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[/] [plasma/] [trunk/] [tools/] [convert.c] - Blame information for rev 169

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//convert.c by Steve Rhoads 4/26/01
//Now uses the ELF format (get gccmips_elf.zip)
//set $gp and zero .sbss and .bss
//Reads test.exe and creates code.txt
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
#define BUF_SIZE (1024*1024*4) 
/*Assumes running on PC little endian*/
#ifndef LITTLE_ENDIAN
#define ntohl(A) (((A)>>24)|(((A)&0x00ff0000)>>8)|(((A)&0xff00)<<8)|((A)<<24))
#define ntohs(A) (unsigned short)((((A)&0xff00)>>8)|((A)<<8))
#else
#define ntohl(A) A
#define ntohs(A) A
#endif
 
#define EI_NIDENT 16
#define SHT_PROGBITS 1
#define SHT_STRTAB 3
#define SHT_NOBITS 8
 
typedef struct
{
   unsigned char  e_ident[EI_NIDENT];
   unsigned short e_e_type;
   unsigned short e_machine;
   unsigned long  e_version;
   unsigned long  e_entry;
   unsigned long  e_phoff;
   unsigned long  e_shoff;
   unsigned long  e_flags;
   unsigned short e_ehsize;
   unsigned short e_phentsize;
   unsigned short e_phnum;
   unsigned short e_shentsize;
   unsigned short e_shnum;
   unsigned short e_shstrndx;
} ElfHeader;
 
typedef struct
{
   unsigned long p_type;
   unsigned long p_offset;
   unsigned long p_vaddr;
   unsigned long p_paddr;
   unsigned long p_filesz;
   unsigned long p_memsz;
   unsigned long p_flags;
   unsigned long p_align;
} Elf32_Phdr;
 
typedef struct
{
   unsigned long sh_name;
   unsigned long sh_type;
   unsigned long sh_flags;
   unsigned long sh_addr;
   unsigned long sh_offset;
   unsigned long sh_size;
   unsigned long sh_link;
   unsigned long sh_info;
   unsigned long sh_addralign;
   unsigned long sh_entsize;
} Elf32_Shdr;
 
typedef struct
{
   unsigned long ri_gprmask;
   unsigned long ri_cprmask[4];
   unsigned long ri_gp_value;
} ELF_RegInfo;
 
#define PT_MIPS_REGINFO  0x70000000
#define SHT_MIPS_REGINFO 0x70000006
 
void set_low(unsigned char *ptr, unsigned long address, unsigned long value)
{
   unsigned long opcode;
   opcode = *(unsigned long *)(ptr + address);
   opcode = ntohl(opcode);
   opcode = (opcode & 0xffff0000) | (value & 0xffff);
   opcode = ntohl(opcode);
   *(unsigned long *)(ptr + address) = opcode;
}
 
int main(int argc, char *argv[])
{
   FILE *infile, *outfile, *txtfile;
   unsigned char *buf, *code;
   long size, stack_pointer;
   unsigned long length, d, i, gp_ptr = 0, gp_ptr_backup = 0;
   unsigned long bss_start = 0, bss_end = 0;
 
   ElfHeader *elfHeader;
   Elf32_Phdr *elfProgram;
   ELF_RegInfo *elfRegInfo;
   Elf32_Shdr *elfSection;
   (void)argc;
   (void)argv;
 
   printf("test.exe -> code.txt & test.bin\n");
   infile = fopen("test.exe", "rb");
   if(infile == NULL)
   {
      printf("Can't open test.exe");
      return 0;
   }
   buf = (unsigned char *)malloc(BUF_SIZE);
   size = (int)fread(buf, 1, BUF_SIZE, infile);
   fclose(infile);
   code = (unsigned char *)malloc(BUF_SIZE);
   memset(code, 0, BUF_SIZE);
 
   elfHeader = (ElfHeader *)buf;
   if(strncmp((char*)elfHeader->e_ident + 1, "ELF", 3))
   {
      printf("Error:  Not an ELF file!\n");
      printf("Use the gccmips_elf.zip from opencores/projects/plasma!\n");
      return -1;
   }
 
   elfHeader->e_entry = ntohl(elfHeader->e_entry);
   elfHeader->e_phoff = ntohl(elfHeader->e_phoff);
   elfHeader->e_shoff = ntohl(elfHeader->e_shoff);
   elfHeader->e_flags = ntohl(elfHeader->e_flags);
   elfHeader->e_phentsize = ntohs(elfHeader->e_phentsize);
   elfHeader->e_phnum = ntohs(elfHeader->e_phnum);
   elfHeader->e_shentsize = ntohs(elfHeader->e_shentsize);
   elfHeader->e_shnum = ntohs(elfHeader->e_shnum);
   printf("Entry=0x%x ", elfHeader->e_entry);
   length = 0;
 
