From b3ae6aabd76899a7fd129c6c8cecadb6ae33be3e Mon Sep 17 00:00:00 2001 From: Florian Fainelli <florian@openwrt.org> Date: Sat, 26 Sep 2009 18:08:02 +0000 Subject: [toolchain] Do not save variables in hi or lo across system calls, fixes issues with gcc-4.4 (#5351) git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17742 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../patches-0.9.30.1/901-hi_lo_system_calls.patch | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 toolchain/uClibc/patches-0.9.30.1/901-hi_lo_system_calls.patch diff --git a/toolchain/uClibc/patches-0.9.30.1/901-hi_lo_system_calls.patch b/toolchain/uClibc/patches-0.9.30.1/901-hi_lo_system_calls.patch new file mode 100644 index 0000000000..6c78130e3f --- /dev/null +++ b/toolchain/uClibc/patches-0.9.30.1/901-hi_lo_system_calls.patch @@ -0,0 +1,30 @@ +The kernel does not save these registers across system calls. GCC 4.4 +has gotten more agressive about using them for temporary variables, so +this shows up as intermittent crashes if you use a recent compiler. + +Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com> + +diff --git a/libc/sysdeps/linux/mips/bits/syscalls.h b/libc/sysdeps/linux/mips/bits/syscalls.h +index 3639913..28b0f91 100644 +--- a/libc/sysdeps/linux/mips/bits/syscalls.h ++++ b/libc/sysdeps/linux/mips/bits/syscalls.h +@@ -261,7 +261,7 @@ + }) + + #define __SYSCALL_CLOBBERS "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", \ +- "$14", "$15", "$24", "$25", "memory" ++ "$14", "$15", "$24", "$25", "hi", "lo", "memory" + + #else /* N32 || N64 */ + +@@ -318,7 +318,7 @@ + }) + + #define __SYSCALL_CLOBBERS "$1", "$3", "$10", "$11", "$12", "$13", \ +- "$14", "$15", "$24", "$25", "memory" ++ "$14", "$15", "$24", "$25", "hi", "lo", "memory" + + #endif + + +-- -- cgit v1.2.3