arch/x86/um/user-offsets.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <stdio.h>
   3 #include <stddef.h>
   4 #include <signal.h>
   5 #include <sys/poll.h>
   6 #include <sys/mman.h>
   7 #include <sys/user.h>
   8 #define __FRAME_OFFSETS
   9 #include <linux/ptrace.h>
  10 #include <asm/types.h>
  11
  12 #ifdef __i386__
  13 #define __SYSCALL_I386(nr, sym, qual) [nr] = 1,
  14 static char syscalls[] = {
  15 #include <asm/syscalls_32.h>
  16 };
  17 #else
  18 #define __SYSCALL_64(nr, sym, qual) [nr] = 1,
  19 static char syscalls[] = {
  20 #include <asm/syscalls_64.h>
  21 };
  22 #endif
  23
  24 #define DEFINE(sym, val) \
  25         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  26
  27 #define DEFINE_LONGS(sym, val) \
  28         asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))
  29
  30 void foo(void)
  31 {
  32 #ifdef __i386__
  33         DEFINE_LONGS(HOST_FP_SIZE, sizeof(struct user_fpregs_struct));
  34         DEFINE_LONGS(HOST_FPX_SIZE, sizeof(struct user_fpxregs_struct));
  35
  36         DEFINE(HOST_IP, EIP);
  37         DEFINE(HOST_SP, UESP);
  38         DEFINE(HOST_EFLAGS, EFL);
  39         DEFINE(HOST_AX, EAX);
  40         DEFINE(HOST_BX, EBX);
  41         DEFINE(HOST_CX, ECX);
  42         DEFINE(HOST_DX, EDX);
  43         DEFINE(HOST_SI, ESI);
  44         DEFINE(HOST_DI, EDI);
  45         DEFINE(HOST_BP, EBP);
  46         DEFINE(HOST_CS, CS);
  47         DEFINE(HOST_SS, SS);
  48         DEFINE(HOST_DS, DS);
  49         DEFINE(HOST_FS, FS);
  50         DEFINE(HOST_ES, ES);
  51         DEFINE(HOST_GS, GS);
  52         DEFINE(HOST_ORIG_AX, ORIG_EAX);
  53 #else
  54 #ifdef FP_XSTATE_MAGIC1
  55         DEFINE_LONGS(HOST_FP_SIZE, 2696);
  56 #else
  57         DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long));
  58 #endif
  59         DEFINE_LONGS(HOST_BX, RBX);
  60         DEFINE_LONGS(HOST_CX, RCX);
  61         DEFINE_LONGS(HOST_DI, RDI);
  62         DEFINE_LONGS(HOST_SI, RSI);
  63         DEFINE_LONGS(HOST_DX, RDX);
  64         DEFINE_LONGS(HOST_BP, RBP);
  65         DEFINE_LONGS(HOST_AX, RAX);
  66         DEFINE_LONGS(HOST_R8, R8);
  67         DEFINE_LONGS(HOST_R9, R9);
  68         DEFINE_LONGS(HOST_R10, R10);
  69         DEFINE_LONGS(HOST_R11, R11);
  70         DEFINE_LONGS(HOST_R12, R12);
  71         DEFINE_LONGS(HOST_R13, R13);
  72         DEFINE_LONGS(HOST_R14, R14);
  73         DEFINE_LONGS(HOST_R15, R15);
  74         DEFINE_LONGS(HOST_ORIG_AX, ORIG_RAX);
  75         DEFINE_LONGS(HOST_CS, CS);
  76         DEFINE_LONGS(HOST_SS, SS);
  77         DEFINE_LONGS(HOST_EFLAGS, EFLAGS);
  78 #if 0
  79         DEFINE_LONGS(HOST_FS, FS);
  80         DEFINE_LONGS(HOST_GS, GS);
  81         DEFINE_LONGS(HOST_DS, DS);
  82         DEFINE_LONGS(HOST_ES, ES);
  83 #endif
  84
  85         DEFINE_LONGS(HOST_IP, RIP);
  86         DEFINE_LONGS(HOST_SP, RSP);
  87 #endif
  88
  89         DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));
  90         DEFINE(UM_POLLIN, POLLIN);
  91         DEFINE(UM_POLLPRI, POLLPRI);
  92         DEFINE(UM_POLLOUT, POLLOUT);
  93
  94         DEFINE(UM_PROT_READ, PROT_READ);
  95         DEFINE(UM_PROT_WRITE, PROT_WRITE);
  96         DEFINE(UM_PROT_EXEC, PROT_EXEC);
  97
  98         DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
  99         DEFINE(NR_syscalls, sizeof(syscalls));
 100 }