(dwarf2_set_isa): New.
(dwarf2_directive_loc): Rearrange to allow all options on one line.
* dwarf2dbg.h (dwarf2_set_isa): Declare.
* doc/as.texinfo: Update .loc documentation.
* gas/lns/lns-common-1.d: Don't match header or special opcode numbers.
* gas/lns/lns-common-1.s: Update for syntax change.
* gas/lns/lns-diag-1.[sl]: Likewise.
2005-09-07 Richard Henderson <rth@redhat.com>
+ * dwarf2dbg.c (dwarf2_where): Set line->isa.
+ (dwarf2_set_isa): New.
+ (dwarf2_directive_loc): Rearrange to allow all options on one line.
+ * dwarf2dbg.h (dwarf2_set_isa): Declare.
+ * doc/as.texinfo: Update .loc documentation.
+
+2005-09-07 Richard Henderson <rth@redhat.com>
+
* dwarf2dbg.c: Include safe-ctype.h.
(DWARF2_LINE_OPCODE_BASE): Bump to 13.
(current): Initialize.
information, and thus the user must know the exact indicies that table
entries will have.
-@section @code{.loc @var{fileno} @var{lineno} [@var{column}]}
+@section @code{.loc @var{fileno} @var{lineno} [@var{column}] [@var{options}]}
@cindex @code{loc} directive
The @code{.loc} directive will add row to the @code{.debug_line} line
number matrix corresponding to the immediately following assembly
arguments will be applied to the @code{.debug_line} state machine before
the row is added.
-@section @code{.loc basic_block}
-This directive will set the @code{basic_block} register in the
+The @var{options} are a sequence of the following tokens in any order:
+
+@table @code
+@item basic_block
+This option will set the @code{basic_block} register in the
@code{.debug_line} state machine to @code{true}.
-@section @code{.loc prologue_end}
-This directive will set the @code{prologue_end} register in the
+@item prologue_end
+This option will set the @code{prologue_end} register in the
@code{.debug_line} state machine to @code{true}.
-@section @code{.loc epilogue_begin}
-This directive will set the @code{epilogue_begin} register in the
+@item epilogue_begin
+This option will set the @code{epilogue_begin} register in the
@code{.debug_line} state machine to @code{true}.
-@section @code{.loc is_stmt @var{value}}
-This directive will set the @code{epilogue_begin} register in the
+@item is_stmt @var{value}
+This option will set the @code{is_stmt} register in the
@code{.debug_line} state machine to @code{value}, which must be
either 0 or 1.
-@section @code{.loc isa @var{value}}
+@item isa @var{value}
This directive will set the @code{isa} register in the @code{.debug_line}
state machine to @var{value}, which must be an unsigned integer.
+@end table
@node Data
@section @code{.data @var{subsection}}
following directives:
.file FILENO "file.c"
- .loc FILENO LINENO [COLUMN]
- .loc basic_block
- .loc prologue_end
- .loc epilogue_begin
- .loc is_stmt [VALUE]
- .loc isa [VALUE]
+ .loc FILENO LINENO [COLUMN] [basic_block] [prologue_end] \
+ [epilogue_begin] [is_stmt VALUE] [isa VALUE]
*/
#include "ansidecl.h"
ss->ptail = &e->next;
}
+/* Returns the current source information. If .file directives have
+ been encountered, the info for the corresponding source file is
+ returned. Otherwise, the info for the assembly source file is
+ returned. */
+
void
dwarf2_where (struct dwarf2_line_info *line)
{
line->filenum = get_filenum (filename, 0);
line->column = 0;
line->flags = DWARF2_FLAG_IS_STMT;
+ line->isa = current.isa;
}
else
*line = current;
}
+/* A hook to allow the target backend to inform the line number state
+ machine of isa changes when assembler debug info is enabled. */
+
+void
+dwarf2_set_isa (unsigned int isa)
+{
+ current.isa = isa;
+}
+
/* Called for each machine instruction, or relatively atomic group of
