Checkin tiny_libmaker (ar replacement) by Timovj Lahde

1 files changed, 319 insertions, 0 deletions

diff --git a/win32/tools/tiny_libmaker.c b/win32/tools/tiny_libmaker.c
new file mode 100644
index 0000000..efda78a
--- /dev/null
+++ b/win32/tools/tiny_libmaker.c
@@ -0,0 +1,319 @@
+/*
+ * This program is for making libtcc1.a without ar
+ * tiny_libmaker - tiny elf lib maker
+ * usage: tiny_libmaker [lib] files...
+ * Copyright (c) 2007 Timppa
+ *
+ * This program is free software but WITHOUT ANY WARRANTY
+ */ 
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* #include "ar-elf.h" */
+/*  "ar-elf.h" */
+/* ELF_v1.2.pdf */
+typedef unsigned short int Elf32_Half;
+typedef int Elf32_Sword;
+typedef unsigned int Elf32_Word;
+typedef unsigned int Elf32_Addr;
+typedef unsigned int Elf32_Off;
+typedef unsigned short int Elf32_Section;
+
+#define EI_NIDENT 16
+typedef struct {
+    unsigned char e_ident[EI_NIDENT];
+    Elf32_Half e_type;
+    Elf32_Half e_machine;
+    Elf32_Word e_version;
+    Elf32_Addr e_entry;
+    Elf32_Off e_phoff;
+    Elf32_Off e_shoff;
+    Elf32_Word e_flags;
+    Elf32_Half e_ehsize;
+    Elf32_Half e_phentsize;
+    Elf32_Half e_phnum;
+    Elf32_Half e_shentsize;
+    Elf32_Half e_shnum;
+    Elf32_Half e_shstrndx;
+} Elf32_Ehdr;
+
+typedef struct {
+    Elf32_Word sh_name;
+    Elf32_Word sh_type;
+    Elf32_Word sh_flags;
+    Elf32_Addr sh_addr;
+    Elf32_Off sh_offset;
+    Elf32_Word sh_size;
+    Elf32_Word sh_link;
+    Elf32_Word sh_info;
+    Elf32_Word sh_addralign;
+    Elf32_Word sh_entsize;
+} Elf32_Shdr;
+
+#define SHT_NULL 0
+#define SHT_PROGBITS 1
+#define SHT_SYMTAB 2
+#define SHT_STRTAB 3
+#define SHT_RELA 4
+#define SHT_HASH 5
+#define SHT_DYNAMIC 6
+#define SHT_NOTE 7
+#define SHT_NOBITS 8
+#define SHT_REL 9
+#define SHT_SHLIB 10
+#define SHT_DYNSYM 11
+
+typedef struct {
+    Elf32_Word st_name;
+    Elf32_Addr st_value;
+    Elf32_Word st_size;
+    unsigned char st_info;
+    unsigned char st_other;
+    Elf32_Half st_shndx;
+} Elf32_Sym;
+
+#define ELF32_ST_BIND(i) ((i)>>4)
+#define ELF32_ST_TYPE(i) ((i)&0xf)
+#define ELF32_ST_INFO(b,t) (((b)<<4)+((t)&0xf))
+
+#define STT_NOTYPE 0
+#define STT_OBJECT 1
+#define STT_FUNC 2
+#define STT_SECTION 3
+#define STT_FILE 4
+#define STT_LOPROC 13
+#define STT_HIPROC 15
+
+#define STB_LOCAL 0
+#define STB_GLOBAL 1
+#define STB_WEAK 2
+#define STB_LOPROC 13
+#define STB_HIPROC 15
+
+typedef struct {
+    Elf32_Word p_type;
+    Elf32_Off p_offset;
+    Elf32_Addr p_vaddr;
+    Elf32_Addr p_paddr;
+    Elf32_Word p_filesz;
+    Elf32_Word p_memsz;
+    Elf32_Word p_flags;
+    Elf32_Word p_align;
+} Elf32_Phdr;
+/* "ar-elf.h" ends */
+
+#define ARMAG  "!<arch>\n"
+#define ARFMAG "`\n"
+
+typedef struct ArHdr {
+    char ar_name[16];
+    char ar_date[12];
+    char ar_uid[6];
+    char ar_gid[6];
+    char ar_mode[8];
+    char ar_size[10];
+    char ar_fmag[2];
+} ArHdr;
+
+
+unsigned long le2belong(unsigned long ul) {
