#ifndef PICKNO
# define PICKNO 1
#endif
#if PICKNO == 2
# define PICK(fn1, fn2) #fn2
#else
# define PICK(fn1, fn2) #fn1
#endif
#ifdef __x86_64__
# define IFUNC_ASM(fn) "\tleaq " fn "(%rip), %rax\n\tretq\n"
#endif
#define IFUNC(name, globl, fn1, fn2) \
extern __typeof (fn1) fn1 __attribute__((used));\
extern __typeof (fn2) fn2 __attribute__((used));\
extern __typeof (fn1) name;\
asm (globl " " #name "\n"\
"\t.type " #name ", @gnu_indirect_function\n"\
#name ":\n"\
IFUNC_ASM (PICK (fn1, fn2))\
"\t.size " #name ", .-" #name "\n")
#define IFUNC_LOCAL(name, fn1, fn2) IFUNC(name, ".local", fn1, fn2)
#define IFUNC_GLOBAL(name, fn1, fn2) IFUNC(name, ".globl", fn1, fn2)
static int foo1 (void) { return 1; }
static int foo2 (void) { return 2; }
IFUNC_LOCAL (foo, foo1, foo2);
extern void abort (void);
int
main (void)
{
if (foo () != PICKNO)
abort ();
return 0;
}
In this case IMHO gas should create R_*_IRELATIVE relocation against the local
foo symbol. If foo is .globl or .globl and .hidden, it works correctly.
--
Summary: IFUNC gas problem
Product: binutils
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: gas
AssignedTo: unassigned at sources dot redhat dot com
ReportedBy: jakub at redhat dot com
CC: bug-binutils at gnu dot org
http://sourceware.org/bugzilla/show_bug.cgi?id=10269
------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.
_______________________________________________
bug-binutils mailing list
bug-binutils@gnu.org
http://lists.gnu.org/mailman/listinfo/bug-binutils
