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| author | midipix <writeonce@midipix.org> | 2015-12-22 23:26:55 -0500 |
|---|---|---|
| committer | midipix <writeonce@midipix.org> | 2016-11-11 00:22:30 -0500 |
| commit | efc615e033a4e0e3ed23e62edb3053a80a43b437 (patch) | |
| tree | ac71d2250aa814be9a718b45cf03e2d66a59bd15 | |
| parent | 67025de5a14bc568da8576b1a0cbded6ebedf7f2 (diff) | |
| download | mdso-efc615e033a4e0e3ed23e62edb3053a80a43b437.tar.bz2 mdso-efc615e033a4e0e3ed23e62edb3053a80a43b437.tar.xz | |
mdso_generate_symentry(): initial implementation.
| -rw-r--r-- | include/mdso/mdso.h | 1 | ||||
| -rw-r--r-- | project/common.mk | 1 | ||||
| -rw-r--r-- | src/logic/mdso_generate_symentry.c | 60 |
3 files changed, 62 insertions, 0 deletions
diff --git a/include/mdso/mdso.h b/include/mdso/mdso.h index f912fe8..2ac8dd4 100644 --- a/include/mdso/mdso.h +++ b/include/mdso/mdso.h @@ -91,6 +91,7 @@ mdso_api int mdso_output_export_symbols(const struct mdso_unit_ctx *, const str mdso_api uint32_t mdso_crc32_mbstr (const unsigned char * str, size_t * symlen); mdso_api uint64_t mdso_crc64_mbstr (const unsigned char * str, size_t * symlen); mdso_api FILE * mdso_create_output (const struct mdso_driver_ctx *, const char * asmname); +mdso_api int mdso_generate_symentry(const struct mdso_common_ctx *, const char * sym, FILE * fout); #ifdef __cplusplus } diff --git a/project/common.mk b/project/common.mk index 2d7fad1..2533550 100644 --- a/project/common.mk +++ b/project/common.mk @@ -3,6 +3,7 @@ COMMON_SRCS = \ src/crc/mdso_crc32.c \ src/driver/mdso_driver_ctx.c \ src/driver/mdso_unit_ctx.c \ + src/logic/mdso_generate_symentry.c \ src/logic/mdso_map_input.c \ src/output/mdso_create_output.c \ src/output/mdso_output_export_symbols.c \ diff --git a/src/logic/mdso_generate_symentry.c b/src/logic/mdso_generate_symentry.c new file mode 100644 index 0000000..df55186 --- /dev/null +++ b/src/logic/mdso_generate_symentry.c @@ -0,0 +1,60 @@ +/****************************************************************/ +/* mdso: midipix dso scavenger */ +/* Copyright (C) 2015 Z. Gilboa */ +/* Released under GPLv2 and GPLv3; see COPYING.MDSO. */ +/****************************************************************/ + +#include <stdint.h> +#include <stdio.h> +#include <mdso/mdso.h> +#include <mdso/mdso_specs.h> + +static const char * const asm_lines[] = { + "\t.file \"__%s_sym_entry.s\"\n", + + "\t.section " MDSO_STRS_SECTION ",\"r\"\n", + "\t.globl .__dsostr_%s\n", + "\t.balign 2\n\n", + ".__dsostr_%s:\n", + "\t.ascii\t\"%s\\0\"\n\n" + + "\t.section " MDSO_SYMS_SECTION ",\"r\"\n", + "\t.globl __imp_%s\n", + 0 +}; + +int mdso_generate_symentry( + const struct mdso_common_ctx * cctx, + const char * sym, + FILE * fout) +{ + const char * const * line; + const char * alignstr; + const char * ptrsize; + + if (cctx->drvflags & MDSO_DRIVER_QUAD_PTR) { + alignstr = "\t.balign 16\n\n"; + ptrsize = ".quad"; + } else { + alignstr = "\t.balign 8\n\n"; + ptrsize = ".long"; + } + + for (line=asm_lines; *line; line++) + if ((fprintf(fout,*line,sym)) < 0) + return -1; + + if ((fputs(alignstr,fout)) < 0) + return -1; + + if ((fprintf(fout,"__imp_%s:\n",sym)) < 0) + return -1; + + if ((fprintf(fout,"\t%s\t.__dsostr_%s\n",ptrsize,sym)) < 0) + return -1; + + if ((fprintf(fout,"\t%s\t.__dsometa_%s\n",ptrsize,cctx->libname)) < 0) + return -1; + + return 0; +} |