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Fix a whole pile of issues related to the failed attempt to increase

Browse source 
the number of types of relocation possible in the object file. (Now,
hopefully, working.)

Also change the object serialiser/deserialiser to never try to read or
write raw structures; it's way safer this way and we don't need the
performance boost any more.

--HG--
branch : default-branch
This commit is contained in:
David Given 2016-03-18 21:46:55 +01:00
parent fd7e9f9046
commit ef8e6e25e0
9 changed files with 27 additions and 123 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
h/out.h
View file

@ -43,7 +43,6 @@ struct outrelo {
uint16_t or_type; /* type of reference */
uint16_t or_sect; /* referencing section */
uint16_t or_nami; /* referenced symbol index */
uint16_t _padding; /* padding for alignment */
uint32_t or_addr; /* referencing address */
};
@ -102,18 +101,6 @@ struct outname {
reserved for debuggers
*/
/*
* structure format strings
*/
#if 0
/* The following strings only make sense on 32-bit platforms, so we're going
* to try and deprecate them. */
#define SF_HEAD "22222244"
#define SF_SECT "44444"
#define SF_RELO "1124"
#define SF_NAME "4224"
#endif
/*
* structure sizes on disk (bytes in file; add digits in SF_*)
* Note! These are NOT the sizes in memory (64-bit architectures will have
@ -121,7 +108,7 @@ struct outname {
*/
#define SZ_HEAD 20
#define SZ_SECT 20
#define SZ_RELO 8
#define SZ_RELO 10
#define SZ_NAME 12
/*

4
mach/proto/as/comm6.c
View file

@ -281,8 +281,8 @@ newrelo(s, n)
return;
}
s &= ~S_VAR;
outrelo.or_type = (char)n;
outrelo.or_sect = (char)DOTTYP;
outrelo.or_type = n;
outrelo.or_sect = DOTTYP;
#ifndef ASLD
if (s == S_UND || iscomm) {
assert(relonami != 0);

36
modules/src/object/obj.h
View file

@ -15,38 +15,16 @@
#define CHAR_UNSIGNED 0
#endif
#if CHAR_UNSIGNED
#define Xchar(ch) (ch)
#else
#define Xchar(ch) ((ch) & 0377)
#endif
#define Xchar(ch) (uint32_t)(uint8_t)(ch)
#if ! defined(BYTE_ORDER)
#define BYTE_ORDER 0x3210
#endif
#if (BYTE_ORDER == 0x3210 || BYTE_ORDER == 0x1032)
#define uget2(c) (Xchar((c)[0]) | ((unsigned) Xchar((c)[1]) << 8))
#define Xput2(i, c) (((c)[0] = (i)), ((c)[1] = (i) >> 8))
#define put2(i, c) { register int j = (i); Xput2(j, c); }
#else
#define uget2(c) (* ((unsigned short *) (c)))
#define Xput2(i, c) (* ((short *) (c)) = (i))
#define put2(i, c) Xput2(i, c)
#endif
#define uget2(c) (Xchar((c)[0]) | (Xchar((c)[1])<<8))
#define get2(c) ((int16_t) uget2(c))
#define put2(i, c) (((c)[0] = i), ((c)[1] = i>>8))
#define get2(c) ((short) uget2(c))
#if BYTE_ORDER != 0x0123
#define get4(c) (uget2(c) | ((long) uget2((c)+2) << 16))
#define put4(l, c) { register long x=(l); \
Xput2((int)x,c); \
Xput2((int)(x>>16),(c)+2); \
}
#else
#define get4(c) (* ((long *) (c)))
#define put4(l, c) (* ((long *) (c)) = (l))
#endif
#define uget4(c) (uget2(c) | (uget2((c)+2)<<16))
#define get4(c) ((int32_t) uget4(c))
#define put4(i, c) (put2(i, c), put2((i)>>16, (c)+2))
#define SECTCNT 3 /* number of sections with own output buffer */
#if BIGMACHINE

