+/* From /usr/src/lib/libc/i386/gen/_setjmp.S. */
+static int i386fbsd_jmp_buf_reg_offset[] =
+{
+ -1, /* %eax */
+ -1, /* %ecx */
+ -1, /* %edx */
+ 1 * 4, /* %ebx */
+ 2 * 4, /* %esp */
+ 3 * 4, /* %ebp */
+ 4 * 4, /* %esi */
+ 5 * 4, /* %edi */
+ 0 * 4 /* %eip */
+};
+
+static void
+i386fbsd_supply_uthread (struct regcache *regcache,
+ int regnum, CORE_ADDR addr)
+{
+ char buf[4];
+ int i;
+
+ gdb_assert (regnum >= -1);
+
+ for (i = 0; i < ARRAY_SIZE (i386fbsd_jmp_buf_reg_offset); i++)
+ {
+ if (i386fbsd_jmp_buf_reg_offset[i] != -1
+ && (regnum == -1 || regnum == i))
+ {
+ read_memory (addr + i386fbsd_jmp_buf_reg_offset[i], buf, 4);
+ regcache_raw_supply (regcache, i, buf);
+ }
+ }
+}
+
+static void
+i386fbsd_collect_uthread (const struct regcache *regcache,
+ int regnum, CORE_ADDR addr)
+{
+ char buf[4];
+ int i;
+
+ gdb_assert (regnum >= -1);
+
+ for (i = 0; i < ARRAY_SIZE (i386fbsd_jmp_buf_reg_offset); i++)
+ {
+ if (i386fbsd_jmp_buf_reg_offset[i] != -1
+ && (regnum == -1 || regnum == i))
+ {
+ regcache_raw_collect (regcache, i, buf);
+ write_memory (addr + i386fbsd_jmp_buf_reg_offset[i], buf, 4);
+ }
+ }
+}
+