diff options
Diffstat (limited to 'gdb/config/ns32k/tm-umax.h')
| -rw-r--r-- | gdb/config/ns32k/tm-umax.h | 114 |
1 files changed, 19 insertions, 95 deletions
diff --git a/gdb/config/ns32k/tm-umax.h b/gdb/config/ns32k/tm-umax.h index 8583866..8496307 100644 --- a/gdb/config/ns32k/tm-umax.h +++ b/gdb/config/ns32k/tm-umax.h @@ -52,11 +52,10 @@ extern CORE_ADDR umax_skip_prologue (CORE_ADDR); /* Stack grows downward. */ -#define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) +#define INNER_THAN(lhs,rhs) core_addr_lessthan ((lhs), (rhs)) -/* Sequence of bytes for breakpoint instruction. */ - -#define BREAKPOINT {0xf2} +extern const unsigned char *ns32k_breakpoint_from_pc (CORE_ADDR *, int *); +#define BREAKPOINT_FROM_PC(PCP, LENP) ns32k_breakpoint_from_pc ((PCP), (LENP)) /* Amount PC must be decremented by after a breakpoint. This is often the number of bytes in BREAKPOINT @@ -157,116 +156,41 @@ struct type *ns32k_register_virtual_type (int); /* Describe the pointer in each stack frame to the previous stack frame (its caller). */ -/* FRAME_CHAIN takes a frame's nominal address - and produces the frame's chain-pointer. */ - -/* In the case of the ns32000 series, the frame's nominal address is the FP - value, and at that address is saved previous FP value as a 4-byte word. */ - -#define FRAME_CHAIN(thisframe) \ - (!inside_entry_file ((thisframe)->pc) ? \ - read_memory_integer ((thisframe)->frame, 4) :\ - 0) - -/* Define other aspects of the stack frame. */ - -#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4)) - -/* Compute base of arguments. */ +CORE_ADDR ns32k_frame_chain (struct frame_info *); +#define FRAME_CHAIN(thisframe) ns32k_frame_chain ((thisframe)) -#define FRAME_ARGS_ADDRESS(fi) \ - ((ns32k_get_enter_addr ((fi)->pc) > 1) ? \ - ((fi)->frame) : (read_register (SP_REGNUM) - 4)) +CORE_ADDR ns32k_frame_saved_pc (struct frame_info *); +#define FRAME_SAVED_PC(FRAME) ns32k_frame_saved_pc ((FRAME)) -#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) +CORE_ADDR ns32k_frame_args_address (struct frame_info *); +#define FRAME_ARGS_ADDRESS(fi) ns32k_frame_args_address ((fi)) -/* Get the address of the enter opcode for this function, if it is active. - Returns positive address > 1 if pc is between enter/exit, - 1 if pc before enter or after exit, 0 otherwise. */ - -extern CORE_ADDR ns32k_get_enter_addr (CORE_ADDR); +CORE_ADDR ns32k_frame_locals_address (struct frame_info *); +#define FRAME_LOCALS_ADDRESS(fi) ns32k_frame_locals_address ((fi)) /* Return number of args passed to a frame. Can return -1, meaning no way to tell. */ -extern int umax_frame_num_args (struct frame_info *fi); +extern int umax_frame_num_args (struct frame_info *); #define FRAME_NUM_ARGS(fi) (umax_frame_num_args ((fi))) /* Return number of bytes at start of arglist that are not really args. */ #define FRAME_ARGS_SKIP 8 -/* Put here the code to store, into a struct frame_saved_regs, - the addresses of the saved registers of frame described by FRAME_INFO. - This includes special registers such as pc and fp saved in special - ways in the stack frame. sp is even more special: - the address we return for it IS the sp for the next frame. */ - -extern int ns32k_localcount (CORE_ADDR enter_pc); - -#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ -{ \ - register int regmask, regnum; \ - int localcount; \ - register CORE_ADDR enter_addr; \ - register CORE_ADDR next_addr; \ - \ - memset (&(frame_saved_regs), '\0', sizeof (frame_saved_regs)); \ - enter_addr = ns32k_get_enter_addr ((frame_info)->pc); \ - if (enter_addr > 1) \ - { \ - regmask = read_memory_integer (enter_addr+1, 1) & 0xff; \ - localcount = ns32k_localcount (enter_addr); \ - next_addr = (frame_info)->frame + localcount; \ - for (regnum = 0; regnum < 8; regnum++, regmask >>= 1) \ - (frame_saved_regs).regs[regnum] = (regmask & 1) ? \ - (next_addr -= 4) : 0; \ - (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame + 4;\ - (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 4;\ - (frame_saved_regs).regs[FP_REGNUM] = \ - (read_memory_integer ((frame_info)->frame, 4));\ - } \ - else if (enter_addr == 1) \ - { \ - CORE_ADDR sp = read_register (SP_REGNUM); \ - (frame_saved_regs).regs[PC_REGNUM] = sp; \ - (frame_saved_regs).regs[SP_REGNUM] = sp + 4; \ - } \ -} +void ns32k_frame_init_saved_regs (struct frame_info *); +#define FRAME_INIT_SAVED_REGS(FI) ns32k_frame_init_saved_regs ((FI)) + /* Things needed for making the inferior call functions. */ -/* Push an empty stack frame, to record the current PC, etc. */ - -#define PUSH_DUMMY_FRAME \ -{ register CORE_ADDR sp = read_register (SP_REGNUM);\ - register int regnum; \ - sp = push_word (sp, read_register (PC_REGNUM)); \ - sp = push_word (sp, read_register (FP_REGNUM)); \ - write_register (FP_REGNUM, sp); \ - for (regnum = 0; regnum < 8; regnum++) \ - sp = push_word (sp, read_register (regnum)); \ - write_register (SP_REGNUM, sp); \ -} +extern void ns32k_push_dummy_frame (void); +#define PUSH_DUMMY_FRAME ns32k_push_dummy_frame () /* Discard from the stack the innermost frame, restoring all registers. */ -#define POP_FRAME \ -{ register struct frame_info *frame = get_current_frame (); \ - register CORE_ADDR fp; \ - register int regnum; \ - struct frame_saved_regs fsr; \ - struct frame_info *fi; \ - fp = frame->frame; \ - get_frame_saved_regs (frame, &fsr); \ - for (regnum = 0; regnum < 8; regnum++) \ - if (fsr.regs[regnum]) \ - write_register (regnum, read_memory_integer (fsr.regs[regnum], 4)); \ - write_register (FP_REGNUM, read_memory_integer (fp, 4)); \ - write_register (PC_REGNUM, read_memory_integer (fp + 4, 4)); \ - write_register (SP_REGNUM, fp + 8); \ - flush_cached_frames (); \ -} +extern void ns32k_pop_frame (void); +#define POP_FRAME ns32k_pop_frame () /* This sequence of words is the instructions enter 0xff,0 82 ff 00 |