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Add a limit parameter for scanning the prologue.

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This commit is contained in:
Kevin Buettner
2000-10-05 01:13:53 +00:00
parent d1e28e240d
commit 077276e87b
2 changed files with 15 additions and 9 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2000-10-04 Kevin Buettner <kevinb@redhat.com>
* rs6000-tdep.c (skip_prologue): Add new parameter lim_pc.
Update all callers.
2000-10-03 Kevin Buettner <kevinb@redhat.com> 2000-10-03 Kevin Buettner <kevinb@redhat.com>
* remote-bug.c (bug_xfer_memory, bug_insert_breakpoint, * remote-bug.c (bug_xfer_memory, bug_insert_breakpoint,

19
gdb/rs6000-tdep.c
View File

@ -118,7 +118,8 @@ void (*rs6000_set_host_arch_hook) (int) = NULL;
static CORE_ADDR branch_dest (int opcode, int instr, CORE_ADDR pc, static CORE_ADDR branch_dest (int opcode, int instr, CORE_ADDR pc,
CORE_ADDR safety); CORE_ADDR safety);
static CORE_ADDR skip_prologue (CORE_ADDR, struct rs6000_framedata *); static CORE_ADDR skip_prologue (CORE_ADDR, CORE_ADDR,
struct rs6000_framedata *);
static void frame_get_saved_regs (struct frame_info * fi, static void frame_get_saved_regs (struct frame_info * fi,
struct rs6000_framedata * fdatap); struct rs6000_framedata * fdatap);
static CORE_ADDR frame_initial_stack_address (struct frame_info *); static CORE_ADDR frame_initial_stack_address (struct frame_info *);
@ -135,7 +136,7 @@ static CORE_ADDR
rs6000_skip_prologue (CORE_ADDR pc) rs6000_skip_prologue (CORE_ADDR pc)
{ {
struct rs6000_framedata frame; struct rs6000_framedata frame;
pc = skip_prologue (pc, &frame); pc = skip_prologue (pc, 0, &frame);
return pc; return pc;
} }
@ -381,7 +382,7 @@ rs6000_software_single_step (unsigned int signal, int insert_breakpoints_p)
#define GET_SRC_REG(x) (((x) >> 21) & 0x1f) #define GET_SRC_REG(x) (((x) >> 21) & 0x1f)
static CORE_ADDR static CORE_ADDR
skip_prologue (CORE_ADDR pc, struct rs6000_framedata *fdata) skip_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct rs6000_framedata *fdata)
{ {
CORE_ADDR orig_pc = pc; CORE_ADDR orig_pc = pc;
CORE_ADDR last_prologue_pc; CORE_ADDR last_prologue_pc;
@ -403,7 +404,7 @@ skip_prologue (CORE_ADDR pc, struct rs6000_framedata *fdata)
fdata->nosavedpc = 1; fdata->nosavedpc = 1;
pc -= 4; pc -= 4;
for (;;) while (lim_pc == 0 || pc < lim_pc - 4)
{ {
pc += 4; pc += 4;
@ -700,7 +701,7 @@ rs6000_pop_frame (void)
saved %pc value in the previous frame. */ saved %pc value in the previous frame. */
addr = get_pc_function_start (frame->pc); addr = get_pc_function_start (frame->pc);
(void) skip_prologue (addr, &fdata); (void) skip_prologue (addr, frame->pc, &fdata);
wordsize = TDEP->wordsize; wordsize = TDEP->wordsize;
if (fdata.frameless) if (fdata.frameless)
@ -1106,7 +1107,7 @@ rs6000_frameless_function_invocation (struct frame_info *fi)
return 0; return 0;
} }
(void) skip_prologue (func_start, &fdata); (void) skip_prologue (func_start, fi->pc, &fdata);
return fdata.frameless; return fdata.frameless;
} }
@ -1132,7 +1133,7 @@ rs6000_frame_saved_pc (struct frame_info *fi)
if (!func_start) if (!func_start)
return 0; return 0;
(void) skip_prologue (func_start, &fdata); (void) skip_prologue (func_start, fi->pc, &fdata);
if (fdata.lr_offset == 0 && fi->next != NULL) if (fdata.lr_offset == 0 && fi->next != NULL)
{ {
@ -1167,7 +1168,7 @@ frame_get_saved_regs (struct frame_info *fi, struct rs6000_framedata *fdatap)
if (fdatap == NULL) if (fdatap == NULL)
{ {
fdatap = &work_fdata; fdatap = &work_fdata;
(void) skip_prologue (get_pc_function_start (fi->pc), fdatap); (void) skip_prologue (get_pc_function_start (fi->pc), fi->pc, fdatap);
} }
frame_saved_regs_zalloc (fi); frame_saved_regs_zalloc (fi);
@ -1243,7 +1244,7 @@ frame_initial_stack_address (struct frame_info *fi)
/* find out if this function is using an alloca register.. */ /* find out if this function is using an alloca register.. */
(void) skip_prologue (get_pc_function_start (fi->pc), &fdata); (void) skip_prologue (get_pc_function_start (fi->pc), fi->pc, &fdata);
/* if saved registers of this frame are not known yet, read and cache them. */ /* if saved registers of this frame are not known yet, read and cache them. */