Exact

Exact Union RegExp

Peter Johnson 23e53d41ce Fix #44 by adding support for WRT special symbols (e.g. [sym WRT ..plt] and ... similar) to ELF. They are used identically to NASM's ELF shared object support. Due to limited WRT support throughout libyasm, this caused a lot of rippling changes. A major cleanup needs to be performed later to clear some of this hackiness up. * elf-machine.h (func_accepts_size_t): Rename to func_accepts_reloc(). (func_map_reloc_info_to_type): Add parameter ssyms for array of special syms. (elf_machine_ssym): New; for defining machine-specific special syms. (elf_machine_handler): Change accepts_reloc_size to accepts_reloc. Add new ssyms and num_ssyms members. * elf-x86-x86.c (ssym_index): New; this allows nice indexing of ssym arrays. (elf_x86_x86_accepts_reloc): Rename of elf_x86_x86_accepts_reloc_size. Add support for various WRT ssyms. (elf_x86_x86_map_reloc_info_to_type): Add support for various WRT ssyms. (elf_x86_x86_ssyms): New array of supported special symbols. (elf_machine_handler_x86_x86): Update for above changes/additions. * elf-x86-amd64.c (ssym_index, elf_x86_amd64_accepts_reloc) (elf_x86_amd64_map_reloc_info_to_type, elf_x86_amd64_ssyms) (elf_machine_handler_x86_amd64): Likewise. * elf.h (elf_reloc_entry): Add wrt member. (elf_set_arch): Add symtab parameter. (elf_is_wrt_sym_relative): New. (elf_reloc_entry_create): Add wrt parameter. * elf.c (elf_set_arch): Allocate special syms from machine level. (elf_is_wrt_sym_relative): New; search special syms, and report whether a WRT ssym should be symbol-relative or section-relative. (elf_reloc_entry_create): Pass WRT and ssyms info down to machine level. * elf-objfmt.c (yasm_objfmt_elf): Add dotdotsym (..sym) symrec member. (elf_objfmt_create): Pass symtab to elf_set_arch(). Allocate ..sym symbol. (elf_objfmt_output_reloc): Update for elf_reloc_entry_create() change. (elf_objfmt_output_expr): Handle WRT ssym. Make relocation symbol-relative rather than section-relative if either WRT ..sym or WRT ssym that machine level desires to be symbol-relative. * symrec.c (yasm_symrec_get_label): Check for NULL sym->value.precbc; this is now possible due to the user-accessible special symbols that ELF et al create, which all have NULL precbc's. * expr.c (yasm_expr_extract_symrec): Recurse into IDENT's to make more exprs acceptable. * coretype.h (yasm_output_reloc_func): Remove rel parameter as it shouldn't be needed and complexifies writing of the reloc functions. * stabs-dbgfmt.c (stabs_bc_stab_tobytes): Update output_reloc() call. * elf-objfmt.c (elf_objfmt_output_reloc): Update to match. * arch.h (yasm_arch_module): Add intnum_fixup_rel() function, change intnum_tobytes() to not take rel parameter. The rel functionality is being separated because sometimes it's desirable not to put the data into the written intnum (e.g. ELF RELA relocations). (YASM_ARCH_VERSION): Bump due to above change. (yasm_arch_intnum_fixup_rel): New wrapper. (yasm_arch_intnum_tobytes): Update wrapper (removing rel). * lc3bbc.c (yasm_lc3b__intnum_fixup_rel): New, with code from: (yasm_lc3b__intnum_tobytes): Remove rel code. * lc3barch.h (yasm_lc3b__intnum_fixup_rel): New. (yasm_lc3b__intnum_tobytes): Update. * lc3barch.c (yasm_lc3b_LTX_arch): Reference yasm_lc3b__intnum_fixup_rel(). * x86bc.c (yasm_x86__intnum_fixup_rel): New, with code from: (yasm_x86__intnum_tobytes): Remove rel code. * x86arch.h (yasm_x86__intnum_fixup_rel): New. (yasm_x86__intnum_tobytes): Update. * x86arch.c (yasm_x86_LTX_arch): Reference yasm_x86__intnum_fixup_rel(). * xdf-objfmt.c (xdf_objfmt_output_expr): Update to use intnum_fixup_rel() / new intnum_tobytes(). * bin-objfmt.c (bin_objfmt_output_expr): Likewise. * coff-objfmt.c (coff_objfmt_output_expr): Likewise. * elf-objfmt.c (elf_objfmt_output_expr: Likewise. * nasm-listfmt.c (nasm_listfmt_output_expr): Likewise. * nasm-bison.y: Change precedence of WRT and : operators: instead of being the strongest binders they are now the weakest. This is needed to correctly parse and be able to split WRT expressions. WRT handling is still somewhat of a hack throughout yasm; we'll fix this later. * x86expr.c (x86_expr_checkea_distcheck_reg): Don't check for WRT here. (x86_expr_checkea_getregusage): Add new wrt parameter. Use it to handle "WRT rip" separately from other operators. Recurse if there's a WRT below the WRT rip; this is to handle cases like ELF-AMD64's elfso64.asm. (yasm_x86__expr_checkea): Split off top-level WRT's and feed through separately to x86_expr_checkea_getregusage(). * x86bc.c (x86_bc_insn_tobytes): Ensure the SUB operation for PC-relative displacements goes BELOW any WRT expression. (x86_bc_jmp_tobytes): Likewise. * elfso.asm, elfso.hex, elfso.errwarn: New 32-bit ELF shared object tests. * modules/objfmts/elf/tests/Makefile.inc: Include in distribution. * elfso64.asm, elfso64.hex, elfso64.errwarn: New 64-bit ELF shared object tests. This is not a good example, as the assembled code doesn't work, but it at least tests the special symbols. * modules/objfmts/elf/tests/amd64/Makefile.inc: Include in distribution. svn path=/trunk/yasm/; revision=1168		2004-10-31 01:07:52 +00:00
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arch	Fix #44 by adding support for WRT special symbols (e.g. [sym WRT ..plt] and	2004-10-31 01:07:52 +00:00
dbgfmts	Fix #44 by adding support for WRT special symbols (e.g. [sym WRT ..plt] and	2004-10-31 01:07:52 +00:00
listfmts	Fix #44 by adding support for WRT special symbols (e.g. [sym WRT ..plt] and	2004-10-31 01:07:52 +00:00
objfmts	Fix #44 by adding support for WRT special symbols (e.g. [sym WRT ..plt] and	2004-10-31 01:07:52 +00:00
optimizers	* On most files: re-enable $IdPath$ as $Id$, and enable Id keyword expansion.	2004-09-04 01:24:57 +00:00
parsers	Fix #44 by adding support for WRT special symbols (e.g. [sym WRT ..plt] and	2004-10-31 01:07:52 +00:00
preprocs	* On most files: re-enable $IdPath$ as $Id$, and enable Id keyword expansion.	2004-09-04 01:24:57 +00:00
Makefile.inc	First part of list file support. This should accurately output all file	2004-10-02 06:18:30 +00:00