summaryrefslogtreecommitdiffhomepage
diff options
context:
space:
mode:
Diffstat
-rw-r--r--include/mdso/mdso.h1
-rw-r--r--include/mdso/mdso_specs.h31
-rw-r--r--project/common.mk1
-rw-r--r--src/object/mdso_objgen_dsometa.c233
4 files changed, 266 insertions, 0 deletions
diff --git a/include/mdso/mdso.h b/include/mdso/mdso.h
index 7bbe894..59a38bc 100644
--- a/include/mdso/mdso.h
+++ b/include/mdso/mdso.h
@@ -147,6 +147,7 @@ mdso_api uint64_t mdso_crc64_mbstr (const unsigned char * str, size_t * symlen);
mdso_api int mdso_asmgen_dsometa (const struct mdso_driver_ctx *, FILE * fout);
mdso_api int mdso_asmgen_symentry (const struct mdso_driver_ctx *, const char * sym, FILE * fout);
mdso_api int mdso_asmgen_symfn (const struct mdso_driver_ctx *, const char * sym, FILE * fout);
+mdso_api int mdso_objgen_dsometa (const struct mdso_driver_ctx *, FILE * fout, struct mdso_object *);
mdso_api int mdso_objgen_symentry (const struct mdso_driver_ctx *, const char * sym, FILE * fout, struct mdso_object *);
mdso_api int mdso_objgen_symfn (const struct mdso_driver_ctx *, const char * sym, FILE * fout, struct mdso_object *);
diff --git a/include/mdso/mdso_specs.h b/include/mdso/mdso_specs.h
index c4dd72b..642005f 100644
--- a/include/mdso/mdso_specs.h
+++ b/include/mdso/mdso_specs.h
@@ -45,4 +45,35 @@ struct mdso_meta_record {
void * fnr2;
};
+
+struct mdso_meta_record_m32 {
+ uint32_t base;
+ uint32_t name;
+ uint32_t flags;
+ uint32_t priority;
+ uint32_t nsyms;
+ uint32_t padding;
+ uint32_t hashtbl;
+ uint32_t symtbl;
+ uint32_t fncarg;
+ uint32_t fncargarr;
+ uint32_t fnr1;
+ uint32_t fnr2;
+};
+
+struct mdso_meta_record_m64 {
+ uint64_t base;
+ uint64_t name;
+ uint32_t flags;
+ uint32_t priority;
+ uint32_t nsyms;
+ uint32_t padding;
+ uint64_t hashtbl;
+ uint64_t symtbl;
+ uint64_t fncarg;
+ uint64_t fncargarr;
+ uint64_t fnr1;
+ uint64_t fnr2;
+};
+
#endif
diff --git a/project/common.mk b/project/common.mk
index 89af04f..fc3d5c1 100644
--- a/project/common.mk
+++ b/project/common.mk
@@ -10,6 +10,7 @@ API_SRCS = \
src/logic/mdso_asmgen_symentry.c \
src/logic/mdso_asmgen_symfn.c \
src/logic/mdso_map_input.c \
+ src/object/mdso_objgen_dsometa.c \
src/object/mdso_objgen_symentry.c \
src/object/mdso_objgen_symfn.c \
src/output/mdso_output_error.c \
diff --git a/src/object/mdso_objgen_dsometa.c b/src/object/mdso_objgen_dsometa.c
new file mode 100644
index 0000000..2572f12
--- /dev/null
+++ b/src/object/mdso_objgen_dsometa.c
@@ -0,0 +1,233 @@
+/****************************************************************/
+/* mdso: midipix dso scavenger */
+/* Copyright (C) 2015--2017 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.MDSO. */
+/****************************************************************/
+
+#include <stdio.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <mdso/mdso.h>
+#include <mdso/mdso_specs.h>
+#include "mdso_object_impl.h"
+#include "mdso_errinfo_impl.h"
+#include "perk_consts.h"
+#include "perk_structs.h"
+
+struct mdso_unified_record {
+ unsigned char data[80];
+};
+
+struct mdso_dsometa_object {
