arch/um/sys-x86_64/user-offsets.c

   1 #include <stdio.h>
   2 #include <stddef.h>
   3 #include <signal.h>
   4 #define __FRAME_OFFSETS
   5 #include <asm/ptrace.h>
   6 #include <asm/types.h>
   7 /* For some reason, x86_64 defines u64 and u32 only in <pci/types.h>, which I
   8  * refuse to include here, even though they're used throughout the headers.
   9  * These are used in asm/user.h, and that include can't be avoided because of
  10  * the sizeof(struct user_regs_struct) below.
  11  */
  12 typedef __u64 u64;
  13 typedef __u32 u32;
  14 #include <asm/user.h>
  15
  16 #define DEFINE(sym, val) \
  17         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  18
  19 #define DEFINE_LONGS(sym, val) \
  20         asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))
  21
  22 #define OFFSET(sym, str, mem) \
  23         DEFINE(sym, offsetof(struct str, mem));
  24
  25 void foo(void)
  26 {
  27         OFFSET(HOST_SC_RBX, sigcontext, rbx);
  28         OFFSET(HOST_SC_RCX, sigcontext, rcx);
  29         OFFSET(HOST_SC_RDX, sigcontext, rdx);
  30         OFFSET(HOST_SC_RSI, sigcontext, rsi);
  31         OFFSET(HOST_SC_RDI, sigcontext, rdi);
  32         OFFSET(HOST_SC_RBP, sigcontext, rbp);
  33         OFFSET(HOST_SC_RAX, sigcontext, rax);
  34         OFFSET(HOST_SC_R8, sigcontext, r8);
  35         OFFSET(HOST_SC_R9, sigcontext, r9);
  36         OFFSET(HOST_SC_R10, sigcontext, r10);
  37         OFFSET(HOST_SC_R11, sigcontext, r11);
  38         OFFSET(HOST_SC_R12, sigcontext, r12);
  39         OFFSET(HOST_SC_R13, sigcontext, r13);
  40         OFFSET(HOST_SC_R14, sigcontext, r14);
  41         OFFSET(HOST_SC_R15, sigcontext, r15);
  42         OFFSET(HOST_SC_IP, sigcontext, rip);
  43         OFFSET(HOST_SC_SP, sigcontext, rsp);
  44         OFFSET(HOST_SC_CR2, sigcontext, cr2);
  45         OFFSET(HOST_SC_ERR, sigcontext, err);
  46         OFFSET(HOST_SC_TRAPNO, sigcontext, trapno);
  47         OFFSET(HOST_SC_CS, sigcontext, cs);
  48         OFFSET(HOST_SC_FS, sigcontext, fs);
  49         OFFSET(HOST_SC_GS, sigcontext, gs);
  50         OFFSET(HOST_SC_EFLAGS, sigcontext, eflags);
  51         OFFSET(HOST_SC_SIGMASK, sigcontext, oldmask);
  52 #if 0
  53         OFFSET(HOST_SC_ORIG_RAX, sigcontext, orig_rax);
  54         OFFSET(HOST_SC_DS, sigcontext, ds);
  55         OFFSET(HOST_SC_ES, sigcontext, es);
  56         OFFSET(HOST_SC_SS, sigcontext, ss);
  57 #endif
  58
  59         DEFINE_LONGS(HOST_FRAME_SIZE, FRAME_SIZE);
  60         DEFINE(HOST_FP_SIZE, 0);
  61         DEFINE(HOST_XFP_SIZE, 0);
  62         DEFINE_LONGS(HOST_RBX, RBX);
  63         DEFINE_LONGS(HOST_RCX, RCX);
  64         DEFINE_LONGS(HOST_RDI, RDI);
  65         DEFINE_LONGS(HOST_RSI, RSI);
  66         DEFINE_LONGS(HOST_RDX, RDX);
  67         DEFINE_LONGS(HOST_RBP, RBP);
  68         DEFINE_LONGS(HOST_RAX, RAX);
  69         DEFINE_LONGS(HOST_R8, R8);
  70         DEFINE_LONGS(HOST_R9, R9);
  71         DEFINE_LONGS(HOST_R10, R10);
  72         DEFINE_LONGS(HOST_R11, R11);
  73         DEFINE_LONGS(HOST_R12, R12);
  74         DEFINE_LONGS(HOST_R13, R13);
  75         DEFINE_LONGS(HOST_R14, R14);
  76         DEFINE_LONGS(HOST_R15, R15);
  77         DEFINE_LONGS(HOST_ORIG_RAX, ORIG_RAX);
  78         DEFINE_LONGS(HOST_CS, CS);
  79         DEFINE_LONGS(HOST_SS, SS);
  80         DEFINE_LONGS(HOST_EFLAGS, EFLAGS);
  81 #if 0
  82         DEFINE_LONGS(HOST_FS, FS);
  83         DEFINE_LONGS(HOST_GS, GS);
  84         DEFINE_LONGS(HOST_DS, DS);
  85         DEFINE_LONGS(HOST_ES, ES);
  86 #endif
  87
  88         DEFINE_LONGS(HOST_IP, RIP);
  89         DEFINE_LONGS(HOST_SP, RSP);
  90         DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));
  91 }