mirror/nasm
2
0
Fork 0
mirror of https://github.com/netwide-assembler/nasm.git synced 2025-04-12 18:40:23 +08:00
Code Issues Packages Projects Releases Wiki Activity

Address data is int64_t; simplify writing an address object

Browse Source 
Address data is always int64_t even if the size itself is smaller;
this was broken on bigendian hosts (still need testing!)

Create simple "write sized object" macros.
This commit is contained in:
H. Peter Anvin 2007-11-13 09:37:59 -08:00
parent a5fb90834a
commit d1fb15c154
20 changed files with 81 additions and 96 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
assemble.c
View File

@ -181,18 +181,13 @@ static void out(int64_t offset, int32_t segto, const void *data,
* convert it into RAWDATA format.
*/
uint8_t *q = p;
switch (size) {
case 2:
WRITESHORT(q, *(int32_t *)data);
break;
case 4:
WRITELONG(q, *(int32_t *)data);
break;
case 8:
WRITEDLONG(q, *(int64_t *)data);
break;
if (size > 8) {
errfunc(ERR_PANIC, "OUT_ADDRESS with size > 8");
return;
}
WRITEADDR(q, *(int64_t *)data, size);
data = p;
type = OUT_RAWDATA;
}

11
compiler.h
View File

@ -96,4 +96,15 @@ int strnicmp(const char *, const char *, size_t);
char *strsep(char **, const char *);
#endif
/*
* Define this to 1 for faster performance if this is a littleendian
* platform which can do unaligned memory references. It is safe
* to leave it defined to 0 even if that is true.
*/
#if defined(__i386__) || defined(__x86_64__)
# define X86_MEMORY 1
#else
# define X86_MEMORY 0
#endif
#endif /* NASM_COMPILER_H */

2
disasm.c
View File

@ -53,7 +53,7 @@ struct prefix_info {
};
#define getu8(x) (*(uint8_t *)(x))
#if defined(__i386__) || defined(__x86_64__)
#if X86_MEMORY
/* Littleendian CPU which can handle unaligned references */
#define getu16(x) (*(uint16_t *)(x))
#define getu32(x) (*(uint32_t *)(x))

2
float.c
View File

@ -45,7 +45,7 @@ typedef uint64_t fp_2limb;
#define LIMB_ALL_BYTES ((fp_limb)0x01010101)
#define LIMB_BYTE(x) ((x)*LIMB_ALL_BYTES)
#if defined(__i386__) || defined(__x86_64__)
#if X86_MEMORY
#define put(a,b) (*(uint32_t *)(a) = (b))
#else
#define put(a,b) (((a)[0] = (b)), \

2
listing.c
View File

@ -75,7 +75,7 @@ static void list_emit(void)
if (listlinep)
fprintf(listfp, " %s", listline);
fputc('\n', listfp);
putc('\n', listfp);
listlinep = false;
listdata[0] = '\0';
}

4
nasm.c
View File

@ -155,7 +155,7 @@ static void nasm_fputs(const char *line, FILE * outfile)
{
if (outfile) {
fputs(line, outfile);
fputc('\n', outfile);
putc('\n', outfile);
} else
puts(line);
}
@ -1608,7 +1608,7 @@ static void report_error_common(int severity, const char *fmt,
}
vfprintf(error_file, fmt, args);
fputc('\n', error_file);
putc('\n', error_file);
if (severity & ERR_USAGE)
want_usage = true;

30
nasmlib.c
View File

@ -363,28 +363,30 @@ int32_t seg_alloc(void)
void fwriteint16_t(int data, FILE * fp)
{
fputc((int)(data & 255), fp);
fputc((int)((data >> 8) & 255), fp);
char buffer[2], *p = buffer;
WRITESHORT(p, data);
fwrite(buffer, 1, 2, fp);
}
void fwriteint32_t(int32_t data, FILE * fp)
{
fputc((int)(data & 255), fp);
fputc((int)((data >> 8) & 255), fp);
fputc((int)((data >> 16) & 255), fp);
fputc((int)((data >> 24) & 255), fp);
char buffer[4], *p = buffer;
WRITELONG(p, data);
fwrite(buffer, 1, 4, fp);
}
void fwriteint64_t(int64_t data, FILE * fp)
{
fputc((int)(data & 255), fp);
fputc((int)((data >> 8) & 255), fp);
fputc((int)((data >> 16) & 255), fp);
fputc((int)((data >> 24) & 255), fp);
fputc((int)((data >> 32) & 255), fp);
fputc((int)((data >> 40) & 255), fp);
fputc((int)((data >> 48) & 255), fp);
fputc((int)((data >> 56) & 255), fp);
char buffer[8], *p = buffer;
WRITEDLONG(p, data);
fwrite(buffer, 1, 8, fp);
}
void fwriteaddr(int64_t data, int size, FILE * fp)
{
char buffer[8], *p = buffer;
WRITEADDR(p, data, size);
fwrite(buffer, 1, size, fp);
}
void standard_extension(char *inname, char *outname, char *extension,

