diff options
Diffstat (limited to 'src/arbits/slbt_archive_symfile.c')
| -rw-r--r-- | src/arbits/slbt_archive_symfile.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/src/arbits/slbt_archive_symfile.c b/src/arbits/slbt_archive_symfile.c new file mode 100644 index 0000000..49d2ff0 --- /dev/null +++ b/src/arbits/slbt_archive_symfile.c @@ -0,0 +1,138 @@ +/*******************************************************************/ +/* slibtool: a strong libtool implementation, written in C */ +/* Copyright (C) 2016--2024 SysDeer Technologies, LLC */ +/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */ +/*******************************************************************/ + +#include <time.h> +#include <locale.h> +#include <regex.h> +#include <inttypes.h> +#include <slibtool/slibtool.h> +#include <slibtool/slibtool_output.h> +#include "slibtool_driver_impl.h" +#include "slibtool_dprintf_impl.h" +#include "slibtool_errinfo_impl.h" +#include "slibtool_pecoff_impl.h" +#include "slibtool_ar_impl.h" + +/********************************************************/ +/* Generate a symbol list that could be used by a build */ +/* system for code generation or any other purpose. */ +/* */ +/* The output matches the -Wposix variant of symbol */ +/* printing, but the interface should be kept separate */ +/* since the _au_output_ functions implement several */ +/* output format, whereas here only a single, plain */ +/* output is expected. */ +/********************************************************/ + +static int slbt_ar_output_symfile_impl( + const struct slbt_driver_ctx * dctx, + struct slbt_archive_meta_impl * mctx, + int fdout) +{ + bool fsort; + bool fcoff; + const char * dot; + const char * mark; + const char * regex; + const char ** symv; + const char ** symstrv; + regex_t regctx; + regmatch_t pmatch[2] = {{0,0},{0,0}}; + char strbuf[4096]; + + fsort = !(dctx->cctx->fmtflags & SLBT_OUTPUT_ARCHIVE_NOSORT); + + fcoff = slbt_host_objfmt_is_coff(dctx); + fcoff |= (mctx->ofmtattr & AR_OBJECT_ATTR_COFF); + + if (fsort && !mctx->mapstrv) + if (slbt_update_mapstrv(dctx,mctx) < 0) + return SLBT_NESTED_ERROR(dctx); + + if ((regex = dctx->cctx->regex)) + if (regcomp(®ctx,regex,REG_EXTENDED|REG_NEWLINE)) + return SLBT_CUSTOM_ERROR( + dctx, + SLBT_ERR_FLOW_ERROR); + + symstrv = fsort ? mctx->mapstrv : mctx->symstrv; + + for (symv=symstrv; *symv; symv++) { + if (!fcoff || slbt_is_strong_coff_symbol(*symv)) { + if (!regex || !regexec(®ctx,*symv,1,pmatch,0)) { + if (slbt_dprintf(fdout,"%s\n",*symv) < 0) + return SLBT_SYSTEM_ERROR(dctx,0); + } + + /* coff weak symbols: expsym = .weak.alias.strong */ + } else if (fcoff && !strncmp(*symv,".weak.",6)) { + mark = &(*symv)[6]; + dot = strchr(mark,'.'); + + strncpy(strbuf,mark,dot-mark); + strbuf[dot-mark] = '\0'; + + if (!regex || !regexec(®ctx,strbuf,1,pmatch,0)) + if (slbt_dprintf(fdout," %s = %s\n",strbuf,++dot) < 0) + return SLBT_SYSTEM_ERROR(dctx,0); + } + } + + if (regex) + regfree(®ctx); + + return 0; +} + + +static int slbt_ar_create_symfile_impl( + const struct slbt_archive_meta * meta, + const char * path, + mode_t mode) +{ + int ret; + struct slbt_archive_meta_impl * mctx; + const struct slbt_driver_ctx * dctx; + struct slbt_fd_ctx fdctx; + int fdout; + + mctx = slbt_archive_meta_ictx(meta); + dctx = (slbt_archive_meta_ictx(meta))->dctx; + + if (slbt_lib_get_driver_fdctx(dctx,&fdctx) < 0) + return SLBT_NESTED_ERROR(dctx); + + if (!meta->a_memberv) + return 0; + + if (path) { + if ((fdout = openat( + fdctx.fdcwd,path, + O_WRONLY|O_CREAT|O_TRUNC, + mode)) < 0) + return SLBT_SYSTEM_ERROR(dctx,path); + } else { + fdout = fdctx.fdout; + } + + ret = slbt_ar_output_symfile_impl( + dctx,mctx,fdout); + + if (path) { + close(fdout); + } + + return ret; +} + + +int slbt_ar_create_symfile( + const struct slbt_archive_meta * meta, + const char * path, + mode_t mode) +{ + return slbt_ar_create_symfile_impl(meta,path,mode); +} |