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mold/test/elf/absolute-symbols.sh
Rui Ueyama e6d4154688 [ELF] Generalize tests
With this change, you can now cross compile test cases and run
them on qemu-user. Here is an example to run our test suits in
an emulated ARM32 environment.

$ CC=arm-linux-gnueabihf-gcc \
  CXX=arm-linux-gnueabihf-g++ \
  GCC=arm-linux-gnueabihf-gcc \
  GXX=arm-linux-gnueabihf-g++ \
  OBJDUMP=arm-linux-gnueabihf-objdump \
  MACHINE=arm \
  QEMU='qemu-arm -L /usr/arm-linux-gnueabihf' \
  make -j16 test
2022-04-02 16:53:41 +08:00

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#!/bin/bash
export LC_ALL=C
set -e
CC="${CC:-cc}"
CXX="${CXX:-c++}"
GCC="${GCC:-gcc}"
GXX="${GXX:-g++}"
OBJDUMP="${OBJDUMP:-objdump}"
MACHINE="${MACHINE:-$(uname -m)}"
testname=$(basename "$0" .sh)
echo -n "Testing $testname ... "
cd "$(dirname "$0")"/../..
mold="$(pwd)/mold"
t=out/test/elf/$testname
mkdir -p $t
[ $MACHINE = x86_64 ] || { echo skipped; exit; }
cat <<EOF | $CC -o $t/a.o -c -x assembler -
.globl foo
foo = 0x800000
EOF
cat <<EOF | $CC -o $t/b.o -c -fno-PIC -xc -
#define _GNU_SOURCE 1
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <ucontext.h>
void handler(int signum, siginfo_t *info, void *ptr) {
ucontext_t *u = (ucontext_t *)ptr;
printf("ip=0x%llx\n", u->uc_mcontext.gregs[REG_RIP]);
exit(0);
}
void foo();
int main() {
struct sigaction act;
act.sa_flags = SA_SIGINFO | SA_RESETHAND;
act.sa_sigaction = handler;
sigemptyset(&act.sa_mask);
sigaction(SIGSEGV, &act, 0);
foo();
}
EOF
$CC -B. -o $t/exe -no-pie $t/a.o $t/b.o
$QEMU $t/exe | grep -q '^ip=0x800000$'
echo OK