12
nasmlib.h
View File

@ -209,12 +209,24 @@ void standard_extension(char *inname, char *outname, char *extension,
WRITECHAR(p,(v) >> 56); \
} while (0)
#define WRITEADDR(p,v,s) \
do { \
int _s = (s); \
uint64_t _v = (v); \
while (_s--) { \
WRITECHAR(p,_v); \
_v >>= 8; \
} \
} while(0)
/*
* and routines to do the same thing to a file
*/
#define fwriteint8_t(d,f) putc(d,f)
void fwriteint16_t(int data, FILE * fp);
void fwriteint32_t(int32_t data, FILE * fp);
void fwriteint64_t(int64_t data, FILE * fp);
void fwriteaddr(int64_t data, int size, FILE * fp);
/*
* Routines to manage a dynamic random access array of int32_ts which

6
output/outaout.c
View File

@ -622,7 +622,7 @@ static void aout_out(int32_t segto, const void *data,
error(ERR_PANIC, "OUT_RAWDATA with other than NO_SEG");
aout_sect_write(s, data, size);
} else if (type == OUT_ADDRESS) {
addr = *(int32_t *)data;
addr = *(int64_t *)data;
if (segment != NO_SEG) {
if (segment % 2) {
error(ERR_NONFATAL, "a.out format does not support"
@ -699,7 +699,7 @@ static void aout_out(int32_t segto, const void *data,
}
}
p = mydata;
WRITESHORT(p, *(int32_t *)data - (size + s->len));
WRITESHORT(p, *(int64_t *)data - (size + s->len));
aout_sect_write(s, mydata, 2L);
} else if (type == OUT_REL4ADR) {
if (segment == segto)
@ -729,7 +729,7 @@ static void aout_out(int32_t segto, const void *data,
}
}
p = mydata;
WRITELONG(p, *(int32_t *)data - (size + s->len));
WRITELONG(p, *(int64_t *)data - (size + s->len));
aout_sect_write(s, mydata, 4L);
}
}

8
output/outas86.c
View File

@ -320,12 +320,12 @@ static void as86_out(int32_t segto, const void *data,
error(ERR_NONFATAL, "as86 format does not support"
" segment base references");
} else {
offset = *(int32_t *)data;
offset = *(int64_t *)data;
as86_add_piece(s, 1, offset, segment, size, 0);
}
} else {
p = mydata;
WRITELONG(p, *(int32_t *)data);
WRITELONG(p, *(int64_t *)data);
as86_sect_write(s, data, size);
as86_add_piece(s, 0, 0L, 0L, size, 0);
}
@ -337,7 +337,7 @@ static void as86_out(int32_t segto, const void *data,
error(ERR_NONFATAL, "as86 format does not support"
" segment base references");
} else {
offset = *(int32_t *)data;
offset = *(int64_t *)data;
as86_add_piece(s, 1, offset - size + 2, segment, 2L,
1);
}
@ -350,7 +350,7 @@ static void as86_out(int32_t segto, const void *data,
error(ERR_NONFATAL, "as86 format does not support"
" segment base references");
} else {
offset = *(int32_t *)data;
offset = *(int64_t *)data;
as86_add_piece(s, 1, offset - size + 4, segment, 4L,
1);
}

13
output/outbin.c
View File

@ -788,12 +788,7 @@ static void bin_out(int32_t segto, const void *data,
if (segment != NO_SEG)
add_reloc(s, size, segment, -1L);
p = mydata;
if (size == 4)
WRITELONG(p, *(int32_t *)data);
else if (size == 8)
WRITEDLONG(p, *(int64_t *)data);
else
WRITESHORT(p, *(int32_t *)data);
WRITEADDR(p, *(int64_t *)data, size);
saa_wbytes(s->contents, mydata, size);
}
s->length += size;
@ -836,11 +831,7 @@ static void bin_out(int32_t segto, const void *data,
if (s->flags & TYPE_PROGBITS) {
add_reloc(s, size, segment, segto);
p = mydata;
/* XXX: WHAT ABOUT SIZE == 8? */
if (size == 4)
WRITELONG(p, *(int32_t *)data - size - s->length);
else
WRITESHORT(p, *(int32_t *)data - size - s->length);
WRITEADDR(p, *(int64_t *)data - size - s->length, size);
saa_wbytes(s->contents, mydata, size);
}
s->length += size;

