#define SYM_GLOBAL 0x10
+#define SHT_RELA 4 /* Relocation entries with addends */
+
#define STT_NOTYPE 0 /* Symbol type is unspecified */
#define STT_OBJECT 1 /* Symbol is a data object */
#define STT_FUNC 2 /* Symbol is a code object */
#define SEG_ALIGN 16 /* alignment of sections in file */
#define SEG_ALIGN_1 (SEG_ALIGN-1)
+/* Definitions in lieu of dwarf.h */
+#define DW_TAG_compile_unit 0x11
+#define DW_TAG_subprogram 0x2e
+#define DW_AT_name 0x03
+#define DW_AT_stmt_list 0x10
+#define DW_AT_low_pc 0x11
+#define DW_AT_high_pc 0x12
+#define DW_AT_language 0x13
+#define DW_AT_producer 0x25
+#define DW_AT_frame_base 0x40
+#define DW_FORM_addr 0x01
+#define DW_FORM_data2 0x05
+#define DW_FORM_data4 0x06
+#define DW_FORM_string 0x08
+#define DW_LNS_extended_op 0
+#define DW_LNS_advance_pc 2
+#define DW_LNS_advance_line 3
+#define DW_LNS_set_file 4
+#define DW_LNE_end_sequence 1
+#define DW_LNE_set_address 2
+#define DW_LNE_define_file 3
+#define DW_LANG_Mips_Assembler 0x8001
+
+#define SOC(ln,aa) ln - line_base + (line_range * aa) + opcode_base
+#if X86_MEMORY
+
+#define WSAACHAR(s,p,v) \
+ do { \
+ *(uint8_t *)(p) = (v); \
+ saa_wbytes(s, p, 1); \
+ } while (0)
+
+#define WSAASHORT(s,p,v) \
+ do { \
+ *(uint16_t *)(p) = (v); \
+ saa_wbytes(s, p, 2); \
+ } while (0)
+
+#define WSAALONG(s,p,v) \
+ do { \
+ *(uint32_t *)(p) = (v); \
+ saa_wbytes(s, p, 4); \
+ } while (0)
+
+#else /* !X86_MEMORY */
+
+#define WSAACHAR(s,p,v) \
+ do { \
+ *(uint8_t *)p = (v); \
+ saa_wbytes(s, p, 1); \
+ } while (0)
+
+#define WSAASHORT(s,p,v) \
+ do { \
+ uint16_t _v = (v); \
+ uint8_t *_p = (uint8_t *)(p); \
+ _p[0] = _v; \
+ _p[1] = _v >> 8; \
+ saa_wbytes(s, _p, 2); \
+ } while (0)
+
+#define WSAALONG(s,p,v) \
+ do { \
+ uint32_t _v = (v); \
+ uint8_t *_p = (uint8_t *)(p); \
+ _p[0] = _v; \
+ _p[1] = _v >> 8; \
+ _p[2] = _v >> 16; \
+ _p[3] = _v >> 24; \
+ saa_wbytes(s, _p, 4); \
+ } while (0)
+
+#endif
static const char align_str[SEG_ALIGN] = ""; /* ANSI will pad this with 0s */
static struct ELF_SECTDATA {
int32_t len;
bool is_saa;
} *elf_sects;
-static int elf_nsect;
+static int elf_nsect, nsections;
static int32_t elf_foffs;
static void elf_write(void);
struct linelist *last;
};
+struct sectlist {
+ struct SAA *psaa;
+ int section;
+ int line;
+ int offset;
+ int file;
+ struct sectlist *next;
+ struct sectlist *last;
+};
+
+/* common debug variables */
+static int currentline = 1;
+static int debug_immcall = 0;
+
+/* stabs debug variables */
static struct linelist *stabslines = 0;
-static int stabs_immcall = 0;
-static int currentline = 0;
static int numlinestabs = 0;
static char *stabs_filename = 0;
static int symtabsection;
static uint8_t *stabbuf = 0, *stabstrbuf = 0, *stabrelbuf = 0;
static int stablen, stabstrlen, stabrellen;
+/* dwarf debug variables */
+static struct linelist *dwarf_flist = 0, *dwarf_clist = 0, *dwarf_elist = 0;
