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dwarf2.h (DW64_CIE_ID): Define.

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* dwarf2.h (DW64_CIE_ID): Define.
	* dwarf2out.c (DWARF_CIE_ID): Define.
	(output_call_frame_info): Output 0xffffffff before standard 8-byte
	length header.  Use DWARF_CIE_ID.
	(value_format): Use DW_FORM_data4 or DW_FORM_data8 for
	dw_val_class_loc_list depending on DWARF_OFFSET_SIZE.

From-SVN: r112601
This commit is contained in:
Joseph Myers 2006-04-01 01:21:46 +01:00 committed by Joseph Myers
parent 771cdc9426
commit 0c33762a47
3 changed files with 26 additions and 5 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2006-04-01 Joseph S. Myers <joseph@codesourcery.com>
* dwarf2.h (DW64_CIE_ID): Define.
* dwarf2out.c (DWARF_CIE_ID): Define.
(output_call_frame_info): Output 0xffffffff before standard 8-byte
length header. Use DWARF_CIE_ID.
(value_format): Use DW_FORM_data4 or DW_FORM_data8 for
dw_val_class_loc_list depending on DWARF_OFFSET_SIZE.
2006-03-31 Kaz Kojima <kkojima@gcc.gnu.org>
* config/sh/linux-atomic.asm: New file.

1
gcc/dwarf2.h
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@ -757,6 +757,7 @@ enum dwarf_call_frame_info
};
#define DW_CIE_ID 0xffffffff
#define DW64_CIE_ID 0xffffffffffffffffULL
#define DW_CIE_VERSION 1
#define DW_CFA_extended 0

21
gcc/dwarf2out.c
View File

@ -288,6 +288,14 @@ dw_fde_node;
#endif
#endif
/* CIE identifier. */
#if HOST_BITS_PER_WIDE_INT >= 64
#define DWARF_CIE_ID \
(unsigned HOST_WIDE_INT) (DWARF_OFFSET_SIZE == 4 ? DW_CIE_ID : DW64_CIE_ID)
#else
#define DWARF_CIE_ID DW_CIE_ID
#endif
/* A pointer to the base of a table that contains frame description
information for each routine. */
static GTY((length ("fde_table_allocated"))) dw_fde_ref fde_table;
@ -2218,6 +2226,9 @@ output_call_frame_info (int for_eh)
/* Output the CIE. */
ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh);
ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh);
if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4 && !for_eh)
dw2_asm_output_data (4, 0xffffffff,
"Initial length escape value indicating 64-bit DWARF extension");
dw2_asm_output_delta (for_eh ? 4 : DWARF_OFFSET_SIZE, l2, l1,
"Length of Common Information Entry");
ASM_OUTPUT_LABEL (asm_out_file, l1);
@ -2225,7 +2236,7 @@ output_call_frame_info (int for_eh)
/* Now that the CIE pointer is PC-relative for EH,
use 0 to identify the CIE. */
dw2_asm_output_data ((for_eh ? 4 : DWARF_OFFSET_SIZE),
(for_eh ? 0 : DW_CIE_ID),
(for_eh ? 0 : DWARF_CIE_ID),
"CIE Identifier Tag");
dw2_asm_output_data (1, DW_CIE_VERSION, "CIE Version");
@ -2350,6 +2361,9 @@ output_call_frame_info (int for_eh)
targetm.asm_out.internal_label (asm_out_file, FDE_LABEL, for_eh + i * 2);
ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i * 2);
ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i * 2);
if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4 && !for_eh)
dw2_asm_output_data (4, 0xffffffff,
"Initial length escape value indicating 64-bit DWARF extension");
dw2_asm_output_delta (for_eh ? 4 : DWARF_OFFSET_SIZE, l2, l1,
"FDE Length");
ASM_OUTPUT_LABEL (asm_out_file, l1);
@ -6775,6 +6789,7 @@ value_format (dw_attr_ref a)
return DW_FORM_addr;
case dw_val_class_range_list:
case dw_val_class_offset:
case dw_val_class_loc_list:
switch (DWARF_OFFSET_SIZE)
{
case 4:
@ -6784,10 +6799,6 @@ value_format (dw_attr_ref a)
default:
gcc_unreachable ();
}
case dw_val_class_loc_list:
/* FIXME: Could be DW_FORM_data8, with a > 32 bit size
.debug_loc section */
return DW_FORM_data4;
case dw_val_class_loc:
switch (constant_size (size_of_locs (AT_loc (a))))
{