X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gas%2Fconfig%2Ftc-sh.h;h=6537a6dda3356c6b45e7670ecbb686c5c2a6cab3;hb=7c2be35cae27fc6965fea7023a438a8a9872af01;hp=f4278c206226a3cff30a256b0b8be2632693e0c1;hpb=30727aa6d12fb866494020c0b62ab265a2bdcdfe;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/config/tc-sh.h b/gas/config/tc-sh.h index f4278c2062..6537a6dda3 100644 --- a/gas/config/tc-sh.h +++ b/gas/config/tc-sh.h @@ -1,5 +1,6 @@ /* This file is tc-sh.h - Copyright (C) 1993, 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc. + Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, + 2003 Free Software Foundation, Inc. This file is part of GAS, the GNU Assembler. @@ -20,18 +21,18 @@ #define TC_SH -#define TARGET_BYTES_BIG_ENDIAN 0 - #define TARGET_ARCH bfd_arch_sh #if ANSI_PROTOTYPES +/* The type fixS is defined (to struct fix) in write.h, but write.h uses + definitions from this file. To avoid problems with including write.h + after the "right" definitions, don't; just forward-declare struct fix + here. */ +struct fix; struct segment_info_struct; struct internal_reloc; #endif -/* Whether in little endian mode. */ -extern int shl; - /* Whether -relax was used. */ extern int sh_relax; @@ -41,6 +42,9 @@ extern int sh_small; /* Don't try to break words. */ #define WORKING_DOT_WORD +/* All SH instructions are multiples of 16 bits. */ +#define DWARF2_LINE_MIN_INSN_LENGTH 2 + /* We require .long, et. al., to be aligned correctly. */ #define md_cons_align(nbytes) sh_cons_align (nbytes) extern void sh_cons_align PARAMS ((int)); @@ -50,30 +54,60 @@ extern void sh_cons_align PARAMS ((int)); #define HANDLE_ALIGN(frag) sh_handle_align (frag) extern void sh_handle_align PARAMS ((fragS *)); +#define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2) + /* We need to force out some relocations when relaxing. */ #define TC_FORCE_RELOCATION(fix) sh_force_relocation (fix) -extern int sh_force_relocation (); +extern int sh_force_relocation PARAMS ((struct fix *)); -#ifdef OBJ_ELF -#define obj_fix_adjustable(fixP) sh_fix_adjustable(fixP) -struct fix; -extern boolean sh_fix_adjustable PARAMS ((struct fix *)); +/* This macro decides whether a particular reloc is an entry in a + switch table. It is used when relaxing, because the linker needs + to know about all such entries so that it can adjust them if + necessary. */ + +#ifdef BFD_ASSEMBLER +#define SWITCH_TABLE_CONS(FIX) (0) +#else +#define SWITCH_TABLE_CONS(FIX) \ + ((FIX)->fx_r_type == 0 \ + && ((FIX)->fx_size == 2 \ + || (FIX)->fx_size == 1 \ + || (FIX)->fx_size == 4)) #endif +#define SWITCH_TABLE(FIX) \ + ((FIX)->fx_addsy != NULL \ + && (FIX)->fx_subsy != NULL \ + && S_GET_SEGMENT ((FIX)->fx_addsy) == text_section \ + && S_GET_SEGMENT ((FIX)->fx_subsy) == text_section \ + && ((FIX)->fx_r_type == BFD_RELOC_32 \ + || (FIX)->fx_r_type == BFD_RELOC_16 \ + || (FIX)->fx_r_type == BFD_RELOC_8 \ + || SWITCH_TABLE_CONS (FIX))) + +#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \ + (! SEG_NORMAL (SEC) \ + || TC_FORCE_RELOCATION (FIX) \ + || (sh_relax && SWITCH_TABLE (FIX))) + +/* Don't complain when we leave fx_subsy around. */ +#define TC_VALIDATE_FIX_SUB(FIX) \ + (sh_relax && SWITCH_TABLE (FIX)) + +#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC) +extern long md_pcrel_from_section PARAMS ((struct fix *, segT)); + #define IGNORE_NONSTANDARD_ESCAPES -#define LISTING_HEADER (shl ? "Hitachi Super-H GAS Little Endian" : "Hitachi Super-H GAS Big Endian") +#define LISTING_HEADER \ + (!target_big_endian \ + ? "Hitachi Super-H GAS Little Endian" : "Hitachi Super-H GAS Big Endian") #define md_operand(x) extern const struct relax_type md_relax_table[]; #define TC_GENERIC_RELAX_TABLE md_relax_table -/* We use a special alignment function to insert the correct nop - pattern. */ -extern int sh_do_align PARAMS ((int, const char *, int, int)); -#define md_do_align(n,fill,len,max,l) if (sh_do_align (n,fill,len,max)) goto l - /* We record, for each section, whether we have most recently output a CODE reloc or a DATA reloc. */ struct sh_segment_info_type @@ -99,17 +133,18 @@ extern void sh_flush_pending_output PARAMS ((void)); #endif extern void sh_frob_file PARAMS ((void)); + #ifdef OBJ_COFF /* COFF specific definitions. */ #define DO_NOT_STRIP 0 -/* This macro translates between an internal fix and an coff reloc type */ +/* This macro translates between an internal fix and a coff reloc type. */ #define TC_COFF_FIX2RTYPE(fix) ((fix)->fx_r_type) #define BFD_ARCH