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Rev: nettle/ChangeLog:1.16
Rev: nettle/x86_64/README:1.1

diff --git a/ChangeLog b/ChangeLog
index 38f85c1611e69950175d2910cd123c746a535b71..30791c07b97b2cf96e5f8f6cadce59396245e41b 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-09-10  Niels Möller  <nisse@lysator.liu.se>
+
+       * x86_64/sha1-compress.asm: Avoid using registers %rbx and %rbp,
+       which must be preserved.
+
 2008-09-08  Niels Möller  <nisse@lysator.liu.se>
 
        * Makefile.in (stamp-h.in): Use $(AUTOHEADER).

diff --git a/x86_64/README b/x86_64/README
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+ABI, according to http://www.x86-64.org/documentation/abi-0.99.pdf:
+
+Up to 6 integer and pointer arguments are passed in registers. Nine
+registers, %rax, %rcx, %rdx, %rsi, %rdi and %r8-%r12 can be used
+freely. Integers and pointers are returned in %rax.
+
+Registers      May be          Argument
+               clobbered       number
+
+%rax           Y
+%rbx           
+%rcx           Y               4
+%rdx           Y               3
+%rbp           
+%rsi           Y               2
+%rdi           Y               1 
+%rsp           (SP)
+%r8            Y               5
+%r9            Y               6
+%r10           Y
+%r11           Y
+%r12           
+%r13           
+%r14           
+%r15