Add .incbin pseudo op
This commit is contained in:
Nick Clifton
parent
4671219147
commit
7e005732aa
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@ -1,3 +1,11 @@
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2001-07-08 Anders Norlander <anorland@synergenix.se>
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* read.c (s_incbin): New .incbin function.
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* read.c (potable): Add "incbin" pseudo-op.
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* read.h: Add s_incbin prototype.
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* doc/as.texinfo (incbin): Document .incbin pseudo-op.
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* NEWS: Mention new feature.
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2001-07-07 Nick Clifton <nickc@cambridge.redhat.com>
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* ecoff.c (add_file): Only set debug_type to DEBUG_NONE if it is
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3
gas/NEWS
3
gas/NEWS
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@ -1,5 +1,8 @@
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-*- text -*-
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New psuedo op: .incbin to include a set of binary data at a given point
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in the assembly. Contributed by Anders Norlander.
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The MIPS assembler now accepts -march/-mtune. -mcpu has been deprecated
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but still works for compatability.
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@ -3452,6 +3452,7 @@ Some machine configurations provide additional directives.
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* hword:: @code{.hword @var{expressions}}
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* Ident:: @code{.ident}
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* If:: @code{.if @var{absolute expression}}
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* Incbin:: @code{.incbin "@var{file}"[,@var{skip}[,@var{count}]]}
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* Include:: @code{.include "@var{file}"}
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* Int:: @code{.int @var{expressions}}
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@ifset ELF
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@ -4124,6 +4125,21 @@ Like @code{.ifeqs}, but the sense of the test is reversed: this assembles the
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following section of code if the two strings are not the same.
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@end table
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@node Incbin
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@section @code{.incbin "@var{file}"[,@var{skip}[,@var{count}]]}
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@cindex @code{incbin} directive
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@cindex binary files, including
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The @code{incbin} directive includes @var{file} verbatim at the current
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location. You can control the search paths used with the @samp{-I} command-line
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option (@pxref{Invoking,,Command-Line Options}). Quotation marks are required
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around @var{file}.
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The @var{skip} argument skips a number of bytes from the start of the
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@var{file}. The @var{count} argument indicates the maximum number of bytes to
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read. Note that the data from is not aligned in any way, make sure to proper
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alignment is provided before and after the @code{incbin} directive.
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@node Include
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@section @code{.include "@var{file}"}
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116
gas/read.c
116
gas/read.c
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@ -349,6 +349,7 @@ static const pseudo_typeS potable[] = {
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{"ifne", s_if, (int) O_ne},
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{"ifnes", s_ifeqs, 1},
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{"ifnotdef", s_ifdef, 1},
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{"incbin", s_incbin, 0},
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{"include", s_include, 0},
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{"int", cons, 4},
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{"irp", s_irp, 0},
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@ -4900,6 +4901,121 @@ equals (sym_name, reassign)
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}
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}
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/* .incbin -- include a file verbatim at the current location. */
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void
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s_incbin (x)
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int x ATTRIBUTE_UNUSED;
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{
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FILE * binfile;
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char * path;
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char * filename;
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char * binfrag;
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long skip = 0;
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long count = 0;
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long bytes;
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int len;
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#ifdef md_flush_pending_output
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md_flush_pending_output ();
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#endif
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SKIP_WHITESPACE ();
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filename = demand_copy_string (& len);
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if (filename == NULL)
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return;
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SKIP_WHITESPACE ();
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/* Look for optional skip and count. */
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if (* input_line_pointer == ',')
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{
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++ input_line_pointer;
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skip = get_absolute_expression ();
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SKIP_WHITESPACE ();
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if (* input_line_pointer == ',')
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{
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++ input_line_pointer;
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count = get_absolute_expression ();
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if (count == 0)
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as_warn (_(".incbin count zero, ignoring `%s'"), filename);
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SKIP_WHITESPACE ();
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}
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}
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demand_empty_rest_of_line ();
