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Diffstat (limited to 'utils/6l/asm.c')
-rw-r--r--utils/6l/asm.c168
1 files changed, 28 insertions, 140 deletions
diff --git a/utils/6l/asm.c b/utils/6l/asm.c
index 5aebd872..c4d46633 100644
--- a/utils/6l/asm.c
+++ b/utils/6l/asm.c
@@ -4,7 +4,7 @@
#define PADDR(a) ((ulong)(a) & ~0x80000000)
-long
+vlong
entryvalue(void)
{
char *a;
@@ -52,6 +52,13 @@ lput(long l)
}
void
+llput(vlong v)
+{
+ lput(v>>32);
+ lput(v);
+}
+
+void
lputl(long l)
{
cput(l);
@@ -80,6 +87,7 @@ asmb(void)
long v, magic;
int a;
uchar *op1;
+ vlong vl;
if(debug['v'])
Bprint(&bso, "%5.2f asmb\n", cputime());
@@ -123,21 +131,10 @@ asmb(void)
switch(HEADTYPE) {
default:
diag("unknown header type %ld", HEADTYPE);
- case 0:
- seek(cout, rnd(HEADR+textsize, 8192), 0);
- break;
- case 1:
- textsize = rnd(HEADR+textsize, 4096)-HEADR;
- seek(cout, textsize+HEADR, 0);
- break;
case 2:
case 5:
seek(cout, HEADR+textsize, 0);
break;
- case 3:
- case 4:
- seek(cout, HEADR+rnd(textsize, INITRND), 0);
- break;
}
if(debug['v'])
@@ -167,20 +164,10 @@ asmb(void)
Bflush(&bso);
switch(HEADTYPE) {
default:
- case 0:
- seek(cout, rnd(HEADR+textsize, 8192)+datsize, 0);
- break;
- case 1:
- seek(cout, rnd(HEADR+textsize, INITRND)+datsize, 0);
- break;
case 2:
case 5:
seek(cout, HEADR+textsize+datsize, 0);
break;
- case 3:
- case 4:
- debug['s'] = 1;
- break;
}
if(!debug['s'])
asmsym();
@@ -207,97 +194,23 @@ asmb(void)
seek(cout, 0L, 0);
switch(HEADTYPE) {
default:
- case 0: /* garbage */
- lput(0x160L<<16); /* magic and sections */
- lput(0L); /* time and date */
- lput(rnd(HEADR+textsize, 4096)+datsize);
- lput(symsize); /* nsyms */
- lput((0x38L<<16)|7L); /* size of optional hdr and flags */
- lput((0413<<16)|0437L); /* magic and version */
- lput(rnd(HEADR+textsize, 4096)); /* sizes */
+ case 2: /* plan9 */
+ magic = 4*26*26+7;
+ magic |= 0x00008000; /* fat header */
+ if(dlm)
+ magic |= 0x80000000; /* dlm */
+ lput(magic); /* magic */
+ lput(textsize); /* sizes */
lput(datsize);
lput(bsssize);
- lput(entryvalue()); /* va of entry */
- lput(INITTEXT-HEADR); /* va of base of text */
- lput(INITDAT); /* va of base of data */
- lput(INITDAT+datsize); /* va of base of bss */
- lput(~0L); /* gp reg mask */
- lput(0L);
- lput(0L);
- lput(0L);
- lput(0L);
- lput(~0L); /* gp value ?? */
- break;
- lputl(0); /* x */
- case 1: /* unix coff */
- /*
- * file header
- */
- lputl(0x0004014c); /* 4 sections, magic */
- lputl(0); /* unix time stamp */
- lputl(0); /* symbol table */
- lputl(0); /* nsyms */
- lputl(0x0003001c); /* flags, sizeof a.out header */
- /*
- * a.out header
- */
- lputl(0x10b); /* magic, version stamp */
- lputl(rnd(textsize, INITRND)); /* text sizes */
- lputl(datsize); /* data sizes */
- lputl(bsssize); /* bss sizes */
- lput(entryvalue()); /* va of entry */
- lputl(INITTEXT); /* text start */
- lputl(INITDAT); /* data start */
- /*
- * text section header
- */
- strnput(".text", 8);
- lputl(HEADR); /* pa */
- lputl(HEADR); /* va */
- lputl(textsize); /* text size */
- lputl(HEADR); /* file offset */
- lputl(0); /* relocation */
- lputl(0); /* line numbers */
