lkml.org 
[lkml]   [2016]   [May]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 08/23] arm64: ilp32: add documentation on the ILP32 ABI for ARM64
Date
Based on Andrew Pinski's patch-series.

Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
---
Documentation/arm64/ilp32.txt | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 Documentation/arm64/ilp32.txt

diff --git a/Documentation/arm64/ilp32.txt b/Documentation/arm64/ilp32.txt
new file mode 100644
index 0000000..8e74d67
--- /dev/null
+++ b/Documentation/arm64/ilp32.txt
@@ -0,0 +1,25 @@
+ILP32 AARCH64 SYSCALL ABI
+=========================
+
+This document describes the ILP32 syscall ABI and where it differs
+from the generic compat linux syscall interface.
+
+Syscalls which normally would pass 64bit values as two arguments;
+now pass the 64bit value as one argument. Next syscalls are affected:
+fadvise64_64,
+fallocate,
+ftruncate,
+lookup_dcookie,
+pread64,
+pwrite64,
+readahead,
+shmat,
+sync_file_range,
+truncate,
+lseek,
+mmap
+
+struct rt_sigframe is redefined and contains struct compat_siginfo,
+as compat syscalls expects, and struct ilp32_sigframe, to handle
+AARCH64 register set and 32-bit userspace register representation.
+
--
2.5.0
\
 
 \ /
  Last update: 2016-05-24 02:21    [W:0.197 / U:2.488 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site