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-rw-r--r--ld/ChangeLog15
-rw-r--r--ld/NEWS2
-rw-r--r--ld/emultempl/elf32.em46
-rw-r--r--ld/testsuite/ld-elf/elf.exp21
-rw-r--r--ld/testsuite/ld-elf/mbind1.s43
-rw-r--r--ld/testsuite/ld-elf/mbind1a.d44
-rw-r--r--ld/testsuite/ld-elf/mbind1b.d44
-rw-r--r--ld/testsuite/ld-elf/mbind1c.d44
-rw-r--r--ld/testsuite/ld-elf/mbind2a.s15
-rw-r--r--ld/testsuite/ld-elf/mbind2b.c17
10 files changed, 290 insertions, 1 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog
index c3490a5..c9298e9 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,18 @@
+2017-04-04 H.J. Lu <hongjiu.lu@intel.com>
+
+ * NEWS: Mention support for ELF SHF_GNU_MBIND and
+ PT_GNU_MBIND_XXX.
+ * emultempl/elf32.em (gld${EMULATION_NAME}_place_orphan): Place
+ input GNU_MBIND sections with the same type, attributes and
+ sh_info field into a single output GNU_MBIND section.
+ * testsuite/ld-elf/elf.exp: Run mbind2a and mbind2b.
+ * testsuite/ld-elf/mbind1.s: New file.
+ * testsuite/ld-elf/mbind1a.d: Likewise.
+ * testsuite/ld-elf/mbind1b.d: Likewise.
+ * testsuite/ld-elf/mbind1c.d: Likewise.
+ * testsuite/ld-elf/mbind2a.s: Likewise.
+ * testsuite/ld-elf/mbind2b.c: Likewise.
+
2017-04-03 H.J. Lu <hongjiu.lu@intel.com>
* NEWS: Mention support for ELF GNU program properties.
diff --git a/ld/NEWS b/ld/NEWS
index 039a90e..52daa6b 100644
--- a/ld/NEWS
+++ b/ld/NEWS
@@ -1,5 +1,7 @@
-*- text -*-
+* Add support for ELF SHF_GNU_MBIND and PT_GNU_MBIND_XXX.
+
* Add support for ELF GNU program properties.
* Add support for the Texas Instruments PRU processor.
diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em
index 007e48d..3442c95 100644
--- a/ld/emultempl/elf32.em
+++ b/ld/emultempl/elf32.em
@@ -2093,6 +2093,47 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
}
}
+ if (!bfd_link_relocatable (&link_info)
+ && (s->flags & SEC_ALLOC) != 0
+ && (elf_section_flags (s) & SHF_GNU_MBIND) != 0)
+ {
+ /* Find the output mbind section with the same type, attributes
+ and sh_info field. */
+ for (os = &lang_output_section_statement.head->output_section_statement;
+ os != NULL;
+ os = os->next)
+ if (os->bfd_section != NULL
+ && !bfd_is_abs_section (os->bfd_section)
+ && (elf_section_flags (os->bfd_section) & SHF_GNU_MBIND) != 0
+ && ((s->flags & (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_READONLY
+ | SEC_CODE))
+ == (os->bfd_section->flags & (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_READONLY
+ | SEC_CODE)))
+ && (elf_section_data (os->bfd_section)->this_hdr.sh_info
+ == elf_section_data (s)->this_hdr.sh_info))
+ {
+ lang_add_section (&os->children, s, NULL, os);
+ return os;
+ }
+
+ /* Create the output mbind section with the ".mbind." prefix
+ in section name. */
+ if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
+ secname = ".mbind.bss";
+ else if ((s->flags & SEC_READONLY) == 0)
+ secname = ".mbind.data";
