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authorH. Peter Anvin <hpa@zytor.com>2002-04-30 20:52:26 +0000
committerH. Peter Anvin <hpa@zytor.com>2002-04-30 20:52:26 +0000
commit6768eb71d8debde65562619c938b997aea1bd9f9 (patch)
tree93fc4f4a6d66891ace9494b737aa4b2c1bed37ef /assemble.c
parentd7ed89eac9580f280fe0017b22c8e38ca75ed8e3 (diff)
downloadnasm-6768eb71d8debde65562619c938b997aea1bd9f9.tar.gz
nasm-6768eb71d8debde65562619c938b997aea1bd9f9.tar.xz
nasm-6768eb71d8debde65562619c938b997aea1bd9f9.zip
NASM 0.95nasm-0.95
Diffstat (limited to 'assemble.c')
-rw-r--r--assemble.c202
1 files changed, 146 insertions, 56 deletions
diff --git a/assemble.c b/assemble.c
index 3e4bc1f1..c6cc00a3 100644
--- a/assemble.c
+++ b/assemble.c
@@ -53,6 +53,7 @@
#include <string.h>
#include "nasm.h"
+#include "nasmlib.h"
#include "assemble.h"
#include "insns.h"
@@ -67,6 +68,7 @@ typedef struct {
static efunc errfunc;
static struct ofmt *outfmt;
+static ListGen *list;
static long calcsize (long, long, int, insn *, char *);
static void gencode (long, long, int, insn *, char *, long);
@@ -75,8 +77,49 @@ static int matches (struct itemplate *, insn *);
static ea *process_ea (operand *, ea *, int, int, int);
static int chsize (operand *, int);
+/*
+ * This routine wrappers the real output format's output routine,
+ * in order to pass a copy of the data off to the listing file
+ * generator at the same time.
+ */
+static void out (long offset, long segto, void *data, unsigned long type,
+ long segment, long wrt) {
+ if ((type & OUT_TYPMASK) == OUT_ADDRESS) {
+ if (segment != NO_SEG || wrt != NO_SEG) {
+ /*
+ * This address is relocated. We must write it as
+ * OUT_ADDRESS, so there's no work to be done here.
+ */
+ list->output (offset, data, type);
+ } else {
+ unsigned char p[4], *q = p;
+ /*
+ * This is a non-relocated address, and we're going to
+ * convert it into RAWDATA format.
+ */
+ if ((type & OUT_SIZMASK) == 4) {
+ WRITELONG (q, * (long *) data);
+ list->output (offset, p, OUT_RAWDATA+4);
+ } else {
+ WRITESHORT (q, * (long *) data);
+ list->output (offset, p, OUT_RAWDATA+2);
+ }
+ }
+ } else if ((type & OUT_TYPMASK) == OUT_RAWDATA) {
+ list->output (offset, data, type);
+ } else if ((type & OUT_TYPMASK) == OUT_RESERVE) {
+ list->output (offset, NULL, type);
+ } else if ((type & OUT_TYPMASK) == OUT_REL2ADR ||
+ (type & OUT_TYPMASK) == OUT_REL4ADR) {
+ list->output (offset, data, type);
+ }
+
+ outfmt->output (segto, data, type, segment, wrt);
+}
+
long assemble (long segment, long offset, int bits,
- insn *instruction, struct ofmt *output, efunc error) {
+ insn *instruction, struct ofmt *output, efunc error,
+ ListGen *listgen) {
int j, size_prob;
long insn_end, itimes;
long start = offset;
@@ -84,6 +127,7 @@ long assemble (long segment, long offset, int bits,
errfunc = error; /* to pass to other functions */
outfmt = output; /* likewise */
+ list = listgen; /* and again */
if (instruction->opcode == -1)
return 0;
@@ -114,16 +158,16 @@ long assemble (long segment, long offset, int bits,
"one-byte relocation attempted");
else {
unsigned char c = e->offset;
- outfmt->output (segment, &c, OUT_RAWDATA+1,
- NO_SEG, NO_SEG);
+ out (offset, segment, &c, OUT_RAWDATA+1,
+ NO_SEG, NO_SEG);
}
} else if (wsize > 5) {
errfunc (ERR_NONFATAL, "integer supplied to a D%c"
" instruction", wsize==8 ? 'Q' : 'T');
} else
- outfmt->output (segment, &e->offset,
- OUT_ADDRESS+wsize, e->segment,
- e->wrt);
+ out (offset, segment, &e->offset,
+ OUT_ADDRESS+wsize, e->segment,
+ e->wrt);
offset += wsize;
} else if (e->type == EOT_DB_STRING) {
int align;
@@ -131,15 +175,25 @@ long assemble (long segment, long offset, int bits,
align = (-e->stringlen) % wsize;
if (align < 0)
align += wsize;
- outfmt->output (segment, e->stringval,
- OUT_RAWDATA+e->stringlen, NO_SEG, NO_SEG);
+ out (offset, segment, e->stringval,
+ OUT_RAWDATA+e->stringlen, NO_SEG, NO_SEG);
if (align)
- outfmt->output (segment, "\0\0\0\0",
- OUT_RAWDATA+align, NO_SEG, NO_SEG);
+ out (offset, segment, "\0\0\0\0",
+ OUT_RAWDATA+align, NO_SEG, NO_SEG);
offset += e->stringlen + align;
}
}
+ if (t > 0 && t == instruction->times-1) {
+ /*
+ * Dummy call to list->output to give the offset to the
+ * listing module.
