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author | peter <peter@FreeBSD.org> | 1996-09-18 05:35:50 +0000 |
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committer | peter <peter@FreeBSD.org> | 1996-09-18 05:35:50 +0000 |
commit | d4691e641ba47cb86eef80f5c879e13f9d961724 (patch) | |
tree | 5b7ea73fc49c8998d9dc87d3eeff5b96439e6856 /contrib/gcc/xcoffout.h | |
download | FreeBSD-src-d4691e641ba47cb86eef80f5c879e13f9d961724.zip FreeBSD-src-d4691e641ba47cb86eef80f5c879e13f9d961724.tar.gz |
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the
non-i386, non-unix, and generatable files have been trimmed, but can easily
be added in later if needed.
gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's
handy to have both available for reference for such little cost.
The freebsd-specific changes will then be committed, and once the dust has
settled, the bmakefiles will be committed to use this code.
Diffstat (limited to 'contrib/gcc/xcoffout.h')
-rw-r--r-- | contrib/gcc/xcoffout.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/contrib/gcc/xcoffout.h b/contrib/gcc/xcoffout.h new file mode 100644 index 0000000..432a5de --- /dev/null +++ b/contrib/gcc/xcoffout.h @@ -0,0 +1,180 @@ +/* XCOFF definitions. These are needed in dbxout.c, final.c, + and xcoffout.h. */ + +#define ASM_STABS_OP ".stabx" + +/* Tags and typedefs are C_DECL in XCOFF, not C_LSYM. */ + +#define DBX_TYPE_DECL_STABS_CODE N_DECL + +/* Use the XCOFF predefined type numbers. */ + +/* ??? According to metin, typedef stabx must go in text control section, + but he did not make this changes everywhere where such typedef stabx + can be emitted, so it is really needed or not? */ + +#define DBX_OUTPUT_STANDARD_TYPES(SYMS) \ +{ \ + text_section (); \ + xcoff_output_standard_types (SYMS); \ +} + +/* Any type with a negative type index has already been output. */ + +#define DBX_TYPE_DEFINED(TYPE) (TYPE_SYMTAB_ADDRESS (TYPE) < 0) + +/* Must use N_STSYM for static const variables (those in the text section) + instead of N_FUN. */ + +#define DBX_STATIC_CONST_VAR_CODE N_STSYM + +/* For static variables, output code to define the start of a static block. + + ??? The IBM rs6000/AIX assembler has a bug that causes bss block debug + info to be occasionally lost. A simple example is this: + int a; static int b; + The commands `gcc -g -c tmp.c; dump -t tmp.o' gives +[10] m 0x00000016 1 0 0x8f 0x0000 .bs +[11] m 0x00000000 1 0 0x90 0x0000 .es +... +[21] m 0x00000000 -2 0 0x85 0x0000 b:S-1 + which is wrong. The `b:S-1' must be between the `.bs' and `.es'. + We can apparently work around the problem by forcing the text section + (even if we are already in the text section) immediately before outputting + the `.bs'. This should be fixed in the next major AIX release (3.3?). */ + +#define DBX_STATIC_BLOCK_START(ASMFILE,CODE) \ +{ \ + if ((CODE) == N_STSYM) \ + fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\ + else if ((CODE) == N_LCSYM) \ + { \ + fprintf ((ASMFILE), "%s\n", TEXT_SECTION_ASM_OP); \ + fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \ + } \ +} + +/* For static variables, output code to define the end of a static block. */ + +#define DBX_STATIC_BLOCK_END(ASMFILE,CODE) \ +{ \ + if (current_sym_code == N_STSYM || current_sym_code == N_LCSYM) \ + fprintf (asmfile, "\t.es\n"); \ +} + +/* We must use N_RPYSM instead of N_RSYM for register parameters. */ + +#define DBX_REGPARM_STABS_CODE N_RPSYM + +/* We must use 'R' instead of 'P' for register parameters. */ + +#define DBX_REGPARM_STABS_LETTER 'R' + +/* Define our own finish symbol function, since xcoff stabs have their + own different