From 854df54e1839c8b96d1aaa9aeaa32c2ebbf535f8 Mon Sep 17 00:00:00 2001 From: lemon Date: Sat, 13 Dec 2025 14:21:22 +0100 Subject: fix position independent loads of function symbols. For `extern int x[1];`, can use PCREL32 for &x. But for `extern int x(int)`, must use GOTREL, when not being called directly (that's PLT). Therefore the type of an external symbol (actually just whether it denotes a function) matters when deciding what kind of relocation to emit, so keep that information. --- test/15-reloc.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 test/15-reloc.c (limited to 'test/15-reloc.c') diff --git a/test/15-reloc.c b/test/15-reloc.c new file mode 100644 index 0000000..8d1b323 --- /dev/null +++ b/test/15-reloc.c @@ -0,0 +1,29 @@ +/* EXPECT: +1.3 +5 +ok +*/ + +const void *const relro = &relro; +float get_value(unsigned x) { + static const float values [] = {1.1f, 1.2f, 1.3f, 1.4f}; + return x < 4 ? values[x] : 0.0f; +} + +static const short tb[] = { 1,3,34,5,23,2,5,5,-7 }; +static const short *ptb = &tb[4]; + +static int ou(int k) { return ptb[k]; } + +int (*(getputs(void)))(const char *) { + extern int puts(const char *); + int (*t)(const char *) = puts; + return t; +} + +#include +int main() { + printf("%g\n", get_value(2)); + printf("%d\n", ou(2)); + getputs()("ok"); +} -- cgit v1.2.3