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- fix [ 648579 ] Mac OSX >>PANIC<< FPU_printall

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. correct the signbyte macro for big endian systems
  . group all the endian specific stuff of fpû_emu.h in one place
This commit is contained in:
Christophe Bothamy 2002-12-11 12:54:19 +00:00
parent 7dc434d872
commit e94c6c7d5a
1 changed files with 17 additions and 14 deletions
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31
bochs/fpu/fpu_emu.h
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@ -1,6 +1,6 @@
/*---------------------------------------------------------------------------+
| fpu_emu.h |
| $Id: fpu_emu.h,v 1.7 2002-12-10 22:40:16 cbothamy Exp $
| $Id: fpu_emu.h,v 1.8 2002-12-11 12:54:19 cbothamy Exp $
| |
| Copyright (C) 1992,1993,1994,1997 |
| W. Metzenthen, 22 Parker St, Ormond, Vic 3163, |
@ -139,26 +139,34 @@ struct address {
// E - exponent
// A - aligment
struct fpu__reg {
#ifdef EMU_BIG_ENDIAN
struct fpu__reg {
u16 aligment1, aligment2, aligment3;
s16 exp; /* Signed quantity used in internal arithmetic. */
u32 sigh;
u32 sigl;
#else
u32 sigl;
u32 sigh;
s16 exp; /* Signed quantity used in internal arithmetic. */
u16 aligment1, aligment2, aligment3;
#endif
} GCC_ATTRIBUTE((aligned(16), packed));
#ifdef EMU_BIG_ENDIAN
#define MAKE_REG(s,e,l,h) { 0,0,0, \
((EXTENDED_Ebias+(e)) | ((SIGN_##s != 0)*0x8000)) , h, l}
#define signbyte(a) (((u_char *)(a))[6])
#else
struct fpu__reg {
u32 sigl;
u32 sigh;
s16 exp; /* Signed quantity used in internal arithmetic. */
u16 aligment1, aligment2, aligment3;
} GCC_ATTRIBUTE((aligned(16), packed));
#define MAKE_REG(s,e,l,h) { l, h, \
((EXTENDED_Ebias+(e)) | ((SIGN_##s != 0)*0x8000)), 0,0,0 }
#define signbyte(a) (((u_char *)(a))[9])
#endif
typedef void (*FUNC)(void);
@ -194,11 +202,6 @@ extern u_char const data_sizes_16[32];
/* push() does not affect the tags */
#define push() { top--; }
#ifdef EMU_BIG_ENDIAN
#define signbyte(a) (((u_char *)(a))[8])
#else
#define signbyte(a) (((u_char *)(a))[9])
#endif
#define getsign(a) (signbyte(a) & 0x80)
#define setsign(a,b) { if (b) signbyte(a) |= 0x80; else signbyte(a) &= 0x7f; }
#define copysign(a,b) { if (getsign(a)) signbyte(b) |= 0x80; \