+ else if ((s->flags & SEC_CODE) == 0)
+ secname = ".mbind.rodata";
+ else
+ secname = ".mbind.text";
+ }
+
/* Look through the script to see where to place this section. */
if (constraint == 0)
for (os = lang_output_section_find (secname);
@@ -2105,8 +2146,11 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
/* SEC_EXCLUDE is cleared when doing a relocatable link. But
we can't merge 2 input sections with the same name when only
- one of them has SHF_EXCLUDE. */
+ one of them has SHF_EXCLUDE. Don't merge 2 sections with
+ different sh_info. */
if (os->bfd_section != NULL
+ && (elf_section_data (os->bfd_section)->this_hdr.sh_info
+ == elf_section_data (s)->this_hdr.sh_info)
&& (os->bfd_section->flags == 0
|| ((!bfd_link_relocatable (&link_info)
|| (iself && (((elf_section_flags (s)
diff --git a/ld/testsuite/ld-elf/elf.exp b/ld/testsuite/ld-elf/elf.exp
index 09c9dda..f889070 100644
--- a/ld/testsuite/ld-elf/elf.exp
+++ b/ld/testsuite/ld-elf/elf.exp
@@ -298,6 +298,27 @@ if { [istarget *-*-linux*]
|| [istarget *-*-nacl*]
|| [istarget *-*-gnu*] } {
run_ld_link_exec_tests $array_tests_pie $xfails
+
+ run_ld_link_exec_tests [list \
+ [list \
+ "Run mbind2a" \
+ "$NOPIE_LDFLAGS -Wl,-z,common-page-size=0x4000" \
+ "" \
+ { mbind2a.s mbind2b.c } \
+ "mbind2a" \
+ "pass.out" \
+ "-O2 -I../bfd" \
+ ] \
+ [list \
+ "Run mbind2b" \
+ "-static -Wl,-z,common-page-size=0x4000" \
+ "" \
+ { mbind2a.s mbind2b.c } \
+ "mbind2b" \
+ "pass.out" \
+ "-O2 -I../bfd" \
+ ] \
+ ]
}
# <http://www.gnu.org/software/hurd/open_issues/binutils.html#static>
diff --git a/ld/testsuite/ld-elf/mbind1.s b/ld/testsuite/ld-elf/mbind1.s
new file mode 100644
index 0000000..414b9fe
--- /dev/null
+++ b/ld/testsuite/ld-elf/mbind1.s
@@ -0,0 +1,43 @@
+ .text
+ .global start /* Used by SH targets. */
+start:
+ .global _start
+_start:
+ .global __start
+__start:
+ .global main /* Used by HPPA targets. */
+main:
+ .dc.a 0
+ .section .mbind.data,"adw",%progbits
+ .byte 1
+
+ .section .mbind.data,"adw",%progbits,0x3
+ .byte 2
+
+ .section .mbind.text,"adx",%progbits
+ .byte 3
+
+ .section .mbind.text,"adx",%progbits,0x3
+ .byte 4
+
+ .section .mbind.bss,"adw",%nobits
+ .zero 5
+
+ .section .mbind.bss,"adw",%nobits,0x3
+ .zero 6
+
+ .section .mbind.rodata,"adG",%progbits,.foo_group,comdat,0x2
+ .byte 7
+
+ .section .mbind.data,"adGw",%progbits,.foo_group,comdat
+ .byte 8
+
+ .section .mbind.data,"adGw",%progbits,.foo_group,comdat,0x3
+ .byte 9
+
+ # Check that .pushsection works as well.
+ .pushsection .mbind.text,"adGx",%progbits,.foo_group,comdat,0x3
+ .byte 10
+
+ .popsection
+ .byte 11
diff --git a/ld/testsuite/ld-elf/mbind1a.d b/ld/testsuite/ld-elf/mbind1a.d
new file mode 100644
index 0000000..aabf781
--- /dev/null
+++ b/ld/testsuite/ld-elf/mbind1a.d
@@ -0,0 +1,44 @@
+#source: mbind1.s
+#ld: -z common-page-size=0x1000 -z max-page-size=0x200000
+#readelf: -S -l --wide
+#target: *-*-linux* *-*-gnu*
+
+#...