+ */
+ list->output (offset, NULL, OUT_RAWDATA);
+ list->uplevel (LIST_TIMES);
+ }
}
+ if (instruction->times > 1)
+ list->downlevel (LIST_TIMES);
return offset - start;
}
@@ -170,6 +224,12 @@ long assemble (long segment, long offset, int bits,
len > instruction->eops->next->next->offset)
len = instruction->eops->next->next->offset;
}
+ /*
+ * Dummy call to list->output to give the offset to the
+ * listing module.
+ */
+ list->output (offset, NULL, OUT_RAWDATA);
+ list->uplevel(LIST_INCBIN);
while (t--) {
fseek (fp,
(instruction->eops->next ?
@@ -189,11 +249,21 @@ long assemble (long segment, long offset, int bits,
" reading file `%s'", fname);
return 0; /* it doesn't much matter... */
}
- outfmt->output (segment, buf, OUT_RAWDATA+m,
- NO_SEG, NO_SEG);
+ out (offset, segment, buf, OUT_RAWDATA+m,
+ NO_SEG, NO_SEG);
l -= m;
}
}
+ list->downlevel(LIST_INCBIN);
+ if (instruction->times > 1) {
+ /*
+ * Dummy call to list->output to give the offset to the
+ * listing module.
+ */
+ list->output (offset, NULL, OUT_RAWDATA);
+ list->uplevel(LIST_TIMES);
+ list->downlevel(LIST_TIMES);
+ }
fclose (fp);
return instruction->times * len;
}
@@ -257,13 +327,23 @@ long assemble (long segment, long offset, int bits,
"invalid instruction prefix");
}
if (c != 0)
- outfmt->output (segment, &c, OUT_RAWDATA+1,
- NO_SEG, NO_SEG);
+ out (offset, segment, &c, OUT_RAWDATA+1,
+ NO_SEG, NO_SEG);
offset++;
}
gencode (segment, offset, bits, instruction, codes, insn_end);
offset += insn_size;
+ if (itimes > 0 && itimes == instruction->times-1) {
+ /*
+ * Dummy call to list->output to give the offset to the
+ * listing module.
+ */
+ list->output (offset, NULL, OUT_RAWDATA);
+ list->uplevel (LIST_TIMES);
+ }
}
+ if (instruction->times > 1)
+ list->downlevel (LIST_TIMES);
return offset - start;
} else if (m > 0) {
size_prob = m;
@@ -473,7 +553,7 @@ static void gencode (long segment, long offset, int bits,
while (*codes) switch (c = *codes++) {
case 01: case 02: case 03:
- outfmt->output (segment, codes, OUT_RAWDATA+c, NO_SEG, NO_SEG);
+ out (offset, segment, codes, OUT_RAWDATA+c, NO_SEG, NO_SEG);
codes += c;
offset += c;
break;
@@ -486,7 +566,7 @@ static void gencode (long segment, long offset, int bits,
default:
errfunc (ERR_PANIC, "bizarre 8086 segment register received");
}
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset++;
break;
case 05: case 07:
@@ -496,48 +576,48 @@ static void gencode (long segment, long offset, int bits,
default:
errfunc (ERR_PANIC, "bizarre 386 segment register received");
}
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset++;
break;
case 010: case 011: case 012:
bytes[0] = *codes++ + regval(&ins->oprs[c-010]);
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
break;
case 017:
bytes[0] = 0;
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
break;
case 014: case 015: case 016:
if (ins->oprs[c-014].offset < -128 || ins->oprs[c-014].offset > 127)
errfunc (ERR_WARNING, "signed byte value exceeds bounds");
bytes[0] = ins->oprs[c-014].offset;
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
break;
case 020: case 021: case 022:
- if (ins->oprs[c-020].offset < -128 || ins->oprs[c-020].offset > 255)
+ if (ins->oprs[c-020].offset < -256 || ins->oprs[c-020].offset > 255)
errfunc (ERR_WARNING, "byte value exceeds bounds");
bytes[0] = ins->oprs[c-020].offset;
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
break;
