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Really fix riscv shared library __global_pointer$ problem.

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ld/
	* emulparams/elf32lriscv-defs.sh (SDATA_START_SYMBOLS): Remove HIDDEN.
	Don't define __global_pointer$ when CREATE_SHLIB.
	* testsuite/ld-riscv-elf/gp-hidden-64.rd,
	* testsuite/ld-riscv-elf/gp-hidden-lib.rd,
	* testsuite/ld-riscv-elf/gp-hidden-lib.s,
	* testsuite/ld-riscv-elf/gp-hidden-ver-64.rd,
	* testsuite/ld-riscv-elf/gp-hidden-ver.rd,
	* testsuite/ld-riscv-elf/gp-hidden-ver.s,
	* testsuite/ld-riscv-elf/gp-hidden-ver.ver,
	* testsuite/ld-riscv-elf/gp-hidden.rd,
	* testsuite/ld-riscv-elf/gp-hidden.s,
	* testsuite/ld-riscv-elf/gp-hidden.sd: Delete.
	* testsuite/ld-riscv-elf/gp-test-lib.sd,
	* testsuite/ld-riscv-elf/gp-test.s,
	* testsuite/ld-riscv-elf/gp-test.sd: New.
	* testsuite/ld-riscv-elf/ld-riscv-elf.exp: Rewrite gp tests.
This commit is contained in:
Jim Wilson 2017-12-05 14:42:12 -08:00
parent 858c9d1324
commit 0527614a9b
14 changed files with 43 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
ld/ChangeLog
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@ -1,3 +1,23 @@
2017-12-05 Jim Wilson <jimw@sifive.com>
Andrew Waterman <andrew@sifive.com>
* emulparams/elf32lriscv-defs.sh (SDATA_START_SYMBOLS): Remove HIDDEN.
Don't define __global_pointer$ when CREATE_SHLIB.
* testsuite/ld-riscv-elf/gp-hidden-64.rd,
* testsuite/ld-riscv-elf/gp-hidden-lib.rd,
* testsuite/ld-riscv-elf/gp-hidden-lib.s,
* testsuite/ld-riscv-elf/gp-hidden-ver-64.rd,
* testsuite/ld-riscv-elf/gp-hidden-ver.rd,
* testsuite/ld-riscv-elf/gp-hidden-ver.s,
* testsuite/ld-riscv-elf/gp-hidden-ver.ver,
* testsuite/ld-riscv-elf/gp-hidden.rd,
* testsuite/ld-riscv-elf/gp-hidden.s,
* testsuite/ld-riscv-elf/gp-hidden.sd: Delete.
* testsuite/ld-riscv-elf/gp-test-lib.sd,
* testsuite/ld-riscv-elf/gp-test.s,
* testsuite/ld-riscv-elf/gp-test.sd: New.
* testsuite/ld-riscv-elf/ld-riscv-elf.exp: Rewrite gp tests.
2017-12-04 Jim Wilson <jimw@sifive.com>
* emulparams/elf32lriscv-defs.sh (SDATA_START_SYMBOLS): Mark

3
ld/emulparams/elf32lriscv-defs.sh
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@ -23,7 +23,8 @@ TEXT_START_ADDR=0x10000
MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
COMMONPAGESIZE="CONSTANT (COMMONPAGESIZE)"
SDATA_START_SYMBOLS="HIDDEN (__global_pointer$ = . + 0x800);
SDATA_START_SYMBOLS="__global_pointer$ = . + 0x800;"
SDATA_START_SYMBOLS="${CREATE_SHLIB-${SDATA_START_SYMBOLS}}
*(.srodata.cst16) *(.srodata.cst8) *(.srodata.cst4) *(.srodata.cst2) *(.srodata .srodata.*)"
INITIAL_READONLY_SECTIONS=".interp : { *(.interp) } ${CREATE_PIE-${INITIAL_READONLY_SECTIONS}}"

4
ld/testsuite/ld-riscv-elf/gp-hidden-64.rd
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@ -1,4 +0,0 @@
Relocation section '\.rela\.dyn' at offset .* contains 1 entry:
*Offset * Info * Type * Sym\. *Value * Sym\. *Name \+ Addend
[0-9a-f]+ * [0-9a-f]+02 * R_RISCV_64 * [0-9a-f]+ * foo \+ 0

5
ld/testsuite/ld-riscv-elf/gp-hidden-lib.rd
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@ -1,5 +0,0 @@
Relocation section '\.rela\.dyn' at offset .* contains 1 entry:
*Offset * Info * Type * Sym\. *Value * Sym\. *Name \+ Addend
# This must be an absolute relocation, there must not be a _gp reference.
[0-9a-f]+ * 0+03 * R_RISCV_RELATIVE * [0-9a-f]+

6
ld/testsuite/ld-riscv-elf/gp-hidden-lib.s
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@ -1,6 +0,0 @@
.data
.globl bar
.type bar, @object
bar:
.dc.a __global_pointer$
.size bar, . - bar

6
ld/testsuite/ld-riscv-elf/gp-hidden-ver-64.rd
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@ -1,6 +0,0 @@
Relocation section '\.rela\.dyn' at offset .* contains 2 entries:
*Offset * Info * Type * Sym\. *Value * Sym\. *Name \+ Addend
# This must be an absolute relocation, there must not be a _gp reference.
[0-9a-f]+ * 0+03 * R_RISCV_RELATIVE * [0-9a-f]+
[0-9a-f]+ * [0-9a-f]+02 * R_RISCV_64 * [0-9a-f]+ * bar \+ 0

