From 85ced3c8a78f87103ed17bfbc262721298bab43e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se> Date: Sun, 16 Oct 2005 21:10:36 +0200 Subject: [PATCH] * sparc/aes-encrypt-internal.asm, sparc/aes-decrypt-internal.asm: Reduced frame size to 104 bytes, since we no longer need wtxt and tmp on the stack. Rev: src/nettle/sparc/aes-decrypt-internal.asm:1.2 Rev: src/nettle/sparc/aes-encrypt-internal.asm:1.12 --- sparc/aes-decrypt-internal.asm | 6 ++---- sparc/aes-encrypt-internal.asm | 11 +++++++---- 2 files changed, 9 insertions(+), 8 deletions(-) diff --git a/sparc/aes-decrypt-internal.asm b/sparc/aes-decrypt-internal.asm index ecc2712e..6318ca9f 100644 --- a/sparc/aes-decrypt-internal.asm +++ b/sparc/aes-decrypt-internal.asm @@ -51,10 +51,8 @@ C The sparc32 stack frame looks like C C %fp - 4: OS-dependent link field C %fp - 8: OS-dependent link field -C %fp - 24: tmp, uint32_t[4] -C %fp - 40: wtxt, uint32_t[4] -C %fp - 136: OS register save area. -define(<FRAME_SIZE>, 136) +C %fp - 104: OS register save area. +define(<FRAME_SIZE>, 104) .file "aes-decrypt-internal.asm" diff --git a/sparc/aes-encrypt-internal.asm b/sparc/aes-encrypt-internal.asm index 77011772..30937df0 100644 --- a/sparc/aes-encrypt-internal.asm +++ b/sparc/aes-encrypt-internal.asm @@ -47,14 +47,17 @@ C %g1 and %g2 are TMP1 and TMP2 C Registers %g1-%g3 and %o0 - %o5 are free to use. +C I'm still slightly confused by the frame layout, specified in +C "SYSTEM V APPLICATION BINARY INTERFACE SPARC Processor Supplement". +C However, Sun's cc generates a 104 byte stack frame for a function +C with no local variables, so that should be good enough for us too. + C The sparc32 stack frame looks like C C %fp - 4: OS-dependent link field C %fp - 8: OS-dependent link field -C %fp - 24: tmp, uint32_t[4] -C %fp - 40: wtxt, uint32_t[4] -C %fp - 136: OS register save area. -define(<FRAME_SIZE>, 136) +C %fp - 104: OS register save area +define(<FRAME_SIZE>, 104) .file "aes-encrypt-internal.asm" -- GitLab