4 commits

Author	SHA1	Message	Date
Andrew Turner	522126fea7	csu: Teach csu about PAC and BTI ... Add the Branch Target Identification (BTI) note to libc assembly sources and Pointer Authentication Code (PAC) instructions to _init and _fini. _init and _fini may be called indirectly so need a BTI landing pad. As they are non-leaf functions use the appropriate PAC instruction that also guards against changing the link register. As all object files need the note for any binary using these object files we need to insert it in all asm files. Reviewed by: markj Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D42227	2023-10-30 17:55:44 +00:00
Warner Losh	1d386b48a5	Remove $FreeBSD$: one-line .c pattern ... Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/	2023-08-16 11:54:42 -06:00
John Baldwin	74ad8d607d	csu: Add missing GNU-stack annotations to note object files. ... ld.bfd marks the stack as executable for the crt objects due to the missing annotations which raises a fatal warning starting with version 2.39.	2022-11-18 12:22:23 -08:00
John Baldwin	99282790b7	Remove the sed hack for ABI tag notes. ... The ELF notes compiled in C were placed in a section with the wrong type (SHT_PROGBITS instead of SHT_NOTE). Previously, sed was used on the generated assembly to rewrite the section type. Instead, write the notes in assembly which permits setting the correct section type directly. While here, move inline assembly entry points out of C and into assembly for aarch64, arm, and riscv. Reviewed by: kib Tested on: amd64 (cirrus-ci), riscv64 Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D25211	2020-06-15 19:38:48 +00:00