TARGET_ARCH -#define COFF_MAGIC (shl ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG) +#define COFF_MAGIC (!target_big_endian ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG) /* We need to write out relocs which have not been completed. */ #define TC_COUNT_RELOC(fix) ((fix)->fx_addsy != NULL) @@ -129,14 +164,20 @@ extern void sh_coff_reloc_mangle #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag) extern int tc_coff_sizemachdep PARAMS ((fragS *)); +#ifdef BFD_ASSEMBLER +#define SEG_NAME(SEG) segment_name (SEG) +#else +#define SEG_NAME(SEG) obj_segment_name (SEG) +#endif + /* We align most sections to a 16 byte boundary. */ -#define SUB_SEGMENT_ALIGN(SEG) \ - (strncmp (obj_segment_name (SEG), ".stabstr", 8) == 0 \ - ? 0 \ - : ((strncmp (obj_segment_name (SEG), ".stab", 5) == 0 \ - || strcmp (obj_segment_name (SEG), ".ctors") == 0 \ - || strcmp (obj_segment_name (SEG), ".dtors") == 0) \ - ? 2 \ +#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \ + (strncmp (SEG_NAME (SEG), ".stabstr", 8) == 0 \ + ? 0 \ + : ((strncmp (SEG_NAME (SEG), ".stab", 5) == 0 \ + || strcmp (SEG_NAME (SEG), ".ctors") == 0 \ + || strcmp (SEG_NAME (SEG), ".dtors") == 0) \ + ? 2 \ : (sh_small ? 2 : 4))) #endif /* OBJ_COFF */ @@ -146,9 +187,77 @@ extern int tc_coff_sizemachdep PARAMS ((fragS *)); /* Whether or not the target is big endian */ extern int target_big_endian; +#ifdef TE_LINUX +#define TARGET_FORMAT (!target_big_endian ? "elf32-sh-linux" : "elf32-shbig-linux") +#elif defined(TE_NetBSD) +#define TARGET_FORMAT (!target_big_endian ? "elf32-shl-nbsd" : "elf32-sh-nbsd") +#else +#define TARGET_FORMAT (!target_big_endian ? "elf32-shl" : "elf32-sh") +#endif -#define TARGET_FORMAT (shl ? "elf32-shl" : "elf32-sh") +#define elf_tc_final_processing sh_elf_final_processing +extern void sh_elf_final_processing PARAMS ((void)); + +#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */ + +#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_" + +/* This is the relocation type for direct references to + GLOBAL_OFFSET_TABLE. It comes up in complicated expressions such + as _GLOBAL_OFFSET_TABLE_+[.-.L284], which cannot be expressed + normally with the regular expressions. The fixup specified here + when used at runtime implies that we should add the address of the + GOT to the specified location, and as a result we have simplified + the expression into something we can use. */ +#define TC_RELOC_GLOBAL_OFFSET_TABLE BFD_RELOC_SH_GOTPC + +#define tc_fix_adjustable(FIX) sh_fix_adjustable(FIX) +extern bfd_boolean sh_fix_adjustable PARAMS ((struct fix *)); + +/* Values passed to md_apply_fix3 don't include symbol values. */ +#define MD_APPLY_SYM_VALUE(FIX) 0 + +/* This expression evaluates to true if the relocation is for a local object + for which we still want to do the relocation at runtime. False if we + are willing to perform this relocation while building the .o file. + + We can't resolve references to the GOT or the PLT when creating the + object file, since these tables are only created by the linker. + Also, if the symbol is global, weak, common or not defined, the + assembler can't compute the appropriate reloc, since its location + can only be determined at link time. */ + +#define TC_FORCE_RELOCATION_LOCAL(FIX) \ + (!(FIX)->fx_pcrel \ + || (FIX)->fx_plt \ + || (FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \ + || (FIX)->fx_r_type == BFD_RELOC_32_GOT_PCREL \ + || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC \ + || TC_FORCE_RELOCATION (FIX)) + +/* This keeps the subtracted symbol around, for use by PLT_PCREL + relocs. */ +#define TC_FORCE_RELOCATION_SUB_ABS(FIX) \ + ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL) + +/* Don't complain when we leave fx_subsy around. */ +#undef TC_VALIDATE_FIX_SUB +#define TC_VALIDATE_FIX_SUB(FIX) \ + ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \ + || (sh_relax && SWITCH_TABLE (FIX))) + +#define md_parse_name(name, exprP, nextcharP) \ + sh_parse_name ((name), (exprP), (nextcharP)) +int sh_parse_name PARAMS ((char const *name, + expressionS *exprP, + char *nextchar)); + +#define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP) \ + sh_cons_fix_new ((FRAG), (OFF), (LEN), (EXP)) +void sh_cons_fix_new PARAMS ((fragS *, int, int, expressionS *)); + +/* This is used to construct expressions out of @GOTOFF, @PLT and @GOT + symbols. The relocation type is stored in X_md. */ +#define O_PIC_reloc O_md1 #endif /* OBJ_ELF */ - -/* end of tc-sh.h */