   for(i = 0; i < elfHeader->e_phnum; ++i)
   {
      elfProgram = (Elf32_Phdr *)(buf + elfHeader->e_phoff +
                         elfHeader->e_phentsize * i);
      elfProgram->p_type = ntohl(elfProgram->p_type);
      elfProgram->p_offset = ntohl(elfProgram->p_offset);
      elfProgram->p_vaddr = ntohl(elfProgram->p_vaddr);
      elfProgram->p_filesz = ntohl(elfProgram->p_filesz);
      elfProgram->p_memsz = ntohl(elfProgram->p_memsz);
      elfProgram->p_flags = ntohl(elfProgram->p_flags);
 
      elfProgram->p_vaddr -= elfHeader->e_entry;
 
      if(elfProgram->p_type == PT_MIPS_REGINFO)
      {
         elfRegInfo = (ELF_RegInfo*)(buf + elfProgram->p_offset);
         gp_ptr = ntohl(elfRegInfo->ri_gp_value);
      }
      if(elfProgram->p_vaddr < BUF_SIZE)
      {
         //printf("[0x%x,0x%x,0x%x,0x%x,0x%x]\n", elfProgram->p_vaddr,
         //   elfProgram->p_offset, elfProgram->p_filesz, elfProgram->p_memsz,
         //   elfProgram->p_flags);
         memcpy(code + elfProgram->p_vaddr, buf + elfProgram->p_offset,
                 elfProgram->p_filesz);
         length = elfProgram->p_vaddr + elfProgram->p_filesz;
         //printf("length = %d 0x%x\n", length, length);
      }
   }
 
   for(i = 0; i < elfHeader->e_shnum; ++i)
   {
      elfSection = (Elf32_Shdr *)(buf + elfHeader->e_shoff +
                         elfHeader->e_shentsize * i);
      elfSection->sh_name = ntohl(elfSection->sh_name);
      elfSection->sh_type = ntohl(elfSection->sh_type);
      elfSection->sh_addr = ntohl(elfSection->sh_addr);
      elfSection->sh_offset = ntohl(elfSection->sh_offset);
      elfSection->sh_size = ntohl(elfSection->sh_size);
 
      if(elfSection->sh_type == SHT_MIPS_REGINFO)
      {
         elfRegInfo = (ELF_RegInfo*)(buf + elfSection->sh_offset);
         gp_ptr = ntohl(elfRegInfo->ri_gp_value);
      }
      if(elfSection->sh_type == SHT_PROGBITS)
      {
         //printf("elfSection->sh_addr=0x%x\n", elfSection->sh_addr);
         if(elfSection->sh_addr > gp_ptr_backup)
            gp_ptr_backup = elfSection->sh_addr;
      }
      if(elfSection->sh_type == SHT_NOBITS)
      {
         if(bss_start == 0)
         {
            bss_start = elfSection->sh_addr;
         }
         bss_end = elfSection->sh_addr + elfSection->sh_size;
      }
   }
 
   if(length > bss_start - elfHeader->e_entry)
   {
      length = bss_start - elfHeader->e_entry;
   }
   if(bss_start == length)
   {
      bss_start = length;
      bss_end = length + 4;
   }
   if(gp_ptr == 0)
      gp_ptr = gp_ptr_backup + 0x7ff0;
 
   /*Initialize the $gp register for sdata and sbss */
   printf("gp_ptr=0x%x ", gp_ptr);
   /*modify the first opcodes in boot.asm */
   /*modify the lui opcode */
   set_low(code, 0, gp_ptr >> 16);
   /*modify the ori opcode */
   set_low(code, 4, gp_ptr & 0xffff);
 
   /*Clear .sbss and .bss */
   printf("sbss=0x%x bss_end=0x%x\nlength=0x%x ", bss_start, bss_end, length);
   set_low(code, 8, bss_start >> 16);
   set_low(code, 12, bss_start & 0xffff);
   set_low(code, 16, bss_end >> 16);
   set_low(code, 20, bss_end & 0xffff);
 
   /*Set stack pointer */
   if(elfHeader->e_entry < 0x10000000)
      stack_pointer = bss_end + 512;
   else
      stack_pointer = bss_end + 1024 * 4;
   stack_pointer &= ~7;
   printf("SP=0x%x\n", stack_pointer);
   set_low(code, 24, stack_pointer >> 16);
   set_low(code, 28, stack_pointer & 0xffff);
 