8
output/outcoff.c
View File

@ -533,7 +533,7 @@ static void coff_out(int32_t segto, const void *data,
fix = coff_add_reloc(s, segment, false, false);
}
p = mydata;
WRITELONG(p, *(int32_t *)data + fix);
WRITELONG(p, *(int64_t *)data + fix);
coff_sect_write(s, mydata, size);
}
} else {
@ -555,7 +555,7 @@ static void coff_out(int32_t segto, const void *data,
coff_sect_write(s, mydata, size);
} else {
fix = coff_add_reloc(s, segment, false, false);
WRITELONG(p, *(int32_t *)data + fix);
WRITELONG(p, *(int64_t *)data + fix);
coff_sect_write(s, mydata, size);
}
}
@ -577,9 +577,9 @@ static void coff_out(int32_t segto, const void *data,
fix = coff_add_reloc(s, segment, true, false);
p = mydata;
if (win32 | win64) {
WRITELONG(p, *(int32_t *)data + 4 - size + fix);
WRITELONG(p, *(int64_t *)data + 4 - size + fix);
} else {
WRITELONG(p, *(int32_t *)data - (size + s->len) + fix);
WRITELONG(p, *(int64_t *)data - (size + s->len) + fix);
}
coff_sect_write(s, mydata, 4L);
}

8
output/outdbg.c
View File

@ -125,13 +125,7 @@ static void dbg_out(int32_t segto, const void *data,
fprintf(dbgf, "\n");
break;
case OUT_ADDRESS:
ldata = 0; /* placate gcc */
if (size == 1)
ldata = *((char *)data);
else if (size == 2)
ldata = *((int16_t *)data);
else if (size == 4)
ldata = *((int32_t *)data);
ldata = *(int64_t *)data;
fprintf(dbgf, "addr %08lx (seg %08lx, wrt %08lx)\n", ldata,
segment, wrt);
break;

6
output/outelf32.c
View File

@ -841,7 +841,7 @@ static void elf_out(int32_t segto, const void *data,
elf_sect_write(s, data, size);
} else if (type == OUT_ADDRESS) {
bool gnu16 = false;
addr = *(int32_t *)data;
addr = *(int64_t *)data;
if (segment != NO_SEG) {
if (segment % 2) {
error(ERR_NONFATAL, "ELF format does not support"
@ -916,7 +916,7 @@ static void elf_out(int32_t segto, const void *data,
}
}
p = mydata;
WRITESHORT(p, *(int32_t *)data - size);
WRITESHORT(p, *(int64_t *)data - size);
elf_sect_write(s, mydata, 2L);
} else if (type == OUT_REL4ADR) {
if (segment == segto)
@ -941,7 +941,7 @@ static void elf_out(int32_t segto, const void *data,
}
}
p = mydata;
WRITELONG(p, *(int32_t *)data - size);
WRITELONG(p, *(int64_t *)data - size);
elf_sect_write(s, mydata, 4L);
}
}

8
output/outelf64.c
View File

@ -798,8 +798,8 @@ static void elf_out(int32_t segto, const void *data,
#if defined(DEBUG) && DEBUG>2
fprintf(stderr,
" elf_out type: %x seg: %d bytes: %x data: %x\n",
(type >> 24), segment, size, *(int32_t *)data);
" elf_out type: %x seg: %d bytes: %x data: %"PRIx64"\n",
(type >> 24), segment, size, *(int64_t *)data);
#endif
/*
@ -951,7 +951,7 @@ static void elf_out(int32_t segto, const void *data,
}
}
p = mydata;
WRITESHORT(p, *(int32_t *)data - size);
WRITESHORT(p, *(int64_t *)data - size);
elf_sect_write(s, mydata, 2L);
} else if (type == OUT_REL4ADR) {
if (segment == segto)
@ -976,7 +976,7 @@ static void elf_out(int32_t segto, const void *data,
}
}
p = mydata;
WRITELONG(p, *(int32_t *)data - size);
WRITELONG(p, *(int64_t *)data - size);
elf_sect_write(s, mydata, 4L);
}
}

