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* readelf.c (struct Frame_Chunk): Add cfa_exp. 

(frame_display_row): Just print "exp" for cfa or register
        defined by a location expression.
        (display_debug_frames): Handle DW_CFA_def_cfa_expression,
        DW_CFA_expression, DW_CFA_MIPS_advance_loc8.
This commit is contained in:
Richard Henderson 2003-05-04 00:20:43 +00:00
parent 1fffbe2fa5
commit 6304463472
2 changed files with 70 additions and 13 deletions
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8
binutils/ChangeLog
View File

@ -1,3 +1,11 @@
2003-05-03 Richard Henderson <rth@redhat.com>
* readelf.c (struct Frame_Chunk): Add cfa_exp.
(frame_display_row): Just print "exp" for cfa or register
defined by a location expression.
(display_debug_frames): Handle DW_CFA_def_cfa_expression,
DW_CFA_expression, DW_CFA_MIPS_advance_loc8.
2003-04-30 H.J. Lu <hjl@gnu.org>
* objdump.c (only): Change it to char **.

75
binutils/readelf.c
View File

@ -8657,6 +8657,7 @@ typedef struct Frame_Chunk
int cfa_offset;
int ra;
unsigned char fde_encoding;
unsigned char cfa_exp;
}
Frame_Chunk;
@ -8723,7 +8724,10 @@ frame_display_row (fc, need_col_headers, max_regs)
}
printf ("%08lx ", fc->pc_begin);
sprintf (tmp, "r%d%+d", fc->cfa_reg, fc->cfa_offset);
if (fc->cfa_exp)
strcpy (tmp, "exp");
else
sprintf (tmp, "r%d%+d", fc->cfa_reg, fc->cfa_offset);
printf ("%-8s ", tmp);
for (r = 0; r < fc->ncols; r++)
@ -8744,6 +8748,9 @@ frame_display_row (fc, need_col_headers, max_regs)
case DW_CFA_register:
sprintf (tmp, "r%d", fc->col_offset[r]);
break;
case DW_CFA_expression:
strcpy (tmp, "exp");
break;
default:
strcpy (tmp, "n/a");
break;
@ -9014,7 +9021,7 @@ display_debug_frames (section, start, file)
while (start < block_end)
{
unsigned op, opa;
unsigned long reg;
unsigned long reg, tmp;
op = *start++;
opa = op & 0x3f;
@ -9082,6 +9089,17 @@ display_debug_frames (section, start, file)
case DW_CFA_def_cfa_offset:
LEB ();
break;
case DW_CFA_def_cfa_expression:
tmp = LEB ();
start += tmp;
break;
case DW_CFA_expression:
reg = LEB ();
tmp = LEB ();
start += tmp;
frame_need_space (fc, reg);
fc->col_type[reg] = DW_CFA_undefined;
break;
case DW_CFA_offset_extended_sf:
reg = LEB (); SLEB ();
frame_need_space (fc, reg);
@ -9093,6 +9111,9 @@ display_debug_frames (section, start, file)
case DW_CFA_def_cfa_offset_sf:
SLEB ();
break;
case DW_CFA_MIPS_advance_loc8:
start += 8;
break;
case DW_CFA_GNU_args_size:
LEB ();
break;
@ -9270,6 +9291,7 @@ display_debug_frames (section, start, file)
case DW_CFA_def_cfa:
fc->cfa_reg = LEB ();
fc->cfa_offset = LEB ();
fc->cfa_exp = 0;
if (! do_debug_frames_interp)
printf (" DW_CFA_def_cfa: r%d ofs %d\n",
fc->cfa_reg, fc->cfa_offset);
@ -9277,6 +9299,7 @@ display_debug_frames (section, start, file)
case DW_CFA_def_cfa_register:
fc->cfa_reg = LEB ();
fc->cfa_exp = 0;
if (! do_debug_frames_interp)
printf (" DW_CFA_def_cfa_reg: r%d\n", fc->cfa_reg);
break;
@ -9292,6 +9315,31 @@ display_debug_frames (section, start, file)
printf (" DW_CFA_nop\n");
break;
case DW_CFA_def_cfa_expression:
ul = LEB ();
if (! do_debug_frames_interp)
{
printf (" DW_CFA_def_cfa_expression (");
decode_location_expression (start, addr_size, ul);
printf (")\n");
}
fc->cfa_exp = 1;
start += ul;
break;
case DW_CFA_expression:
reg = LEB ();
ul = LEB ();
if (! do_debug_frames_interp)
{
printf (" DW_CFA_expression: r%ld (", reg);
decode_location_expression (start, addr_size, ul);
printf (")\n");
}
fc->col_type[reg] = DW_CFA_expression;
start += ul;
break;
case DW_CFA_offset_extended_sf:
reg = LEB ();
l = SLEB ();
@ -9306,6 +9354,7 @@ display_debug_frames (section, start, file)
case DW_CFA_def_cfa_sf:
fc->cfa_reg = LEB ();
fc->cfa_offset = SLEB ();
fc->cfa_exp = 0;
if (! do_debug_frames_interp)
printf (" DW_CFA_def_cfa_sf: r%d ofs %d\n",
fc->cfa_reg, fc->cfa_offset);
@ -9317,6 +9366,17 @@ display_debug_frames (section, start, file)
printf (" DW_CFA_def_cfa_offset_sf: %d\n", fc->cfa_offset);
break;
case DW_CFA_MIPS_advance_loc8:
ofs = byte_get (start, 8); start += 8;
if (do_debug_frames_interp)
frame_display_row (fc, &need_col_headers, &max_regs);
else
printf (" DW_CFA_MIPS_advance_loc8: %ld to %08lx\n",
ofs * fc->code_factor,
fc->pc_begin + ofs * fc->code_factor);
fc->pc_begin += ofs * fc->code_factor;
break;
case DW_CFA_GNU_window_save:
if (! do_debug_frames_interp)
printf (" DW_CFA_GNU_window_save\n");
@ -9339,17 +9399,6 @@ display_debug_frames (section, start, file)
fc->col_offset[reg] = l * fc->data_factor;
break;
/* FIXME: How do we handle these? */
case DW_CFA_def_cfa_expression:
fprintf (stderr, "unsupported DW_CFA_def_cfa_expression\n");
start = block_end;
break;
case DW_CFA_expression:
fprintf (stderr, "unsupported DW_CFA_expression\n");
start = block_end;
break;
default:
fprintf (stderr, "unsupported or unknown DW_CFA_%d\n", op);
start = block_end;