Hello,
I can't understand asm so would you help to see things going well?
I changed crypto_init_cipher_ops() in crypt/cipher.c
# thanks to ``HOWTO find oops location''
ops->cit_ivsize = crypto_tfm_alg_blocksize(tfm);
align = crypto_tfm_alg_alignmask(tfm) + 1;
asm("#1");
addr = (unsigned long)crypto_tfm_ctx(tfm);
asm("#2");
addr = ALIGN(addr, align);
asm("#3");
addr += ALIGN(tfm->__crt_alg->cra_ctxsize, align);
ops->cit_iv = (void *)addr;
The result of make crypt/cipher.s is as follows.
Is ``notl 32bit reg'' right? Is this a problem of gcc?
----
* gcc (GCC) 3.3.5 (Debian 1:3.3.5-13)
.L132:
movq 72(%r9), %rax
movl 20(%rax), %eax
movl %eax, 8(%r8)
movq 72(%r9), %rdi
movl 28(%rdi), %esi
leal 1(%rsi), %edx
#APP
#1
#NO_APP
leaq 80(%r9), %rcx
#APP
#2
#NO_APP
notl %esi
mov %edx, %eax
leaq -1(%rax,%rcx), %rcx
mov %esi, %eax
andq %rax, %rcx
#APP
#3
#NO_APP
addl 24(%rdi), %edx
----
* gcc-3.4 (GCC) 3.4.4 20050314 (prerelease) (Debian 3.4.3-13)
.L131:
movq 72(%rsi), %rax
movl 20(%rax), %eax
movl %eax, 8(%r8)
movq 72(%rsi), %rdi
movl 28(%rdi), %ecx
leal 1(%rcx), %edx
#APP
#1
#NO_APP
addq $80, %rsi
#APP
#2
#NO_APP
mov %edx, %eax
notl %ecx
leaq -1(%rax,%rsi), %rax
andl %ecx, %eax
#APP
#3
#NO_APP
addl 24(%rdi), %edx
----
* gcc-4.0 (GCC) 4.0.1 20050522 (prerelease) (Debian 4.0.0-9)
.L132:
movq 72(%r9), %rax
movl 20(%rax), %eax
movl %eax, 8(%r8)
movq 72(%r9), %rdi
movl 28(%rdi), %esi
leal 1(%rsi), %edx
#APP
#1
#NO_APP
leaq 80(%r9), %rcx
#APP
#2
#NO_APP
notl %esi
mov %edx, %eax
leaq -1(%rax,%rcx), %rcx
mov %esi, %eax
andq %rax, %rcx
#APP
#3
#NO_APP
addl 24(%rdi), %edx
-
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