csu: Find the main pointer through the GOT

Use the Global Offset Table to find the location of main in crt1. With
lld the old code would point to main@plt, however ld.bfd fails to link
when main is in a shared library.

Fix this by using the GOT address to find main as it works with both
lld and bfd.

Reviewed by:	jrtc27
Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D45259

This commit is contained in:

Andrew Turner

2024-05-22 08:18:10 +00:00

parent 8e82c5e28d

commit 53120fbb68

1 changed files with 2 additions and 2 deletions

									
										lib/csu/aarch64/crt1_s.S
									
		+2
		-2
	
												View File
												
				@@ -44,8 +44,8 @@ ENTRY(_start)

					add	x2, x1, x0, lsl #3 /* env is after argv */

					add	x2, x2, #8	/* argv is null terminated */

				#ifdef PIC

					adrp	x4, main

					add	x4, x4, :lo12:main

					adrp	x4, :got:main

					ldr	x4, [x4, :got_lo12:main]

				#else

					ldr	x4, =main

				#endif