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| author | H.J. Lu <hjl.tools@gmail.com> | 2016-06-08 04:55:10 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2016-06-08 05:57:18 -0700 |
| commit | d9aee8d5f77e0b1b923e0fb1ad5d8050eb0240b8 (patch) | |
| tree | ed2a294a04b513d367e04723c5747ae62e7f7d6a /ld/testsuite/ld-x86-64/no-plt-1f.dd | |
| parent | 33c2b983b4854cf4dbbeefa45506a1812a60328e (diff) | |
| download | gdb-d9aee8d5f77e0b1b923e0fb1ad5d8050eb0240b8.zip gdb-d9aee8d5f77e0b1b923e0fb1ad5d8050eb0240b8.tar.gz gdb-d9aee8d5f77e0b1b923e0fb1ad5d8050eb0240b8.tar.bz2 | |
X86-64: Test external function reference without PLT
To call an external function, the direct branch to the PLT entry can be
replaced by an indirect branch via the GOT slot, which is similar to the
first instruction in the PLT slot. Instead using the PLT slot as function
address, the function address is retrieved from the GOT slot. If linker
determines the function is defined locally, it converts indirect branch
via the GOT slot to direct branch with a nop prefix and converts load via
the GOT slot to load immediate or lea,
* testsuite/ld-x86-64/libno-plt-1b.dd: Likewise.
* testsuite/ld-x86-64/libno-plt-1b.rd: Likewise.
* testsuite/ld-x86-64/no-plt-1a.dd: Likewise.
* testsuite/ld-x86-64/no-plt-1a.rd: Likewise.
* testsuite/ld-x86-64/no-plt-1b.dd: Likewise.
* testsuite/ld-x86-64/no-plt-1b.rd: Likewise.
* testsuite/ld-x86-64/no-plt-1c.dd: Likewise.
* testsuite/ld-x86-64/no-plt-1c.rd: Likewise.
* testsuite/ld-x86-64/no-plt-1d.dd: Likewise.
* testsuite/ld-x86-64/no-plt-1d.rd: Likewise.
* testsuite/ld-x86-64/no-plt-1e.dd: Likewise.
* testsuite/ld-x86-64/no-plt-1e.rd: Likewise.
* testsuite/ld-x86-64/no-plt-1f.dd: Likewise.
* testsuite/ld-x86-64/no-plt-1f.rd: Likewise.
* testsuite/ld-x86-64/no-plt-1g.dd: Likewise.
* testsuite/ld-x86-64/no-plt-1g.rd: Likewise.
* testsuite/ld-x86-64/no-plt-check1.S: Likewise.
* testsuite/ld-x86-64/no-plt.exp: Likewise.
* testsuite/ld-x86-64/no-plt-extern1.S: Likewise.
* testsuite/ld-x86-64/no-plt-func1.c: Likewise.
* testsuite/ld-x86-64/no-plt-main1.c: Likewise.
Diffstat (limited to 'ld/testsuite/ld-x86-64/no-plt-1f.dd')
| -rw-r--r-- | ld/testsuite/ld-x86-64/no-plt-1f.dd | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/ld/testsuite/ld-x86-64/no-plt-1f.dd b/ld/testsuite/ld-x86-64/no-plt-1f.dd new file mode 100644 index 0000000..5662a2f --- /dev/null +++ b/ld/testsuite/ld-x86-64/no-plt-1f.dd @@ -0,0 +1,24 @@ +#objdump: -dwrj.text +#target: x86_64-*-* + +.*: +file format elf64-x86-64.* + +Disassembly of section .text: + +#... +[0-9a-f]+ <check>: + +[a-f0-9]+: 48 83 ec 08 sub \$0x8,%rsp + +[a-f0-9]+: ff 15 ([0-9a-f]{2} ){4}[ ]+callq \*0x[0-9a-f]+\(%rip\) +# [0-9a-f]+ <_DYNAMIC\+0x[0-9a-f]+> + +[a-f0-9]+: 48 3b 05 ([0-9a-f]{2} ){4}[ ]+cmp 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <_DYNAMIC\+0x[0-9a-f]+> + +[a-f0-9]+: 75 2b jne [0-9a-f]+ <check\+0x[0-9a-f]+> + +[a-f0-9]+: ff 15 ([0-9a-f]{2} ){4}[ ]+callq \*0x[0-9a-f]+\(%rip\) +# [0-9a-f]+ <_DYNAMIC\+0x[0-9a-f]+> + +[a-f0-9]+: 3d 78 56 34 12 cmp \$0x12345678,%eax + +[a-f0-9]+: 75 1e jne [0-9a-f]+ <check\+0x[0-9a-f]+> + +[a-f0-9]+: ff 15 ([0-9a-f]{2} ){4}[ ]+callq \*0x[0-9a-f]+\(%rip\) +# [0-9a-f]+ <_DYNAMIC\+0x[0-9a-f]+> + +[a-f0-9]+: 3d 78 56 34 12 cmp \$0x12345678,%eax + +[a-f0-9]+: 75 11 jne [0-9a-f]+ <check\+0x[0-9a-f]+> + +[a-f0-9]+: 48 8d 3d ([0-9a-f]{2} ){4}[ ]+lea 0x[a-f0-9]+\(%rip\),%rdi +# [a-f0-9]+.* + +[a-f0-9]+: 48 83 c4 08 add \$0x8,%rsp + +[a-f0-9]+: ff 25 ([0-9a-f]{2} ){4}[ ]+jmpq \*0x[0-9a-f]+\(%rip\) +# [0-9a-f]+ <_DYNAMIC\+0x[0-9a-f]+> + +[a-f0-9]+: ff 15 ([0-9a-f]{2} ){4}[ ]+callq \*0x[0-9a-f]+\(%rip\) +# [0-9a-f]+ <_DYNAMIC\+0x[0-9a-f]+> +#pass |