+ \[[ 0-9]+\] \.mbind\.text[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 AXD 0 0 4096
+ \[[ 0-9]+\] \.mbind\.text[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 AXD 0 3 4096
+ \[[ 0-9]+\] \.mbind\.rodata[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 AD 0 2 4096
+#...
+ \[[ 0-9]+\] \.mbind\.data[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 0 4096
+ \[[ 0-9]+\] \.mbind\.data[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 3 4096
+#...
+ \[[ 0-9]+\] \.mbind\.bss[ ]+NOBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 0 4096
+ \[[ 0-9]+\] \.mbind\.bss[ ]+NOBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 3 4096
+#...
+Program Headers:
+ Type.*
+#...
+ LOAD[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R E 0x200000
+ LOAD[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x200000
+#...
+ GNU_MBIND\+0[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R E 0x1000
+ GNU_MBIND\+0x3[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R E 0x1000
+ GNU_MBIND\+0x2[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R 0x1000
+ GNU_MBIND\+0[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+ GNU_MBIND\+0x3[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+ GNU_MBIND\+0[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+ GNU_MBIND\+0x3[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+#...
+ Section to Segment mapping:
+ Segment Sections...
+#...
+ [0-9]+ .*.text .mbind.text .mbind.text .mbind.rodata .*
+ [0-9]+ .*.mbind.data .mbind.data.* .mbind.bss .mbind.bss .*
+#...
+ [0-9]+ .mbind.text +
+ [0-9]+ .mbind.text +
+ [0-9]+ .mbind.rodata +
+ [0-9]+ .mbind.data +
+ [0-9]+ .mbind.data +
+ [0-9]+ .mbind.bss +
+ [0-9]+ .mbind.bss +
+#pass
diff --git a/ld/testsuite/ld-elf/mbind1b.d b/ld/testsuite/ld-elf/mbind1b.d
new file mode 100644
index 0000000..f161108
--- /dev/null
+++ b/ld/testsuite/ld-elf/mbind1b.d
@@ -0,0 +1,44 @@
+#source: mbind1.s
+#ld: -shared -z common-page-size=0x1000 -z max-page-size=0x200000
+#readelf: -S -l --wide
+#target: *-*-linux* *-*-gnu*
+
+#...
+ \[[ 0-9]+\] \.mbind\.text[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 AXD 0 0 4096
+ \[[ 0-9]+\] \.mbind\.text[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 AXD 0 3 4096
+ \[[ 0-9]+\] \.mbind\.rodata[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 AD 0 2 4096
+#...
+ \[[ 0-9]+\] \.mbind\.data[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 0 4096
+ \[[ 0-9]+\] \.mbind\.data[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 3 4096
+#...
+ \[[ 0-9]+\] \.mbind\.bss[ ]+NOBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 0 4096
+ \[[ 0-9]+\] \.mbind\.bss[ ]+NOBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 3 4096
+#...
+Program Headers:
+ Type.*
+#...
+ LOAD[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R E 0x200000
+ LOAD[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x200000
+#...
+ GNU_MBIND\+0[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R E 0x1000
+ GNU_MBIND\+0x3[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R E 0x1000
+ GNU_MBIND\+0x2[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R 0x1000
+ GNU_MBIND\+0[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+ GNU_MBIND\+0x3[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+ GNU_MBIND\+0[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+ GNU_MBIND\+0x3[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+#...
+ Section to Segment mapping:
+ Segment Sections...
+#...
+ [0-9]+ .*.text .mbind.text .mbind.text .mbind.rodata .*
+ [0-9]+ .*.mbind.data .mbind.data.* .mbind.bss .mbind.bss .*
+#...
+ [0-9]+ .mbind.text +
+ [0-9]+ .mbind.text +
+ [0-9]+ .mbind.rodata +
+ [0-9]+ .mbind.data +
+ [0-9]+ .mbind.data +
+ [0-9]+ .mbind.bss +
+ [0-9]+ .mbind.bss +
+#pass
diff --git a/ld/testsuite/ld-elf/mbind1c.d b/ld/testsuite/ld-elf/mbind1c.d
new file mode 100644
index 0000000..1348d0c
--- /dev/null
+++ b/ld/testsuite/ld-elf/mbind1c.d
@@ -0,0 +1,44 @@
+#source: mbind1.s
+#ld: -pie -z common-page-size=0x1000 -z max-page-size=0x200000
+#readelf: -S -l --wide
+#target: *-*-linux* *-*-gnu*
+
+#...