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/* Try opening absolute path first, then try include dirs. */
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binfile = fopen (filename, "rb");
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if (binfile == NULL)
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{
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int i;
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path = xmalloc ((unsigned long) len + include_dir_maxlen + 5);
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for (i = 0; i < include_dir_count; i++)
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{
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sprintf (path, "%s/%s", include_dirs[i], filename);
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binfile = fopen (path, "rb");
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if (binfile != NULL)
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break;
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}
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if (binfile == NULL)
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as_bad (_("file not found: %s"), filename);
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}
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else
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path = xstrdup (filename);
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if (binfile)
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{
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register_dependency (path);
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/* Compute the length of the file. */
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if (fseek (binfile, 0, SEEK_END) != 0)
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{
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as_bad (_("seek to end of .incbin file failed `%s'"), path);
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goto done;
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}
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len = ftell (binfile);
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/* If a count was not specified use the size of the file. */
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if (count == 0)
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count = len;
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if (skip + count > len)
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{
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as_bad (_("skip (%ld) + count (%ld) larger than file size (%ld)"),
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skip, count, len);
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goto done;
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}
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if (fseek (binfile, skip, SEEK_SET) != 0)
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{
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as_bad (_("could not skip to %ld in file `%s'"), skip, path);
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goto done;
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}
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/* Allocate frag space and store file contents in it. */
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binfrag = frag_more (count);
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bytes = fread (binfrag, 1, count, binfile);
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if (bytes < count)
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as_warn (_("truncated file `%s', %ld of %ld bytes read"),
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path, bytes, count);
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}
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done:
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if (binfile != NULL)
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fclose (binfile);
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if (path)
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free (path);
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}
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/* .include -- include a file at this point. */
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void
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@ -181,3 +181,4 @@ extern void s_text PARAMS ((int));
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extern void stringer PARAMS ((int append_zero));
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extern void s_xstab PARAMS ((int what));
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extern void s_rva PARAMS ((int));
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extern void s_incbin PARAMS ((int));
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@ -1,3 +1,9 @@
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2001-07-08 Anders Norlander <anorland@synergenix.se>
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* gas/all/gas.exp: Run incbin test.
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* gas/all/incbin.s: New file.
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* gas/all/incbin.d: New file.
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2001-07-04 Richard Sandiford <rsandifo@redhat.com>
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* gas/mips/elf-rel3.s: Add zero word to end of file.
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@ -156,6 +156,8 @@ if ![istarget *c54x*-*-*] then {
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test_cond
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}
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run_dump_test incbin
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# FIXME: this is here cause of a bug in DejaGnu 1.1.1. When it is no longer
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# in use, then this can be removed.
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if [info exists errorInfo] then {
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@ -0,0 +1,17 @@
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#as: -I$srcdir/$subdir
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#objdump: -s -j .data
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#name: incbin
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# Test the incbin pseudo-op
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.*: .*
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Contents of section .data:
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0000 2e646174 610a2e69 6e636269 6e202269 .data..incbin "i
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0010 6e636269 6e2e7322 0a2e696e 6362696e ncbin.s"..incbin
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0020 2022696e 6362696e 2e73222c 302c3238 "incbin.s",0,28
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0030 0a2e696e 6362696e 2022696e 6362696e ..incbin "incbin
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0040 2e73222c 31352c39 0a2e7032 616c6967 .s",15,9..p2alig
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0050 6e20340a 2e646174 610a2e69 6e636269 n 4..data..incbi
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0060 6e202269 6e636269 6e2e7322 0a2e696e n "incbin.s"..in
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0070 696e6362 696e2e73 22000000 00000000 incbin.s".......
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@ -0,0 +1,5 @@
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.data
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.incbin "incbin.s"
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.incbin "incbin.s",0,28
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.incbin "incbin.s",15,9
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.p2align 4
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