#define KERNEL_U_ADDR (0x80000000 - (UPAGES * NBPG))
+/* The magic numbers below are offsets into u_ar0 in the user struct.
+ They live in <machine/reg.h>. Gdb calls this macro with blockend
+ holding u.u_ar0 - KERNEL_U_ADDR. Only the registers listed are
+ saved in the u area (along with a few others that aren't useful
+ here. See <machine/reg.h>). */
+
+#define REGISTER_U_ADDR(addr, blockend, regno) \
+{ struct user foo; /* needed for finding fpu regs */ \
+switch (regno) { \
+ case 0: \
+ addr = blockend + EAX * sizeof(int); break; \
+ case 1: \
+ addr = blockend + EDX * sizeof(int); break; \
+ case 2: \
+ addr = blockend + ECX * sizeof(int); break; \
+ case 3: /* st(0) */ \
+ addr = blockend - \
+ ((int)&foo.u_fpusave.fpu_stack[0][0] - (int)&foo); \
+ break; \
+ case 4: /* st(1) */ \
+ addr = blockend - \
+ ((int) &foo.u_fpusave.fpu_stack[1][0] - (int)&foo); \
+ break; \
+ case 5: \
+ addr = blockend + EBX * sizeof(int); break; \
+ case 6: \
+ addr = blockend + ESI * sizeof(int); break; \
+ case 7: \
+ addr = blockend + EDI * sizeof(int); break; \
+ case 8: /* st(2) */ \
+ addr = blockend - \
+ ((int) &foo.u_fpusave.fpu_stack[2][0] - (int)&foo); \
+ break; \
+ case 9: /* st(3) */ \
+ addr = blockend - \
+ ((int) &foo.u_fpusave.fpu_stack[3][0] - (int)&foo); \
+ break; \
+ case 10: /* st(4) */ \
+ addr = blockend - \
+ ((int) &foo.u_fpusave.fpu_stack[4][0] - (int)&foo); \
+ break; \
+ case 11: /* st(5) */ \
+ addr = blockend - \
+ ((int) &foo.u_fpusave.fpu_stack[5][0] - (int)&foo); \
+ break; \
+ case 12: /* st(6) */ \
+ addr = blockend - \
+ ((int) &foo.u_fpusave.fpu_stack[6][0] - (int)&foo); \
+ break; \
+ case 13: /* st(7) */ \
+ addr = blockend - \
+ ((int) &foo.u_fpusave.fpu_stack[7][0] - (int)&foo); \
+ break; \
+ case 14: \
+ addr = blockend + ESP * sizeof(int); break; \
+ case 15: \
+ addr = blockend + EBP * sizeof(int); break; \
+ case 16: \
+ addr = blockend + EIP * sizeof(int); break; \
+ case 17: \
+ addr = blockend + FLAGS * sizeof(int); break; \
+ case 18: /* fp1 */ \
+ case 19: /* fp2 */ \
+ case 20: /* fp3 */ \
+ case 21: /* fp4 */ \
+ case 22: /* fp5 */ \
+ case 23: /* fp6 */ \
+ case 24: /* fp7 */ \
+ case 25: /* fp8 */ \
+ case 26: /* fp9 */ \
+ case 27: /* fp10 */ \
+ case 28: /* fp11 */ \
+ case 29: /* fp12 */ \
+ case 30: /* fp13 */ \
+ case 31: /* fp14 */ \
+ case 32: /* fp15 */ \
+ case 33: /* fp16 */ \
+ case 34: /* fp17 */ \
+ case 35: /* fp18 */ \
+ case 36: /* fp19 */ \
+ case 37: /* fp20 */ \
+ case 38: /* fp21 */ \
+ case 39: /* fp22 */ \
+ case 40: /* fp23 */ \
+ case 41: /* fp24 */ \
+ case 42: /* fp25 */ \
+ case 43: /* fp26 */ \
+ case 44: /* fp27 */ \
+ case 45: /* fp28 */ \
+ case 46: /* fp29 */ \
+ case 47: /* fp30 */ \
+ case 48: /* fp31 */ \
+ addr = blockend - \
+ ((int) &foo.u_fpasave.fpa_regs[(regno)-18] - (int)&foo); \
+ } \
+}
+
/* Compensate for lack of `vprintf' function. */
#define MISSING_VPRINTF