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| author | Niels Möller <nisse@lysator.liu.se> | 2008-09-10 22:15:26 +0200 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2008-09-10 22:15:26 +0200 |
| commit | eec8e84c9923cc11a52d8273b5b28af9403e3462 (patch) | |
| tree | bd0be1edb8da5ae45829ca50ff610135bd83212e /x86_64/README | |
| parent | f2ffb43d9cfe2c7897ebe7325e0ef6fc74a9737a (diff) | |
| download | nettle-eec8e84c9923cc11a52d8273b5b28af9403e3462.tar.gz | |
*** empty log message ***
Rev: nettle/ChangeLog:1.16
Rev: nettle/x86_64/README:1.1
Diffstat (limited to 'x86_64/README')
| -rw-r--r-- | x86_64/README | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/x86_64/README b/x86_64/README new file mode 100644 index 00000000..95db7fee --- /dev/null +++ b/x86_64/README @@ -0,0 +1,25 @@ +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 |