+static struct sectlist *dwarf_fsect = 0, *dwarf_csect = 0, *dwarf_esect = 0;
+static int dwarf_numfiles = 0, dwarf_nsections;
+static uint8_t *arangesbuf = 0, *arangesrelbuf = 0, *pubnamesbuf = 0, *infobuf = 0, *inforelbuf = 0,
+ *abbrevbuf = 0, *linebuf = 0, *linerelbuf = 0, *framebuf = 0, *locbuf = 0;
+static int8_t line_base = -5, line_range = 14, opcode_base = 13;
+static int arangeslen, arangesrellen, pubnameslen, infolen, inforellen,
+ abbrevlen, linelen, linerellen, framelen, loclen;
+static int32_t dwarf_infosym, dwarf_abbrevsym, dwarf_linesym;
+static char workbuf[1024];
+
+static struct dfmt df_dwarf;
static struct dfmt df_stabs;
static struct Symbol *lastsym;
-void stabs32_init(struct ofmt *, void *, FILE *, efunc);
+/* common debugging routines */
+void debug32_typevalue(int32_t);
+void debug32_init(struct ofmt *, void *, FILE *, efunc);
+void debug32_deflabel(char *, int32_t, int64_t, int, char *);
+void debug32_directive(const char *, const char *);
+
+/* stabs debugging routines */
void stabs32_linenum(const char *filename, int32_t linenumber, int32_t);
-void stabs32_deflabel(char *, int32_t, int64_t, int, char *);
-void stabs32_directive(const char *, const char *);
-void stabs32_typevalue(int32_t);
void stabs32_output(int, void *);
void stabs32_generate(void);
void stabs32_cleanup(void);
-/* end of stabs debugging stuff */
+/* dwarf debugging routines */
+void dwarf32_linenum(const char *filename, int32_t linenumber, int32_t);
+void dwarf32_output(int, void *);
+void dwarf32_generate(void);
+void dwarf32_cleanup(void);
+void dwarf32_findfile(const char *);
+void dwarf32_findsect(const int);
+void saa_wleb128u(struct SAA *, int);
+void saa_wleb128s(struct SAA *, int);
/*
* Special section numbers which are used to define ELF special
static void elf_write(void)
{
- int nsections, align;
+ int align;
int scount;
char *p;
int commlen;
*/
if (of_elf32.current_dfmt == &df_stabs)
nsections = 8;
+ else if (of_elf32.current_dfmt == &df_dwarf)
+ nsections = 15;
else
nsections = 5; /* SHN_UNDEF and the fixed ones */
add_sectname(".rel", ".stab");
}
+ else if (of_elf32.current_dfmt == &df_dwarf) {
+ /* the dwarf debug standard specifies the following ten sections,
+ not all of which are currently implemented,
+ although all of them are defined. */
+ #define debug_aranges (int32_t) (nsections-10)
+ #define debug_info (int32_t) (nsections-7)
+ #define debug_abbrev (int32_t) (nsections-5)
+ #define debug_line (int32_t) (nsections-4)
+ add_sectname("", ".debug_aranges");
+ add_sectname(".rela", ".debug_aranges");
+ add_sectname("", ".debug_pubnames");
+ add_sectname("", ".debug_info");
+ add_sectname(".rela", ".debug_info");
+ add_sectname("", ".debug_abbrev");
+ add_sectname("", ".debug_line");
+ add_sectname(".rela", ".debug_line");
+ add_sectname("", ".debug_frame");
+ add_sectname("", ".debug_loc");
+ }
+
/*
* Do the comment.
