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 } 101