Revision d219f7e7
| b/dyngen.c | ||
|---|---|---|
| 110 | 110 |
|
| 111 | 111 |
#include "thunk.h" |
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enum {
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OUT_GEN_OP, |
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OUT_CODE, |
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OUT_INDEX_OP, |
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}; |
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|
|
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/* all dynamically generated functions begin with this code */ |
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#define OP_PREFIX "op_" |
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|
| ... | ... | |
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} |
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|
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/* load an elf object file */ |
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int load_elf(const char *filename, FILE *outfile, int do_print_enum)
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int load_elf(const char *filename, FILE *outfile, int out_type)
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|
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{
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int fd; |
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struct elf_shdr *sec, *symtab_sec, *strtab_sec, *text_sec; |
| ... | ... | |
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} |
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} |
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if (do_print_enum) {
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if (out_type == OUT_INDEX_OP) {
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fprintf(outfile, "DEF(end, 0, 0)\n"); |
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for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
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const char *name, *p; |
| ... | ... | |
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text, relocs, nb_relocs, 2); |
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} |
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} |
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} else if (out_type == OUT_GEN_OP) {
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/* generate gen_xxx functions */ |
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|
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for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
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const char *name; |
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name = strtab + sym->st_name; |
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if (strstart(name, OP_PREFIX, NULL)) {
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if (sym->st_shndx != (text_sec - shdr)) |
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error("invalid section for opcode (0x%x)", sym->st_shndx);
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gen_code(name, sym->st_value, sym->st_size, outfile, |
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text, relocs, nb_relocs, 0); |
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} |
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} |
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|
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} else {
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/* generate big code generation switch */ |
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fprintf(outfile, |
| ... | ... | |
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default: |
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error("unknown ELF architecture");
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} |
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|
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/* flush instruction cache */ |
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fprintf(outfile, "flush_icache_range((unsigned long)gen_code_buf, (unsigned long)gen_code_ptr);\n"); |
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|
|
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fprintf(outfile, "return gen_code_ptr - gen_code_buf;\n"); |
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fprintf(outfile, "}\n\n"); |
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|
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/* generate gen_xxx functions */ |
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/* XXX: suppress the use of these functions to simplify code */ |
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for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
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const char *name; |
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name = strtab + sym->st_name; |
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if (strstart(name, OP_PREFIX, NULL)) {
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if (sym->st_shndx != (text_sec - shdr)) |
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error("invalid section for opcode (0x%x)", sym->st_shndx);
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gen_code(name, sym->st_value, sym->st_size, outfile, |
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text, relocs, nb_relocs, 0); |
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} |
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} |
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} |
| 1325 | 1335 |
|
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close(fd); |
| ... | ... | |
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"usage: dyngen [-o outfile] [-c] objfile\n" |
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"Generate a dynamic code generator from an object file\n" |
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"-c output enum of operations\n" |
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"-g output gen_op_xx() functions\n" |
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); |
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exit(1); |
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} |
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|
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int main(int argc, char **argv) |
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{
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int c, do_print_enum;
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int c, out_type;
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const char *filename, *outfilename; |
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FILE *outfile; |
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outfilename = "out.c"; |
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do_print_enum = 0;
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out_type = OUT_CODE;
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for(;;) {
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c = getopt(argc, argv, "ho:c"); |
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c = getopt(argc, argv, "ho:cg");
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if (c == -1) |
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break; |
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switch(c) {
|
| ... | ... | |
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outfilename = optarg; |
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break; |
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case 'c': |
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do_print_enum = 1; |
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out_type = OUT_INDEX_OP; |
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break; |
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case 'g': |
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out_type = OUT_GEN_OP; |
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break; |
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} |
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} |
| ... | ... | |
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outfile = fopen(outfilename, "w"); |
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if (!outfile) |
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error("could not open '%s'", outfilename);
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load_elf(filename, outfile, do_print_enum);
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load_elf(filename, outfile, out_type);
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fclose(outfile); |
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return 0; |
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} |
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