*/
align = ((elf_foffs + SEG_ALIGN_1) & ~SEG_ALIGN_1) - elf_foffs;
elf_foffs += align;
elf_nsect = 0;
- elf_sects = nasm_malloc(sizeof(*elf_sects) * (2 * nsects + 10));
+ elf_sects = nasm_malloc(sizeof(*elf_sects) * nsections);
elf_section_header(0, 0, 0, NULL, false, 0L, 0, 0, 0, 0); /* SHN_UNDEF */
scount = 1; /* needed for the stabs debugging to track the symtable section */
8);
}
}
+ else if (of_elf32.current_dfmt == &df_dwarf) {
+ /* for dwarf debugging information, create the ten dwarf sections */
+
+ /* this function call creates the dwarf sections in memory */
+ dwarf32_generate();
+
+ p += strlen(p) + 1;
+ elf_section_header(p - shstrtab, SHT_PROGBITS, 0, arangesbuf, false,
+ arangeslen, 0, 0, 1, 0);
+ p += strlen(p) + 1;
+ elf_section_header(p - shstrtab, SHT_RELA, 0, arangesrelbuf, false,
+ arangesrellen, symtabsection, debug_aranges, 1, 12);
+ p += strlen(p) + 1;
+ elf_section_header(p - shstrtab, SHT_PROGBITS, 0, pubnamesbuf, false,
+ pubnameslen, 0, 0, 1, 0);
+ p += strlen(p) + 1;
+ elf_section_header(p - shstrtab, SHT_PROGBITS, 0, infobuf, false,
+ infolen, 0, 0, 1, 0);
+ p += strlen(p) + 1;
+ elf_section_header(p - shstrtab, SHT_RELA, 0, inforelbuf, false,
+ inforellen, symtabsection, debug_info, 1, 12);
+ p += strlen(p) + 1;
+ elf_section_header(p - shstrtab, SHT_PROGBITS, 0, abbrevbuf, false,
+ abbrevlen, 0, 0, 1, 0);
+ p += strlen(p) + 1;
+ elf_section_header(p - shstrtab, SHT_PROGBITS, 0, linebuf, false,
+ linelen, 0, 0, 1, 0);
+ p += strlen(p) + 1;
+ elf_section_header(p - shstrtab, SHT_RELA, 0, linerelbuf, false,
+ linerellen, symtabsection, debug_line, 1, 12);
+ p += strlen(p) + 1;
+ elf_section_header(p - shstrtab, SHT_PROGBITS, 0, framebuf, false,
+ framelen, 0, 0, 8, 0);
+ p += strlen(p) + 1;
+ elf_section_header(p - shstrtab, SHT_PROGBITS, 0, locbuf, false,
+ loclen, 0, 0, 1, 0);
+
+ }
fwrite(align_str, align, 1, elffp);
/*
*len += 16;
(*local)++;
}
+ /*
+ * dwarf needs symbols for debug sections
+ * which are relocation targets.
+ */
+//*** fix for 32 bit
+ if (of_elf32.current_dfmt == &df_dwarf) {
+ dwarf_infosym = *local;
+ p = entry;
+ WRITELONG(p, 0); /* no symbol name */
+ WRITELONG(p, (uint32_t) 0); /* offset zero */
+ WRITELONG(p, (uint32_t) 0); /* size zero */
+ WRITESHORT(p, STT_SECTION); /* type, binding, and visibility */
+ WRITESHORT(p, debug_info); /* section id */
+ saa_wbytes(s, entry, 16L);
+ *len += 16;
+ (*local)++;
+ dwarf_abbrevsym = *local;
+ p = entry;
+ WRITELONG(p, 0); /* no symbol name */
+ WRITELONG(p, (uint32_t) 0); /* offset zero */
+ WRITELONG(p, (uint32_t) 0); /* size zero */
+ WRITESHORT(p, STT_SECTION); /* type, binding, and visibility */
+ WRITESHORT(p, debug_abbrev); /* section id */
+ saa_wbytes(s, entry, 16L);
+ *len += 16;
+ (*local)++;
+ dwarf_linesym = *local;
+ p = entry;
+ WRITELONG(p, 0); /* no symbol name */
+ WRITELONG(p, (uint32_t) 0); /* offset zero */
+ WRITELONG(p, (uint32_t) 0); /* size zero */
+ WRITESHORT(p, STT_SECTION); /* type, binding, and visibility */
+ WRITESHORT(p, debug_line); /* section id */
+ saa_wbytes(s, entry, 16L);
+ *len += 16;
+ (*local)++;
+ }
/*
* Now the global symbols.
