From 967705fee12b4c02456fedbeb4c0dc6e79469ca7 Mon Sep 17 00:00:00 2001 From: Thomas Schwinge Date: Sat, 23 Jun 2012 11:47:39 +0200 Subject: SH: ABORT_INSTRUCTION. --- ChangeLog | 4 ++++ sysdeps/sh/abort-instr.h | 3 +++ sysdeps/unix/sysv/linux/sh/makecontext.S | 7 ++++--- 3 files changed, 11 insertions(+), 3 deletions(-) create mode 100644 sysdeps/sh/abort-instr.h diff --git a/ChangeLog b/ChangeLog index 751797d4f4..1ec2e00a7d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2012-06-23 Thomas Schwinge + * sysdeps/sh/abort-instr.h: New file. + * sysdeps/unix/sysv/linux/sh/makecontext.S (.Lexitcode): Terminate the + process in case exit returns. + * sysdeps/unix/sysv/linux/sh/makecontext.S (.Lexitcode): Always initialize the GOT register before use. diff --git a/sysdeps/sh/abort-instr.h b/sysdeps/sh/abort-instr.h new file mode 100644 index 0000000000..69381aec8e --- /dev/null +++ b/sysdeps/sh/abort-instr.h @@ -0,0 +1,3 @@ +/* An instruction which should crash any program is `sleep'. */ +#define ABORT_INSTRUCTION_ASM sleep +#define ABORT_INSTRUCTION asm ("sleep") diff --git a/sysdeps/unix/sysv/linux/sh/makecontext.S b/sysdeps/unix/sysv/linux/sh/makecontext.S index a847bb60b6..ec9ce91693 100644 --- a/sysdeps/unix/sysv/linux/sh/makecontext.S +++ b/sysdeps/unix/sysv/linux/sh/makecontext.S @@ -17,6 +17,7 @@ . */ #include +#include #include "ucontext_i.h" @@ -124,9 +125,9 @@ ENTRY(__makecontext) #endif jsr @r1 mov r0, r4 -0: - bra 0b - nop + /* The 'exit' call should never return. In case it does cause the + process to terminate. */ + ABORT_INSTRUCTION_ASM .align 2 #ifdef PIC -- cgit 1.4.1