openbsd/src/lib/libcrypto/modes/asm, branch libressl-v4.2.1

Make OPENSSL_IA32_SSE2 the default for i386 and remove the flag.

2025-06-09T14:28:34+00:00

The OPENSSL_IA32_SSE2 flag controls whether a number of the perlasm scripts generate additional implementations that use SSE2 functionality. In all cases except ghash, the code checks OPENSSL_ia32cap_P for SSE2 support, before trying to run SSE2 code. For ghash it generates a CLMUL based implementation in addition to different MMX version (one MMX version hides behind OPENSSL_IA32_SSE2, the other does not), however this does not appear to actually use SSE2. We also disable AES-NI on i386 if OPENSSL_IA32_SSE2. On OpenBSD, we've always defined OPENSSL_IA32_SSE2 so this is effectively a no-op. The only change is that we now check MMX rather than SSE2 for the ghash MMX implementation. ok bcook@ beck@

Add a few missing endbr64 to libcrypto

2024-02-24T17:53:20+00:00

gcm_{gmult,ghash}_4bit(), aesni_ccm64_decrypt_blocks(), aes_cbc_encrypt(), and aesni_xts_{en,de}crypt() were overlooked in previous passes. Found with a diff for ld.lld by kettenis ok kettenis

Replace uses of endbr64 with _CET_ENDBR from cet.h

2024-02-24T15:30:14+00:00

cet.h is needed for other platforms to emit the relevant .gnu.properties sections that are necessary for them to enable IBT. It also avoids issues with older toolchains on macOS that explode on encountering endbr64. based on a diff by kettenis ok beck kettenis

Avoid a four-byte overread in gcm_ghash_4bit_mmx() on i386

2024-01-24T15:24:28+00:00

This is a variant of the same logic error fixed in ghash-x86_64.pl r1.6. The code path is only reachable on machines without FXSR or PCLMUL. ok jsing

Avoid a four byte overread in gcm_ghash_4bit() on amd64.

2024-01-24T13:39:44+00:00

The assembly code for gcm_ghash_4bit() reads one too many times from Xi, resulting in a four byte overread. Prevent this by not loading the next value in the final iteration of the loop. If another full iteration is required the next Xi value will be loaded at the top of the outer_loop. Many thanks to Douglas Gliner for finding and reporting this issue, along with a detailed reproducer. Same diff from deraadt@ ok tb@

Add endbr64 where needed by inspection. Passes regresson tests.

2023-04-25T04:42:26+00:00

ok jsing, and kind of tb an earlier version

Use explicit .text instead of .previous to please Windows/MinGW on amd64

2023-02-23T08:55:44+00:00

ok miod

Use .section .rodata instead of a plain .rodata

2023-02-09T19:57:00+00:00

At least gcc 12 on Fedora is very unhappy about a plain .rodata and throws Error: unknown pseudo-op: `.rodata'. So add a .section in front of it to make it happy. ok deraadt miod

Move all data blocks from .text to .rodata and cleanup up and homogeneize code

2023-02-02T13:03:50+00:00

responsible from getting the proper address of those blocks.

Move all data blocks from .text to .rodata and cleanup up and homogeneize code

2023-02-01T20:45:04+00:00

responsible from getting the proper address of those blocks. ok tb@ jsing@