https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82699
Bug ID: 82699
Summary: ENDBR isn't generated at function entrance
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: igor.v.tsimbalist at intel dot com
Blocks: 81652
Target Milestone: ---
[hjl@gnu-tools-1 xxx]$ cat x.i
extern int bar (int);
int
foo (int i)
{
return bar (i);
}
[hjl@gnu-tools-1 xxx]$ make
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -fcf-protection -mcet -O2
-mfentry -pg -S x.i
[hjl@gnu-tools-1 xxx]$ cat x.s
.file "x.i"
.text
.p2align 4,,15
.globl foo
.type foo, @function
foo:
.LFB0:
.cfi_startproc
1: call __fentry__
endbr64 <<<<<<<<<<<<<<<< Wrong place.
subq $8, %rsp
.cfi_def_cfa_offset 16
addq $8, %rsp
.cfi_def_cfa_offset 8
jmp bar
.cfi_endproc
.LFE0:
.size foo, .-foo
.ident "GCC: (GNU) 8.0.0 20171024 (experimental)"
.section .note.GNU-stack,"",@progbits
.section .note.gnu.property,"a"
.align 8
.long 1f - 0f
.long 4f - 1f
.long 5
0:
.string "GNU"
1:
.align 8
.long 0xc0000002
.long 3f - 2f
2:
.long 0x3
3:
.align 8
4:
[hjl@gnu-tools-1 xxx]$
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81652
[Bug 81652] [meta-bug] -fcf-protection=full -mcet bugs
