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Blame patches/nasm_host-2.14.02.local.patch

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