(void)val;
return 0;
}
-
+static struct dfmt df_dwarf = {
+ "elf32 (X86_64) dwarf debug format for Linux",
+ "dwarf",
+ debug32_init,
+ dwarf32_linenum,
+ debug32_deflabel,
+ debug32_directive,
+ debug32_typevalue,
+ dwarf32_output,
+ dwarf32_cleanup
+};
static struct dfmt df_stabs = {
"ELF32 (i386) stabs debug format for Linux",
"stabs",
- stabs32_init,
+ debug32_init,
stabs32_linenum,
- stabs32_deflabel,
- stabs32_directive,
- stabs32_typevalue,
+ debug32_deflabel,
+ debug32_directive,
+ debug32_typevalue,
stabs32_output,
stabs32_cleanup
};
-struct dfmt *elf32_debugs_arr[2] = { &df_stabs, NULL };
+struct dfmt *elf32_debugs_arr[3] = { &df_stabs, &df_dwarf, NULL };
struct ofmt of_elf32 = {
"ELF32 (i386) object files (e.g. Linux)",
};
/* again, the stabs debugging stuff (code) */
-void stabs32_init(struct ofmt *of, void *id, FILE * fp, efunc error)
+void debug32_init(struct ofmt *of, void *id, FILE * fp, efunc error)
{
(void)of;
(void)id;
strcpy(stabs_filename, filename);
}
}
- stabs_immcall = 1;
+ debug_immcall = 1;
currentline = linenumber;
}
-void stabs32_deflabel(char *name, int32_t segment, int64_t offset, int is_global,
+void debug32_deflabel(char *name, int32_t segment, int64_t offset, int is_global,
char *special)
{
(void)name;
(void)special;
}
-void stabs32_directive(const char *directive, const char *params)
+void debug32_directive(const char *directive, const char *params)
{
(void)directive;
(void)params;
}
-void stabs32_typevalue(int32_t type)
+void debug32_typevalue(int32_t type)
{
int32_t stype, ssize;
switch (TYM_TYPE(type)) {
struct symlininfo *s;
struct linelist *el;
if (type == TY_STABSSYMLIN) {
- if (stabs_immcall) {
+ if (debug_immcall) {
s = (struct symlininfo *)param;
if (!(sects[s->section]->flags & SHF_EXECINSTR))
return; /* we are only interested in the text stuff */
}
}
}
- stabs_immcall = 0;
+ debug_immcall = 0;
}
#define WRITE_STAB(p,n_strx,n_type,n_other,n_desc,n_value) \
if (stabstrbuf)
nasm_free(stabstrbuf);
}
+/* dwarf routines */
+
+
+void dwarf32_linenum(const char *filename, int32_t linenumber, int32_t segto)
+{
+ (void)segto;
+ dwarf32_findfile(filename);
+ debug_immcall = 1;
+ currentline = linenumber;
+}
+
+/* called from elf_out with type == TY_DEBUGSYMLIN */
+void dwarf32_output(int type, void *param)
+{
+ int ln, aa, inx, maxln, soc;
+ struct symlininfo *s;
+ struct SAA *plinep;
+
+ (void)type;
+
+ s = (struct symlininfo *)param;
+ /* line number info is only gathered for executable sections */
+ if (!(sects[s->section]->flags & SHF_EXECINSTR))
+ return;
+ /* Check if section index has changed */
+ if (!(dwarf_csect && (dwarf_csect->section) == (s->section)))
+ {
+ dwarf32_findsect(s->section);
+ }
+ /* do nothing unless line or file has changed */
+ if (debug_immcall)
+ {
+ ln = currentline - dwarf_csect->line;
+ aa = s->offset - dwarf_csect->offset;
+ inx = dwarf_clist->line;
+ plinep = dwarf_csect->psaa;
+ /* check for file change */
+ if (!(inx == dwarf_csect->file))
+ {
+ WSAACHAR(plinep,workbuf,DW_LNS_set_file);
+ WSAACHAR(plinep,workbuf,inx);
+ dwarf_csect->file = inx;
+ }
+ /* check for line change */
+ if (ln)
+ {
+ /* test if in range of special op code */
+ maxln = line_base + line_range;
