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Diffstat (limited to 'arch/mips/kernel/ptrace.c')
-rw-r--r--arch/mips/kernel/ptrace.c94
1 files changed, 42 insertions, 52 deletions
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index d9df543f7e2c..3f4c94c88124 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -31,6 +31,7 @@
#include <linux/seccomp.h>
#include <linux/ftrace.h>
+#include <asm/branch.h>
#include <asm/byteorder.h>
#include <asm/cpu.h>
#include <asm/cpu-info.h>
@@ -48,6 +49,12 @@
#define CREATE_TRACE_POINTS
#include <trace/events/syscalls.h>
+unsigned long exception_ip(struct pt_regs *regs)
+{
+ return exception_epc(regs);
+}
+EXPORT_SYMBOL(exception_ip);
+
/*
* Called by kernel/ptrace.c when detaching..
*
@@ -915,58 +922,60 @@ static const struct pt_regs_offset regoffset_table[] = {
*/
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;
+ 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[] = {
[REGSET_GPR] = {
- .core_note_type = NT_PRSTATUS,
+ USER_REGSET_NOTE_TYPE(PRSTATUS),
.n = ELF_NGREG,
.size = sizeof(unsigned int),
.align = sizeof(unsigned int),
- .regset_get = gpr32_get,
+ .regset_get = gpr32_get,
.set = gpr32_set,
},
[REGSET_DSP] = {
- .core_note_type = NT_MIPS_DSP,
+ USER_REGSET_NOTE_TYPE(MIPS_DSP),
.n = NUM_DSP_REGS + 1,
.size = sizeof(u32),
.align = sizeof(u32),
- .regset_get = dsp32_get,
+ .regset_get = dsp32_get,
.set = dsp32_set,
.active = dsp_active,
},
#ifdef CONFIG_MIPS_FP_SUPPORT
[REGSET_FPR] = {
- .core_note_type = NT_PRFPREG,
+ USER_REGSET_NOTE_TYPE(PRFPREG),
.n = ELF_NFPREG,
.size = sizeof(elf_fpreg_t),
.align = sizeof(elf_fpreg_t),
- .regset_get = fpr_get,
+ .regset_get = fpr_get,
.set = fpr_set,
},
[REGSET_FP_MODE] = {
- .core_note_type = NT_MIPS_FP_MODE,
+ USER_REGSET_NOTE_TYPE(MIPS_FP_MODE),
.n = 1,
.size = sizeof(int),
.align = sizeof(int),
- .regset_get = fp_mode_get,
+ .regset_get = fp_mode_get,
.set = fp_mode_set,
},
#endif
#ifdef CONFIG_CPU_HAS_MSA
[REGSET_MSA] = {
- .core_note_type = NT_MIPS_MSA,
+ USER_REGSET_NOTE_TYPE(MIPS_MSA),
.n = NUM_FPU_REGS + 1,
.size = 16,
.align = 16,
- .regset_get = msa_get,
+ .regset_get = msa_get,
.set = msa_set,
},
#endif
@@ -986,47 +995,47 @@ static const struct user_regset_view user_mips_view = {
static const struct user_regset mips64_regsets[] = {
[REGSET_GPR] = {
- .core_note_type = NT_PRSTATUS,
+ USER_REGSET_NOTE_TYPE(PRSTATUS),
.n = ELF_NGREG,
.size = sizeof(unsigned long),
.align = sizeof(unsigned long),
- .regset_get = gpr64_get,
+ .regset_get = gpr64_get,
.set = gpr64_set,
},
[REGSET_DSP] = {
- .core_note_type = NT_MIPS_DSP,
+ USER_REGSET_NOTE_TYPE(MIPS_DSP),
.n = NUM_DSP_REGS + 1,
.size = sizeof(u64),
.align = sizeof(u64),
- .regset_get = dsp64_get,
+ .regset_get = dsp64_get,
.set = dsp64_set,
.active = dsp_active,
},
#ifdef CONFIG_MIPS_FP_SUPPORT
[REGSET_FP_MODE] = {
- .core_note_type = NT_MIPS_FP_MODE,
+ USER_REGSET_NOTE_TYPE(MIPS_FP_MODE),
.n = 1,
.size = sizeof(int),
.align = sizeof(int),
- .regset_get = fp_mode_get,
+ .regset_get = fp_mode_get,
.set = fp_mode_set,
},
[REGSET_FPR] = {
- .core_note_type = NT_PRFPREG,
+ USER_REGSET_NOTE_TYPE(PRFPREG),
.n = ELF_NFPREG,
.size = sizeof(elf_fpreg_t),
.align = sizeof(elf_fpreg_t),
- .regset_get = fpr_get,
+ .regset_get = fpr_get,
.set = fpr_set,
},
#endif
#ifdef CONFIG_CPU_HAS_MSA
[REGSET_MSA] = {
- .core_note_type = NT_MIPS_MSA,
+ USER_REGSET_NOTE_TYPE(MIPS_MSA),
.n = NUM_FPU_REGS + 1,
.size = 16,
.align = 16,
- .regset_get = msa_get,
+ .regset_get = msa_get,
.set = msa_set,
},
#endif
@@ -1310,51 +1319,32 @@ long arch_ptrace(struct task_struct *child, long request,
* Notification of system call entry/exit
* - triggered by current->work.syscall_trace
*/
-asmlinkage long syscall_trace_enter(struct pt_regs *regs, long syscall)
+asmlinkage long syscall_trace_enter(struct pt_regs *regs)
{
user_exit();
- current_thread_info()->syscall = syscall;
-
if (test_thread_flag(TIF_SYSCALL_TRACE)) {
if (ptrace_report_syscall_entry(regs))
return -1;
- syscall = current_thread_info()->syscall;
}
-#ifdef CONFIG_SECCOMP
- if (unlikely(test_thread_flag(TIF_SECCOMP))) {
- int ret, i;
- struct seccomp_data sd;
- unsigned long args[6];
-
- sd.nr = syscall;
- sd.arch = syscall_get_arch(current);
- syscall_get_arguments(current, regs, args);
- for (i = 0; i < 6; i++)
- sd.args[i] = args[i];
- sd.instruction_pointer = KSTK_EIP(current);
-
- ret = __secure_computing(&sd);
- if (ret == -1)
- return ret;
- syscall = current_thread_info()->syscall;
- }
-#endif
+ if (secure_computing())
+ return -1;
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_enter(regs, regs->regs[2]);
- audit_syscall_entry(syscall, regs->regs[4], regs->regs[5],
+ audit_syscall_entry(current_thread_info()->syscall,
+ regs->regs[4], regs->regs[5],
regs->regs[6], regs->regs[7]);
/*
* Negative syscall numbers are mistaken for rejected syscalls, but
* won't have had the return value set appropriately, so we do so now.
*/
- if (syscall < 0)
+ if (current_thread_info()->syscall < 0)
syscall_set_return_value(current, regs, -ENOSYS, 0);
- return syscall;
+ return current_thread_info()->syscall;
}
/*
@@ -1363,7 +1353,7 @@ asmlinkage long syscall_trace_enter(struct pt_regs *regs, long syscall)
*/
asmlinkage void syscall_trace_leave(struct pt_regs *regs)
{
- /*
+ /*
* We may come here right after calling schedule_user()
* or do_notify_resume(), in which case we can be in RCU
* user mode.
generated by cgit (git 2.34.1) at 2025-12-24 22:07:53 +0000