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gas/ChangeLog:
* NEWS: Mention new feature. * config/obj-coff.c (obj_coff_section): Accept digits and use to override default section alignment power if specified. * doc/as.texinfo (.section directive): Update documentation. gas/testsuite/ChangeLog: * gas/pe/section-align-1.s: New test source file. * gas/pe/section-align-1.d: Likewise control script. * gas/pe/section-align-2.s: Likewise ... * gas/pe/section-align-2.d: ... and likewise. * gas/pe/pe.exp: Invoke new testcases.
This commit is contained in:
Dave Korn
parent
40b27cdc59
commit
31907d5e90
@ -1,3 +1,10 @@
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2010-01-27 Dave Korn <dave.korn.cygwin@gmail.com>
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* NEWS: Mention new feature.
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* config/obj-coff.c (obj_coff_section): Accept digits and use
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to override default section alignment power if specified.
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* doc/as.texinfo (.section directive): Update documentation.
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2010-01-27 H.J. Lu <hongjiu.lu@intel.com>
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* config/tc-i386.c (avxscalar): New.
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5
gas/NEWS
5
gas/NEWS
@ -1,5 +1,10 @@
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-*- text -*-
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* GAS now understands an extended syntax in the .section directive flags
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for COFF targets that allows the section's alignment to be specified. This
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feature has also been backported to the 2.20 release series, starting with
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2.20.1.
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* Add support for the Renesas RX processor.
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Changes in 2.20:
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@ -23,6 +23,7 @@
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#define OBJ_HEADER "obj-coff.h"
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#include "as.h"
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#include "safe-ctype.h"
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#include "obstack.h"
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#include "subsegs.h"
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@ -1540,6 +1541,7 @@ coff_frob_file_after_relocs (void)
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'r' for read-only data
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's' for shared data (PE)
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'y' for noread
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'0' - '9' for power-of-two alignment (GNU extension).
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But if the argument is not a quoted string, treat it as a
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subsegment number.
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@ -1552,6 +1554,7 @@ obj_coff_section (int ignore ATTRIBUTE_UNUSED)
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/* Strip out the section name. */
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char *section_name;
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char c;
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int alignment = -1;
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char *name;
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unsigned int exp;
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flagword flags, oldflags;
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@ -1594,6 +1597,11 @@ obj_coff_section (int ignore ATTRIBUTE_UNUSED)
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attr != '"'
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&& ! is_end_of_line[attr])
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{
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if (ISDIGIT (attr))
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{
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alignment = attr - '0';
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continue;
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}
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switch (attr)
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{
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case 'b':
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@ -1670,6 +1678,8 @@ obj_coff_section (int ignore ATTRIBUTE_UNUSED)
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}
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sec = subseg_new (name, (subsegT) exp);
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if (alignment >= 0)
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sec->alignment_power = alignment;
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oldflags = bfd_get_section_flags (stdoutput, sec);
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if (oldflags == SEC_NO_FLAGS)
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@ -5768,6 +5768,8 @@ shared section (meaningful for PE targets)
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ignored. (For compatibility with the ELF version)
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@item y
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section is not readable (meaningful for PE targets)
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@item 0-9
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single-digit power-of-two section alignment (GNU extension)
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@end table
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If no flags are specified, the default flags depend upon the section name. If
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@ -1,3 +1,11 @@
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2010-01-27 Dave Korn <dave.korn.cygwin@gmail.com>
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* gas/pe/section-align-1.s: New test source file.
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* gas/pe/section-align-1.d: Likewise control script.
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* gas/pe/section-align-2.s: Likewise ...
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* gas/pe/section-align-2.d: ... and likewise.
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* gas/pe/pe.exp: Invoke new testcases.
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2010-01-27 H.J. Lu <hongjiu.lu@intel.com>
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* gas/i386/avx-scalar-intel.d: New.
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@ -32,3 +32,6 @@ run_dump_test "aligncomm-a"
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run_dump_test "aligncomm-b"
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run_dump_test "aligncomm-c"
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run_dump_test "aligncomm-d"
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run_dump_test "section-align-1"
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run_dump_test "section-align-3"
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29
gas/testsuite/gas/pe/section-align-1.d
Normal file
29
gas/testsuite/gas/pe/section-align-1.d
Normal file
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#objdump: -h
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#name: section alignment
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# Test that alignment works in .section directives.