case 024: case 025: case 026:
if (ins->oprs[c-024].offset < 0 || ins->oprs[c-024].offset > 255)
errfunc (ERR_WARNING, "unsigned byte value exceeds bounds");
bytes[0] = ins->oprs[c-024].offset;
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
break;
case 030: case 031: case 032:
if (ins->oprs[c-030].segment == NO_SEG &&
ins->oprs[c-030].wrt == NO_SEG &&
- (ins->oprs[c-030].offset < -32768L ||
+ (ins->oprs[c-030].offset < -65536L ||
ins->oprs[c-030].offset > 65535L))
errfunc (ERR_WARNING, "word value exceeds bounds");
data = ins->oprs[c-030].offset;
- outfmt->output (segment, &data, OUT_ADDRESS+2,
+ out (offset, segment, &data, OUT_ADDRESS+2,
ins->oprs[c-030].segment, ins->oprs[c-030].wrt);
offset += 2;
break;
@@ -545,10 +625,10 @@ static void gencode (long segment, long offset, int bits,
data = ins->oprs[c-034].offset;
size = ((ins->oprs[c-034].addr_size ?
ins->oprs[c-034].addr_size : bits) == 16 ? 2 : 4);
- if (size==16 && (data < -32768L || data > 65535L))
+ if (size==16 && (data < -65536L || data > 65535L))
errfunc (ERR_WARNING, "word value exceeds bounds");
- outfmt->output (segment, &data, OUT_ADDRESS+size,
- ins->oprs[c-034].segment, ins->oprs[c-034].wrt);
+ out (offset, segment, &data, OUT_ADDRESS+size,
+ ins->oprs[c-034].segment, ins->oprs[c-034].wrt);
offset += size;
break;
case 037:
@@ -556,15 +636,15 @@ static void gencode (long segment, long offset, int bits,
errfunc (ERR_NONFATAL, "value referenced by FAR is not"
" relocatable");
data = 0L;
- outfmt->output (segment, &data, OUT_ADDRESS+2,
- outfmt->segbase(1+ins->oprs[0].segment),
+ out (offset, segment, &data, OUT_ADDRESS+2,
+ outfmt->segbase(1+ins->oprs[0].segment),
ins->oprs[0].wrt);
offset += 2;
break;
case 040: case 041: case 042:
data = ins->oprs[c-040].offset;
- outfmt->output (segment, &data, OUT_ADDRESS+4,
- ins->oprs[c-040].segment, ins->oprs[c-040].wrt);
+ out (offset, segment, &data, OUT_ADDRESS+4,
+ ins->oprs[c-040].segment, ins->oprs[c-040].wrt);
offset += 4;
break;
case 050: case 051: case 052:
@@ -574,17 +654,18 @@ static void gencode (long segment, long offset, int bits,
if (data > 127 || data < -128)
errfunc (ERR_NONFATAL, "short jump is out of range");
bytes[0] = data;
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
break;
case 060: case 061: case 062:
if (ins->oprs[c-060].segment != segment) {
data = ins->oprs[c-060].offset;
- outfmt->output (segment, &data, OUT_REL2ADR+insn_end-offset,
- ins->oprs[c-060].segment, ins->oprs[c-060].wrt);
+ out (offset, segment, &data, OUT_REL2ADR+insn_end-offset,
+ ins->oprs[c-060].segment, ins->oprs[c-060].wrt);
} else {
data = ins->oprs[c-060].offset - insn_end;
- outfmt->output (segment, &data, OUT_ADDRESS+2, NO_SEG, NO_SEG);
+ out (offset, segment, &data,
+ OUT_ADDRESS+2, NO_SEG, NO_SEG);
}
offset += 2;
break;
@@ -594,30 +675,33 @@ static void gencode (long segment, long offset, int bits,
if (ins->oprs[c-064].segment != segment) {
data = ins->oprs[c-064].offset;
size = (bits == 16 ? OUT_REL2ADR : OUT_REL4ADR);
- outfmt->output (segment, &data, size+insn_end-offset,
- ins->oprs[c-064].segment, ins->oprs[c-064].wrt);
+ out (offset, segment, &data, size+insn_end-offset,
+ ins->oprs[c-064].segment, ins->oprs[c-064].wrt);
size = (bits == 16 ? 2 : 4);
} else {
data = ins->oprs[c-064].offset - insn_end;
- outfmt->output (segment, &data, OUT_ADDRESS+size, NO_SEG, NO_SEG);
+ out (offset, segment, &data,
+ OUT_ADDRESS+size, NO_SEG, NO_SEG);