6
ld/testsuite/ld-riscv-elf/gp-hidden-ver.rd
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@ -1,6 +0,0 @@
Relocation section '\.rela\.dyn' at offset .* contains 2 entries:
*Offset * Info * Type * Sym\. *Value * Sym\. *Name \+ Addend
# This must be an absolute relocation, there must not be a _gp reference.
[0-9a-f]+ * 0+03 * R_RISCV_RELATIVE * [0-9a-f]+
[0-9a-f]+ * [0-9a-f]+01 * R_RISCV_32 * [0-9a-f]+ * bar \+ 0

7
ld/testsuite/ld-riscv-elf/gp-hidden-ver.s
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@ -1,7 +0,0 @@
.data
.globl foo
.type foo, @object
foo:
.dc.a bar
.dc.a __global_pointer$
.size foo, . - foo

1
ld/testsuite/ld-riscv-elf/gp-hidden-ver.ver
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@ -1 +0,0 @@
{ global: foo; local: *; };

4
ld/testsuite/ld-riscv-elf/gp-hidden.rd
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@ -1,4 +0,0 @@
Relocation section '\.rela\.dyn' at offset .* contains 1 entry:
*Offset * Info * Type * Sym\. *Value * Sym\. *Name \+ Addend
[0-9a-f]+ * [0-9a-f]+01 * R_RISCV_32 * [0-9a-f]+ * foo \+ 0

6
ld/testsuite/ld-riscv-elf/gp-hidden.sd → ld/testsuite/ld-riscv-elf/gp-test-lib.sd
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@ -1,9 +1,9 @@
Symbol table '.dynsym' contains [0-9]+ entries:
* Num: * Value * Size * Type * Bind * Vis * Ndx * Name
#...
Symbol table '.symtab' contains [0-9]+ entries:
* Num: * Value * Size * Type * Bind * Vis * Ndx * Name
#failif
#...
* [0-9a-f]+: * [0-9a-f]+ * 0 * NOTYPE * GLOBAL * DEFAULT .* __global_pointer\$
#...
* [0-9a-f]+: * [0-9a-f]+ * 0 * NOTYPE * LOCAL * DEFAULT .* __global_pointer\$
#pass

3
ld/testsuite/ld-riscv-elf/gp-hidden.s → ld/testsuite/ld-riscv-elf/gp-test.s
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@ -2,6 +2,5 @@
.globl blah
.type blah, @object
blah:
.dc.a foo
.dc.a __global_pointer$
.dc.a 0
.size blah, . - blah

5
ld/testsuite/ld-riscv-elf/gp-test.sd Normal file
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@ -0,0 +1,5 @@
Symbol table '.symtab' contains [0-9]+ entries:
* Num: * Value * Size * Type * Bind * Vis * Ndx * Name
#...
* [0-9a-f]+: * [0-9a-f]+ * 0 * NOTYPE * GLOBAL * DEFAULT .* __global_pointer\$
#pass

35
ld/testsuite/ld-riscv-elf/ld-riscv-elf.exp
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@ -24,33 +24,22 @@ if [istarget "riscv*-*-*"] {
set abis { rv32gc ilp32 elf32lriscv rv64gc lp64 elf64lriscv }
foreach { arch abi emul } $abis {
# This checks whether our linker scripts get the scope of
# __global_pointer$ right, and thus must therefore use default scripts.
# This checks whether our linker scripts handle __global_pointer$
# correctly. It should be defined in executables and PIE, but not
# in shared libraries.
set suff64 [string map {ilp32 "" lp64 -64} $abi]
run_ld_link_tests [list \
[list "gp scope test ($abi shared library)" \
[list "gp test ($abi shared library)" \
"-m$emul -shared" "" \
"-march=$arch -mabi=$abi -fpic" \
{ gp-hidden-lib.s } \
[list \
"readelf --relocs gp-hidden-lib.rd" \
"readelf --syms gp-hidden.sd"] \
"gp-hidden-lib-${abi}.so"] \
[list "gp scope test ($abi versioned lib)" \
"-m$emul -shared -version-script gp-hidden-ver.ver tmpdir/gp-hidden-lib-${abi}.so" "" \
"-march=$arch -mabi=$abi -fpic" \
{ gp-hidden-ver.s } \
[list \
"readelf --relocs gp-hidden-ver${suff64}.rd" \
"readelf --syms gp-hidden.sd"] \
"gp-hidden-ver-${abi}.so"] \
[list "gp scope test ($abi executable)" \
"-m$emul -e 0 -rpath-link . tmpdir/gp-hidden-ver-${abi}.so" "" \
{ gp-test.s } \
[list "readelf --syms gp-test-lib.sd"] \
"gp-test-lib-${abi}.so"] \
[list "gp test ($abi executable)" \
"-m$emul" "" \
"-march=$arch -mabi=$abi" \
{gp-hidden.s} \
[list \
"readelf --relocs gp-hidden${suff64}.rd" \
"readelf --syms gp-hidden.sd"]\
"gp-hidden-${abi}"]]
{ gp-test.s } \
[list "readelf --syms gp-test.sd"] \
"gp-test-${abi}"]]
}
}