haraldwolff/qemu-patch-raspberry4
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Fix PowerPC 32 emulation on 64 bits hosts:

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we can use 64 bits registers but not pretend page is 1kB long
As it seems most Linux programs assume page-size is 4kB, never allow
1kB pages for user-mode only emulation.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3182 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer 2007-09-18 11:17:30 +00:00
parent e2b577e5e5
commit d9d7210c7d
1 changed files with 20 additions and 12 deletions
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32
target-ppc/cpu.h
View file

@ -23,19 +23,10 @@
#include "config.h"
#include <inttypes.h>
#if !defined(TARGET_PPCEMB)
#if defined(TARGET_PPC64) || (HOST_LONG_BITS >= 64)
/* When using 64 bits temporary registers,
* we can use 64 bits GPR with no extra cost
*/
#define TARGET_PPCEMB
#endif
#endif
#if defined (TARGET_PPC64)
typedef uint64_t ppc_gpr_t;
#define TARGET_LONG_BITS 64
#define TARGET_GPR_BITS 64
#define TARGET_LONG_BITS 64
#define REGX "%016" PRIx64
#define TARGET_PAGE_BITS 12
#elif defined(TARGET_PPCEMB)
@ -43,15 +34,32 @@ typedef uint64_t ppc_gpr_t;
#define TARGET_PHYS_ADDR_BITS 64
/* GPR are 64 bits: used by vector extension */
typedef uint64_t ppc_gpr_t;
#define TARGET_LONG_BITS 32
#define TARGET_GPR_BITS 64
#define TARGET_LONG_BITS 32
#define REGX "%016" PRIx64
#if defined(CONFIG_USER_ONLY)
/* It looks like a lot of Linux programs assume page size
* is 4kB long. This is evil, but we have to deal with it...
*/
#define TARGET_PAGE_BITS 12
#else
/* Pages can be 1 kB small */
#define TARGET_PAGE_BITS 10
#endif
#else
#if (HOST_LONG_BITS >= 64)
/* When using 64 bits temporary registers,
* we can use 64 bits GPR with no extra cost
* It's even an optimization as it will prevent
* the compiler to do unuseful masking in the micro-ops.
*/
typedef uint64_t ppc_gpr_t;
#define TARGET_GPR_BITS 64
#else
typedef uint32_t ppc_gpr_t;
#define TARGET_LONG_BITS 32
#define TARGET_GPR_BITS 32
#endif
#define TARGET_LONG_BITS 32
#define REGX "%08" PRIx32
#define TARGET_PAGE_BITS 12
#endif