machine instructions (ie built-in macro). The instruction or group
is SIZE bytes in length. If dwarf2 line number generation is called
void
dwarf2_directive_loc (int dummy ATTRIBUTE_UNUSED)
{
+ offsetT filenum, line;
+
+ filenum = get_absolute_expression ();
+ SKIP_WHITESPACE ();
+ line = get_absolute_expression ();
+
+ if (filenum < 1)
+ {
+ as_bad (_("file number less than one"));
+ return;
+ }
+ if (filenum >= (int) files_in_use || files[filenum].filename == 0)
+ {
+ as_bad (_("unassigned file number %ld"), (long) filenum);
+ return;
+ }
+
+ current.filenum = filenum;
+ current.line = line;
+
+#ifndef NO_LISTING
+ if (listing)
+ {
+ if (files[filenum].dir)
+ {
+ size_t dir_len = strlen (dirs[files[filenum].dir]);
+ size_t file_len = strlen (files[filenum].filename);
+ char *cp = (char *) alloca (dir_len + 1 + file_len + 1);
+
+ memcpy (cp, dirs[files[filenum].dir], dir_len);
+ cp[dir_len] = '/';
+ memcpy (cp + dir_len + 1, files[filenum].filename, file_len);
+ cp[dir_len + file_len + 1] = '\0';
+ listing_source_file (cp);
+ }
+ else
+ listing_source_file (files[filenum].filename);
+ listing_source_line (line);
+ }
+#endif
+
SKIP_WHITESPACE ();
- if (ISALPHA (*input_line_pointer))
+ if (ISDIGIT (*input_line_pointer))
+ {
+ current.column = get_absolute_expression ();
+ SKIP_WHITESPACE ();
+ }
+
+ while (ISALPHA (*input_line_pointer))
{
char *p, c;
offsetT value;
else if (value == 1)
current.flags |= DWARF2_FLAG_IS_STMT;
else
- as_bad (_("is_stmt value not 0 or 1"));
+ {
+ as_bad (_("is_stmt value not 0 or 1"));
+ return;
+ }
}
else if (strcmp (p, "isa") == 0)
{
*input_line_pointer = c;
value = get_absolute_expression ();
- if (value < 0)
- as_bad (_("isa number less than zero"));
- else
+ if (value >= 0)
current.isa = value;
+ else
+ {
+ as_bad (_("isa number less than zero"));
+ return;
+ }
}
else
{
- as_bad (_("unknown .loc sub-directive %s"), p);
+ as_bad (_("unknown .loc sub-directive `%s'"), p);
*input_line_pointer = c;
- }
- }
- else
- {
- offsetT filenum, line, column;
-
- filenum = get_absolute_expression ();
- SKIP_WHITESPACE ();
- line = get_absolute_expression ();
- SKIP_WHITESPACE ();
- column = get_absolute_expression ();
-
- if (filenum < 1)
- {
- as_bad (_("file number less than one"));
- return;
- }
- if (filenum >= (int) files_in_use || files[filenum].filename == 0)
- {
- as_bad (_("unassigned file number %ld"), (long) filenum);
return;
}
- current.filenum = filenum;
- current.line = line;
- current.column = column;
-
-#ifndef NO_LISTING
- if (listing)
- {
- if (files[filenum].dir)
- {
- size_t dir_len = strlen (dirs[files[filenum].dir]);
- size_t file_len = strlen (files[filenum].filename);
- char *cp = (char *) alloca (dir_len + 1 + file_len + 1);
-
- memcpy (cp, dirs[files[filenum].dir], dir_len);
- cp[dir_len] = '/';
- memcpy (cp + dir_len + 1, files[filenum].filename, file_len);
- cp[dir_len + file_len + 1] = '\0';
- listing_source_file (cp);
- }
- else
- listing_source_file (files[filenum].filename);
- listing_source_line (line);
- }
-#endif
+ SKIP_WHITESPACE ();
}
demand_empty_rest_of_line ();
returned. */
extern void dwarf2_where (struct dwarf2_line_info *l);
+/* A hook to allow the target backend to inform the line number state
+ machine of isa changes when assembler debug info is enabled. */
+extern void dwarf2_set_isa (unsigned int isa);
+
/* This function generates .debug_line info based on the address and
source information passed in the arguments. ADDR should be the
frag-relative offset of the instruction the information is for and
2005-09-07 Richard Henderson <rth@redhat.com>
+ * gas/lns/lns-common-1.d: Don't match header or special opcode numbers.
