diff options
| -rw-r--r-- | arch/m68k/kernel/ptrace.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c index 6342ff4d2073..4349b9c4dd68 100644 --- a/arch/m68k/kernel/ptrace.c +++ b/arch/m68k/kernel/ptrace.c @@ -19,6 +19,8 @@ #include <linux/ptrace.h> #include <linux/user.h> #include <linux/signal.h> +#include <linux/regset.h> +#include <linux/elf.h> #include <linux/uaccess.h> #include <asm/page.h> @@ -291,3 +293,59 @@ asmlinkage void syscall_trace_leave(void) ptrace_report_syscall_exit(task_pt_regs(current), 0); } #endif /* CONFIG_COLDFIRE */ + +#if defined(CONFIG_BINFMT_ELF_FDPIC) && defined(CONFIG_ELF_CORE) +/* + * Currently the only thing that needs to use regsets for m68k is the + * coredump support of the elf_fdpic loader. Implement the minimum + * definitions required for that. + */ +static int m68k_regset_get(struct task_struct *target, + const struct user_regset *regset, + struct membuf to) +{ + struct pt_regs *ptregs = task_pt_regs(target); + u32 uregs[ELF_NGREG]; + + ELF_CORE_COPY_REGS(uregs, ptregs); + return membuf_write(&to, uregs, sizeof(uregs)); +} + +enum m68k_regset { + REGSET_GPR, +#ifdef CONFIG_FPU + REGSET_FPU, +#endif +}; + +static const struct user_regset m68k_user_regsets[] = { + [REGSET_GPR] = { + .core_note_type = NT_PRSTATUS, + .n = ELF_NGREG, + .size = sizeof(u32), + .align = sizeof(u16), + .regset_get = m68k_regset_get, + }, +#ifdef CONFIG_FPU + [REGSET_FPU] = { + .core_note_type = NT_PRFPREG, + .n = sizeof(struct user_m68kfp_struct) / sizeof(u32), + .size = sizeof(u32), + .align = sizeof(u32), + } +#endif /* CONFIG_FPU */ +}; + +static const struct user_regset_view user_m68k_view = { + .name = "m68k", + .e_machine = EM_68K, + .ei_osabi = ELF_OSABI, + .regsets = m68k_user_regsets, + .n = ARRAY_SIZE(m68k_user_regsets) +}; + +const struct user_regset_view *task_user_regset_view(struct task_struct *task) +{ + return &user_m68k_view; +} +#endif /* CONFIG_BINFMT_ELF_FDPIC && CONFIG_ELF_CORE */ |