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.*: .*
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Sections:
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Idx Name *Size *VMA *LMA *File off *Algn
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0 \.text 0*0000000 0*0000000 0*0000000 0*0000000 2\*\*[24]
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ALLOC, LOAD, READONLY, CODE
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1 \.data 0*0000000 0*0000000 0*0000000 0*0000000 2\*\*[24]
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ALLOC, LOAD, DATA
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2 \.bss 0*0000000 0*0000000 0*0000000 0*0000000 2\*\*[24]
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ALLOC
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3 \.none 0*0000000 0*0000000 0*0000000 0*0000000 2\*\*0
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ALLOC, LOAD, READONLY, DATA
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4 \.zero 0*0000000 0*0000000 0*0000000 0*0000000 2\*\*0
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ALLOC, LOAD, READONLY, DATA
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5 \.one 0*0000001 0*0000000 0*0000000 0*00001a4 2\*\*0
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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6 \.two 0*0000002 0*0000000 0*0000000 0*00001a5 2\*\*0
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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7 \.three 0*0000003 0*0000000 0*0000000 0*00001a7 2\*\*0
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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8 \.four 0*0000004 0*0000000 0*0000000 0*00001aa 2\*\*0
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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9 \.five 0*0000005 0*0000000 0*0000000 0*00001ae 2\*\*0
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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15
gas/testsuite/gas/pe/section-align-1.s
Normal file
15
gas/testsuite/gas/pe/section-align-1.s
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@ -0,0 +1,15 @@
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.section .none,"dr0"
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.section .zero,"dr0"
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.ascii ""
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.section .one,"dr0"
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.ascii "1"
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.section .two,"dr0"
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.ascii "12"
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.section .three,"dr0"
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.ascii "123"
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.section .four,"dr0"
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.ascii "1234"
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.section .five,"dr0"
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.ascii "12345"
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.end
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39
gas/testsuite/gas/pe/section-align-3.d
Normal file
39
gas/testsuite/gas/pe/section-align-3.d
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#objdump: -h
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#name: section alignment
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# Test that alignment works in .section directives.
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.*: .*
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Sections:
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Idx Name *Size *VMA *LMA *File off *Algn
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0 \.text 0*0000000 0*0000000 0*0000000 0*0000000 2\*\*[24]
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ALLOC, LOAD, READONLY, CODE
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1 \.data 0*0000000 0*0000000 0*0000000 0*0000000 2\*\*[24]
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ALLOC, LOAD, DATA
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2 \.bss 0*0000000 0*0000000 0*0000000 0*0000000 2\*\*[24]
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ALLOC
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3 \.none 0*0000000 0*0000000 0*0000000 0*0000000 2\*\*3
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ALLOC, LOAD, READONLY, DATA
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4 \.zero 0*0000000 0*0000000 0*0000000 0*0000000 2\*\*3
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ALLOC, LOAD, READONLY, DATA
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5 \.one 0*0000008 0*0000000 0*0000000 0*000026c 2\*\*3
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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6 \.two 0*0000008 0*0000000 0*0000000 0*0000274 2\*\*3
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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7 \.three 0*0000008 0*0000000 0*0000000 0*000027c 2\*\*3
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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8 \.four 0*0000008 0*0000000 0*0000000 0*0000284 2\*\*3
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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9 \.five 0*0000008 0*0000000 0*0000000 0*000028c 2\*\*3
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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10 \.six 0*0000008 0*0000000 0*0000000 0*0000294 2\*\*3
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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11 \.seven 0*0000008 0*0000000 0*0000000 0*000029c 2\*\*3
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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12 \.eight 0*0000008 0*0000000 0*0000000 0*00002a4 2\*\*3
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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13 \.nine 0*0000010 0*0000000 0*0000000 0*00002ac 2\*\*3
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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14 \.ten 0*0000010 0*0000000 0*0000000 0*00002bc 2\*\*3
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CONTENTS, ALLOC, LOAD, READONLY, DATA
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25
gas/testsuite/gas/pe/section-align-3.s
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25
gas/testsuite/gas/pe/section-align-3.s
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@ -0,0 +1,25 @@
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.section .none,"dr3"
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.section .zero,"dr3"
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.ascii ""
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.section .one,"dr3"
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.ascii "1"
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.section .two,"dr3"
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.ascii "12"
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.section .three,"dr3"
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.ascii "123"
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.section .four,"dr3"
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.ascii "1234"
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.section .five,"dr3"
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.ascii "12345"
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.section .six,"dr3"
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.ascii "123456"
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.section .seven,"dr3"
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.ascii "1234567"
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.section .eight,"dr3"
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.ascii "12345678"
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.section .nine,"dr3"
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.ascii "123456789"
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.section .ten,"dr3"
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.ascii "1234567890"
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.end
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