diff options
| -rw-r--r-- | arch/x86/kernel/ptrace.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c index ef349ff..196cc27 100644 --- a/arch/x86/kernel/ptrace.c +++ b/arch/x86/kernel/ptrace.c @@ -15,6 +15,7 @@ #include <linux/ptrace.h> #include <linux/regset.h> #include <linux/user.h> +#include <linux/elf.h> #include <linux/security.h> #include <linux/audit.h> #include <linux/seccomp.h> @@ -32,6 +33,14 @@ #include <asm/proto.h> #include <asm/ds.h> +#include "tls.h" + +enum x86_regset { + REGSET_GENERAL, + REGSET_FP, + REGSET_XFP, + REGSET_TLS, +}; /* * does not yet catch signals sent when the child dies. @@ -1335,6 +1344,84 @@ asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data) #endif /* CONFIG_IA32_EMULATION */ +#ifdef CONFIG_X86_64 + +static const struct user_regset x86_64_regsets[] = { + [REGSET_GENERAL] = { + .core_note_type = NT_PRSTATUS, + .n = sizeof(struct user_regs_struct) / sizeof(long), + .size = sizeof(long), .align = sizeof(long), + .get = genregs_get, .set = genregs_set + }, + [REGSET_FP] = { + .core_note_type = NT_PRFPREG, + .n = sizeof(struct user_i387_struct) / sizeof(long), + .size = sizeof(long), .align = sizeof(long), + .active = xfpregs_active, .get = xfpregs_get, .set = xfpregs_set + }, +}; + +static const struct user_regset_view user_x86_64_view = { + .name = "x86_64", .e_machine = EM_X86_64, + .regsets = x86_64_regsets, .n = ARRAY_SIZE(x86_64_regsets) +}; + +#else /* CONFIG_X86_32 */ + +#define user_regs_struct32 user_regs_struct +#define genregs32_get genregs_get +#define genregs32_set genregs_set + +#endif /* CONFIG_X86_64 */ + +#if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION +static const struct user_regset x86_32_regsets[] = { + [REGSET_GENERAL] = { + .core_note_type = NT_PRSTATUS, + .n = sizeof(struct user_regs_struct32) / sizeof(u32), + .size = sizeof(u32), .align = sizeof(u32), + .get = genregs32_get, .set = genregs32_set + }, + [REGSET_FP] = { + .core_note_type = NT_PRFPREG, + .n = sizeof(struct user_i387_struct) / sizeof(u32), + .size = sizeof(u32), .align = sizeof(u32), + .active = fpregs_active, .get = fpregs_get, .set = fpregs_set + }, + [REGSET_XFP] = { + .core_note_type = NT_PRXFPREG, + .n = sizeof(struct user_i387_struct) / sizeof(u32), + .size = sizeof(u32), .align = sizeof(u32), + .active = xfpregs_active, .get = xfpregs_get, .set = xfpregs_set + }, + [REGSET_TLS] = { + .n = GDT_ENTRY_TLS_ENTRIES, .bias = GDT_ENTRY_TLS_MIN, + .size = sizeof(struct user_desc), + .align = sizeof(struct user_desc), + .active = regset_tls_active, + .get = regset_tls_get, .set = regset_tls_set + }, +}; + +static const struct user_regset_view user_x86_32_view = { + .name = "i386", .e_machine = EM_386, + .regsets = x86_32_regsets, .n = ARRAY_SIZE(x86_32_regsets) +}; +#endif + +const struct user_regset_view *task_user_regset_view(struct task_struct *task) +{ +#ifdef CONFIG_IA32_EMULATION + if (test_tsk_thread_flag(task, TIF_IA32)) +#endif +#if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION + return &user_x86_32_view; +#endif +#ifdef CONFIG_X86_64 + return &user_x86_64_view; +#endif +} + #ifdef CONFIG_X86_32 void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code) |