format. */ + +#define DBX_FINISH_SYMBOL(SYM) \ +{ \ + if (current_sym_addr && current_sym_code == N_FUN) \ + fprintf (asmfile, "\",."); \ + else \ + fprintf (asmfile, "\","); \ + /* If we are writing a function name, we must ensure that \ + there is no storage-class suffix on the name. */ \ + if (current_sym_addr && current_sym_code == N_FUN \ + && GET_CODE (current_sym_addr) == SYMBOL_REF) \ + { \ + char *_p = XSTR (current_sym_addr, 0); \ + if (*_p == '*') \ + fprintf (asmfile, "%s", _p+1); \ + else \ + for (; *_p != '[' && *_p; _p++) \ + fprintf (asmfile, "%c", *_p); \ + } \ + else if (current_sym_addr) \ + output_addr_const (asmfile, current_sym_addr); \ + else if (current_sym_code == N_GSYM) \ + assemble_name (asmfile, XSTR (XEXP (DECL_RTL (sym), 0), 0)); \ + else \ + fprintf (asmfile, "%d", current_sym_value); \ + fprintf (asmfile, ",%d,0\n", stab_to_sclass (current_sym_code)); \ +} + +/* These are IBM XCOFF extensions we need to reference in dbxout.c + and xcoffout.c. */ + +/* AIX XCOFF uses this for typedefs. This can have any value, since it is + only used for translation into a C_DECL storage class. */ +#ifndef N_DECL +#define N_DECL 0x8c +#endif +/* AIX XCOFF uses this for parameters passed in registers. This can have + any value, since it is only used for translation into a C_RPSYM storage + class. */ +#ifndef N_RPSYM +#define N_RPSYM 0x8e +#endif + +/* The line number of the beginning of the current function. + xcoffout.c needs this so that it can output relative linenumbers. */ + +extern int xcoff_begin_function_line; + +/* Name of the current include file. */ + +extern char *xcoff_current_include_file; + +/* Name of the current function file. This is the file the `.bf' is + emitted from. In case a line is emitted from a different file, + (by including that file of course), then the line number will be + absolute. */ + +extern char *xcoff_current_function_file; + +/* Names of bss and data sections. These should be unique names for each + compilation unit. */ + +extern char *xcoff_bss_section_name; +extern char *xcoff_private_data_section_name; +extern char *xcoff_read_only_section_name; + +/* Last source file name mentioned in a NOTE insn. */ + +extern char *xcoff_lastfile; + +/* Don't write out path name for main source file. */ +#define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(FILE,FILENAME) + +/* Write out main source file name using ".file" rather than ".stabs". + We don't actually do this here, because the assembler gets confused if there + is more than one .file directive. ASM_FILE_START in config/rs6000/rs6000.h + is already emitting a .file directory, so we don't output one here also. + Initialize xcoff_lastfile. */ +#define DBX_OUTPUT_MAIN_SOURCE_FILENAME(FILE,FILENAME) \ + xcoff_lastfile = input_file_name + +/* If we are still in an include file, its end must be marked. */ +#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \ +{ \ + if (xcoff_current_include_file) \ + { \ + fprintf (FILE, "\t.ei\t"); \ + output_quoted_string (FILE, xcoff_current_include_file); \ + fprintf (FILE, "\n"); \ + xcoff_current_include_file = NULL; \ + } \ +} + +/* Do not break .stabs pseudos into continuations. */ +#define DBX_CONTIN_LENGTH 0 + +/* Don't try to use the `x' type-cross-reference character in DBX data. + Also has the consequence of putting each struct, union or enum + into a separate .stabs, containing only cross-refs to the others. */ +#define DBX_NO_XREFS + +/* We must put stabs in the text section. If we don't the assembler + won't handle them correctly; it will sometimes put stabs where gdb + can't find them. */ + +#define DEBUG_SYMS_TEXT |