   /*write out test.bin */
   outfile = fopen("test.bin", "wb");
   fwrite(code, length, 1, outfile);
   fclose(outfile);
 
   /*write out code.txt */
   txtfile = fopen("code.txt", "w");
   for(i = 0; i <= length; i += 4)
   {
      d = ntohl(*(unsigned long *)(code + i));
      fprintf(txtfile, "%8.8x\n", d);
   }
   fclose(txtfile);
   free(buf);
 
   return 0;
}
 

Line No.	Rev	Author	Line
1	2	rhoads	`//convert.c by Steve Rhoads 4/26/01`
2	133	rhoads	`//Now uses the ELF format (get gccmips_elf.zip)`
3	27	rhoads	`//set $gp and zero .sbss and .bss`
4	136	rhoads	`//Reads test.exe and creates code.txt`
5	2	rhoads	`#include <stdio.h>`
6			`#include <stdlib.h>`
7	65	rhoads	`#include <string.h>`
8	2	rhoads
9	136	rhoads	`#define BUF_SIZE (102410244)`
10	34	rhoads	`/Assumes running on PC little endian/`
11	169	rhoads	`#ifndef LITTLE_ENDIAN`
12	65	rhoads	`#define ntohl(A) (((A)>>24)\|(((A)&0x00ff0000)>>8)\|(((A)&0xff00)<<8)\|((A)<<24))`
13	136	rhoads	`#define ntohs(A) (unsigned short)((((A)&0xff00)>>8)\|((A)<<8))`
14	169	rhoads	`#else`
15			`#define ntohl(A) A`
16			`#define ntohs(A) A`
17			`#endif`
18	2	rhoads
19	65	rhoads	`#define EI_NIDENT 16`
20			`#define SHT_PROGBITS 1`
21			`#define SHT_STRTAB 3`
22			`#define SHT_NOBITS 8`
23	27	rhoads
24	133	rhoads	`typedef struct`
25			`{`
26	65	rhoads	`unsigned char e_ident[EI_NIDENT];`
27			`unsigned short e_e_type;`
28			`unsigned short e_machine;`
29			`unsigned long e_version;`
30			`unsigned long e_entry;`
31			`unsigned long e_phoff;`
32			`unsigned long e_shoff;`
33			`unsigned long e_flags;`
34			`unsigned short e_ehsize;`
35			`unsigned short e_phentsize;`
36			`unsigned short e_phnum;`
37			`unsigned short e_shentsize;`
38			`unsigned short e_shnum;`
39			`unsigned short e_shstrndx;`
40	136	rhoads	`} ElfHeader;`
41	27	rhoads
42	133	rhoads	`typedef struct`
43			`{`
44	65	rhoads	`unsigned long p_type;`
45			`unsigned long p_offset;`
46			`unsigned long p_vaddr;`
47			`unsigned long p_paddr;`
48			`unsigned long p_filesz;`
49			`unsigned long p_memsz;`
50			`unsigned long p_flags;`
51			`unsigned long p_align;`
52	136	rhoads	`} Elf32_Phdr;`
53	65	rhoads
54	133	rhoads	`typedef struct`
55			`{`
56	65	rhoads	`unsigned long sh_name;`
57			`unsigned long sh_type;`
58			`unsigned long sh_flags;`
59			`unsigned long sh_addr;`
60			`unsigned long sh_offset;`
61			`unsigned long sh_size;`
62			`unsigned long sh_link;`
63			`unsigned long sh_info;`
64			`unsigned long sh_addralign;`
65			`unsigned long sh_entsize;`
66	136	rhoads	`} Elf32_Shdr;`
67	27	rhoads
68	136	rhoads	`typedef struct`
69			`{`
70			`unsigned long ri_gprmask;`
71			`unsigned long ri_cprmask[4];`
72			`unsigned long ri_gp_value;`
73			`} ELF_RegInfo;`
74	65	rhoads
75	136	rhoads	`#define PT_MIPS_REGINFO 0x70000000`
76			`#define SHT_MIPS_REGINFO 0x70000006`
77
78			`void set_low(unsigned char *ptr, unsigned long address, unsigned long value)`
79	27	rhoads	`{`
80			`unsigned long opcode;`
81	133	rhoads	`opcode = (unsigned long )(ptr + address);`
82			`opcode = ntohl(opcode);`
83			`opcode = (opcode & 0xffff0000) \| (value & 0xffff);`
84			`opcode = ntohl(opcode);`
85			`(unsigned long )(ptr + address) = opcode;`
86	27	rhoads	`}`
87