+ \[[ 0-9]+\] \.mbind\.text[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 AXD 0 0 4096
+ \[[ 0-9]+\] \.mbind\.text[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 AXD 0 3 4096
+ \[[ 0-9]+\] \.mbind\.rodata[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 AD 0 2 4096
+#...
+ \[[ 0-9]+\] \.mbind\.data[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 0 4096
+ \[[ 0-9]+\] \.mbind\.data[ ]+PROGBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 3 4096
+#...
+ \[[ 0-9]+\] \.mbind\.bss[ ]+NOBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 0 4096
+ \[[ 0-9]+\] \.mbind\.bss[ ]+NOBITS[ ]+[0-9a-f]+ [0-9a-f]+ [0-9a-f]+ 00 WAD 0 3 4096
+#...
+Program Headers:
+ Type.*
+#...
+ LOAD[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R E 0x200000
+ LOAD[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x200000
+#...
+ GNU_MBIND\+0[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R E 0x1000
+ GNU_MBIND\+0x3[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R E 0x1000
+ GNU_MBIND\+0x2[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ R 0x1000
+ GNU_MBIND\+0[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+ GNU_MBIND\+0x3[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+ GNU_MBIND\+0[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+ GNU_MBIND\+0x3[ \t]+0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ 0x[0-9a-f]+ RW 0x1000
+#...
+ Section to Segment mapping:
+ Segment Sections...
+#...
+ [0-9]+ .*.text .mbind.text .mbind.text .mbind.rodata .*
+ [0-9]+ .*.mbind.data .mbind.data.* .mbind.bss .mbind.bss .*
+#...
+ [0-9]+ .mbind.text +
+ [0-9]+ .mbind.text +
+ [0-9]+ .mbind.rodata +
+ [0-9]+ .mbind.data +
+ [0-9]+ .mbind.data +
+ [0-9]+ .mbind.bss +
+ [0-9]+ .mbind.bss +
+#pass
diff --git a/ld/testsuite/ld-elf/mbind2a.s b/ld/testsuite/ld-elf/mbind2a.s
new file mode 100644
index 0000000..2da9792
--- /dev/null
+++ b/ld/testsuite/ld-elf/mbind2a.s
@@ -0,0 +1,15 @@
+/* Place bss_in_mbind0 in .mbind.bss section with sh_info == 0. */
+ .globl bss_in_mbind0
+ .section .mbind.bss,"adw",@nobits,0
+ .type bss_in_mbind0, @object
+ .size bss_in_mbind0, 1
+bss_in_mbind0:
+ .zero 1
+
+/* Place data_in_mbind3 in .mbind.data section with sh_info == 3. */
+ .globl data_in_mbind3
+ .section .mbind.data,"adw",@progbits,0x3
+ .type data_in_mbind3, @object
+ .size data_in_mbind3, 1
+data_in_mbind3:
+ .byte 0
diff --git a/ld/testsuite/ld-elf/mbind2b.c b/ld/testsuite/ld-elf/mbind2b.c
new file mode 100644
index 0000000..10922a1
--- /dev/null
+++ b/ld/testsuite/ld-elf/mbind2b.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <bfd_stdint.h>
+
+extern char bss_in_mbind0;
+extern char data_in_mbind3;
+
+int
+main (void)
+{
+ if (((intptr_t) &bss_in_mbind0 & (0x4000 - 1)) != 0)
+ abort ();
+ if (((intptr_t) &data_in_mbind3 & (0x4000 - 1)) != 0)
+ abort ();
+ printf ("PASS\n");
+ return 0;
+}
generated by cgit v1.1 at 2024-12-11 09:11:31 +0000