1 /* XCOFF definitions. These are needed in dbxout.c, final.c,
4 #define ASM_STABS_OP ".stabx"
6 /* Tags and typedefs are C_DECL in XCOFF, not C_LSYM. */
8 #define DBX_TYPE_DECL_STABS_CODE N_DECL
10 /* Use the XCOFF predefined type numbers. */
12 /* ??? According to metin, typedef stabx must go in text control section,
13 but he did not make this changes everywhere where such typedef stabx
14 can be emitted, so it is really needed or not? */
16 #define DBX_OUTPUT_STANDARD_TYPES(SYMS) \
19 xcoff_output_standard_types (SYMS); \
22 /* Any type with a negative type index has already been output. */
24 #define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0)
26 /* Must use N_STSYM for static const variables (those in the text section)
29 #define DBX_STATIC_CONST_VAR_CODE N_STSYM
31 /* For static variables, output code to define the start of a static block.
33 ??? The IBM rs6000/AIX assembler has a bug that causes bss block debug
34 info to be occasionally lost. A simple example is this:
36 The commands `gcc -g -c tmp.c; dump -t tmp.o' gives
37 [10] m 0x00000016 1 0 0x8f 0x0000 .bs
38 [11] m 0x00000000 1 0 0x90 0x0000 .es
40 [21] m 0x00000000 -2 0 0x85 0x0000 b:S-1
41 which is wrong. The `b:S-1' must be between the `.bs' and `.es'.
42 We can apparently work around the problem by forcing the text section
43 (even if we are already in the text section) immediately before outputting
44 the `.bs'. This should be fixed in the next major AIX release (3.3?). */
46 #define DBX_STATIC_BLOCK_START(ASMFILE,CODE) \
48 if ((CODE) == N_STSYM) \
49 fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\
50 else if ((CODE) == N_LCSYM) \
52 fprintf ((ASMFILE), "%s\n", TEXT_SECTION_ASM_OP); \
53 fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \
57 /* For static variables, output code to define the end of a static block. */
59 #define DBX_STATIC_BLOCK_END(ASMFILE,CODE) \
61 if ((CODE) == N_STSYM || (CODE) == N_LCSYM) \
62 fputs ("\t.es\n", (ASMFILE)); \
65 /* We must use N_RPYSM instead of N_RSYM for register parameters. */
67 #define DBX_REGPARM_STABS_CODE N_RPSYM
69 /* We must use 'R' instead of 'P' for register parameters. */
71 #define DBX_REGPARM_STABS_LETTER 'R'
73 /* Define our own finish symbol function, since xcoff stabs have their
74 own different format. */
76 #define DBX_FINISH_SYMBOL(SYM) \
78 if (current_sym_addr && current_sym_code == N_FUN) \
79 fprintf (asmfile, "\",."); \
81 fprintf (asmfile, "\","); \
82 /* If we are writing a function name, we must ensure that \
83 there is no storage-class suffix on the name. */ \
84 if (current_sym_addr && current_sym_code == N_FUN \
85 && GET_CODE (current_sym_addr) == SYMBOL_REF) \
87 char *_p = XSTR (current_sym_addr, 0); \
89 fprintf (asmfile, "%s", _p+1); \
91 for (; *_p != '[' && *_p; _p++) \
92 fprintf (asmfile, "%c", *_p); \
94 else if (current_sym_addr) \
95 output_addr_const (asmfile, current_sym_addr); \
96 else if (current_sym_code == N_GSYM) \
97 assemble_name (asmfile, XSTR (XEXP (DECL_RTL (sym), 0), 0)); \
99 fprintf (asmfile, "%d", current_sym_value); \
100 fprintf (asmfile, ",%d,0\n", stab_to_sclass (current_sym_code)); \
103 /* These are IBM XCOFF extensions we need to reference in dbxout.c
106 /* AIX XCOFF uses this for typedefs. This can have any value, since it is
107 only used for translation into a C_DECL storage class. */
111 /* AIX XCOFF uses this for parameters passed in registers. This can have
112 any value, since it is only used for translation into a C_RPSYM storage
118 /* Name of the current include file. */
120 extern char *xcoff_current_include_file
;
122 /* Names of bss and data sections. These should be unique names for each
125 extern char *xcoff_bss_section_name
;
126 extern char *xcoff_private_data_section_name
;
127 extern char *xcoff_read_only_section_name
;
129 /* Last source file name mentioned in a NOTE insn. */
131 extern char *xcoff_lastfile
;
133 /* Don't write out path name for main source file. */
134 #define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(FILE,FILENAME)
136 /* Write out main source file name using ".file" rather than ".stabs".
137 We don't actually do this here, because the assembler gets confused if there
138 is more than one .file directive. ASM_FILE_START in config/rs6000/rs6000.h
139 is already emitting a .file directory, so we don't output one here also.
140 Initialize xcoff_lastfile. */
141 #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(FILE,FILENAME) \
142 xcoff_lastfile = (FILENAME)
144 /* If we are still in an include file, its end must be marked. */
145 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
147 if (xcoff_current_include_file) \
149 fputs ("\t.ei\t", (FILE)); \
150 output_quoted_string ((FILE), xcoff_current_include_file); \
151 putc ('\n', (FILE)); \
152 xcoff_current_include_file = NULL; \
156 /* Do not break .stabs pseudos into continuations. */
157 #define DBX_CONTIN_LENGTH 0
159 /* Don't try to use the `x' type-cross-reference character in DBX data.
160 Also has the consequence of putting each struct, union or enum
161 into a separate .stabs, containing only cross-refs to the others. */
164 /* We must put stabs in the text section. If we don't the assembler
165 won't handle them correctly; it will sometimes put stabs where gdb
168 #define DEBUG_SYMS_TEXT