Hi,
I stumbled upon this strange issue while adding ia64 support to HelenOS
dynamic linker....
When I build a shared library for ia64 (I can reproduce this with target ia
64-pc-linux-gnu-gcc), the linker generates relocations against local symbols
- for static functions that we take pointer to, I assume this is because the
function descriptors from the Itanium ABI need the absolute address of the
function. These local symbols are present in the dynamic symbol table, but *
not present* in the dynamic hash table.
Steps to reproduce:
gcc-9.1.0 configured with target ia64-pc-linux-gnu-gcc
binutils-2.32 configured with target ia64-pc-linux-gnu-gcc
test.c:
void (*fptr)(void);
static void a(void)
{
fptr = a;
}
void b(void)
{
fptr = b;
}
/usr/local/x/bin/ia64-pc-linux-gnu-gcc -fPIC -o test.o -c test.c
/usr/local/x/bin/ia64-pc-linux-gnu-gcc -fPIC -o test.so test.o -nostdlib -
shared
Can anybody advise on whether this is some kind of expected behavior, or
should it be considered a bug? This makes it difficult for the dynamic
linker to resolve the references efficiently. It seems prettty surpsising
that this would go on unnoticed if it were a bug...
Thanks,
Jiri
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