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--- nasm-2.14.02/output/outcoff.c.orig 2018-12-26 13:44:06.000000000 +0000
+++ nasm-2.14.02/output/outcoff.c 2019-01-20 13:18:06.240000000 +0000
@@ -701,6 +701,7 @@
sect->len += len;
}
+#ifndef COFF_MIDIPIX
typedef struct tagString {
struct tagString *next;
int len;
@@ -765,6 +766,98 @@
*rvp = NULL;
}
+#else
+typedef struct tagGlobalSymbol {
+ struct tagGlobalSymbol *next;
+ struct coff_Symbol *sym;
+} GLOBALSYMBOL;
+typedef struct tagGlobalSymbolList {
+ GLOBALSYMBOL *head, *tail;
+} GLOBALSYMBOLLIST;
+
+#define GOT_SECTION_FLAGS \
+ (IMAGE_SCN_CNT_INITIALIZED_DATA | \
+ IMAGE_SCN_ALIGN_4BYTES | \
+ IMAGE_SCN_LNK_COMDAT | \
+ IMAGE_SCN_MEM_READ)
+#define GOT_SECTION_PREFIX ".got$"
+#define GOT_SECTION_PREFIX_LEN (sizeof(GOT_SECTION_PREFIX) - 1)
+#define GOT_SYMBOL_PREFIX "__imp_"
+#define GOT_SYMBOL_PREFIX_LEN (sizeof(GOT_SYMBOL_PREFIX) - 1)
+
+static void BuildGlobalOffsetTable(void)
+{
+ uint64_t global_sym_addr;
+ GLOBALSYMBOL *global_sym, *global_sym_next;
+ char *global_sym_name;
+ GLOBALSYMBOLLIST global_symbols = {NULL, NULL};
+ char *got_sec_name, *got_sym_name;
+ size_t got_sec_name_len, got_sym_name_len;
+ struct coff_Symbol *sym;
+ unsigned long sym_num;
+
+ saa_rewind(coff_syms);
+ for (sym_num = 0; sym_num < coff_nsyms; sym_num++) {
+ sym = saa_rstruct(coff_syms);
+ if (sym->is_global && sym->section > 0) {
+ global_sym = nasm_malloc(sizeof(*global_sym));
+ global_sym->next = NULL;
+ global_sym->sym = sym;
+ if (!global_symbols.head)
+ global_symbols.head = global_sym;
+ if (global_symbols.tail)
+ global_symbols.tail->next = global_sym;
+ global_symbols.tail = global_sym;
+ }
+ }
+
+ for (global_sym = global_symbols.head, global_sym_next = NULL; global_sym; global_sym = global_sym_next) {
+ global_sym_name = nasm_zalloc(global_sym->sym->namlen + 1);
+ if (global_sym->sym->namlen > 8)
+ saa_fread(coff_strs, global_sym->sym->strpos - 4, global_sym_name, global_sym->sym->namlen);
+ else
+ strcpy(global_sym_name, global_sym->sym->name);
+
+ got_sec_name_len = GOT_SECTION_PREFIX_LEN + global_sym->sym->namlen;
+ got_sym_name_len = GOT_SYMBOL_PREFIX_LEN + global_sym->sym->namlen;
+ got_sec_name = nasm_zalloc(got_sec_name_len + 1);
+ got_sym_name = nasm_zalloc(got_sym_name_len + 1);
+ snprintf(got_sec_name, got_sec_name_len + 1, "%s%s", GOT_SECTION_PREFIX, global_sym_name);
+ snprintf(got_sym_name, got_sym_name_len + 1, "%s%s", GOT_SYMBOL_PREFIX, global_sym_name);
+
+ sym_num = coff_nsyms - 1;
+ sym = saa_wstruct(coff_syms);
+ sym->is_global = 1;
+ sym->namlen = got_sym_name_len;
+ sym->section = coff_make_section(got_sec_name, GOT_SECTION_FLAGS) + 1;
+ sym->type = 0; sym->value = 0;
+ coff_nsyms++;
+
+ if (sym->namlen > 8) {
+ sym->strpos = strslen + 4;
+ memset(sym->name, '\0', sizeof(sym->name));
+ saa_wbytes(coff_strs, got_sym_name, sym->namlen + 1);
+ strslen += sym->namlen + 1;
+ } else {
+ sym->strpos = -1;
+ strncpy(sym->name, got_sym_name, sizeof(sym->name));
+ }
+
+ if (win64) {
+ coff_add_reloc(coff_sects[sym->section - 1], coff_sects[global_sym->sym->section - 1]->index, IMAGE_REL_AMD64_ADDR64);
+ global_sym_addr = (uint64_t)global_sym->sym->value;
+ coff_sect_write(coff_sects[sym->section - 1], (const uint8_t *)&global_sym_addr, sizeof(global_sym_addr));
+ } else {
+ coff_add_reloc(coff_sects[sym->section - 1], coff_sects[global_sym->sym->section - 1]->index, IMAGE_REL_I386_DIR32);
+ coff_sect_write(coff_sects[sym->section - 1], (const uint8_t *)&global_sym->sym->value, sizeof(global_sym->sym->value));
+ }
+
+ global_sym_next = global_sym->next;
+ nasm_free(global_sym); nasm_free(global_sym_name);
+ nasm_free(got_sec_name); nasm_free(got_sym_name);
+ }
+}
+#endif
static enum directive_result
coff_directives(enum directive directive, char *value, int pass)
@@ -793,7 +886,9 @@
nasm_error(ERR_NONFATAL, "unrecognized export qualifier `%s'", q);
return DIRR_ERROR;
}
+#ifndef COFF_MIDIPIX
AddExport(name);
+#endif
return DIRR_OK;
}
case D_SAFESEH:
@@ -888,8 +983,12 @@
int32_t pos, sympos, vsize;
int i;
+#ifndef COFF_MIDIPIX
/* fill in the .drectve section with -export's */
BuildExportTable(&Exports);
+#else
+ BuildGlobalOffsetTable();
+#endif
if (win32) {
/* add default value for @feat.00, this allows to 'link /safeseh' */
@@ -1086,7 +1185,10 @@
memset(filename, 0, 18); /* useful zeroed buffer */
for (i = 0; i < (uint32_t) coff_nsects; i++) {
- coff_symbol(coff_sects[i]->name, 0L, 0L, i + 1, 0, 3, 1);
+ if (coff_sects[i]->namepos == -1)
+ coff_symbol(coff_sects[i]->name, 0L, 0L, i + 1, 0, 3, 1);
+ else
+ coff_symbol(NULL, coff_sects[i]->namepos, 0L, i + 1, 0, 3, 1);
fwriteint32_t(coff_sects[i]->len, ofile);
fwriteint16_t(coff_sects[i]->nrelocs,ofile);
nasm_write(filename, 12, ofile);
|