+ struct pe_raw_coff_object_hdr hdr;
+ struct pe_raw_sec_hdr sec[2];
+ struct mdso_unified_record rec[1];
+ struct pe_raw_coff_reloc rel[1];
+ struct pe_raw_coff_symbol sym[8];
+ struct pe_raw_coff_strtbl cst;
+};
+
+int mdso_objgen_dsometa(
+ const struct mdso_driver_ctx * dctx,
+ FILE * fout,
+ struct mdso_object * vobj)
+{
+ struct mdso_dsometa_object * dsometa;
+ struct pe_raw_coff_symbol * symrec;
+ unsigned char * mark;
+ struct pe_aux_rec_section * aux;
+ size_t buflen;
+ uint32_t liblen;
+ uint32_t cstlen;
+ uint32_t objlen;
+ uint32_t aattr;
+ uint32_t sattr;
+ uint32_t rattr;
+ uint16_t oattr;
+ uint16_t machine;
+ uint16_t reltype;
+ uint32_t relrva;
+ uint32_t reclen;
+ uint32_t recoff;
+ uint32_t reloff;
+ uint32_t symoff;
+ uint32_t cstoff;
+ uint32_t datoff;
+ uint32_t stroff;
+
+ if ((buflen = strlen(dctx->cctx->libname)) > 1024*1024)
+ return MDSO_CUSTOM_ERROR(dctx,MDSO_ERR_INVALID_DATA);
+
+ liblen = (uint32_t)buflen;
+ cstlen = (3 * liblen) + 48;
+ objlen = sizeof(*dsometa) + cstlen;
+
+ if (vobj && vobj->addr && (vobj->size < objlen))
+ return MDSO_BUFFER_ERROR(dctx);
+
+ if (vobj && !vobj->addr) {
+ vobj->size = objlen;
+ return 0;
+ }
+
+ if (vobj)
+ dsometa = (struct mdso_dsometa_object *)vobj->addr;
+
+ else if (!(dsometa = calloc(1,objlen)))
+ return MDSO_SYSTEM_ERROR(dctx);
+
+ if (dctx->cctx->drvflags & MDSO_DRIVER_QUAD_PTR) {
+ reclen = sizeof(struct mdso_meta_record_m64);
+ aattr = PE_IMAGE_SCN_ALIGN_16BYTES;
+ machine = PE_IMAGE_FILE_MACHINE_AMD64;
+ reltype = PE_IMAGE_REL_AMD64_ADDR64;
+ relrva = 8;
+ } else {
+ reclen = sizeof(struct mdso_meta_record_m32);
+ aattr = PE_IMAGE_SCN_ALIGN_8BYTES;
+ machine = PE_IMAGE_FILE_MACHINE_I386;
+ reltype = PE_IMAGE_REL_I386_DIR32;
+ relrva = 4;
+ }
+
+ sattr = PE_IMAGE_SCN_ALIGN_1BYTES;
+ sattr |= PE_IMAGE_SCN_MEM_READ;
+ sattr |= PE_IMAGE_SCN_CNT_INITIALIZED_DATA;
+
+ rattr = aattr;
+ rattr |= PE_IMAGE_SCN_MEM_READ;
+ rattr |= PE_IMAGE_SCN_CNT_INITIALIZED_DATA;
+
+ oattr = PE_IMAGE_FILE_LINE_NUMS_STRIPPED;
+ recoff = offsetof(struct mdso_dsometa_object,rec);
+ reloff = offsetof(struct mdso_dsometa_object,rel);
+ symoff = offsetof(struct mdso_dsometa_object,sym);
+ cstoff = offsetof(struct pe_raw_coff_strtbl,cst_data);
+ datoff = 0;
+
+ stroff = objlen - liblen - 16;
+ stroff += 0xf;
+ stroff |= 0xf;
+ stroff ^= 0xf;
+
+ /* coff object header */
+ mdso_obj_write_short(dsometa->hdr.cfh_machine,machine);
+ mdso_obj_write_short(dsometa->hdr.cfh_num_of_sections,2);
+ mdso_obj_write_long(dsometa->hdr.cfh_ptr_to_sym_tbl,symoff);
+ mdso_obj_write_long(dsometa->hdr.cfh_num_of_syms,8);
+ mdso_obj_write_short(dsometa->hdr.cfh_characteristics,oattr);
+
+ /* .dsostrs section header */
+ memcpy(dsometa->sec[0].sh_name,".dsostrs",8);
+ mdso_obj_write_long(dsometa->sec[0].sh_size_of_raw_data,liblen+1);
+ mdso_obj_write_long(dsometa->sec[0].sh_ptr_to_raw_data,stroff);
+ mdso_obj_write_long(dsometa->sec[0].sh_characteristics,sattr);
+
+ /* .dsometa section header */
+ memcpy(dsometa->sec[1].sh_name,".dsometa",8);
+ mdso_obj_write_long(dsometa->sec[1].sh_size_of_raw_data,reclen);
