diff options
Diffstat (limited to 'arch/um/sys-x86_64/user-offsets.c')
| -rw-r--r-- | arch/um/sys-x86_64/user-offsets.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/um/sys-x86_64/user-offsets.c b/arch/um/sys-x86_64/user-offsets.c new file mode 100644 index 0000000..513d17c --- /dev/null +++ b/arch/um/sys-x86_64/user-offsets.c @@ -0,0 +1,86 @@ +#include <stdio.h> +#include <stddef.h> +#include <signal.h> +#define __FRAME_OFFSETS +#include <asm/ptrace.h> +#include <asm/types.h> +/* For some reason, x86_64 defines u64 and u32 only in <pci/types.h>, which I + * refuse to include here, even though they're used throughout the headers. + * These are used in asm/user.h, and that include can't be avoided because of + * the sizeof(struct user_regs_struct) below. + */ +typedef __u64 u64; +typedef __u32 u32; +#include <asm/user.h> + +#define DEFINE(sym, val) \ + asm volatile("\n->" #sym " %0 " #val : : "i" (val)) + +#define OFFSET(sym, str, mem) \ + DEFINE(sym, offsetof(struct str, mem)); + +void foo(void) +{ + OFFSET(SC_RBX, sigcontext, rbx); + OFFSET(SC_RCX, sigcontext, rcx); + OFFSET(SC_RDX, sigcontext, rdx); + OFFSET(SC_RSI, sigcontext, rsi); + OFFSET(SC_RDI, sigcontext, rdi); + OFFSET(SC_RBP, sigcontext, rbp); + OFFSET(SC_RAX, sigcontext, rax); + OFFSET(SC_R8, sigcontext, r8); + OFFSET(SC_R9, sigcontext, r9); + OFFSET(SC_R10, sigcontext, r10); + OFFSET(SC_R11, sigcontext, r11); + OFFSET(SC_R12, sigcontext, r12); + OFFSET(SC_R13, sigcontext, r13); + OFFSET(SC_R14, sigcontext, r14); + OFFSET(SC_R15, sigcontext, r15); + OFFSET(SC_IP, sigcontext, rip); + OFFSET(SC_SP, sigcontext, rsp); + OFFSET(SC_CR2, sigcontext, cr2); + OFFSET(SC_ERR, sigcontext, err); + OFFSET(SC_TRAPNO, sigcontext, trapno); + OFFSET(SC_CS, sigcontext, cs); + OFFSET(SC_FS, sigcontext, fs); + OFFSET(SC_GS, sigcontext, gs); + OFFSET(SC_EFLAGS, sigcontext, eflags); + OFFSET(SC_SIGMASK, sigcontext, oldmask); +#if 0 + OFFSET(SC_ORIG_RAX, sigcontext, orig_rax); + OFFSET(SC_DS, sigcontext, ds); + OFFSET(SC_ES, sigcontext, es); + OFFSET(SC_SS, sigcontext, ss); +#endif + + DEFINE(HOST_FRAME_SIZE, FRAME_SIZE); + DEFINE(HOST_RBX, RBX); + DEFINE(HOST_RCX, RCX); + DEFINE(HOST_RDI, RDI); + DEFINE(HOST_RSI, RSI); + DEFINE(HOST_RDX, RDX); + DEFINE(HOST_RBP, RBP); + DEFINE(HOST_RAX, RAX); + DEFINE(HOST_R8, R8); + DEFINE(HOST_R9, R9); + DEFINE(HOST_R10, R10); + DEFINE(HOST_R11, R11); + DEFINE(HOST_R12, R12); + DEFINE(HOST_R13, R13); + DEFINE(HOST_R14, R14); + DEFINE(HOST_R15, R15); + DEFINE(HOST_ORIG_RAX, ORIG_RAX); + DEFINE(HOST_CS, CS); + DEFINE(HOST_SS, SS); + DEFINE(HOST_EFLAGS, EFLAGS); +#if 0 + DEFINE(HOST_FS, FS); + DEFINE(HOST_GS, GS); + DEFINE(HOST_DS, DS); + DEFINE(HOST_ES, ES); +#endif + + DEFINE(HOST_IP, RIP); + DEFINE(HOST_SP, RSP); + DEFINE(__UM_FRAME_SIZE, sizeof(struct user_regs_struct)); +} |
