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user-offsets.c

#include <stdio.h>
#include <stddef.h>
#include <signal.h>
#include <sys/poll.h>
#include <sys/mman.h>
#include <sys/user.h>
#define __FRAME_OFFSETS
#include <asm/ptrace.h>
#include <asm/types.h>

#define DEFINE(sym, val) \
        asm volatile("\n->" #sym " %0 " #val : : "i" (val))

#define DEFINE_LONGS(sym, val) \
        asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))

#define OFFSET(sym, str, mem) \
      DEFINE(sym, offsetof(struct str, mem));

void foo(void)
{
      OFFSET(HOST_SC_RBX, sigcontext, rbx);
      OFFSET(HOST_SC_RCX, sigcontext, rcx);
      OFFSET(HOST_SC_RDX, sigcontext, rdx);
      OFFSET(HOST_SC_RSI, sigcontext, rsi);
      OFFSET(HOST_SC_RDI, sigcontext, rdi);
      OFFSET(HOST_SC_RBP, sigcontext, rbp);
      OFFSET(HOST_SC_RAX, sigcontext, rax);
      OFFSET(HOST_SC_R8, sigcontext, r8);
      OFFSET(HOST_SC_R9, sigcontext, r9);
      OFFSET(HOST_SC_R10, sigcontext, r10);
      OFFSET(HOST_SC_R11, sigcontext, r11);
      OFFSET(HOST_SC_R12, sigcontext, r12);
      OFFSET(HOST_SC_R13, sigcontext, r13);
      OFFSET(HOST_SC_R14, sigcontext, r14);
      OFFSET(HOST_SC_R15, sigcontext, r15);
      OFFSET(HOST_SC_IP, sigcontext, rip);
      OFFSET(HOST_SC_SP, sigcontext, rsp);
      OFFSET(HOST_SC_CR2, sigcontext, cr2);
      OFFSET(HOST_SC_ERR, sigcontext, err);
      OFFSET(HOST_SC_TRAPNO, sigcontext, trapno);
      OFFSET(HOST_SC_CS, sigcontext, cs);
      OFFSET(HOST_SC_FS, sigcontext, fs);
      OFFSET(HOST_SC_GS, sigcontext, gs);
      OFFSET(HOST_SC_EFLAGS, sigcontext, eflags);
      OFFSET(HOST_SC_SIGMASK, sigcontext, oldmask);
#if 0
      OFFSET(HOST_SC_ORIG_RAX, sigcontext, orig_rax);
      OFFSET(HOST_SC_DS, sigcontext, ds);
      OFFSET(HOST_SC_ES, sigcontext, es);
      OFFSET(HOST_SC_SS, sigcontext, ss);
#endif

      DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long));
      DEFINE(HOST_XFP_SIZE, 0);
      DEFINE_LONGS(HOST_RBX, RBX);
      DEFINE_LONGS(HOST_RCX, RCX);
      DEFINE_LONGS(HOST_RDI, RDI);
      DEFINE_LONGS(HOST_RSI, RSI);
      DEFINE_LONGS(HOST_RDX, RDX);
      DEFINE_LONGS(HOST_RBP, RBP);
      DEFINE_LONGS(HOST_RAX, RAX);
      DEFINE_LONGS(HOST_R8, R8);
      DEFINE_LONGS(HOST_R9, R9);
      DEFINE_LONGS(HOST_R10, R10);
      DEFINE_LONGS(HOST_R11, R11);
      DEFINE_LONGS(HOST_R12, R12);
      DEFINE_LONGS(HOST_R13, R13);
      DEFINE_LONGS(HOST_R14, R14);
      DEFINE_LONGS(HOST_R15, R15);
      DEFINE_LONGS(HOST_ORIG_RAX, ORIG_RAX);
      DEFINE_LONGS(HOST_CS, CS);
      DEFINE_LONGS(HOST_SS, SS);
      DEFINE_LONGS(HOST_EFLAGS, EFLAGS);
#if 0
      DEFINE_LONGS(HOST_FS, FS);
      DEFINE_LONGS(HOST_GS, GS);
      DEFINE_LONGS(HOST_DS, DS);
      DEFINE_LONGS(HOST_ES, ES);
#endif

      DEFINE_LONGS(HOST_IP, RIP);
      DEFINE_LONGS(HOST_SP, RSP);
      DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));

      /* XXX Duplicated between i386 and x86_64 */
      DEFINE(UM_POLLIN, POLLIN);
      DEFINE(UM_POLLPRI, POLLPRI);
      DEFINE(UM_POLLOUT, POLLOUT);

      DEFINE(UM_PROT_READ, PROT_READ);
      DEFINE(UM_PROT_WRITE, PROT_WRITE);
      DEFINE(UM_PROT_EXEC, PROT_EXEC);
}

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