mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
gas/ChangeLog:
* dwarf2dbg.c (DWARF2_USE_FIXED_ADVANCE_PC): New. (out_sleb128): New. (out_fixed_inc_line_addr): New. (process_entries): Use out_fixed_inc_line_addr when DWARF2_USE_FIXED_ADVANCE_PC is set. * config/tc-xtensa.h (DWARF2_USE_FIXED_ADVANCE_PC): Define. gas/testsuite/ChangeLog: * gas/lns/lns-common-1-alt.d: New file. * gas/lns/lns.exp: Use lns-common-1-alt.d for xtensa targets.
This commit is contained in:
Bob Wilson
parent
ce928021ab
commit
1737851b20
@ -1,3 +1,12 @@
|
||||
2006-08-08 Bob Wilson <bob.wilson@acm.org>
|
||||
|
||||
* dwarf2dbg.c (DWARF2_USE_FIXED_ADVANCE_PC): New.
|
||||
(out_sleb128): New.
|
||||
(out_fixed_inc_line_addr): New.
|
||||
(process_entries): Use out_fixed_inc_line_addr when
|
||||
DWARF2_USE_FIXED_ADVANCE_PC is set.
|
||||
* config/tc-xtensa.h (DWARF2_USE_FIXED_ADVANCE_PC): Define.
|
||||
|
||||
2006-08-08 DJ Delorie <dj@redhat.com>
|
||||
|
||||
* config/tc-sh.c (sh_frob_section): Canonicalize pointers to local
|
||||
|
||||
@ -371,6 +371,9 @@ extern char *xtensa_section_rename (char *);
|
||||
#define MD_APPLY_SYM_VALUE(FIX) 0
|
||||
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
|
||||
|
||||
/* Use line number format that is amenable to linker relaxation. */
|
||||
#define DWARF2_USE_FIXED_ADVANCE_PC (linkrelax != 0)
|
||||
|
||||
|
||||
/* Resource reservation info functions. */
|
||||
|
||||
|
||||
@ -88,6 +88,13 @@
|
||||
#define DL_FILES 1
|
||||
#define DL_BODY 2
|
||||
|
||||
/* If linker relaxation might change offsets in the code, the DWARF special
|
||||
opcodes and variable-length operands cannot be used. If this macro is
|
||||
nonzero, use the DW_LNS_fixed_advance_pc opcode instead. */
|
||||
#ifndef DWARF2_USE_FIXED_ADVANCE_PC
|
||||
# define DWARF2_USE_FIXED_ADVANCE_PC 0
|
||||
#endif
|
||||
|
||||
/* First special line opcde - leave room for the standard opcodes.
|
||||
Note: If you want to change this, you'll have to update the
|
||||
"standard_opcode_lengths" table that is emitted below in
|
||||
@ -191,11 +198,13 @@ static void out_two (int);
|
||||
static void out_four (int);
|
||||
static void out_abbrev (int, int);
|
||||
static void out_uleb128 (addressT);
|
||||
static void out_sleb128 (addressT);
|
||||
static offsetT get_frag_fix (fragS *, segT);
|
||||
static void out_set_addr (symbolS *);
|
||||
static int size_inc_line_addr (int, addressT);
|
||||
static void emit_inc_line_addr (int, addressT, char *, int);
|
||||
static void out_inc_line_addr (int, addressT);
|
||||
static void out_fixed_inc_line_addr (int, symbolS *, symbolS *);
|
||||
static void relax_inc_line_addr (int, symbolS *, symbolS *);
|
||||
static void process_entries (segT, struct line_entry *);
|
||||
static void out_file_list (void);
|
||||
@ -744,6 +753,14 @@ out_uleb128 (addressT value)
|
||||
output_leb128 (frag_more (sizeof_leb128 (value, 0)), value, 0);
|
||||
}
|
||||
|
||||
/* Emit a signed "little-endian base 128" number. */
|
||||
|
||||
static void
|
||||
out_sleb128 (addressT value)
|
||||
{
|
||||
output_leb128 (frag_more (sizeof_leb128 (value, 1)), value, 1);
|
||||
}
|
||||
|
||||
/* Emit a tuple for .debug_abbrev. */
|
||||
|
||||
static inline void
|
||||
@ -977,6 +994,45 @@ out_inc_line_addr (int line_delta, addressT addr_delta)
|
||||
emit_inc_line_addr (line_delta, addr_delta, frag_more (len), len);
|
||||
}
|
||||
|
||||
/* Write out an alternative form of line and address skips using
|
||||
DW_LNS_fixed_advance_pc opcodes. This uses more space than the default
|
||||
line and address information, but it helps support linker relaxation that
|
||||
changes the code offsets. */
|
||||
|
||||
static void
|
||||
out_fixed_inc_line_addr (int line_delta, symbolS *to_sym, symbolS *from_sym)
|
||||
{
|
||||
expressionS expr;
|
||||
|
||||
/* INT_MAX is a signal that this is actually a DW_LNE_end_sequence. */
|