88	133	rhoads	`int main(int argc, char *argv[])`
89	2	rhoads	`{`
90	133	rhoads	`FILE infile, outfile, *txtfile;`
91			`unsigned char buf, code;`
92			`long size, stack_pointer;`
93	136	rhoads	`unsigned long length, d, i, gp_ptr = 0, gp_ptr_backup = 0;`
94	133	rhoads	`unsigned long bss_start = 0, bss_end = 0;`
95	27	rhoads
96	65	rhoads	`ElfHeader *elfHeader;`
97			`Elf32_Phdr *elfProgram;`
98	136	rhoads	`ELF_RegInfo *elfRegInfo;`
99	65	rhoads	`Elf32_Shdr *elfSection;`
100	136	rhoads	`(void)argc;`
101			`(void)argv;`
102	65	rhoads
103	136	rhoads	`printf("test.exe -> code.txt & test.bin\n");`
104	133	rhoads	`infile = fopen("test.exe", "rb");`
105			`if(infile == NULL)`
106			`{`
107	2	rhoads	`printf("Can't open test.exe");`
108			`return 0;`
109			`}`
110	133	rhoads	`buf = (unsigned char *)malloc(BUF_SIZE);`
111			`size = (int)fread(buf, 1, BUF_SIZE, infile);`
112	2	rhoads	`fclose(infile);`
113	133	rhoads	`code = (unsigned char *)malloc(BUF_SIZE);`
114			`memset(code, 0, BUF_SIZE);`
115	27	rhoads
116	133	rhoads	`elfHeader = (ElfHeader *)buf;`
117	136	rhoads	`if(strncmp((char*)elfHeader->e_ident + 1, "ELF", 3))`
118	133	rhoads	`{`
119	65	rhoads	`printf("Error: Not an ELF file!\n");`
120			`printf("Use the gccmips_elf.zip from opencores/projects/plasma!\n");`
121			`return -1;`
122			`}`
123	34	rhoads
124	133	rhoads	`elfHeader->e_entry = ntohl(elfHeader->e_entry);`
125			`elfHeader->e_phoff = ntohl(elfHeader->e_phoff);`
126			`elfHeader->e_shoff = ntohl(elfHeader->e_shoff);`
127			`elfHeader->e_flags = ntohl(elfHeader->e_flags);`
128			`elfHeader->e_phentsize = ntohs(elfHeader->e_phentsize);`
129			`elfHeader->e_phnum = ntohs(elfHeader->e_phnum);`
130			`elfHeader->e_shentsize = ntohs(elfHeader->e_shentsize);`
131			`elfHeader->e_shnum = ntohs(elfHeader->e_shnum);`
132	136	rhoads	`printf("Entry=0x%x ", elfHeader->e_entry);`
133	133	rhoads	`length = 0;`
134	65	rhoads
135	133	rhoads	`for(i = 0; i < elfHeader->e_phnum; ++i)`
136			`{`
137			`elfProgram = (Elf32_Phdr *)(buf + elfHeader->e_phoff +`
138			`elfHeader->e_phentsize * i);`
139			`elfProgram->p_type = ntohl(elfProgram->p_type);`
140			`elfProgram->p_offset = ntohl(elfProgram->p_offset);`
141			`elfProgram->p_vaddr = ntohl(elfProgram->p_vaddr);`
142			`elfProgram->p_filesz = ntohl(elfProgram->p_filesz);`
143			`elfProgram->p_memsz = ntohl(elfProgram->p_memsz);`
144			`elfProgram->p_flags = ntohl(elfProgram->p_flags);`
145	136	rhoads
146			`elfProgram->p_vaddr -= elfHeader->e_entry;`
147
148			`if(elfProgram->p_type == PT_MIPS_REGINFO)`
149			`{`
150			`elfRegInfo = (ELF_RegInfo*)(buf + elfProgram->p_offset);`
151			`gp_ptr = ntohl(elfRegInfo->ri_gp_value);`
152			`}`
153	133	rhoads	`if(elfProgram->p_vaddr < BUF_SIZE)`
154			`{`
155	136	rhoads	`//printf("[0x%x,0x%x,0x%x,0x%x,0x%x]\n", elfProgram->p_vaddr,`
156			`// elfProgram->p_offset, elfProgram->p_filesz, elfProgram->p_memsz,`
157			`// elfProgram->p_flags);`
158	133	rhoads	`memcpy(code + elfProgram->p_vaddr, buf + elfProgram->p_offset,`
159			`elfProgram->p_filesz);`
160	136	rhoads	`length = elfProgram->p_vaddr + elfProgram->p_filesz;`
161			`//printf("length = %d 0x%x\n", length, length);`
162	133	rhoads	`}`
163	65	rhoads	`}`
164
