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MIPS: Add uprobes support.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle
2015-07-29 22:44:53 +02:00
parent e3b28831c1
commit 40e084a506
11 changed files with 597 additions and 2 deletions
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88
arch/mips/kernel/ptrace.c
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@@ -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[] = {