+ soc = (ln - line_base) + (line_range * aa) + opcode_base;
+ if (ln >= line_base && ln < maxln && soc < 256)
+ {
+ WSAACHAR(plinep,workbuf,soc);
+ }
+ else
+ {
+ if (ln)
+ {
+ WSAACHAR(plinep,workbuf,DW_LNS_advance_line);
+ saa_wleb128s(plinep,ln);
+ }
+ if (aa)
+ {
+ WSAACHAR(plinep,workbuf,DW_LNS_advance_pc);
+ saa_wleb128u(plinep,aa);
+ }
+ }
+ dwarf_csect->line = currentline;
+ dwarf_csect->offset = s->offset;
+ }
+ /* show change handled */
+ debug_immcall = 0;
+ }
+}
+
+
+void dwarf32_generate(void)
+{
+ uint8_t *pbuf;
+ int indx;
+ struct linelist *ftentry;
+ struct SAA *paranges, *ppubnames, *pinfo, *pabbrev, *plines, *plinep;
+ struct SAA *parangesrel, *plinesrel, *pinforel;
+ struct sectlist *psect;
+ size_t saalen, linepoff, totlen, highaddr;
+
+ /* write epilogues for each line program range */
+ /* and build aranges section */
+ paranges = saa_init(1L);
+ parangesrel = saa_init(1L);
+ WSAASHORT(paranges,workbuf,3); /* dwarf version */
+ WSAALONG(parangesrel,workbuf, paranges->datalen+4);
+ WSAALONG(parangesrel,workbuf, (dwarf_infosym << 8) + R_386_32); /* reloc to info */
+ WSAALONG(parangesrel,workbuf, (uint32_t) 0);
+ WSAALONG(paranges,workbuf,0); /* offset into info */
+ WSAACHAR(paranges,workbuf,4); /* pointer size */
+ WSAACHAR(paranges,workbuf,0); /* not segmented */
+ WSAALONG(paranges,workbuf,0); /* padding */
+ /* iterate though sectlist entries */
+ psect = dwarf_fsect;
+ totlen = 0;
+ highaddr = 0;
+ for (indx = 0; indx < dwarf_nsections; indx++)
+ {
+ plinep = psect->psaa;
+ /* Line Number Program Epilogue */
+ WSAACHAR(plinep,workbuf,2); /* std op 2 */
+ WSAACHAR(plinep,workbuf,(sects[psect->section]->len)-psect->offset);
+ WSAACHAR(plinep,workbuf,DW_LNS_extended_op);
+ WSAACHAR(plinep,workbuf,1); /* operand length */
+ WSAACHAR(plinep,workbuf,DW_LNE_end_sequence);
+ totlen += plinep->datalen;
+ /* range table relocation entry */
+ WSAALONG(parangesrel,workbuf, paranges->datalen + 4);
+ WSAALONG(parangesrel,workbuf, ((uint32_t) (psect->section + 2) << 8) + R_386_32);
+ WSAALONG(parangesrel,workbuf, (uint32_t) 0);
+ /* range table entry */
+ WSAALONG(paranges,workbuf,0x0000); /* range start */
+ WSAALONG(paranges,workbuf,sects[psect->section]->len); /* range length */
+ highaddr += sects[psect->section]->len;
+ /* done with this entry */
+ psect = psect->next;
+ }
+ WSAALONG(paranges,workbuf,0); /* null address */
+ WSAALONG(paranges,workbuf,0); /* null length */
+ saalen = paranges->datalen;
+ arangeslen = saalen + 4;
+ arangesbuf = pbuf = nasm_malloc(arangeslen);
+ WRITELONG(pbuf,saalen); /* initial length */
+ saa_rnbytes(paranges, pbuf, saalen);
+ saa_free(paranges);
+
+ /* build rela.aranges section */
+ arangesrellen = saalen = parangesrel->datalen;
+ arangesrelbuf = pbuf = nasm_malloc(arangesrellen);
+ saa_rnbytes(parangesrel, pbuf, saalen);
+ saa_free(parangesrel);
+
+ /* build pubnames section */
+ ppubnames = saa_init(1L);
+ WSAASHORT(ppubnames,workbuf,3); /* dwarf version */
+ WSAALONG(ppubnames,workbuf,0); /* offset into info */
+ WSAALONG(ppubnames,workbuf,0); /* space used in info */
+ WSAALONG(ppubnames,workbuf,0); /* end of list */
+ saalen = ppubnames->datalen;
+ pubnameslen = saalen + 4;
