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comparison src/m/mips.h @ 442:abe6d1db359e r21-2-36

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Import from CVS: tag r21-2-36
author cvs
date Mon, 13 Aug 2007 11:35:02 +0200
parents 3ecd8885ac67
children c69610198c35
comparison
equal deleted inserted replaced
441:72a7cfa4a488 442:abe6d1db359e
27 NOTE-START 27 NOTE-START
28 Use m-mips4.h for RISCOS version 4; use s-bsd4-3.h with the BSD world. 28 Use m-mips4.h for RISCOS version 4; use s-bsd4-3.h with the BSD world.
29 Note that the proper m- file for the Decstation is m-pmax.h. 29 Note that the proper m- file for the Decstation is m-pmax.h.
30 NOTE-END */ 30 NOTE-END */
31 31
32 /* Define WORD_MACHINE if addresses and such have
33 * to be corrected before they can be used as byte counts. */
34
35 #undef WORD_MACHINE
36
37 /* Define how to take a char and sign-extend into an int.
38 On machines where char is signed, this is a no-op. */
39
40 #define SIGN_EXTEND_CHAR(c) ((signed char)(c))
41
42 /* Now define a symbol for the cpu type, if your compiler 32 /* Now define a symbol for the cpu type, if your compiler
43 does not define it automatically: 33 does not define it automatically:
44 Ones defined so far include vax, m68000, ns16000, pyramid, 34 Ones defined so far include vax, m68000, ns16000, pyramid,
45 orion, tahoe, APOLLO and many others */ 35 orion, tahoe, APOLLO and many others */
46 #ifndef mips 36 #ifndef mips
47 # define mips 37 # define mips
48 #endif 38 #endif
49
50 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
51 the bit field into an int. In other words, if bit fields
52 are always unsigned.
53
54 If you use NO_UNION_TYPE, this flag does not matter. */
55
56 #define EXPLICIT_SIGN_EXTEND
57 39
58 /* Data type of load average, as read out of kmem. */ 40 /* Data type of load average, as read out of kmem. */
59 41
60 #define LOAD_AVE_TYPE long 42 #define LOAD_AVE_TYPE long
61 43
73 /* Define CANNOT_DUMP on machines where unexec does not work. 55 /* Define CANNOT_DUMP on machines where unexec does not work.
74 Then the function dump-emacs will not be defined 56 Then the function dump-emacs will not be defined
75 and temacs will do (load "loadup") automatically unless told otherwise. */ 57 and temacs will do (load "loadup") automatically unless told otherwise. */
76 58
77 #undef CANNOT_DUMP 59 #undef CANNOT_DUMP
78
79 /* Define VIRT_ADDR_VARIES if the virtual addresses of
80 pure and impure space as loaded can vary, and even their
81 relative order cannot be relied on.
82
83 Otherwise Emacs assumes that text space precedes data space,
84 numerically. */
85
86 /* #define VIRT_ADDR_VARIES */
87 60
88 /* Define C_ALLOCA if this machine does not support a true alloca 61 /* Define C_ALLOCA if this machine does not support a true alloca
89 and the one written in C should be used instead. 62 and the one written in C should be used instead.
90 Define HAVE_ALLOCA to say that the system provides a properly 63 Define HAVE_ALLOCA to say that the system provides a properly
91 working alloca function and it should be used. 64 working alloca function and it should be used.
114 /* Describe layout of the address space in an executing process. */ 87 /* Describe layout of the address space in an executing process. */
115 88
116 #ifdef linux 89 #ifdef linux
117 #define TEXT_START 0x00400000 90 #define TEXT_START 0x00400000
118 #define DATA_START 0x10000000 91 #define DATA_START 0x10000000
119 #define DATA_SEG_BITS 0x10000000
120 #else /* !linux */ 92 #else /* !linux */
121 #define TEXT_START 0x400000 93 #define TEXT_START 0x400000
122 #define DATA_START 0x800000 94 #define DATA_START 0x800000
123 #endif /* linux */ 95 #endif /* linux */
124 96