+ * gas/lns/lns-common-1.s: Update for syntax change.
+ * gas/lns/lns-diag-1.[sl]: Likewise.
+
+2005-09-07 Richard Henderson <rth@redhat.com>
+
* gas/mips/mips16-dwarf2.d: Don't match anything but address and line
number increments. Adjust relocation address.
* gas/mips/mips16-dwarf2-n32.d: Likewise. Add "N32" to test name.
#name: lns-common-1
Dump of debug contents of section \.debug_line:
#...
- DWARF Version: 2
- Prologue Length: 28
- Minimum Instruction Length: 1
Initial value of 'is_stmt': 1
- Line Base: -5
- Line Range: 14
- Opcode Base: 13
#...
Line Number Statements:
- Extended opcode 2: set Address to 0x0
+ Extended opcode 2: set Address to .*
Copy
+ Set column to 3
+ Special opcode .*: advance Address by .* to .* and Line by 1 to 2
Set prologue_end to true
- Special opcode 19: advance Address by .* to .* and Line by 0 to 1
+ Special opcode .*: advance Address by .* to .* and Line by 1 to 3
+ Set column to 0
Set epilogue_begin to true
- Special opcode 20: advance Address by .* to .* and Line by 1 to 2
+ Special opcode .*: advance Address by .* to .* and Line by 1 to 4
Set ISA to 1
Set basic block
- Special opcode 20: advance Address by .* to .* and Line by 1 to 3
+ Special opcode .*: advance Address by .* to .* and Line by 1 to 5
Set is_stmt to 0
- Special opcode 19: advance Address by .* to .* and Line by 0 to 3
+ Special opcode .*: advance Address by .* to .* and Line by 1 to 6
Set is_stmt to 1
- Special opcode 19: advance Address by .* to .* and Line by 0 to 3
+ Special opcode .*: advance Address by .* to .* and Line by 1 to 7
Advance PC by .* to .*
Extended opcode 1: End of Sequence
#...
.file 1 "foo.c"
.loc 1 1
nop
- .loc prologue_end
+ .loc 1 2 3
nop
- .loc epilogue_begin
- .loc 1 2
+ .loc 1 3 prologue_end
nop
- .loc isa 1
- .loc basic_block
- .loc 1 3
+ .loc 1 4 0 epilogue_begin
nop
- .loc is_stmt 0
+ .loc 1 5 isa 1 basic_block
nop
- .loc is_stmt 1
+ .loc 1 6 is_stmt 0
+ nop
+ .loc 1 7 is_stmt 1
nop
.*:18: Error: is_stmt value not 0 or 1
.*:19: Error: bad or irreducible absolute expression
.*:23: Error: isa number less than zero
-.*:26: Error: unknown .loc sub-directive frobnitz
+.*:26: Error: bad or irreducible absolute expression
+.*:26: Error: file number less than one
+.*:27: Error: bad or irreducible absolute expression
+.*:28: Error: unknown .loc sub-directive `frobnitz'
+.*:29: Error: unknown .loc sub-directive `frobnitz'
.loc 3 1
.loc 1 1 1 1
- .loc basic_block
- .loc basic_block 0
- .loc prologue_end
- .loc epilogue_begin
+ .loc 1 1 basic_block
+ .loc 1 1 basic_block 0
+ .loc 1 1 prologue_end
+ .loc 1 1 epilogue_begin
- .loc is_stmt 0
- .loc is_stmt 1
- .loc is_stmt 2
- .loc is_stmt foo
+ .loc 1 1 1 is_stmt 0
+ .loc 1 1 1 is_stmt 1
+ .loc 1 1 1 is_stmt 2
+ .loc 1 1 1 is_stmt foo
- .loc isa 1
- .loc isa 2
- .loc isa -1
- .loc isa 0
+ .loc 1 1 isa 1
+ .loc 1 1 isa 2
+ .loc 1 1 isa -1
+ .loc 1 1 isa 0
.loc frobnitz
+ .loc 1 frobnitz
+ .loc 1 1 frobnitz
+ .loc 1 1 1 frobnitz
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