xref: /386bsd/usr/src/usr.bin/g++/g++/obj/tm.h (revision a2142627)
1 /* Configuration for an i386 running 386BSD as the target machine.  */
2 
3 /* This is tested by i386gas.h.  */
4 #define YES_UNDERSCORES
5 
6 #include "i386/gstabs.h"
7 
8 /* Get perform_* macros to build libgcc.a.  */
9 #include "i386/perform.h"
10 
11 #undef CPP_PREDEFINES
12 #define CPP_PREDEFINES "-Dunix -Di386 -D__386BSD__"
13 
14 /* Like the default, except no -lg.  */
15 #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
16 
17 #undef SIZE_TYPE
18 #define SIZE_TYPE "unsigned int"
19 
20 #undef PTRDIFF_TYPE
21 #define PTRDIFF_TYPE "int"
22 
23 #undef WCHAR_TYPE
24 #define WCHAR_TYPE "short unsigned int"
25 
26 #define WCHAR_UNSIGNED 1
27 
28 #undef WCHAR_TYPE_SIZE
29 #define WCHAR_TYPE_SIZE 16
30 
31 /* 386BSD does have atexit.  */
32 
33 #define HAVE_ATEXIT
34 
35 /* Redefine this to use %eax instead of %edx.  */
36 #undef FUNCTION_PROFILER
37 #define FUNCTION_PROFILER(FILE, LABELNO)  \
38 {									\
39   if (flag_pic)								\
40     {									\
41       fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%eax\n",		\
42 	       LPREFIX, (LABELNO));					\
43       fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n");			\
44     }									\
45   else									\
46     {									\
47       fprintf (FILE, "\tmovl $%sP%d,%%eax\n", LPREFIX, (LABELNO));	\
48       fprintf (FILE, "\tcall mcount\n");				\
49     }									\
50 }
51 
52 /* There are conflicting reports about whether this system uses
53    a different assembler syntax.  wilson@cygnus.com says # is right.  */
54 #undef COMMENT_BEGIN
55 #define COMMENT_BEGIN "#"
56 
57 #undef ASM_APP_ON
58 #define ASM_APP_ON "#APP\n"
59 
60 #undef ASM_APP_OFF
61 #define ASM_APP_OFF "#NO_APP\n"
62 
63 /* The following macros are stolen from i386v4.h */
64 /* These have to be defined to get PIC code correct */
65 
66 /* This is how to output an element of a case-vector that is relative.
67    This is only used for PIC code.  See comments by the `casesi' insn in
68    i386.md for an explanation of the expression this outputs. */
69 
70 #undef ASM_OUTPUT_ADDR_DIFF_ELT
71 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
72   fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
73 
74 /* Indicate that jump tables go in the text section.  This is
75    necessary when compiling PIC code.  */
76 
77 #define JUMP_TABLES_IN_TEXT_SECTION
78 
79 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
80    we want to retain compatibility with older gcc versions.  */
81 #define DEFAULT_PCC_STRUCT_RETURN 0
82