- lputl(0); /* relocation, line numbers */
- lputl(0x20); /* flags text only */
- /*
- * data section header
- */
- strnput(".data", 8);
- lputl(INITDAT); /* pa */
- lputl(INITDAT); /* va */
- lputl(datsize); /* data size */
- lputl(HEADR+textsize); /* file offset */
- lputl(0); /* relocation */
- lputl(0); /* line numbers */
- lputl(0); /* relocation, line numbers */
- lputl(0x40); /* flags data only */
- /*
- * bss section header
- */
- strnput(".bss", 8);
- lputl(INITDAT+datsize); /* pa */
- lputl(INITDAT+datsize); /* va */
- lputl(bsssize); /* bss size */
- lputl(0); /* file offset */
- lputl(0); /* relocation */
- lputl(0); /* line numbers */
- lputl(0); /* relocation, line numbers */
- lputl(0x80); /* flags bss only */
- /*
- * comment section header
- */
- strnput(".comment", 8);
- lputl(0); /* pa */
- lputl(0); /* va */
- lputl(symsize+lcsize); /* comment size */
- lputl(HEADR+textsize+datsize); /* file offset */
- lputl(HEADR+textsize+datsize); /* offset of syms */
- lputl(HEADR+textsize+datsize+symsize);/* offset of line numbers */
- lputl(0); /* relocation, line numbers */
- lputl(0x200); /* flags comment only */
+ lput(symsize); /* nsyms */
+ vl = entryvalue();
+ lput(PADDR(vl)); /* va of entry */
+ lput(spsize); /* sp offsets */
+ lput(lcsize); /* line offsets */
+ llput(vl); /* va of entry */
break;
- case 2: /* plan9 */
+ case 3: /* plan9 */
magic = 4*26*26+7;
if(dlm)
magic |= 0x80000000;
@@ -310,31 +223,6 @@ asmb(void)
lput(spsize); /* sp offsets */
lput(lcsize); /* line offsets */
break;
- case 3:
- /* MS-DOS .COM */
- break;
- case 4:
- /* fake MS-DOS .EXE */
- v = rnd(HEADR+textsize, INITRND)+datsize;
- wputl(0x5A4D); /* 'MZ' */
- wputl(v % 512); /* bytes in last page */
- wputl(rnd(v, 512)/512); /* total number of pages */
- wputl(0x0000); /* number of reloc items */
- v = rnd(HEADR-(INITTEXT & 0xFFFF), 16);
- wputl(v/16); /* size of header */
- wputl(0x0000); /* minimum allocation */
- wputl(0xFFFF); /* maximum allocation */
- wputl(0x0000); /* initial ss value */
- wputl(0x0100); /* initial sp value */
- wputl(0x0000); /* complemented checksum */
- v = entryvalue();
- wputl(v); /* initial ip value (!) */
- wputl(0x0000); /* initial cs value */
- wputl(0x0000);
- wputl(0x0000);
- wputl(0x003E); /* reloc table offset */
- wputl(0x0000); /* overlay number */
- break;
case 5:
strnput("\177ELF", 4); /* e_ident */
cput(1); /* class = 32 bit */
@@ -342,12 +230,12 @@ asmb(void)
cput(1); /* version = CURRENT */
strnput("", 9);
wputl(2); /* type = EXEC */
- wputl(3); /* machine = 386 */
+ wputl(62); /* machine = AMD64 */
lputl(1L); /* version = CURRENT */
lputl(PADDR(entryvalue())); /* entry vaddr */
lputl(52L); /* offset to first phdr */
lputl(0L); /* offset to first shdr */
- lputl(0L); /* flags = 386 */
+ lputl(0L); /* processor specific flags */
wputl(52); /* Ehdr size */
wputl(32); /* Phdr size */
wputl(3); /* # of Phdrs */
@@ -554,10 +442,10 @@ datblk(long s, long n)
write(cout, buf.dbuf, n);
}
-long
-rnd(long v, long r)
+vlong
+rnd(vlong v, vlong r)
{
- long c;
+ vlong c;
if(r <= 0)
return v;
generated by cgit v1.2.3 (git 2.46.0) at 2025-12-10 06:55:20 +0000