165	133	rhoads	`for(i = 0; i < elfHeader->e_shnum; ++i)`
166			`{`
167			`elfSection = (Elf32_Shdr *)(buf + elfHeader->e_shoff +`
168			`elfHeader->e_shentsize * i);`
169			`elfSection->sh_name = ntohl(elfSection->sh_name);`
170			`elfSection->sh_type = ntohl(elfSection->sh_type);`
171			`elfSection->sh_addr = ntohl(elfSection->sh_addr);`
172			`elfSection->sh_offset = ntohl(elfSection->sh_offset);`
173			`elfSection->sh_size = ntohl(elfSection->sh_size);`
174
175	136	rhoads	`if(elfSection->sh_type == SHT_MIPS_REGINFO)`
176			`{`
177			`elfRegInfo = (ELF_RegInfo*)(buf + elfSection->sh_offset);`
178			`gp_ptr = ntohl(elfRegInfo->ri_gp_value);`
179			`}`
180	133	rhoads	`if(elfSection->sh_type == SHT_PROGBITS)`
181			`{`
182	136	rhoads	`//printf("elfSection->sh_addr=0x%x\n", elfSection->sh_addr);`
183			`if(elfSection->sh_addr > gp_ptr_backup)`
184			`gp_ptr_backup = elfSection->sh_addr;`
185	27	rhoads	`}`
186	133	rhoads	`if(elfSection->sh_type == SHT_NOBITS)`
187			`{`
188			`if(bss_start == 0)`
189			`{`
190			`bss_start = elfSection->sh_addr;`
191	65	rhoads	`}`
192	133	rhoads	`bss_end = elfSection->sh_addr + elfSection->sh_size;`
193	65	rhoads	`}`
194	27	rhoads	`}`
195
196	136	rhoads	`if(length > bss_start - elfHeader->e_entry)`
197			`{`
198			`length = bss_start - elfHeader->e_entry;`
199			`}`
200	133	rhoads	`if(bss_start == length)`
201			`{`
202			`bss_start = length;`
203			`bss_end = length + 4;`
204	65	rhoads	`}`
205	136	rhoads	`if(gp_ptr == 0)`
206			`gp_ptr = gp_ptr_backup + 0x7ff0;`
207	65	rhoads
208	133	rhoads	`/Initialize the $gp register for sdata and sbss /`
209			`printf("gp_ptr=0x%x ", gp_ptr);`
210			`/modify the first opcodes in boot.asm /`
211			`/modify the lui opcode /`
212			`set_low(code, 0, gp_ptr >> 16);`
213			`/modify the ori opcode /`
214			`set_low(code, 4, gp_ptr & 0xffff);`
215	27	rhoads
216	133	rhoads	`/Clear .sbss and .bss /`
217	136	rhoads	`printf("sbss=0x%x bss_end=0x%x\nlength=0x%x ", bss_start, bss_end, length);`
218	133	rhoads	`set_low(code, 8, bss_start >> 16);`
219			`set_low(code, 12, bss_start & 0xffff);`
220			`set_low(code, 16, bss_end >> 16);`
221			`set_low(code, 20, bss_end & 0xffff);`
222	27	rhoads
223	133	rhoads	`/Set stack pointer /`
224	136	rhoads	`if(elfHeader->e_entry < 0x10000000)`
225			`stack_pointer = bss_end + 512;`
226			`else`
227			`stack_pointer = bss_end + 1024 * 4;`
228			`stack_pointer &= ~7;`
229			`printf("SP=0x%x\n", stack_pointer);`
230	133	rhoads	`set_low(code, 24, stack_pointer >> 16);`
231			`set_low(code, 28, stack_pointer & 0xffff);`
232	47	rhoads
233	136	rhoads	`/write out test.bin /`
234			`outfile = fopen("test.bin", "wb");`
235	133	rhoads	`fwrite(code, length, 1, outfile);`
236	65	rhoads	`fclose(outfile);`
237
238	136	rhoads	`/write out code.txt /`
239	133	rhoads	`txtfile = fopen("code.txt", "w");`
240			`for(i = 0; i <= length; i += 4)`
241			`{`
242			`d = ntohl((unsigned long )(code + i));`
243			`fprintf(txtfile, "%8.8x\n", d);`
244	2	rhoads	`}`
245	26	rhoads	`fclose(txtfile);`
246	2	rhoads	`free(buf);`
247	27	rhoads
248	2	rhoads	`return 0;`
249			`}`
250

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[/] [plasma/] [trunk/] [tools/] [convert.c] - Blame information for rev 169