+ pubnamesbuf = pbuf = nasm_malloc(pubnameslen);
+ WRITELONG(pbuf,saalen); /* initial length */
+ saa_rnbytes(ppubnames, pbuf, saalen);
+ saa_free(ppubnames);
+
+ /* build info section */
+ pinfo = saa_init(1L);
+ pinforel = saa_init(1L);
+ WSAASHORT(pinfo,workbuf,3); /* dwarf version */
+ WSAALONG(pinforel,workbuf, pinfo->datalen + 4);
+ WSAALONG(pinforel,workbuf, (dwarf_abbrevsym << 8) + R_386_32); /* reloc to abbrev */
+ WSAALONG(pinforel,workbuf, (uint32_t) 0);
+ WSAALONG(pinfo,workbuf,0); /* offset into abbrev */
+ WSAACHAR(pinfo,workbuf,4); /* pointer size */
+ WSAACHAR(pinfo,workbuf,1); /* abbrviation number LEB128u */
+ WSAALONG(pinforel,workbuf, pinfo->datalen + 4);
+ WSAALONG(pinforel,workbuf, ((dwarf_fsect->section + 2) << 8) + R_386_32);
+ WSAALONG(pinforel,workbuf, (uint32_t) 0);
+ WSAALONG(pinfo,workbuf,0); /* DW_AT_low_pc */
+ WSAALONG(pinforel,workbuf, pinfo->datalen + 4);
+ WSAALONG(pinforel,workbuf, ((dwarf_fsect->section + 2) << 8) + R_386_32);
+ WSAALONG(pinforel,workbuf, (uint32_t) 0);
+ WSAALONG(pinfo,workbuf,highaddr); /* DW_AT_high_pc */
+ WSAALONG(pinforel,workbuf, pinfo->datalen + 4);
+ WSAALONG(pinforel,workbuf, (dwarf_linesym << 8) + R_386_32); /* reloc to line */
+ WSAALONG(pinforel,workbuf, (uint32_t) 0);
+ WSAALONG(pinfo,workbuf,0); /* DW_AT_stmt_list */
+ strcpy(workbuf,elf_module); /* input file name */
+ saa_wbytes(pinfo, workbuf, (int32_t)(strlen(elf_module) + 1));
+ sprintf(workbuf, "NASM %s", NASM_VER);
+ saa_wbytes(pinfo, workbuf, (int32_t)(strlen(workbuf) + 1));
+ WSAASHORT(pinfo,workbuf,DW_LANG_Mips_Assembler);
+ WSAACHAR(pinfo,workbuf,2); /* abbrviation number LEB128u */
+ WSAALONG(pinforel,workbuf, pinfo->datalen + 4);
+ WSAALONG(pinforel,workbuf, ((dwarf_fsect->section + 2) << 8) + R_386_32);
+ WSAALONG(pinforel,workbuf, (uint32_t) 0);
+ WSAALONG(pinfo,workbuf,0); /* DW_AT_low_pc */
+ WSAALONG(pinfo,workbuf,0); /* DW_AT_frame_base */
+ WSAACHAR(pinfo,workbuf,0); /* end of entries */
+ saalen = pinfo->datalen;
+ infolen = saalen + 4;
+ infobuf = pbuf = nasm_malloc(infolen);
+ WRITELONG(pbuf,saalen); /* initial length */
+ saa_rnbytes(pinfo, pbuf, saalen);
+ saa_free(pinfo);
+
+ /* build rela.info section */
+ inforellen = saalen = pinforel->datalen;
+ inforelbuf = pbuf = nasm_malloc(inforellen);
+ saa_rnbytes(pinforel, pbuf, saalen);
+ saa_free(pinforel);
+
+ /* build abbrev section */
+ pabbrev = saa_init(1L);
+ WSAACHAR(pabbrev,workbuf,1); /* entry number LEB128u */
+ WSAACHAR(pabbrev,workbuf,DW_TAG_compile_unit); /* tag LEB128u */
+ WSAACHAR(pabbrev,workbuf,1); /* has children */
+ /* the following attributes and forms are all LEB128u values */
+ WSAACHAR(pabbrev,workbuf,DW_AT_low_pc);
+ WSAACHAR(pabbrev,workbuf,DW_FORM_addr);
+ WSAACHAR(pabbrev,workbuf,DW_AT_high_pc);
+ WSAACHAR(pabbrev,workbuf,DW_FORM_addr);
+ WSAACHAR(pabbrev,workbuf,DW_AT_stmt_list);
+ WSAACHAR(pabbrev,workbuf,DW_FORM_data4);
+ WSAACHAR(pabbrev,workbuf,DW_AT_name);
+ WSAACHAR(pabbrev,workbuf,DW_FORM_string);
+ WSAACHAR(pabbrev,workbuf,DW_AT_producer);
+ WSAACHAR(pabbrev,workbuf,DW_FORM_string);
+ WSAACHAR(pabbrev,workbuf,DW_AT_language);
+ WSAACHAR(pabbrev,workbuf,DW_FORM_data2);
+ WSAASHORT(pabbrev,workbuf,0); /* end of entry */