+    return ((ul & 0xFF0000)>>8)+((ul & 0xFF000000)>>24) +
+        ((ul & 0xFF)<<24)+((ul & 0xFF00)<<8);
+}
+
+ArHdr arhdr = {
+    "/               ",
+    "            ",
+    "0     ",
+    "0     ",
+    "0       ",
+    "          ",
+    ARFMAG
+    };
+
+ArHdr arhdro = {
+    "                ",
+    "            ",
+    "0     ",
+    "0     ",
+    "0       ",
+    "          ",
+    ARFMAG
+    };
+
+int main(int argc, char **argv)
+{
+    FILE *fi, *fh, *fo;
+    Elf32_Ehdr *ehdr;
+    Elf32_Shdr *shdr;
+    Elf32_Sym *sym;
+    int i, fsize, iarg;
+    char *buf, *shstr, *symtab = NULL, *strtab = NULL;
+    int symtabsize = 0, strtabsize = 0;
+    char *anames = NULL;
+    int *afpos = NULL;
+    int istrlen, strpos = 0, fpos = 0, funccnt = 0, funcmax, hofs;
+    char afile[260], tfile[260], stmp[20];
+
+
+    strcpy(afile, "ar_test.a");
+    iarg = 1;
+
+    if (argc < 2)
+    {
+        printf("usage: tiny_libmaker [lib] file...\n");
+        return 1;
+    }
+    for (i=1; i<argc; i++) {
+        istrlen = strlen(argv[i]);
+        if (argv[i][istrlen-2] == '.') {
+            if(argv[i][istrlen-1] == 'a')
+                strcpy(afile, argv[i]);
+            else if(argv[i][istrlen-1] == 'o') {
+                iarg = i;
+                break;
+            }
+        }
+    }
+
+    //tfile[0] = '.'; tfile[1] = '/';
+    //if (tmpnam(&tfile[2])) {
+    strcpy(tfile, "./XXXXXX");
+    if (mktemp(tfile))
+    {
+        if ((fo = fopen(tfile, "wb+")) == NULL)
+        {
+            fprintf(stderr, "Can't open  file %s \n", tfile);
+            return 2;
+        }
+    }
+
+/*
+    if ((fo = tmpfile()) == NULL)
+    {
+        fprintf(stderr, "Can't open temporary file \n");
+        return 2;
+    }
+*/
+    if ((fh = fopen(afile, "wb")) == NULL)
+    {
+        fprintf(stderr, "Can't open file %s \n", afile);
+        remove(tfile);
+        return 2;
+    }
+
+    funcmax = 1000;
+    afpos = realloc(NULL, funcmax); // 250 func
+    memcpy(&arhdro.ar_mode, "100666", 6);
+
+    //iarg = 1;
+    while (iarg < argc)
+    {
+        if (!strcmp(argv[iarg], "rcs")) {
+            iarg++;
+            continue;
+        }
+        if ((fi = fopen(argv[iarg], "rb")) == NULL)
+        {
+            fprintf(stderr, "Can't open  file %s \n", argv[iarg]);
+            remove(tfile);
+            return 2;
+        }
+        fseek(fi, 0, SEEK_END);
+        fsize = ftell(fi);
+        fseek(fi, 0, SEEK_SET);
+        buf = malloc(fsize + 1);
+        fread(buf, fsize, 1, fi);
+        fclose(fi);
+
+        printf("%s:\n", argv[iarg]);
+        // elf header
+        ehdr = (Elf32_Ehdr *)buf;
+        shdr = (Elf32_Shdr *) (buf + ehdr->e_shoff + ehdr->e_shstrndx * ehdr->e_shentsize);
+        shstr = (char *)(buf + shdr->sh_offset);
+        for (i = 0; i < ehdr->e_shnum; i++)
+        {
+            shdr = (Elf32_Shdr *) (buf + ehdr->e_shoff + i * ehdr->e_shentsize);
