-static LONGEST
-mipsnbsd_sigtramp_offset (struct frame_info *next_frame)
-{
- CORE_ADDR pc = frame_pc_unwind (next_frame);
- const char *retcode = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
- ? sigtramp_retcode_mipseb : sigtramp_retcode_mipsel;
- unsigned char ret[RETCODE_SIZE], w[4];
- LONGEST off;
- int i;
-
- if (!safe_frame_unwind_memory (next_frame, pc, w, sizeof (w)))
- return -1;
-
- for (i = 0; i < RETCODE_NWORDS; i++)
- {
- if (memcmp (w, retcode + (i * 4), 4) == 0)
- break;
- }
- if (i == RETCODE_NWORDS)
- return -1;
-
- off = i * 4;
- pc -= off;
-
- if (!safe_frame_unwind_memory (next_frame, pc, ret, sizeof (ret)))
- return -1;
-
- if (memcmp (ret, retcode, RETCODE_SIZE) == 0)
- return off;
-
- return -1;
-}