On 21 January 2011 03:34, maheen butt <maheen_but...@yahoo.com> wrote: > In QEMU code almost every signal is handled then why this warning is > generated from syscall.c > #elif defined(TARGET_ABI_MIPSN64) > > # warning signal handling not implemented
This is in the Linux user-mode code, which has to correctly emulate calling a signal handler in the program being run. This requires (among other things) setting up a structure with all the CPU registers in the right place, which we will pass to the signal handler. So it is both CPU specific, and specific to the ABI being used by the program being run. For this particular case (MIPS CPU and the N64 or N32 ABI) the code has not been implemented. So we print a warning at compile time, and at runtime we will not correctly run programs which use signals. -- PMM
