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x86: Force relocation against local absolute symbol 

Define TC_FORCE_RELOCATION_ABS to force relocation against local
absolute symbol.

	PR gas/25756
	* config/tc-i386.h (TC_FORCE_RELOCATION_ABS): New.
	* testsuite/gas/i386/localpic.s: Add a test for relocation
	against local absolute symbol.
	* testsuite/gas/i386/x86-64-localpic.s: Likewise.
	* testsuite/gas/i386/localpic.d: Updated.
	* testsuite/gas/i386/x86-64-localpic.d: Likewise.
	* testsuite/gas/i386/ilp32/x86-64-localpic.d: Likewise.
This commit is contained in:
H.J. Lu 2020-04-01 05:40:45 -07:00
parent 15d47c3a70
commit efc3a95039
7 changed files with 32 additions and 3 deletions
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11
gas/ChangeLog
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@ -1,3 +1,14 @@
2020-04-01 H.J. Lu <hongjiu.lu@intel.com>
PR gas/25756
* config/tc-i386.h (TC_FORCE_RELOCATION_ABS): New.
* testsuite/gas/i386/localpic.s: Add a test for relocation
against local absolute symbol.
* testsuite/gas/i386/x86-64-localpic.s: Likewise.
* testsuite/gas/i386/localpic.d: Updated.
* testsuite/gas/i386/x86-64-localpic.d: Likewise.
* testsuite/gas/i386/ilp32/x86-64-localpic.d: Likewise.
2020-04-01 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
PR gas/25732

8
gas/config/tc-i386.h
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@ -180,6 +180,14 @@ extern int tc_i386_fix_adjustable (struct fix *);
|| (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCRELX \
|| (FIX)->fx_r_type == BFD_RELOC_X86_64_REX_GOTPCRELX)
#define TC_FORCE_RELOCATION_ABS(FIX) \
(TC_FORCE_RELOCATION (FIX) \
|| (FIX)->fx_r_type == BFD_RELOC_386_GOT32 \
|| (FIX)->fx_r_type == BFD_RELOC_386_GOT32X \
|| (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCREL \
|| (FIX)->fx_r_type == BFD_RELOC_X86_64_GOTPCRELX \
|| (FIX)->fx_r_type == BFD_RELOC_X86_64_REX_GOTPCRELX)
extern int i386_parse_name (char *, expressionS *, char *);
#define md_parse_name(s, e, m, c) i386_parse_name (s, e, c)

4
gas/testsuite/gas/i386/ilp32/x86-64-localpic.d
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@ -3,9 +3,11 @@
#readelf: -rsW
#name: x86-64 (ILP32) local PIC
Relocation section '.rela.text' at offset 0x[0-9a-f]+ contains 1 entry:
Relocation section '.rela.text' at offset 0x[0-9a-f]+ contains 2 entries:
+Offset +Info +Type +Sym. Value +Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ R_X86_64_REX_GOTPCRELX +[0-9a-f]+ +foo - 4
[0-9a-f]+ +[0-9a-f]+ R_X86_64_REX_GOTPCRELX +[0-9a-f]+ +bar - 4
#...
+[0-9]+: +[0-9a-f]+ +[0-9a-f]+ +NOTYPE +LOCAL +DEFAULT +[0-9]+ +foo
+[0-9]+: +fffffff0 +[0-9a-f]+ +NOTYPE +LOCAL +DEFAULT +ABS +bar
#pass

4
gas/testsuite/gas/i386/localpic.d
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@ -2,9 +2,11 @@
#readelf: -rs
#name: i386 local PIC
Relocation section '.rel.text' at offset 0x[0-9a-f]+ contains 1 entry:
Relocation section '.rel.text' at offset 0x[0-9a-f]+ contains 2 entries:
Offset Info Type Sym.Value Sym. Name
[0-9a-f]+ +[0-9a-f]+ R_386_GOT32X +[0-9a-f]+ +foo
[0-9a-f]+ +[0-9a-f]+ R_386_GOT32X +[0-9a-f]+ +bar
#...
+[0-9]+: +[0-9a-f]+ +[0-9a-f]+ +NOTYPE +LOCAL +DEFAULT +[0-9]+ +foo
+[0-9]+: +fffffff0 +[0-9a-f]+ +NOTYPE +LOCAL +DEFAULT +ABS +bar
#pass

2
gas/testsuite/gas/i386/localpic.s
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@ -3,3 +3,5 @@ foo:
.long 0
.text
movl foo@GOT(%ecx), %eax
movl bar@GOT(%ecx), %eax
bar = 0xfffffff0

4
gas/testsuite/gas/i386/x86-64-localpic.d
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@ -2,9 +2,11 @@
#readelf: -rsW
#name: x86-64 local PIC
Relocation section '.rela.text' at offset 0x[0-9a-f]+ contains 1 entry:
Relocation section '.rela.text' at offset 0x[0-9a-f]+ contains 2 entries:
+Offset +Info +Type +Symbol's Value +Symbol's Name \+ Addend
[0-9a-f]+ +[0-9a-f]+ R_X86_64_REX_GOTPCRELX +[0-9a-f]+ +foo - 4
[0-9a-f]+ +[0-9a-f]+ R_X86_64_REX_GOTPCRELX +[0-9a-f]+ +bar - 4
#...
+[0-9]+: +[0-9a-f]+ +[0-9a-f]+ +NOTYPE +LOCAL +DEFAULT +[0-9]+ +foo
+[0-9]+: +0+fffffff0 +[0-9a-f]+ +NOTYPE +LOCAL +DEFAULT +ABS +bar
#pass

2
gas/testsuite/gas/i386/x86-64-localpic.s
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@ -2,3 +2,5 @@
foo:
.quad 0
movq foo@GOTPCREL(%rip), %rax
movq bar@GOTPCREL(%rip), %rax
bar = 0xfffffff0