+ /* LEB128u usage same as above */
+ WSAACHAR(pabbrev,workbuf,2); /* entry number */
+ WSAACHAR(pabbrev,workbuf,DW_TAG_subprogram);
+ WSAACHAR(pabbrev,workbuf,0); /* no children */
+ WSAACHAR(pabbrev,workbuf,DW_AT_low_pc);
+ WSAACHAR(pabbrev,workbuf,DW_FORM_addr);
+ WSAACHAR(pabbrev,workbuf,DW_AT_frame_base);
+ WSAACHAR(pabbrev,workbuf,DW_FORM_data4);
+ WSAASHORT(pabbrev,workbuf,0); /* end of entry */
+ abbrevlen = saalen = pabbrev->datalen;
+ abbrevbuf = pbuf = nasm_malloc(saalen);
+ saa_rnbytes(pabbrev, pbuf, saalen);
+ saa_free(pabbrev);
+
+ /* build line section */
+ /* prolog */
+ plines = saa_init(1L);
+ WSAACHAR(plines,workbuf,1); /* Minimum Instruction Length */
+ WSAACHAR(plines,workbuf,1); /* Initial value of 'is_stmt' */
+ WSAACHAR(plines,workbuf,line_base); /* Line Base */
+ WSAACHAR(plines,workbuf,line_range); /* Line Range */
+ WSAACHAR(plines,workbuf,opcode_base); /* Opcode Base */
+ /* standard opcode lengths (# of LEB128u operands) */
+ WSAACHAR(plines,workbuf,0); /* Std opcode 1 length */
+ WSAACHAR(plines,workbuf,1); /* Std opcode 2 length */
+ WSAACHAR(plines,workbuf,1); /* Std opcode 3 length */
+ WSAACHAR(plines,workbuf,1); /* Std opcode 4 length */
+ WSAACHAR(plines,workbuf,1); /* Std opcode 5 length */
+ WSAACHAR(plines,workbuf,0); /* Std opcode 6 length */
+ WSAACHAR(plines,workbuf,0); /* Std opcode 7 length */
+ WSAACHAR(plines,workbuf,0); /* Std opcode 8 length */
+ WSAACHAR(plines,workbuf,1); /* Std opcode 9 length */
+ WSAACHAR(plines,workbuf,0); /* Std opcode 10 length */
+ WSAACHAR(plines,workbuf,0); /* Std opcode 11 length */
+ WSAACHAR(plines,workbuf,1); /* Std opcode 12 length */
+ /* Directory Table */
+ WSAACHAR(plines,workbuf,0); /* End of table */
+ /* File Name Table */
+ ftentry = dwarf_flist;
+ for (indx = 0;indx<dwarf_numfiles;indx++)
+ {
+ saa_wbytes(plines, ftentry->filename, (int32_t)(strlen(ftentry->filename) + 1));
+ WSAACHAR(plines,workbuf,0); /* directory LEB128u */
+ WSAACHAR(plines,workbuf,0); /* time LEB128u */
+ WSAACHAR(plines,workbuf,0); /* size LEB128u */
+ ftentry = ftentry->next;
+ }
+ WSAACHAR(plines,workbuf,0); /* End of table */
+ linepoff = plines->datalen;
+ linelen = linepoff + totlen + 10;
+ linebuf = pbuf = nasm_malloc(linelen);
+ WRITELONG(pbuf,linelen-4); /* initial length */
+ WRITESHORT(pbuf,3); /* dwarf version */
+ WRITELONG(pbuf,linepoff); /* offset to line number program */
+ /* write line header */
+ saalen = linepoff;
+ saa_rnbytes(plines, pbuf, saalen); /* read a given no. of bytes */
+ pbuf += linepoff;
+ saa_free(plines);
+ /* concatonate line program ranges */
+ linepoff += 13;
+ plinesrel = saa_init(1L);
+ psect = dwarf_fsect;
+ for (indx = 0; indx < dwarf_nsections; indx++)
+ {
+ WSAALONG(plinesrel,workbuf, linepoff);
+ WSAALONG(plinesrel,workbuf, ((uint32_t) (psect->section + 2) << 8) + R_386_32);
+ WSAALONG(plinesrel,workbuf, (uint32_t) 0);
+ plinep = psect->psaa;
+ saalen = plinep->datalen;
+ saa_rnbytes(plinep, pbuf, saalen);
+ pbuf += saalen;
+ linepoff += saalen;
+ saa_free(plinep);
+ /* done with this entry */
+ psect = psect->next;
+ }
+
+
+ /* build rela.lines section */
+ linerellen =saalen = plinesrel->datalen;
