, 12 },
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{ "f13", GDB_SIZEOF_FLOAT_REG, 13 },
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{ "f14", GDB_SIZEOF_FLOAT_REG, 14 },
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{ "f15", GDB_SIZEOF_FLOAT_REG, 15 },
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{ "f16", GDB_SIZEOF_FLOAT_REG, 16 },
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{ "f17", GDB_SIZEOF_FLOAT_REG, 17 },
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{ "f18", GDB_SIZEOF_FLOAT_REG, 18 },
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{ "f19", GDB_SIZEOF_FLOAT_REG, 19 },
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{ "f20", GDB_SIZEOF_FLOAT_REG, 20 },
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{ "f21", GDB_SIZEOF_FLOAT_REG, 21 },
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{ "f22", GDB_SIZEOF_FLOAT_REG, 22 },
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{ "f23", GDB_SIZEOF_FLOAT_REG, 23 },
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{ "f24", GDB_SIZEOF_FLOAT_REG, 24 },
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{ "f25", GDB_SIZEOF_FLOAT_REG, 25 },
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{ "f26", GDB_SIZEOF_FLOAT_REG, 26 },
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{ "f27", GDB_SIZEOF_FLOAT_REG, 27 },
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{ "f28", GDB_SIZEOF_FLOAT_REG, 28 },
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{ "f29", GDB_SIZEOF_FLOAT_REG, 29 },
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{ "f30", GDB_SIZEOF_FLOAT_REG, 30 },
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{ "f31", GDB_SIZEOF_FLOAT_REG, 31 },
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{ "pc", GDB_SIZEOF_REG, offsetof(struct pt_regs, nip) },
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{ "msr", GDB_SIZEOF_REG, offsetof(struct pt_regs, msr) },
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{ "cr", GDB_SIZEOF_REG_U32, offsetof(struct pt_regs, ccr) },
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{ "lr", GDB_SIZEOF_REG, offsetof(struct pt_regs, link) },
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{ "ctr", GDB_SIZEOF_REG_U32, offsetof(struct pt_regs, ctr) },
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{ "xer", GDB_SIZEOF_REG, offsetof(struct pt_regs, xer) },
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};
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char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)
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{
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if (regno >= DBG_MAX_REG_NUM || regno < 0)
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return NULL;
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if (regno < 32 || regno >= 64)
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/* First 0 -> 31 gpr registers*/
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/* pc, msr, ls... registers 64 -> 69 */
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memcpy(mem, (void *)regs + dbg_reg_def[regno].offset,
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dbg_reg_def[regno].size);
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if (regno >= 32 && regno < 64) {
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/* FP registers 32 -> 63 */
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#if defined(CONFIG_FSL_BOOKE) && defined(CONFIG_SPE)
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if (current)
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memcpy(mem, current->thread.evr[regno-32],
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dbg_reg_def[regno].size);
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#else
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/* fp registers not used by kernel, leave zero */
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memset(mem, 0, dbg_reg_def[regno].size);
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#endif
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}
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return dbg_reg_def[regno].name;
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}
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int dbg_set_reg(int regno, void *mem, struct pt_regs *regs)
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{
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if (regno >= DBG_MAX_REG_NUM || regno < 0)
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return -EINVAL;
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if (regno < 32 || regno >= 64)
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/* First 0 -> 31 gpr registers*/
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/* pc, msr, ls... registers 64 -> 69 */
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memcpy((void *)regs + dbg_reg_def[regno].offset, mem,
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dbg_reg_def[regno].size);
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if (regno >= 32 && regno < 64) {
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/* FP registers 32 -> 63 */
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#if defined(CONFIG_FSL_BOOKE) && defined(CONFIG_SPE)
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memcpy(current->thread.evr[regno-32], mem,
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dbg_reg_def[regno].size);
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#else
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/* fp registers not used by kernel, leave zero */
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return 0;
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#endif
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}
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return 0;
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}
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void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc)
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