Nathan Froyd f1cb0951c5 MIPS: Correct FCR0 initialization ... This change addresses a problem where QEMU incorrectly traps on floating-point MADD group instructions with SIGILL, at least while emulating MIPS32r2 processors. These instructions use the COP1X major opcode and include ones like: madd.d $f2,$f4,$f2,$f6 Here's Nathan's original analysis of the problem: "QEMU essentially does: d = find_cpu (cpu_string) // get CPU definition fpu_init (env, d) // initialize fpu state (init FCR0, basically) cpu_reset (env) ...and the cpu_reset call clears all interesting state that fpu_init setup, then proceeds to reinitialize all the CP0 registers...but not FCR0." I have verified this change with system emulation running the GDB test suite for the mips-sde-elf target (o32, big endian, 24Kf CPU emulated), there were 55 progressions and no regressions. Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>		2012-08-09 18:36:19 +00:00
..
cpu-qom.h	target-mips: QOM'ify CPU	2012-04-30 11:32:13 +02:00
cpu.c	target-mips: Start QOM'ifying CPU init	2012-04-30 11:32:13 +02:00
cpu.h	Kill off cpu_state_reset()	2012-06-04 23:00:45 +02:00
helper.c	target-mips: Use cpu_reset() in do_interrupt()	2012-06-04 23:00:43 +02:00
helper.h	target-mips: Add compiler attribute to some functions which don't return	2012-03-24 13:02:43 +00:00
machine.c	target-mips: Don't overuse CPUState	2012-03-14 22:20:25 +01:00
Makefile.objs	build: move other target-*/ objects to nested Makefile.objs	2012-06-07 09:21:11 +02:00
mips-defs.h	MIPS: Initial support of fulong mini pc (CPU definition)	2010-06-29 23:07:52 +02:00
op_helper.c	target-mips: Remove unused inline function	2012-05-03 07:04:48 +02:00
TODO	Replace Qemu by QEMU in internal documentation	2012-04-07 13:58:25 +00:00
translate_init.c	mips: Default to using one VPE and one TC.	2011-09-06 11:09:39 +02:00
translate.c	MIPS: Correct FCR0 initialization	2012-08-09 18:36:19 +00:00