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Hi! On Thu, 14 Jun 2012 11:08:53 +0200, I wrote: > Despite libc-help's yesterday's discussion on a similar topic, and in > spirit of what other architectures are using, I plan to commit the > following, assuming Kaz agrees that the sleep instruction is a suitable > choice. Actually, how about this one instead: * sysdeps/sh/abort-instr.h: New file. * sysdeps/unix/sysv/linux/sh/makecontext.S (.Lexitcode): Terminate the process in case exit returns. diff --git a/sysdeps/sh/abort-instr.h b/sysdeps/sh/abort-instr.h new file mode 100644 index 0000000..69381ae --- /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 70ea9f4..2aa3889 100644 --- a/sysdeps/unix/sysv/linux/sh/makecontext.S +++ b/sysdeps/unix/sysv/linux/sh/makecontext.S @@ -17,6 +17,7 @@ <http://www.gnu.org/licenses/>. */ #include <sysdep.h> +#include <abort-instr.h> #include "ucontext_i.h" @@ -124,9 +125,11 @@ ENTRY(__makecontext) #endif jsr @r1 mov r0, r4 + /* The 'exit' call should never return. In case it does cause the + process to terminate. */ 0: bra 0b - nop + ABORT_INSTRUCTION_ASM .align 2 #ifdef PIC GrÃÃe, Thomas
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