diff options
Diffstat (limited to 'rtemstoolkit/elftoolchain/libdwarf/libdwarf_macinfo.c')
| -rw-r--r-- | rtemstoolkit/elftoolchain/libdwarf/libdwarf_macinfo.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/rtemstoolkit/elftoolchain/libdwarf/libdwarf_macinfo.c b/rtemstoolkit/elftoolchain/libdwarf/libdwarf_macinfo.c new file mode 100644 index 0000000..1c9101c --- /dev/null +++ b/rtemstoolkit/elftoolchain/libdwarf/libdwarf_macinfo.c @@ -0,0 +1,254 @@ +/*- + * Copyright (c) 2009-2011 Kai Wang + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "_libdwarf.h" + +ELFTC_VCSID("$Id: libdwarf_macinfo.c 2974 2013-12-23 06:46:22Z kaiwang27 $"); + +#define _FILEINDEX_STACK_SIZE 16384 + +static int +_dwarf_macinfo_parse(Dwarf_Debug dbg, Dwarf_Section *ds, uint64_t *off, + Dwarf_Macro_Details *dmd, Dwarf_Unsigned *cnt, Dwarf_Error *error) +{ + Dwarf_Unsigned lineno; + Dwarf_Signed fileindex[_FILEINDEX_STACK_SIZE]; + char *p; + int i, type, sp; + + i = 0; + sp = 0; + fileindex[sp] = -1; + while (*off < ds->ds_size) { + + if (dmd != NULL) + dmd[i].dmd_offset = *off; + + type = dbg->read(ds->ds_data, off, 1); + + if (dmd != NULL) { + dmd[i].dmd_type = type; + dmd[i].dmd_fileindex = fileindex[sp]; + } + + switch (type) { + case 0: + break; + case DW_MACINFO_define: + case DW_MACINFO_undef: + case DW_MACINFO_vendor_ext: + lineno = _dwarf_read_uleb128(ds->ds_data, off); + p = (char *) ds->ds_data; + if (dmd != NULL) { + dmd[i].dmd_lineno = lineno; + dmd[i].dmd_macro = p + *off; + + } + while (p[(*off)++] != '\0') + ; + break; + case DW_MACINFO_start_file: + lineno = _dwarf_read_uleb128(ds->ds_data, off); + if (sp >= _FILEINDEX_STACK_SIZE - 1) { + assert(0); + } + fileindex[++sp] = _dwarf_read_uleb128(ds->ds_data, off); + if (dmd != NULL) { + dmd[i].dmd_lineno = lineno; + dmd[i].dmd_fileindex = fileindex[sp]; + } + break; + case DW_MACINFO_end_file: + if (sp > 0) { + sp--; + break; + } + /* FALLTHROUGH */ + default: + DWARF_SET_ERROR(dbg, error, + DW_DLE_DEBUG_MACRO_INCONSISTENT); + return (DW_DLE_DEBUG_MACRO_INCONSISTENT); + } + + i++; + + if (type == 0) + break; + } + + if (cnt != NULL) + *cnt = i; + + return (DW_DLE_NONE); +} + +void +_dwarf_macinfo_cleanup(Dwarf_Debug dbg) +{ + Dwarf_MacroSet ms, tms; + + if (STAILQ_EMPTY(&dbg->dbg_mslist)) + return; + + STAILQ_FOREACH_SAFE(ms, &dbg->dbg_mslist, ms_next, tms) { + STAILQ_REMOVE(&dbg->dbg_mslist, ms, _Dwarf_MacroSet, ms_next); + if (ms->ms_mdlist) + free(ms->ms_mdlist); + free(ms); + } +} + +int +_dwarf_macinfo_init(Dwarf_Debug dbg, Dwarf_Error *error) +{ + Dwarf_MacroSet ms; + Dwarf_Unsigned cnt; + Dwarf_Section *ds; + uint64_t offset, entry_off; + int ret; + + if ((ds = _dwarf_find_section(dbg, ".debug_macinfo")) == NULL) + return (DW_DLE_NONE); + + offset = 0; + while (offset < ds->ds_size) { + + entry_off = offset; + + ret = _dwarf_macinfo_parse(dbg, ds, &offset, NULL, &cnt, error); + if (ret != DW_DLE_NONE) + return (ret); + + if (cnt == 0) + break; + + if ((ms = calloc(1, sizeof(struct _Dwarf_MacroSet))) == NULL) { + DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); + ret = DW_DLE_MEMORY; + goto fail_cleanup; + } + STAILQ_INSERT_TAIL(&dbg->dbg_mslist, ms, ms_next); + + if ((ms->ms_mdlist = calloc(cnt, sizeof(Dwarf_Macro_Details))) + == NULL) { + DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); + ret = DW_DLE_MEMORY; + goto fail_cleanup; + } + + ms->ms_cnt = cnt; + + offset = entry_off; + + ret = _dwarf_macinfo_parse(dbg, ds, &offset, ms->ms_mdlist, + NULL, error); + + if (ret != DW_DLE_NONE) { + DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); + ret = DW_DLE_MEMORY; + goto fail_cleanup; + } + } + + return (DW_DLE_NONE); + +fail_cleanup: + + _dwarf_macinfo_cleanup(dbg); + + return (ret); +} + +int +_dwarf_macinfo_gen(Dwarf_P_Debug dbg, Dwarf_Error *error) +{ + Dwarf_P_Section ds; + Dwarf_Macro_Details *md; + int i, ret; + + if (dbg->dbgp_mdcnt == 0) + return (DW_DLE_NONE); + + /* Create .debug_frame section. */ + RCHECK(_dwarf_section_init(dbg, &ds, ".debug_macinfo", 0, error)); + + /* Write the list of Dwarf_Macro_Details. */ + for (i = 0; (Dwarf_Unsigned) i < dbg->dbgp_mdcnt; i++) { + md = &dbg->dbgp_mdlist[i]; + md->dmd_offset = ds->ds_size; + RCHECK(WRITE_VALUE(md->dmd_type, 1)); + switch (md->dmd_type) { + case DW_MACINFO_define: + case DW_MACINFO_undef: + case DW_MACINFO_vendor_ext: + RCHECK(WRITE_ULEB128(md->dmd_lineno)); + assert(md->dmd_macro != NULL); + RCHECK(WRITE_STRING(md->dmd_macro)); + break; + case DW_MACINFO_start_file: + RCHECK(WRITE_ULEB128(md->dmd_lineno)); + RCHECK(WRITE_ULEB128(md->dmd_fileindex)); + break; + case DW_MACINFO_end_file: + break; + default: + assert(0); + break; + } + } + RCHECK(WRITE_VALUE(0, 1)); + + /* Inform application the creation of .debug_macinfo ELF section. */ + RCHECK(_dwarf_section_callback(dbg, ds, SHT_PROGBITS, 0, 0, 0, error)); + + return (DW_DLE_NONE); + +gen_fail: + _dwarf_section_free(dbg, &ds); + + return (ret); +} + +void +_dwarf_macinfo_pro_cleanup(Dwarf_P_Debug dbg) +{ + Dwarf_Macro_Details *md; + int i; + + assert(dbg != NULL && dbg->dbg_mode == DW_DLC_WRITE); + if (dbg->dbgp_mdlist == NULL) + return; + + assert(dbg->dbgp_mdcnt > 0); + for (i = 0; (Dwarf_Unsigned) i < dbg->dbgp_mdcnt; i++) { + md = &dbg->dbgp_mdlist[i]; + if (md->dmd_macro) + free(md->dmd_macro); + } + free(dbg->dbgp_mdlist); + dbg->dbgp_mdlist = NULL; + dbg->dbgp_mdcnt = 0; +} |