20
modules/src/object/rd.c
View file

@ -109,9 +109,6 @@ rd_ohead(head)
register long off;
OUTREAD(PARTEMIT, (char *) head, (long) SZ_HEAD);
#if BYTE_ORDER == 0x0123
if (sizeof(struct outhead) != SZ_HEAD)
#endif
{
register char *c = (char *) head + (SZ_HEAD-4);
@ -157,16 +154,13 @@ rd_sect(sect, cnt)
offcnt += cnt;
while (cnt--) {
sect--;
#if BYTE_ORDER == 0x0123
if (sizeof(struct outsect) != SZ_SECT)
#endif
{
c -= 4; sect->os_lign = get4(c);
c -= 4; sect->os_flen = get4(c);
c -= 4; sect->os_foff = get4(c);
c -= 4; sect->os_size = get4(c);
c -= 4; sect->os_base = get4(c);
}
offset[--offcnt] = sect->os_foff + rd_base;
}
}
@ -197,9 +191,6 @@ rd_relo(relo, cnt)
{
OUTREAD(PARTRELO, (char *) relo, (long) cnt * SZ_RELO);
#if BYTE_ORDER == 0x0123
if (sizeof(struct outrelo) != SZ_RELO)
#endif
{
register char *c = (char *) relo + (long) cnt * SZ_RELO;
@ -208,8 +199,8 @@ rd_relo(relo, cnt)
relo--;
c -= 4; relo->or_addr = get4(c);
c -= 2; relo->or_nami = uget2(c);
relo->or_sect = *--c;
relo->or_type = *--c;
c -= 2; relo->or_sect = uget2(c);
c -= 2; relo->or_type = uget2(c);
}
}
}
@ -221,9 +212,6 @@ rd_name(name, cnt)
{
OUTREAD(PARTNAME, (char *) name, (long) cnt * SZ_NAME);
#if BYTE_ORDER == 0x0123
if (sizeof(struct outname) != SZ_NAME)
#endif
{
register char *c = (char *) name + (long) cnt * SZ_NAME;

3
modules/src/object/rd_ranlib.c
View file

@ -11,9 +11,6 @@ rd_ranlib(fd, ran, cnt)
register long cnt;
{
rd_bytes(fd, (char *) ran, cnt * SZ_RAN);
#if BYTE_ORDER == 0x0123
if (sizeof (struct ranlib) != SZ_RAN)
#endif
{
register char *c = (char *) ran + cnt * SZ_RAN;

