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| author | Jan Beulich <jbeulich@novell.com> | 2017-11-23 11:02:30 +0100 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2017-11-23 11:02:30 +0100 |
| commit | 43083a502b8d658b8d096111e54afcc73b0215a4 (patch) | |
| tree | 0695c73e2bf6e60e243e0afcc023c7ef8fb96359 /ld | |
| parent | 9bb129e82f0506fe78d61670ea2b4140388955dd (diff) | |
| download | gdb-43083a502b8d658b8d096111e54afcc73b0215a4.zip gdb-43083a502b8d658b8d096111e54afcc73b0215a4.tar.gz gdb-43083a502b8d658b8d096111e54afcc73b0215a4.tar.bz2 | |
x86-64: always use unsigned 32-bit reloc for 32-bit addressing w/o base reg
Except for %eip-relative addressing, where we don't have a suitable
relocation type silently wrapping at the 4G boundary, consistently
force use of R_X86_64_32 (in ELF terms) instead of its sign-extending
counterpart. This wasn't right in case there was no base register in
the addressing expression.
Diffstat (limited to 'ld')
| -rw-r--r-- | ld/ChangeLog | 6 | ||||
| -rw-r--r-- | ld/testsuite/ld-x86-64/apic.d | 18 | ||||
| -rw-r--r-- | ld/testsuite/ld-x86-64/apic.s | 13 | ||||
| -rw-r--r-- | ld/testsuite/ld-x86-64/x86-64.exp | 1 |
4 files changed, 38 insertions, 0 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index 4cfcf6d..6ec3260 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,9 @@ +2017-11-23 Jan Beulich <jbeulich@suse.com> + + PR gas/22441 + * testsuite/ld-x86-64/apic.{s,d}: New. + * testsuite/ld-x86-64/x86-64.exp: Run new test. + 2017-11-21 Nick Clifton <nickc@redhat.com> PR 22419 diff --git a/ld/testsuite/ld-x86-64/apic.d b/ld/testsuite/ld-x86-64/apic.d new file mode 100644 index 0000000..782c6fa --- /dev/null +++ b/ld/testsuite/ld-x86-64/apic.d @@ -0,0 +1,18 @@ +#name: 32-bit relocs w/ index but no base +#ld: --defsym APIC_BASE=0xfee00000 +#objdump: -dw + +.*: +file format .* + + +Disassembly of section \.text: + +#... +[0-9a-f]+[ ]+<apic_read>: +[ ]*[0-9a-f]+:[ ]+67 8b 04 bd 00 00 e0 fe[ ]+mov[ ]+(0xfee|-0x12)00000\(,%edi,4\),%eax +[ ]*[0-9a-f]+:[ ]+c3[ ]+retq?[ ]* +#... +[0-9a-f]+[ ]+<apic_write>: +[ ]*[0-9a-f]+:[ ]+67 89 34 bd 00 00 e0 fe[ ]+mov[ ]+%esi,(0xfee|-0x12)00000\(,%edi,4\) +[ ]*[0-9a-f]+:[ ]+c3[ ]+retq?[ ]* +#pass diff --git a/ld/testsuite/ld-x86-64/apic.s b/ld/testsuite/ld-x86-64/apic.s new file mode 100644 index 0000000..d500799 --- /dev/null +++ b/ld/testsuite/ld-x86-64/apic.s @@ -0,0 +1,13 @@ + .text + .intel_syntax noprefix + .global _start +_start: + ret + +apic_read: + mov eax, [edi*4+APIC_BASE] + ret + +apic_write: + mov [edi*4+APIC_BASE], esi + ret diff --git a/ld/testsuite/ld-x86-64/x86-64.exp b/ld/testsuite/ld-x86-64/x86-64.exp index ef2cb15..e58d7c8 100644 --- a/ld/testsuite/ld-x86-64/x86-64.exp +++ b/ld/testsuite/ld-x86-64/x86-64.exp @@ -267,6 +267,7 @@ if { ![ld_link $ld tmpdir/$test "-m$emul tmpdir/${test}a.o tmpdir/${test}b.o"] } run_dump_test "abs" run_dump_test "abs-l1om" +run_dump_test "apic" run_dump_test "pcrel8" run_dump_test "pcrel16" run_dump_test "tlsgd2" |