4 Commits

Author	SHA1	Message	Date
H. Peter Anvin	e47f4b7ad5	elf: fix "object" symbol keyword ... The "object" symbol keyword would incorrectly generate STT_NOTYPE instead of STT_OBJECT. Add test for weak object references; they are different from plain weak references in that they are guaranteed to resolve to zero if the symbol is not found. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>	2019-09-12 17:45:11 -07:00
H. Peter Anvin	90b1ccff86	Drop unnecessary EXTERN symbols ... Currently, NASM always issues as an unknown symbol any symbol declared EXTERN. This is highly undesirable when using common header files, as it might cause the linker to pull in a bunch of unnecessary modules, depending on how smart the linker is. Add a new REQUIRED directive which behaves like the old EXTERN, for the use cases which might still need this behavior. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>	2019-09-12 20:21:03 -04:00
H. Peter Anvin	495fda6341	elf: support weak global and extern references ... A global or extern definition can now contain the keyword "weak" (or "strong", although that is the default) to create a weak symbol or a weak external reference, respectively. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>	2019-09-12 14:27:50 -04:00
H. Peter Anvin	1bcc1e012a	test: test for ELF symbol visibility ... Add test for declaring ELF visibility. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>	2018-06-18 11:37:17 -07:00