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[COMMIT] Add support for DW_EH_PE_uleb128 and DW_EH_PE_sleb128
- From: Mark dot Kettenis at sibelius dot xs4all dot nl
- To: gdb-patches at sources dot redhat dot com
- Date: Thu, 4 Nov 2004 22:15:33 +0100 (CET)
- Subject: [COMMIT] Add support for DW_EH_PE_uleb128 and DW_EH_PE_sleb128
Seems there are GCC configs out there that could be using these.
Committed,
Mark
Index: ChangeLog
from Mark Kettenis <kettenis@gnu.org>
* dwarf2-frame.c (read_encoded_value): Change type of third
argument to `unsigned char *'. Add support for LEB128 encodings.
Index: dwarf2-frame.c
===================================================================
RCS file: /cvs/src/src/gdb/dwarf2-frame.c,v
retrieving revision 1.40
diff -u -p -r1.40 dwarf2-frame.c
--- dwarf2-frame.c 2 Nov 2004 22:25:47 -0000 1.40
+++ dwarf2-frame.c 4 Nov 2004 21:06:30 -0000
@@ -1067,7 +1067,7 @@ size_of_encoded_value (unsigned char enc
static CORE_ADDR
read_encoded_value (struct comp_unit *unit, unsigned char encoding,
- char *buf, unsigned int *bytes_read_ptr)
+ unsigned char *buf, unsigned int *bytes_read_ptr)
{
int ptr_len = size_of_encoded_value (DW_EH_PE_absptr);
ptrdiff_t offset;
@@ -1088,7 +1088,7 @@ read_encoded_value (struct comp_unit *un
break;
case DW_EH_PE_pcrel:
base = bfd_get_section_vma (unit->bfd, unit->dwarf_frame_section);
- base += (buf - unit->dwarf_frame_buffer);
+ base += ((char *) buf - unit->dwarf_frame_buffer);
break;
case DW_EH_PE_datarel:
base = unit->dbase;
@@ -1106,7 +1106,7 @@ read_encoded_value (struct comp_unit *un
break;
case DW_EH_PE_aligned:
base = 0;
- offset = buf - unit->dwarf_frame_buffer;
+ offset = (char *) buf - unit->dwarf_frame_buffer;
if ((offset % ptr_len) != 0)
{
*bytes_read_ptr = ptr_len - (offset % ptr_len);
@@ -1122,6 +1122,13 @@ read_encoded_value (struct comp_unit *un
switch (encoding & 0x0f)
{
+ case DW_EH_PE_uleb128:
+ {
+ ULONGEST value;
+ unsigned char *end_buf = buf + (sizeof (value) + 1) * 8 / 7;
+ *bytes_read_ptr = read_uleb128 (buf, end_buf, &value) - buf;
+ return base + value;
+ }
case DW_EH_PE_udata2:
*bytes_read_ptr += 2;
return (base + bfd_get_16 (unit->abfd, (bfd_byte *) buf));
@@ -1131,6 +1138,13 @@ read_encoded_value (struct comp_unit *un
case DW_EH_PE_udata8:
*bytes_read_ptr += 8;
return (base + bfd_get_64 (unit->abfd, (bfd_byte *) buf));
+ case DW_EH_PE_sleb128:
+ {
+ LONGEST value;
+ char *end_buf = buf + (sizeof (value) + 1) * 8 / 7;
+ *bytes_read_ptr = read_sleb128 (buf, end_buf, &value) - buf;
+ return base + value;
+ }
case DW_EH_PE_sdata2:
*bytes_read_ptr += 2;
return (base + bfd_get_signed_16 (unit->abfd, (bfd_byte *) buf));