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author | Ralf Baechle <ralf@linux-mips.org> | 2015-07-29 20:44:53 (GMT) |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2015-09-03 10:08:05 (GMT) |
commit | 40e084a506eba78310cd5e8ab700fd1226c6130a (patch) | |
tree | a7d19eea2c8a72c78205f2403be2ea3cde24ce63 /arch/mips/kernel/ptrace.c | |
parent | e3b28831c18c6c95c51b6bb717fa116d2b658ba9 (diff) | |
download | linux-40e084a506eba78310cd5e8ab700fd1226c6130a.tar.xz |
MIPS: Add uprobes support.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/ptrace.c')
-rw-r--r-- | arch/mips/kernel/ptrace.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index e933a30..4f0ac78 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -25,6 +25,7 @@ #include <linux/regset.h> #include <linux/smp.h> #include <linux/security.h> +#include <linux/stddef.h> #include <linux/tracehook.h> #include <linux/audit.h> #include <linux/seccomp.h> @@ -490,6 +491,93 @@ enum mips_regset { REGSET_FPR, }; +struct pt_regs_offset { + const char *name; + int offset; +}; + +#define REG_OFFSET_NAME(reg, r) { \ + .name = #reg, \ + .offset = offsetof(struct pt_regs, r) \ +} + +#define REG_OFFSET_END { \ + .name = NULL, \ + .offset = 0 \ +} + +static const struct pt_regs_offset regoffset_table[] = { + REG_OFFSET_NAME(r0, regs[0]), + REG_OFFSET_NAME(r1, regs[1]), + REG_OFFSET_NAME(r2, regs[2]), + REG_OFFSET_NAME(r3, regs[3]), + REG_OFFSET_NAME(r4, regs[4]), + REG_OFFSET_NAME(r5, regs[5]), + REG_OFFSET_NAME(r6, regs[6]), + REG_OFFSET_NAME(r7, regs[7]), + REG_OFFSET_NAME(r8, regs[8]), + REG_OFFSET_NAME(r9, regs[9]), + REG_OFFSET_NAME(r10, regs[10]), + REG_OFFSET_NAME(r11, regs[11]), + REG_OFFSET_NAME(r12, regs[12]), + REG_OFFSET_NAME(r13, regs[13]), + REG_OFFSET_NAME(r14, regs[14]), + REG_OFFSET_NAME(r15, regs[15]), + REG_OFFSET_NAME(r16, regs[16]), + REG_OFFSET_NAME(r17, regs[17]), + REG_OFFSET_NAME(r18, regs[18]), + REG_OFFSET_NAME(r19, regs[19]), + REG_OFFSET_NAME(r20, regs[20]), + REG_OFFSET_NAME(r21, regs[21]), + REG_OFFSET_NAME(r22, regs[22]), + REG_OFFSET_NAME(r23, regs[23]), + REG_OFFSET_NAME(r24, regs[24]), + REG_OFFSET_NAME(r25, regs[25]), + REG_OFFSET_NAME(r26, regs[26]), + REG_OFFSET_NAME(r27, regs[27]), + REG_OFFSET_NAME(r28, regs[28]), + REG_OFFSET_NAME(r29, regs[29]), + REG_OFFSET_NAME(r30, regs[30]), + REG_OFFSET_NAME(r31, regs[31]), + REG_OFFSET_NAME(c0_status, cp0_status), + REG_OFFSET_NAME(hi, hi), + REG_OFFSET_NAME(lo, lo), +#ifdef CONFIG_CPU_HAS_SMARTMIPS + REG_OFFSET_NAME(acx, acx), +#endif + REG_OFFSET_NAME(c0_badvaddr, cp0_badvaddr), + REG_OFFSET_NAME(c0_cause, cp0_cause), + REG_OFFSET_NAME(c0_epc, cp0_epc), +#ifdef CONFIG_MIPS_MT_SMTC + REG_OFFSET_NAME(c0_tcstatus, cp0_tcstatus), +#endif +#ifdef CONFIG_CPU_CAVIUM_OCTEON + REG_OFFSET_NAME(mpl0, mpl[0]), + REG_OFFSET_NAME(mpl1, mpl[1]), + REG_OFFSET_NAME(mpl2, mpl[2]), + REG_OFFSET_NAME(mtp0, mtp[0]), + REG_OFFSET_NAME(mtp1, mtp[1]), + REG_OFFSET_NAME(mtp2, mtp[2]), +#endif + REG_OFFSET_END, +}; + +/** + * regs_query_register_offset() - query register offset from its name + * @name: the name of a register + * + * regs_query_register_offset() returns the offset of a register in struct + * pt_regs from its name. If the name is invalid, this returns -EINVAL; + */ +int regs_query_register_offset(const char *name) +{ + const struct pt_regs_offset *roff; + for (roff = regoffset_table; roff->name != NULL; roff++) + if (!strcmp(roff->name, name)) + return roff->offset; + return -EINVAL; +} + #if defined(CONFIG_32BIT) || defined(CONFIG_MIPS32_O32) static const struct user_regset mips_regsets[] = { |