+ mdso_obj_write_long(dsometa->sec[1].sh_ptr_to_raw_data,recoff);
+ mdso_obj_write_long(dsometa->sec[1].sh_ptr_to_relocs,reloff);
+ mdso_obj_write_short(dsometa->sec[1].sh_num_of_relocs,1);
+ mdso_obj_write_long(dsometa->sec[1].sh_characteristics,rattr);
+
+ /* .dsometa section data: flags */
+ mark = dsometa->rec[0].data;
+ mdso_obj_write_long(&mark[2*relrva],dctx->cctx->dsoflags);
+
+ /* .dsometa relocation record: .name */
+ mdso_obj_write_long(dsometa->rel[0].rel_sym,6);
+ mdso_obj_write_long(dsometa->rel[0].rel_rva,relrva);
+ mdso_obj_write_short(dsometa->rel[0].rel_type,reltype);
+
+ /* coff string table */
+ mdso_obj_write_long(dsometa->cst.cst_size,cstlen);
+
+ /* coff symbol table */
+ symrec = dsometa->sym;
+ mark = dsometa->cst.cst_data;
+
+ /* coff symbol: .file */
+ symrec[0].cs_storage_class[0] = PE_IMAGE_SYM_CLASS_FILE;
+ symrec[0].cs_num_of_aux_symbols[0] = 1;
+
+ mdso_obj_write_short(&symrec[0].cs_section_number[0],PE_IMAGE_SYM_DEBUG);
+ mdso_obj_write_long(&symrec[1].cs_name[4],cstoff+datoff);
+
+ memcpy(symrec[0].cs_name,".file",5);
+ memcpy(&mark[0],".dsometa_",9);
+ memcpy(&mark[9],dctx->cctx->libname,liblen);
+ memcpy(&mark[9+liblen],".s",2);
+
+ datoff += 12 + liblen;
+ mark += 12 + liblen;
+ symrec += 2;
+
+ /* coff symbol: .dsostrs */
+ symrec[0].cs_storage_class[0] = PE_IMAGE_SYM_CLASS_STATIC;
+ symrec[0].cs_num_of_aux_symbols[0] = 1;
+
+ mdso_obj_write_short(symrec[0].cs_section_number,1);
+ memcpy(symrec[0].cs_name,".dsostrs",8);
+
+ aux = (struct pe_aux_rec_section *)&symrec[1];
+ mdso_obj_write_long(aux->aux_size,liblen+1);
+ mdso_obj_write_short(aux->aux_num_of_relocs,0);
+
+ datoff += 0;
+ mark += 0;
+ symrec += 2;
+
+ /* coff symbol: .dsometa */
+ symrec[0].cs_storage_class[0] = PE_IMAGE_SYM_CLASS_STATIC;
+ symrec[0].cs_num_of_aux_symbols[0] = 1;
+
+ mdso_obj_write_short(symrec[0].cs_section_number,2);
+ memcpy(symrec[0].cs_name,".dsometa",8);
+
+ aux = (struct pe_aux_rec_section *)&symrec[1];
+ mdso_obj_write_long(aux->aux_size,reclen);
+ mdso_obj_write_short(aux->aux_num_of_relocs,1);
+
+ datoff += 0;
+ mark += 0;
+ symrec += 2;
+
+ /* coff symbol: .libname */
+ symrec[0].cs_storage_class[0] = PE_IMAGE_SYM_CLASS_STATIC;
+ symrec[0].cs_num_of_aux_symbols[0] = 0;
+
+ mdso_obj_write_short(symrec[0].cs_section_number,1);
+ memcpy(symrec[0].cs_name,".libname",8);
+
+ datoff += 0;
+ mark += 0;
+ symrec += 1;
+
+ /* coff symbol: .dsometa_libname */
+ symrec[0].cs_storage_class[0] = PE_IMAGE_SYM_CLASS_EXTERNAL;
+ symrec[0].cs_num_of_aux_symbols[0] = 0;
+
+ mdso_obj_write_short(symrec[0].cs_section_number,2);
+ mdso_obj_write_long(&symrec[0].cs_name[4],cstoff+datoff);
+
+ memcpy(&mark[0],".dsometa_",9);
+ memcpy(&mark[9],dctx->cctx->libname,liblen);
+
+ /* .libname */
+ mark = dsometa->hdr.cfh_machine;
+ memcpy(&mark[stroff],dctx->cctx->libname,liblen);
+
+ /* tada */
+ if (fout)
+ if (fwrite(dsometa,objlen,1,fout) == 0)
+ return MDSO_FILE_ERROR(dctx);
+
+ if (!vobj)
+ free(dsometa);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-10 17:23:49 +0000