2
output/outieee.c
View File

@ -418,7 +418,7 @@ static void ieee_out(int32_t segto, const void *data,
if (segment == NO_SEG && type != OUT_ADDRESS)
error(ERR_NONFATAL, "relative call to absolute address not"
" supported by IEEE format");
ldata = *(int32_t *)data;
ldata = *(int64_t *)data;
if (type == OUT_REL2ADR)
ldata += (size - 2);
if (type == OUT_REL4ADR)

9
output/outmacho.c
View File

@ -464,7 +464,7 @@ static void macho_output(int32_t secto, const void *data,
break;
case OUT_ADDRESS:
addr = *(int32_t *)data;
addr = *(int64_t *)data;
if (section != NO_SEG) {
if (section % 2) {
@ -475,12 +475,7 @@ static void macho_output(int32_t secto, const void *data,
}
p = mydata;
if (size == 2)
WRITESHORT(p, addr);
else
WRITELONG(p, addr);
WRITEADDR(p, addr, size);
sect_write(s, mydata, size);
break;

2
output/outobj.c
View File

@ -1061,7 +1061,7 @@ static void obj_out(int32_t segto, const void *data,
if (segment >= SEG_ABS)
error(ERR_NONFATAL, "far-absolute relocations not supported"
" by OBJ format");
ldata = *(int32_t *)data;
ldata = *(int64_t *)data;
if (type == OUT_REL2ADR) {
ldata += (size - 2);
size = 2;

14
output/outrdf.c
View File

@ -392,16 +392,8 @@ static void rdf_out(int32_t segto, void *data, uint32_t type,
}
pd = databuf; /* convert address to little-endian */
if (bytes == 4)
WRITELONG(pd, *(int32_t *)data);
else if (bytes == 8)
WRITEDLONG(pd, *(int64_t *)data);
else
WRITESHORT(pd, *(int32_t *)data);
WRITEADDR(pd, *(int64_t *)data, bytes);
membufwrite(seg[segto], databuf, bytes);
} else if (type == OUT_REL2ADR) {
if (segment == segto)
error(ERR_PANIC, "intra-segment OUT_REL2ADR");
@ -422,7 +414,7 @@ static void rdf_out(int32_t segto, void *data, uint32_t type,
* address of imported symbol onto it to get address relative to end of
* instruction: import_address + data(offset) - end_of_instrn */
rr.offset = *(int32_t *)data - (rr.offset + bytes);
rr.offset = *(int64_t *)data - (rr.offset + bytes);
membufwrite(seg[segto], &rr.offset, -2);
} else if (type == OUT_REL4ADR) {
@ -440,7 +432,7 @@ static void rdf_out(int32_t segto, void *data, uint32_t type,
rr.refseg = segment; /* segment referred to */
write_reloc_rec(&rr);
rr.offset = *(int32_t *)data - (rr.offset + bytes);
rr.offset = *(int64_t *)data - (rr.offset + bytes);
membufwrite(seg[segto], &rr.offset, -4);
}
}

13
output/outrdf2.c
View File

@ -583,15 +583,8 @@ static void rdf2_out(int32_t segto, const void *data,
}
pd = databuf; /* convert address to little-endian */
if (size == 4)
WRITESHORT(pd, *(int32_t *)data);
else if (size == 8)
WRITEDLONG(pd, *(int64_t *)data);
else
WRITESHORT(pd, *(int32_t *)data);
WRITEADDR(pd, *(int64_t *)data, size);
membufwrite(segto, databuf, size);
} else if (type == OUT_REL2ADR) {
if (segment == segto)
error(ERR_PANIC, "intra-segment OUT_REL2ADR");
@ -609,7 +602,7 @@ static void rdf2_out(int32_t segto, const void *data,
/* what do we put in the code? Simply the data. This should almost
* always be zero, unless someone's doing segment arithmetic...
*/
rr.offset = *(int32_t *)data;
rr.offset = *(int64_t *)data;
} else {
rr.type = RDFREC_RELOC; /* type signature */
rr.segment = segto + 64; /* segment we're currently in + rel flag */
@ -639,7 +632,7 @@ static void rdf2_out(int32_t segto, const void *data,
rr.reclen = 8;
write_reloc_rec(&rr);
rr.offset = *(int32_t *)data - (rr.offset + size);
rr.offset = *(int64_t *)data - (rr.offset + size);
membufwrite(segto, &rr.offset, -4);
}