||||
if (line_delta == INT_MAX)
|
||||
{
|
||||
out_opcode (DW_LNS_fixed_advance_pc);
|
||||
expr.X_op = O_subtract;
|
||||
expr.X_add_symbol = to_sym;
|
||||
expr.X_op_symbol = from_sym;
|
||||
expr.X_add_number = 0;
|
||||
emit_expr (&expr, 2);
|
||||
|
||||
out_opcode (DW_LNS_extended_op);
|
||||
out_byte (1);
|
||||
out_opcode (DW_LNE_end_sequence);
|
||||
return;
|
||||
}
|
||||
|
||||
out_opcode (DW_LNS_advance_line);
|
||||
out_sleb128 (line_delta);
|
||||
|
||||
out_opcode (DW_LNS_fixed_advance_pc);
|
||||
expr.X_op = O_subtract;
|
||||
expr.X_add_symbol = to_sym;
|
||||
expr.X_op_symbol = from_sym;
|
||||
expr.X_add_number = 0;
|
||||
emit_expr (&expr, 2);
|
||||
|
||||
out_opcode (DW_LNS_copy);
|
||||
}
|
||||
|
||||
/* Generate a variant frag that we can use to relax address/line
|
||||
increments between fragments of the target segment. */
|
||||
|
||||
@ -1127,6 +1183,8 @@ process_entries (segT seg, struct line_entry *e)
|
||||
out_set_addr (lab);
|
||||
out_inc_line_addr (line_delta, 0);
|
||||
}
|
||||
else if (DWARF2_USE_FIXED_ADVANCE_PC)
|
||||
out_fixed_inc_line_addr (line_delta, lab, last_lab);
|
||||
else if (frag == last_frag)
|
||||
out_inc_line_addr (line_delta, frag_ofs - last_frag_ofs);
|
||||
else
|
||||
@ -1146,7 +1204,12 @@ process_entries (segT seg, struct line_entry *e)
|
||||
/* Emit a DW_LNE_end_sequence for the end of the section. */
|
||||
frag = last_frag_for_seg (seg);
|
||||
frag_ofs = get_frag_fix (frag, seg);
|
||||
if (frag == last_frag)
|
||||
if (DWARF2_USE_FIXED_ADVANCE_PC)
|
||||
{
|
||||
lab = symbol_temp_new (seg, frag_ofs, frag);
|
||||
out_fixed_inc_line_addr (INT_MAX, lab, last_lab);
|
||||
}
|
||||
else if (frag == last_frag)
|
||||
out_inc_line_addr (INT_MAX, frag_ofs - last_frag_ofs);
|
||||
else
|
||||
{
|
||||
|
||||
@ -1,3 +1,8 @@
|
||||
2006-08-08 Bob Wilson <bob.wilson@acm.org>
|
||||
|
||||
* gas/lns/lns-common-1-alt.d: New file.
|
||||
* gas/lns/lns.exp: Use lns-common-1-alt.d for xtensa targets.
|
||||
|
||||
2006-08-04 Pedro Alves <pedro_alves@portugalmail.pt>
|
||||
|
||||
* gas/arm/wince.s: New test.
|
||||
|
||||
39
gas/testsuite/gas/lns/lns-common-1-alt.d
Normal file
39
gas/testsuite/gas/lns/lns-common-1-alt.d
Normal file
@ -0,0 +1,39 @@
|
||||
#source: lns-common-1.s
|
||||
#readelf: -wl
|
||||
#name: lns-common-1
|
||||
Dump of debug contents of section \.debug_line:
|
||||
#...
|
||||
Initial value of 'is_stmt': 1
|
||||
#...
|
||||
Line Number Statements:
|
||||
Extended opcode 2: set Address to .*
|
||||
Copy
|
||||
Set column to 3
|
||||
Advance Line by 1 to 2
|
||||
Advance PC by fixed size amount .* to .*
|
||||
Copy
|
||||
Set prologue_end to true
|
||||
Advance Line by 1 to 3
|
||||
Advance PC by fixed size amount .* to .*
|
||||
Copy
|
||||
Set column to 0
|
||||
Set epilogue_begin to true
|
||||
Advance Line by 1 to 4
|
||||
Advance PC by fixed size amount .* to .*
|
||||
Copy
|
||||
Set ISA to 1
|
||||
Set basic block
|
||||
Advance Line by 1 to 5
|
||||
Advance PC by fixed size amount .* to .*
|
||||
Copy
|
||||
Set is_stmt to 0
|
||||
Advance Line by 1 to 6
|
||||
Advance PC by fixed size amount .* to .*
|
||||
Copy
|
||||
Set is_stmt to 1
|
||||
Advance Line by 1 to 7
|
||||
Advance PC by fixed size amount .* to .*
|
||||
Copy
|
||||
Advance PC by fixed size amount .* to .*
|
||||
Extended opcode 1: End of Sequence
|
||||
#...
|
||||
@ -23,5 +23,10 @@ run_list_test "lns-diag-1" ""
|
||||
# defined a macro...
|
||||
if { ![istarget ia64*-*-*] && ![istarget i370-*-*] && ![istarget i960-*-*]
|
||||
&& ![istarget or32-*-*] && ![istarget s390*-*-*] } {
|
||||
run_dump_test "lns-common-1"
|
||||
# Use alternate file for targets using DW_LNS_fixed_advance_pc opcodes.
|
||||
if { [istarget xtensa-*-*] } {
|
||||
run_dump_test "lns-common-1-alt"
|
||||
} else {
|
||||
run_dump_test "lns-common-1"
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user