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comparison src/m/acorn.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 943eaba38521
comparison
equal deleted inserted replaced
441:72a7cfa4a488 442:abe6d1db359e
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */ 19 Boston, MA 02111-1307, USA. */
20 20
21 /* Synched up with: FSF 19.31. */ 21 /* Synched up with: FSF 19.31. */
22 22
23 /* Define WORD_MACHINE if addresses and such have
24 * to be corrected before they can be used as byte counts. */
25
26 #undef WORD_MACHINE
27
28 /* Define how to take a char and sign-extend into an int.
29 On machines where char is signed, this is a no-op. */
30
31 /* ARM note - The RISCiX Norcroft C Compiler has ALL
32 non-32-bit types as unsigned */
33
34 #define SIGN_EXTEND_CHAR(c) (((int)(c) << 24) >> 24)
35
36 /* Now define a symbol for the cpu type, if your compiler 23 /* Now define a symbol for the cpu type, if your compiler
37 does not define it automatically: 24 does not define it automatically:
38 Ones defined so far include vax, m68000, ns16000, pyramid, 25 Ones defined so far include vax, m68000, ns16000, pyramid,
39 orion, tahoe, APOLLO and many others */ 26 orion, tahoe, APOLLO and many others */
40 27
41 /* ARM note - this is done by the Norcroft compiler - symbol is `__arm' */ 28 /* ARM note - this is done by the Norcroft compiler - symbol is `__arm' */
42
43 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
44 the bit field into an int. In other words, if bit fields
45 are always unsigned.
46
47 If you use NO_UNION_TYPE, this flag does not matter. */
48
49 #define EXPLICIT_SIGN_EXTEND
50 29
51 #ifdef LDAV_SYMBOL 30 #ifdef LDAV_SYMBOL
52 #undef LDAV_SYMBOL 31 #undef LDAV_SYMBOL
53 #endif 32 #endif
54 33
82 /* Define CANNOT_DUMP on machines where unexec does not work. 61 /* Define CANNOT_DUMP on machines where unexec does not work.
83 Then the function dump-emacs will not be defined 62 Then the function dump-emacs will not be defined
84 and temacs will do (load "loadup") automatically unless told otherwise. */ 63 and temacs will do (load "loadup") automatically unless told otherwise. */
85 64
86 #undef CANNOT_DUMP 65 #undef CANNOT_DUMP
87
88 /* Define VIRT_ADDR_VARIES if the virtual addresses of
89 pure and impure space as loaded can vary, and even their
90 relative order cannot be relied on.
91
92 Otherwise Emacs assumes that text space precedes data space,
93 numerically. */
94
95 #undef VIRT_ADDR_VARIES
96 66
97 /* This prevents Emacs dumping an unsqueezed binary with the 67 /* This prevents Emacs dumping an unsqueezed binary with the
98 SQUEEZE bit set in the magic number. */ 68 SQUEEZE bit set in the magic number. */
99 69
100 #define ADJUST_EXEC_HEADER {hdr.a_magic &= ~MF_SQUEEZED;} 70 #define ADJUST_EXEC_HEADER {hdr.a_magic &= ~MF_SQUEEZED;}