|
Last change
on this file since cb7be8f was cb7be8f, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 3 years ago |
|
Update headers in .S files that incorrectly use #-style comments
|
-
Property mode
set to
100644
|
|
File size:
673 bytes
|
| Line | |
|---|
| 1 | /*
|
|---|
| 2 | * SPDX-FileCopyrightText: 2006 Ondrej Palkovsky
|
|---|
| 3 | *
|
|---|
| 4 | * SPDX-License-Identifier: BSD-3-Clause
|
|---|
| 5 | */
|
|---|
| 6 |
|
|---|
| 7 | #include <abi/asmtool.h>
|
|---|
| 8 |
|
|---|
| 9 | .text
|
|---|
| 10 |
|
|---|
| 11 | ## Make a system call.
|
|---|
| 12 | #
|
|---|
| 13 | # @param rdi First argument.
|
|---|
| 14 | # @param rsi Second argument.
|
|---|
| 15 | # @param rdx Third argument.
|
|---|
| 16 | # @param rcx Fourth argument.
|
|---|
| 17 | # @param r8 Fifth argument.
|
|---|
| 18 | # @param r9 Sixth argument.
|
|---|
| 19 | # @param 8(%rsp) Syscall number.
|
|---|
| 20 | #
|
|---|
| 21 | # @return The return value will be stored in RAX.
|
|---|
| 22 | #
|
|---|
| 23 | FUNCTION_BEGIN(__syscall)
|
|---|
| 24 | #
|
|---|
| 25 | # Move the syscall number into RAX.
|
|---|
| 26 | movslq 8(%rsp), %rax
|
|---|
| 27 |
|
|---|
| 28 | #
|
|---|
| 29 | # Save RCX, the 4th argument, aside because RCX gets rewritten by the
|
|---|
| 30 | # SYSCALL instruction.
|
|---|
| 31 | #
|
|---|
| 32 | movq %rcx, %r10
|
|---|
| 33 | syscall
|
|---|
| 34 | ret
|
|---|
| 35 | FUNCTION_END(__syscall)
|
|---|
| 36 |
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
