* v850-tdep.c: Fix comment for v850_scan_prologue. Remove extra
frame info. Use frame_info's saved_regs instead of matching member in extra_frame_info throughout. (v850_frame_init_saved_regs): New function. (v850_init_extra_frame_info): Move most functionality into v850_frame_init_saved_regs(). * config/v850/tm-v850.h (EXTRA_FRAME_INFO): Remove definition. (v850_frame_find_saved_regs): Remove declaration. (FRAME_FIND_SAVED_REGS): Remove definition. (v850_frame_init_saved_regs): Add declaration. (FRAME_INIT_SAVED_REGS): Add definition.
This commit is contained in:
Corinna Vinschen
parent
629936c5b1
commit
3a06899a96
@ -1,3 +1,17 @@
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2002-05-16 Corinna Vinschen <vinschen@redhat.com>
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* v850-tdep.c: Fix comment for v850_scan_prologue. Remove extra
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frame info. Use frame_info's saved_regs instead of matching member
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in extra_frame_info throughout.
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(v850_frame_init_saved_regs): New function.
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(v850_init_extra_frame_info): Move most functionality into
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v850_frame_init_saved_regs().
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* config/v850/tm-v850.h (EXTRA_FRAME_INFO): Remove definition.
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(v850_frame_find_saved_regs): Remove declaration.
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(FRAME_FIND_SAVED_REGS): Remove definition.
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(v850_frame_init_saved_regs): Add declaration.
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(FRAME_INIT_SAVED_REGS): Add definition.
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2002-05-16 Corinna Vinschen <vinschen@redhat.com>
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* v850-tdep.c: Begin multi-arch'ing v850.
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@ -99,15 +99,12 @@ struct frame_saved_regs;
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struct type;
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struct value;
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#define EXTRA_FRAME_INFO struct frame_saved_regs fsr;
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extern void v850_init_extra_frame_info (struct frame_info *fi);
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#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) v850_init_extra_frame_info (fi)
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#define INIT_FRAME_PC /* Not necessary */
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extern void v850_frame_find_saved_regs (struct frame_info *fi,
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struct frame_saved_regs *regaddr);
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#define FRAME_FIND_SAVED_REGS(fi, regaddr) regaddr = fi->fsr
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extern void v850_frame_init_saved_regs (struct frame_info *fi);
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#define FRAME_INIT_SAVED_REGS(FI) v850_frame_init_saved_regs (FI)
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extern CORE_ADDR v850_frame_chain (struct frame_info *fi);
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#define FRAME_CHAIN(fi) v850_frame_chain (fi)
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@ -285,12 +285,12 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi,
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/* Function: scan_prologue
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Scan the prologue of the function that contains PC, and record what
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we find in PI. PI->fsr must be zeroed by the called. Returns the
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pc after the prologue. Note that the addresses saved in pi->fsr
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are actually just frame relative (negative offsets from the frame
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pointer). This is because we don't know the actual value of the
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frame pointer yet. In some circumstances, the frame pointer can't
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be determined till after we have scanned the prologue. */
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we find in PI. Returns the pc after the prologue. Note that the
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addresses saved in frame->saved_regs are just frame relative (negative
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offsets from the frame pointer). This is because we don't know the
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actual value of the frame pointer yet. In some circumstances, the
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frame pointer can't be determined till after we have scanned the
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prologue. */
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static CORE_ADDR
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v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi)
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@ -536,6 +536,46 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi)
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return current_pc;
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}
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void
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v850_frame_init_saved_regs (struct frame_info *fi)
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{
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struct prologue_info pi;
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struct pifsr pifsrs[NUM_REGS + 1], *pifsr;
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CORE_ADDR func_addr, func_end;
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if (!fi->saved_regs)
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{
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frame_saved_regs_zalloc (fi);
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/* The call dummy doesn't save any registers on the stack, so we
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can return now. */
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if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
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return;
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/* Find the beginning of this function, so we can analyze its
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prologue. */
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if (find_pc_partial_function (fi->pc, NULL, &func_addr, &func_end))
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{
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pi.pifsrs = pifsrs;
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v850_scan_prologue (fi->pc, &pi);
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if (!fi->next && pi.framereg == SP_REGNUM)
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fi->frame = read_register (pi.framereg) - pi.frameoffset;
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for (pifsr = pifsrs; pifsr->framereg; pifsr++)
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{
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fi->saved_regs[pifsr->reg] = pifsr->offset + fi->frame;
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if (pifsr->framereg == SP_REGNUM)
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fi->saved_regs[pifsr->reg] += pi.frameoffset;
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}
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}
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/* Else we're out of luck (can't debug completely stripped code).
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FIXME. */
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}
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}
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/* Function: init_extra_frame_info
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Setup the frame's frame pointer, pc, and frame addresses for saved
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registers. Most of the work is done in scan_prologue().
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@ -553,32 +593,11 @@ void
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v850_init_extra_frame_info (struct frame_info *fi)
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{
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struct prologue_info pi;
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struct pifsr pifsrs[NUM_REGS + 1], *pifsr;
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if (fi->next)
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fi->pc = FRAME_SAVED_PC (fi->next);
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memset (fi->fsr.regs, '\000', sizeof fi->fsr.regs);
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/* The call dummy doesn't save any registers on the stack, so we can return
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now. */
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if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
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return;
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pi.pifsrs = pifsrs;
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v850_scan_prologue (fi->pc, &pi);
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if (!fi->next && pi.framereg == SP_REGNUM)
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fi->frame = read_register (pi.framereg) - pi.frameoffset;
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for (pifsr = pifsrs; pifsr->framereg; pifsr++)
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{
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fi->fsr.regs[pifsr->reg] = pifsr->offset + fi->frame;
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if (pifsr->framereg == SP_REGNUM)
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fi->fsr.regs[pifsr->reg] += pi.frameoffset;
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}
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v850_frame_init_saved_regs (fi);
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}
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/* Function: frame_chain
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@ -630,8 +649,8 @@ v850_find_callers_reg (struct frame_info *fi, int regnum)
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for (; fi; fi = fi->next)
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if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
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return generic_read_register_dummy (fi->pc, fi->frame, regnum);
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else if (fi->fsr.regs[regnum] != 0)
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return read_memory_unsigned_integer (fi->fsr.regs[regnum],
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else if (fi->saved_regs[regnum] != 0)
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return read_memory_unsigned_integer (fi->saved_regs[regnum],
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REGISTER_RAW_SIZE (regnum));
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return read_register (regnum);
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@ -682,9 +701,9 @@ v850_pop_frame (struct frame_info *frame)
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write_register (PC_REGNUM, FRAME_SAVED_PC (frame));
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for (regnum = 0; regnum < NUM_REGS; regnum++)
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if (frame->fsr.regs[regnum] != 0)
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if (frame->saved_regs[regnum] != 0)
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write_register (regnum,
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read_memory_unsigned_integer (frame->fsr.regs[regnum],
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read_memory_unsigned_integer (frame->saved_regs[regnum],
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REGISTER_RAW_SIZE (regnum)));
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write_register (SP_REGNUM, FRAME_FP (frame));
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