Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 #include <stdio.h>
  2 #include <stddef.h>
  3 #include <signal.h>
  4 #include <sys/poll.h>
  5 #include <sys/user.h>
  6 #include <sys/mman.h>
  7 #include <asm/ptrace.h>
  8 
  9 #define DEFINE(sym, val) \
 10         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
 11 
 12 #define DEFINE_LONGS(sym, val) \
 13         asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))
 14 
 15 #define OFFSET(sym, str, mem) \
 16         DEFINE(sym, offsetof(struct str, mem));
 17 
 18 void foo(void)
 19 {
 20         OFFSET(HOST_SC_TRAPNO, sigcontext, trapno);
 21         OFFSET(HOST_SC_ERR, sigcontext, err);
 22         OFFSET(HOST_SC_CR2, sigcontext, cr2);
 23 
 24         DEFINE_LONGS(HOST_FP_SIZE, sizeof(struct user_fpregs_struct));
 25         DEFINE_LONGS(HOST_FPX_SIZE, sizeof(struct user_fpxregs_struct));
 26 
 27         DEFINE(HOST_IP, EIP);
 28         DEFINE(HOST_SP, UESP);
 29         DEFINE(HOST_EFLAGS, EFL);
 30         DEFINE(HOST_EAX, EAX);
 31         DEFINE(HOST_EBX, EBX);
 32         DEFINE(HOST_ECX, ECX);
 33         DEFINE(HOST_EDX, EDX);
 34         DEFINE(HOST_ESI, ESI);
 35         DEFINE(HOST_EDI, EDI);
 36         DEFINE(HOST_EBP, EBP);
 37         DEFINE(HOST_CS, CS);
 38         DEFINE(HOST_SS, SS);
 39         DEFINE(HOST_DS, DS);
 40         DEFINE(HOST_FS, FS);
 41         DEFINE(HOST_ES, ES);
 42         DEFINE(HOST_GS, GS);
 43         DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));
 44 
 45         /* XXX Duplicated between i386 and x86_64 */
 46         DEFINE(UM_POLLIN, POLLIN);
 47         DEFINE(UM_POLLPRI, POLLPRI);
 48         DEFINE(UM_POLLOUT, POLLOUT);
 49 
 50         DEFINE(UM_PROT_READ, PROT_READ);
 51         DEFINE(UM_PROT_WRITE, PROT_WRITE);
 52         DEFINE(UM_PROT_EXEC, PROT_EXEC);
 53 }
 54 
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