+ linerelbuf = pbuf = nasm_malloc(linerellen);
+ saa_rnbytes(plinesrel, pbuf, saalen);
+ saa_free(plinesrel);
+
+ /* build frame section */
+ framelen = 4;
+ framebuf = pbuf = nasm_malloc(framelen);
+ WRITELONG(pbuf,framelen-4); /* initial length */
+
+ /* build loc section */
+ loclen = 16;
+ locbuf = pbuf = nasm_malloc(loclen);
+ WRITELONG(pbuf,0); /* null beginning offset */
+ WRITELONG(pbuf,0); /* null ending offset */
+}
+
+void dwarf32_cleanup(void)
+{
+ if (arangesbuf)
+ nasm_free(arangesbuf);
+ if (arangesrelbuf)
+ nasm_free(arangesrelbuf);
+ if (pubnamesbuf)
+ nasm_free(pubnamesbuf);
+ if (infobuf)
+ nasm_free(infobuf);
+ if (inforelbuf)
+ nasm_free(inforelbuf);
+ if (abbrevbuf)
+ nasm_free(abbrevbuf);
+ if (linebuf)
+ nasm_free(linebuf);
+ if (linerelbuf)
+ nasm_free(linerelbuf);
+ if (framebuf)
+ nasm_free(framebuf);
+ if (locbuf)
+ nasm_free(locbuf);
+}
+void dwarf32_findfile(const char * fname)
+{
+ int finx;
+ struct linelist *match;
+
+ /* return if fname is current file name */
+ if (dwarf_clist && !(strcmp(fname, dwarf_clist->filename))) return;
+ /* search for match */
+ else
+ {
+ match = 0;
+ if (dwarf_flist)
+ {
+ match = dwarf_flist;
+ for (finx = 0; finx < dwarf_numfiles; finx++)
+ {
+ if (!(strcmp(fname, match->filename)))
+ {
+ dwarf_clist = match;
+ return;
+ }
+ }
+ }
+ /* add file name to end of list */
+ dwarf_clist = (struct linelist *)nasm_malloc(sizeof(struct linelist));
+ dwarf_numfiles++;
+ dwarf_clist->line = dwarf_numfiles;
+ dwarf_clist->filename = nasm_malloc(strlen(fname) + 1);
+ strcpy(dwarf_clist->filename,fname);
+ dwarf_clist->next = 0;
+ /* if first entry */
+ if (!dwarf_flist)
+ {
+ dwarf_flist = dwarf_elist = dwarf_clist;
+ dwarf_clist->last = 0;
+ }
+ /* chain to previous entry */
+ else
+ {
+ dwarf_elist->next = dwarf_clist;
+ dwarf_elist = dwarf_clist;
+ }
+ }
+}
+/* */
+void dwarf32_findsect(const int index)
+{
+ int sinx;
+ struct sectlist *match;
+ struct SAA *plinep;
+ /* return if index is current section index */
+ if (dwarf_csect && (dwarf_csect->section == index))
+ {
+ return;
+ }
+ /* search for match */
+ else
+ {
+ match = 0;
+ if (dwarf_fsect)
+ {
+ match = dwarf_fsect;
+ for (sinx = 0; sinx < dwarf_nsections; sinx++)
+ {
+ if ((match->section == index))
+ {
+ dwarf_csect = match;
+ return;
+ }
+ match = match->next;
+ }
+ }
+ /* add entry to end of list */
+ dwarf_csect = (struct sectlist *)nasm_malloc(sizeof(struct sectlist));
+ dwarf_nsections++;
+ dwarf_csect->psaa = plinep = saa_init(1L);
+ dwarf_csect->line = 1;
+ dwarf_csect->offset = 0;
+ dwarf_csect->file = 1;
+ dwarf_csect->section = index;
+ dwarf_csect->next = 0;
+ /* set relocatable address at start of line program */
+ WSAACHAR(plinep,workbuf,DW_LNS_extended_op);
+ WSAACHAR(plinep,workbuf,5); /* operand length */
+ WSAACHAR(plinep,workbuf,DW_LNE_set_address);
+ WSAALONG(plinep,workbuf,0); /* Start Address */
+ /* if first entry */
+ if (!dwarf_fsect)
+ {
+ dwarf_fsect = dwarf_esect = dwarf_csect;
+ dwarf_csect->last = 0;
+ }
+ /* chain to previous entry */
+ else
+ {
+ dwarf_esect->next = dwarf_csect;
+ dwarf_esect = dwarf_csect;
+ }
+ }
+}
#endif /* OF_ELF */
projects / platform / upstream / nasm.git / commitdiff