mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 04:52:05 +08:00
36938cabf0
"Unambiguous" is is in particular taking as reference the assembler, which also accepts certain insns - despite them allowing for varying operand size, and hence in principle being ambiguous - without any suffix. For example, from the very beginning of the life of x86-64 I had trouble understanding why a plain and simple RET had to be printed as RETQ. In case someone really used the 16-bit form, RETW disambiguates the two quite fine.
44 lines
1.6 KiB
D
44 lines
1.6 KiB
D
#source: ibt-plt-1.s
|
|
#as: --64 -defsym __64_bit__=1
|
|
#ld: -shared -m elf_x86_64 --hash-style=sysv -z max-page-size=0x200000 -z noseparate-code
|
|
#objdump: -dw
|
|
|
|
.*: +file format .*
|
|
|
|
|
|
Disassembly of section .plt:
|
|
|
|
[a-f0-9]+ <.plt>:
|
|
+[a-f0-9]+: ff 35 ([0-9a-f]{2} ){4}[ ]+push 0x[a-f0-9]+\(%rip\) # [a-f0-9]+ <_GLOBAL_OFFSET_TABLE_\+0x8>
|
|
+[a-f0-9]+: f2 ff 25 ([0-9a-f]{2} ){4}[ ]+bnd jmp \*0x[a-f0-9]+\(%rip\) # [a-f0-9]+ <_GLOBAL_OFFSET_TABLE_\+0x10>
|
|
+[a-f0-9]+: 0f 1f 00 nopl \(%rax\)
|
|
+[a-f0-9]+: f3 0f 1e fa endbr64
|
|
+[a-f0-9]+: 68 00 00 00 00 push \$0x0
|
|
+[a-f0-9]+: f2 e9 e1 ff ff ff bnd jmp [a-f0-9]+ <.plt>
|
|
+[a-f0-9]+: 90 nop
|
|
+[a-f0-9]+: f3 0f 1e fa endbr64
|
|
+[a-f0-9]+: 68 01 00 00 00 push \$0x1
|
|
+[a-f0-9]+: f2 e9 d1 ff ff ff bnd jmp [a-f0-9]+ <.plt>
|
|
+[a-f0-9]+: 90 nop
|
|
|
|
Disassembly of section .plt.sec:
|
|
|
|
[a-f0-9]+ <bar1@plt>:
|
|
+[a-f0-9]+: f3 0f 1e fa endbr64
|
|
+[a-f0-9]+: f2 ff 25 ([0-9a-f]{2} ){4}[ ]+bnd jmp \*0x[a-f0-9]+\(%rip\) # [a-f0-9]+ <bar1>
|
|
+[a-f0-9]+: 0f 1f 44 00 00 nopl 0x0\(%rax,%rax,1\)
|
|
|
|
[a-f0-9]+ <bar2@plt>:
|
|
+[a-f0-9]+: f3 0f 1e fa endbr64
|
|
+[a-f0-9]+: f2 ff 25 ([0-9a-f]{2} ){4}[ ]+bnd jmp \*0x[a-f0-9]+\(%rip\) # [a-f0-9]+ <bar2>
|
|
+[a-f0-9]+: 0f 1f 44 00 00 nopl 0x0\(%rax,%rax,1\)
|
|
|
|
Disassembly of section .text:
|
|
|
|
[a-f0-9]+ <foo>:
|
|
+[a-f0-9]+: 48 83 ec 08 sub \$0x8,%rsp
|
|
+[a-f0-9]+: e8 e7 ff ff ff call [a-f0-9]+ <bar2@plt>
|
|
+[a-f0-9]+: 48 83 c4 08 add \$0x8,%rsp
|
|
+[a-f0-9]+: e9 ce ff ff ff jmp [a-f0-9]+ <bar1@plt>
|
|
#pass
|