MatCat.OpenSource/8sa1-binutils-gdb
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* readelf.c (byte_get_signed): New.

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(get_encoded_value): New.
        (display_debug_frames): Use it.  Always pre-process opcodes.
This commit is contained in:
Richard Henderson 2003-05-31 19:29:19 +00:00
parent cfc14b3aa6
commit 38fafa6d08
2 changed files with 52 additions and 4 deletions
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6
binutils/ChangeLog
View File

@ -1,3 +1,9 @@
2003-05-31 Richard Henderson <rth@redhat.com>
* readelf.c (byte_get_signed): New.
(get_encoded_value): New.
(display_debug_frames): Use it. Always pre-process opcodes.
2003-05-20 Michal Ludvig <mludvig@suse.cz>
* readelf.c (display_debug_frames): Print both registers

50
binutils/readelf.c
View File

@ -173,6 +173,8 @@ static bfd_vma byte_get_little_endian
PARAMS ((unsigned char *, int));
static bfd_vma byte_get_big_endian
PARAMS ((unsigned char *, int));
static bfd_vma byte_get_signed
PARAMS ((unsigned char *, int));
static void (*byte_put)
PARAMS ((unsigned char *, bfd_vma, int));
static void byte_put_little_endian
@ -556,6 +558,29 @@ byte_get_little_endian (field, size)
}
}
static bfd_vma
byte_get_signed (field, size)
unsigned char *field;
int size;
{
bfd_vma x = byte_get (field, size);
switch (size)
{
case 1:
return (x ^ 0x80) - 0x80;
case 2:
return (x ^ 0x8000) - 0x8000;
case 4:
return (x ^ 0x80000000) - 0x80000000;
case 8:
case -8:
return x;
default:
abort ();
}
}
static void
byte_put_little_endian (field, value, size)
unsigned char * field;
@ -8668,6 +8693,7 @@ Frame_Chunk;
static void frame_need_space PARAMS ((Frame_Chunk *, int));
static void frame_display_row PARAMS ((Frame_Chunk *, int *, int *));
static int size_of_encoded_value PARAMS ((int));
static bfd_vma get_encoded_value PARAMS ((unsigned char *, int));
static void
frame_need_space (fc, reg)
@ -8775,6 +8801,18 @@ size_of_encoded_value (encoding)
}
}
static bfd_vma
get_encoded_value (data, encoding)
unsigned char *data;
int encoding;
{
int size = size_of_encoded_value (encoding);
if (encoding & DW_EH_PE_signed)
return byte_get_signed (data, size);
else
return byte_get (data, size);
}
#define GET(N) byte_get (start, N); start += N
#define LEB() read_leb128 (start, & length_return, 0); start += length_return
#define SLEB() read_leb128 (start, & length_return, 1); start += length_return
@ -8980,7 +9018,7 @@ display_debug_frames (section, start, file)
if (fc->fde_encoding)
encoded_ptr_size = size_of_encoded_value (fc->fde_encoding);
fc->pc_begin = byte_get (start, encoded_ptr_size);
fc->pc_begin = get_encoded_value (start, fc->fde_encoding);
if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel)
fc->pc_begin += section->sh_addr + (start - section_start);
start += encoded_ptr_size;
@ -9011,8 +9049,12 @@ display_debug_frames (section, start, file)
/* At this point, fc is the current chunk, cie (if any) is set, and we're
about to interpret instructions for the chunk. */
if (do_debug_frames_interp)
/* ??? At present we need to do this always, since this sizes the
fc->col_type and fc->col_offset arrays, which we write into always.
We should probably split the interpreted and non-interpreted bits
into two different routines, since there's so much that doesn't
really overlap between them. */
if (1 || do_debug_frames_interp)
{
/* Start by making a pass over the chunk, allocating storage
and taking note of what registers are used. */
@ -9175,7 +9217,7 @@ display_debug_frames (section, start, file)
break;
case DW_CFA_set_loc:
vma = byte_get (start, encoded_ptr_size);
vma = get_encoded_value (start, fc->fde_encoding);
if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel)
vma += section->sh_addr + (start - section_start);
start += encoded_ptr_size;