32
modules/src/object/wr.c
View file

@ -198,7 +198,7 @@ wr_ohead(head)
BEGINSEEK(PARTDBUG, off);
#endif
}
if (BYTE_ORDER != 0x0123 || sizeof(struct outhead) != SZ_HEAD)
{
char buf[SZ_HEAD];
@ -214,7 +214,6 @@ wr_ohead(head)
put4(head->oh_nchar, c);
OUTWRITE(PARTEMIT, buf, (long)SZ_HEAD);
}
else OUTWRITE(PARTEMIT, (char *)head, (long)SZ_HEAD);
}
void
@ -233,9 +232,6 @@ wr_sect(sect, cnt)
}
sect -= cnt;
}
#if BYTE_ORDER == 0x0123
if (sizeof(struct outsect) != SZ_SECT)
#endif
while (cnt)
{
register char *c;
@ -259,11 +255,6 @@ wr_sect(sect, cnt)
__wr_flush(&__parts[PARTEMIT]);
}
}
#if BYTE_ORDER == 0x0123
else {
OUTWRITE(PARTEMIT, (char *) sect, (long) cnt * SZ_SECT);
}
#endif
}
void
@ -313,9 +304,6 @@ wr_relo(relo, cnt)
unsigned int cnt;
{
#if BYTE_ORDER == 0x0123
if (sizeof(struct outrelo) != SZ_RELO)
#endif
while (cnt)
{
register char *c;
@ -327,8 +315,8 @@ wr_relo(relo, cnt)
cnt -= i;
__parts[PARTRELO].cnt -= (i*SZ_RELO);
while (i--) {
*c++ = relo->or_type;
*c++ = relo->or_sect;
put2(relo->or_type, c); c += 2;
put2(relo->or_sect, c); c += 2;
put2(relo->or_nami, c); c += 2;
put4(relo->or_addr, c); c += 4;
relo++;
@ -338,11 +326,6 @@ wr_relo(relo, cnt)
__wr_flush(&__parts[PARTRELO]);
}
}
#if BYTE_ORDER == 0x0123
else {
OUTWRITE(PARTRELO, (char *) relo, (long) cnt * SZ_RELO);
}
#endif
}
void
@ -350,9 +333,6 @@ wr_name(name, cnt)
register struct outname *name;
unsigned int cnt;
{
#if BYTE_ORDER == 0x0123
if (sizeof(struct outname) != SZ_NAME)
#endif
while (cnt)
{
register char *c;
@ -373,12 +353,6 @@ wr_name(name, cnt)
__parts[PARTNAME].pnow = c;
if (cnt) __wr_flush(&__parts[PARTNAME]);
}
#if BYTE_ORDER == 0x0123
else {
OUTWRITE(PARTNAME, (char *) name, (long)cnt * SZ_NAME);
}
#endif
}
void

3
modules/src/object/wr_ranlib.c
View file

@ -10,9 +10,6 @@ wr_ranlib(fd, ran, cnt1)
struct ranlib *ran;
long cnt1;
{
#if BYTE_ORDER == 0x0123
if (sizeof (struct ranlib) != SZ_RAN)
#endif
{
register long cnt = cnt1;
register struct ranlib *r = ran;

12
util/led/ack.out.5
View file

@ -150,7 +150,6 @@ struct outrelo {
uint16_t or_type; /* type of reference */
uint16_t or_sect; /* referencing section */
uint16_t or_nami; /* referenced symbol index */
uint16_t _padding; /* padding for alignment; ignore */
uint32_t or_addr; /* referencing address */
};
.fi
@ -285,15 +284,6 @@ object file.
.br
The following miscellaneous defines might come in handy when reading
object files:
.PP
.nf
/*
* structure format strings
*/
#define SF_HEAD "22222244"
#define SF_SECT "44444"
#define SF_RELO "1124"
#define SF_NAME "4224"
.fi
.PP
.nf
@ -302,7 +292,7 @@ object files:
*/
#define SZ_HEAD 20
#define SZ_SECT 20
#define SZ_RELO 8
#define SZ_RELO 10
#define SZ_NAME 12
.fi
.PP

15
util/led/relocate.c
View file

@ -108,10 +108,7 @@ static long get_vc4_valu(char* addr)
* The bits in type indicate how many bytes the value occupies and what
* significance should be attributed to each byte.
*/
static long
getvalu(addr, type)
char addr[];
char type;
static long getvalu(char* addr, uint16_t type)
{
switch (type & RELSZ) {
case RELO1:
@ -127,7 +124,7 @@ getvalu(addr, type)
case RELOVC4:
return get_vc4_valu(addr);
default:
fatal("bad relocation size");
fatal("bad relocation type %x", type & RELSZ);
}
/* NOTREACHED */
}
@ -228,11 +225,7 @@ static void put_vc4_valu(char* addr, long value)
* significance should be attributed to each byte.
* We do not check for overflow.
*/
static
putvalu(valu, addr, type)
long valu;
char addr[];
char type;
static putvalu(long valu, char* addr, uint16_t type)
{
switch (type & RELSZ) {
@ -259,7 +252,7 @@ putvalu(valu, addr, type)
put_vc4_valu(addr, valu);
break;
default:
fatal("bad relocation size");
fatal("bad relocation type %x", type & RELSZ);
}
}