| /* |
| * On i386, pt_regs and user_regs_struct are the same, |
| * but on 64 bit x86, user_regs_struct has six more fields: |
| * fs_base, gs_base, ds, es, fs, gs. |
| * PTRACE_GETREGS fills them too, so struct pt_regs would overflow. |
| */ |
| struct i386_user_regs_struct { |
| uint32_t ebx; |
| uint32_t ecx; |
| uint32_t edx; |
| uint32_t esi; |
| uint32_t edi; |
| uint32_t ebp; |
| uint32_t eax; |
| uint32_t xds; |
| uint32_t xes; |
| uint32_t xfs; |
| uint32_t xgs; |
| uint32_t orig_eax; |
| uint32_t eip; |
| uint32_t xcs; |
| uint32_t eflags; |
| uint32_t esp; |
| uint32_t xss; |
| }; |
| static union { |
| struct user_regs_struct x86_64_r; |
| struct i386_user_regs_struct i386_r; |
| } x86_regs_union; |
| #define x86_64_regs x86_regs_union.x86_64_r |
| #define i386_regs x86_regs_union.i386_r |
| |
| uint32_t *const i386_esp_ptr = &i386_regs.esp; |
| uint64_t *const x86_64_rsp_ptr = (uint64_t *) &x86_64_regs.rsp; |
| static struct iovec x86_io = { |
| .iov_base = &x86_regs_union |
| }; |
| |
| #define ARCH_REGS_FOR_GETREGSET x86_regs_union |
| #define ARCH_IOVEC_FOR_GETREGSET x86_io |
| #define ARCH_PC_REG (x86_io.iov_len == sizeof(i386_regs) ? i386_regs.eip : x86_64_regs.rip) |
