On Tue, Oct 26, 2010 at 01:07:26PM +0100, Jon Beniston wrote: > > lm32 has a gdb simulator available, so it should be fairly easy to write > > a board file for it if one doesn't already exist. > > > > Unfortunately, building lm32-elf is broken in several different ways > > right now. > > What problems do you have building lm32-elf? If you let me know, I can try > to look in to them.
At least INCOMING_RETURN_ADDR_RTX and TARGET_EXCEPT_UNWIND_INFO need to be defined, as in the below patch (not sure about the definition of INCOMING_RETURN_ADDR_RTX). I think even with those defined, compiling libgcc ICEs, though I don't remember the details. -Nathan diff --git a/gcc/config/lm32/lm32.c b/gcc/config/lm32/lm32.c index 671f0e1..b355309 100644 --- a/gcc/config/lm32/lm32.c +++ b/gcc/config/lm32/lm32.c @@ -100,6 +100,9 @@ static void lm32_option_override (void); #undef TARGET_LEGITIMATE_ADDRESS_P #define TARGET_LEGITIMATE_ADDRESS_P lm32_legitimate_address_p +#undef TARGET_EXCEPT_UNWIND_INFO +#define TARGET_EXCEPT_UNWIND_INFO sjlj_except_unwind_info + struct gcc_target targetm = TARGET_INITIALIZER; /* Current frame information calculated by lm32_compute_frame_size. */ diff --git a/gcc/config/lm32/lm32.h b/gcc/config/lm32/lm32.h index b0c2d59..4c63e94 100644 --- a/gcc/config/lm32/lm32.h +++ b/gcc/config/lm32/lm32.h @@ -249,6 +249,8 @@ enum reg_class #define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM +#define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (SImode, RA_REGNUM) + #define RETURN_ADDR_RTX(count, frame) \ lm32_return_addr_rtx (count, frame)