}
offset += size;
break;
case 070: case 071: case 072:
if (ins->oprs[c-070].segment != segment) {
data = ins->oprs[c-070].offset;
- outfmt->output (segment, &data, OUT_REL4ADR+insn_end-offset,
- ins->oprs[c-070].segment, ins->oprs[c-070].wrt);
+ out (offset, segment, &data, OUT_REL4ADR+insn_end-offset,
+ ins->oprs[c-070].segment, ins->oprs[c-070].wrt);
} else {
data = ins->oprs[c-070].offset - insn_end;
- outfmt->output (segment, &data, OUT_ADDRESS+4, NO_SEG, NO_SEG);
+ out (offset, segment, &data,
+ OUT_ADDRESS+4, NO_SEG, NO_SEG);
}
offset += 4;
break;
case 0300: case 0301: case 0302:
if (chsize (&ins->oprs[c-0300], bits)) {
*bytes = 0x67;
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes,
+ OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
} else
offset += 0;
@@ -625,7 +709,8 @@ static void gencode (long segment, long offset, int bits,
case 0310:
if (bits==32) {
*bytes = 0x67;
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes,
+ OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
} else
offset += 0;
@@ -633,7 +718,8 @@ static void gencode (long segment, long offset, int bits,
case 0311:
if (bits==16) {
*bytes = 0x67;
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes,
+ OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
} else
offset += 0;
@@ -643,7 +729,8 @@ static void gencode (long segment, long offset, int bits,
case 0320:
if (bits==32) {
*bytes = 0x66;
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes,
+ OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
} else
offset += 0;
@@ -651,7 +738,8 @@ static void gencode (long segment, long offset, int bits,
case 0321:
if (bits==16) {
*bytes = 0x66;
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes,
+ OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
} else
offset += 0;
@@ -660,7 +748,8 @@ static void gencode (long segment, long offset, int bits,
break;
case 0330:
*bytes = *codes++ + condval[ins->condition];
- outfmt->output (segment, bytes, OUT_RAWDATA+1, NO_SEG, NO_SEG);
+ out (offset, segment, bytes,
+ OUT_RAWDATA+1, NO_SEG, NO_SEG);
offset += 1;
break;
case 0340: case 0341: case 0342:
@@ -668,7 +757,8 @@ static void gencode (long segment, long offset, int bits,
errfunc (ERR_PANIC, "non-constant BSS size in pass two");
else {
long size = ins->oprs[0].offset << (c-0340);
- outfmt->output (segment, NULL, OUT_RESERVE+size, NO_SEG, NO_SEG);
+ out (offset, segment, NULL,
+ OUT_RESERVE+size, NO_SEG, NO_SEG);
offset += size;
}
break;
@@ -694,8 +784,8 @@ static void gencode (long segment, long offset, int bits,
/*
* the cast in the next line is to placate MS C...
*/
- outfmt->output (segment, bytes, OUT_RAWDATA+(long)(p-bytes),
- NO_SEG, NO_SEG);
+ out (offset, segment, bytes, OUT_RAWDATA+(long)(p-bytes),
+ NO_SEG, NO_SEG);
s = p-bytes;
switch (ea_data.bytes) {
@@ -703,16 +793,16 @@ static void gencode (long segment, long offset, int bits,
break;
case 1:
*bytes = ins->oprs[(c>>3)&7].offset;
- outfmt->output (segment, bytes, OUT_RAWDATA+1,
- NO_SEG, NO_SEG);
+ out (offset, segment, bytes, OUT_RAWDATA+1,
+ NO_SEG, NO_SEG);
s++;
break;
case 2:
case 4:
data = ins->oprs[(c>>3)&7].offset;
- outfmt->output (segment, &data, OUT_ADDRESS+ea_data.bytes,
- ins->oprs[(c>>3)&7].segment,
- ins->oprs[(c>>3)&7].wrt);
+ out (offset, segment, &data,
+ OUT_ADDRESS+ea_data.bytes,
+ ins->oprs[(c>>3)&7].segment, ins->oprs[(c>>3)&7].wrt);
s += ea_data.bytes;
break;
}