+            if (!shdr->sh_offset) continue;
+            if (shdr->sh_type == SHT_SYMTAB)
+            {
+                symtab = (char *)(buf + shdr->sh_offset);
+                symtabsize = shdr->sh_size;
+            }
+            if (shdr->sh_type == SHT_STRTAB)
+            {
+                if (!strcmp(shstr + shdr->sh_name, ".strtab"))
+                {
+                    strtab = (char *)(buf + shdr->sh_offset);
+                    strtabsize = shdr->sh_size;
+                }
+            }
+        }
+
+        if (symtab && symtabsize)
+        {
+            int nsym = symtabsize / sizeof(Elf32_Sym);
+            //printf("symtab: info size shndx name\n");
+            for (i = 1; i < nsym; i++)
+            {
+                sym = (Elf32_Sym *) (symtab + i * sizeof(Elf32_Sym));
+                if (sym->st_shndx && (sym->st_info == 0x11 || sym->st_info == 0x12)) {
+                    //printf("symtab: %2Xh %4Xh %2Xh %s\n", sym->st_info, sym->st_size, sym->st_shndx, strtab + sym->st_name);
+                    istrlen = strlen(strtab + sym->st_name)+1;
+                    anames = realloc(anames, strpos+istrlen);
+                    strcpy(anames + strpos, strtab + sym->st_name);
+                    strpos += istrlen;
+                    if (funccnt >= funcmax) {
+                        afpos = realloc(NULL, funcmax+1000);    // 250 func more
+                        funcmax += 1000;
+                    }
+                    afpos[++funccnt] = fpos;
+                }
+            }
+        }
+        memset(&arhdro.ar_name, ' ', sizeof(arhdr.ar_name));
+        strcpy(arhdro.ar_name, argv[iarg]);
+        arhdro.ar_name[strlen(argv[iarg])] = '/';
+        sprintf(stmp, "%-10d", fsize);
+        memcpy(&arhdro.ar_size, stmp, 10);
+        fwrite(&arhdro, sizeof(arhdro), 1, fo);
+        fwrite(buf, fsize, 1, fo);
+        free(buf);
+        iarg++;
+        fpos += (fsize + sizeof(arhdro));
+    }
+    hofs = 8 + sizeof(arhdr) + strpos + (funccnt+1) * sizeof(int);
+    if ((hofs & 1)) {   // align
+        hofs++;
+        fpos = 1;
+    } else fpos = 0;
+    // write header
+    fwrite("!<arch>\n", 8, 1, fh);
+    sprintf(stmp, "%-10d", strpos + (funccnt+1) * sizeof(int));
+    memcpy(&arhdr.ar_size, stmp, 10);
+    fwrite(&arhdr, sizeof(arhdr), 1, fh);
+    afpos[0] = le2belong(funccnt);
+    for (i=1; i<=funccnt; i++) {
+        afpos[i] = le2belong(afpos[i] + hofs);
+    }
+    fwrite(afpos, (funccnt+1) * sizeof(int), 1, fh);
+    fwrite(anames, strpos, 1, fh);
+    if (fpos) fwrite("", 1, 1, fh);
+    // write objects
+    fseek(fo, 0, SEEK_END);
+    fsize = ftell(fo);
+    fseek(fo, 0, SEEK_SET);
+    buf = malloc(fsize + 1);
+    fread(buf, fsize, 1, fo);
+    fclose(fo);
+    fwrite(buf, fsize, 1, fh);
+    fclose(fh);
+    free(buf);
+    if (anames)
+        free(anames);
+    if (afpos)
+        free(afpos);
+    remove(tfile);
+    return 0;
+}