[mirror_qemu.git] / target-alpha / STATUS

(to be completed)

Alpha emulation structure:
cpu.h           : CPU definitions globally exported
exec.h          : CPU definitions used only for translated code execution
helper.c        : helpers that can be called either by the translated code
                  or the QEMU core, including the exception handler.
op_helper.c     : helpers that can be called only from TCG
helper.h        : TCG helpers prototypes
translate.c     : Alpha instructions to micro-operations translator

Code translator status:
The Alpha CPU instruction emulation should be quite complete with the
limitation that the VAX floating-point load and stores are not tested.
The 4 MMU modes are implemented.

Linux user mode emulation status:
a few programs start to run. Most crash at a certain point, dereferencing a
NULL pointer. It seems that the UNIQUE register is not initialized properly.
It may appear that old executables, not relying on TLS support, run but
this is to be proved...

Full system emulation status:
* Alpha PALCode emulation is in a very early stage and is not sufficient
  to run any real OS. The alpha-softmmu target is not enabled for now.
* no hardware platform description is implemented
* there might be problems in the Alpha PALCode dedicated instructions
  that would prevent to use a native PALCode image.
Commit	Line	Data
615e2dba JM	1	(to be completed)
	2
	3	Alpha emulation structure:
	4	cpu.h : CPU definitions globally exported
	5	exec.h : CPU definitions used only for translated code execution
	6	helper.c : helpers that can be called either by the translated code
6576b74b	7	or the QEMU core, including the exception handler.
d1412eb2 AJ	8	op_helper.c : helpers that can be called only from TCG
d1412eb2 AJ	9	helper.h : TCG helpers prototypes
615e2dba JM	10	translate.c : Alpha instructions to micro-operations translator
	11
	12	Code translator status:
	13	The Alpha CPU instruction emulation should be quite complete with the
d1412eb2	14	limitation that the VAX floating-point load and stores are not tested.
615e2dba JM	15	The 4 MMU modes are implemented.
	16
	17	Linux user mode emulation status:
	18	a few programs start to run. Most crash at a certain point, dereferencing a
	19	NULL pointer. It seems that the UNIQUE register is not initialized properly.
	20	It may appear that old executables, not relying on TLS support, run but
4abf79a4	21	this is to be proved...
615e2dba JM	22
	23	Full system emulation status:
	24	* Alpha PALCode emulation is in a very early stage and is not sufficient
	25	to run any real OS. The alpha-softmmu target is not enabled for now.
	26	* no hardware platform description is implemented
	27	* there might be problems in the Alpha PALCode dedicated instructions
	28	that would prevent to use a native PALCode image.