ref: 6a2031a326adf120eaa2c0baa5201f074251ed9c
parent: 8df711f4d80aa9402bf9d7aa5e5603e0032c248d
author: Roberto E. Vargas Caballero <[email protected]>
date: Fri Jan 4 10:27:03 EST 2019
Remove myro files We also remove the pack/unpack functions because they had a dependency with the myro files. It also meant to disable the output in ld.
--- a/doc/myro.txt
+++ /dev/null
@@ -1,177 +1,0 @@
-Object File Format
-------------------
-
-The object file format is designed to be the simplest format that covers
-all the needs of many modern programming languages, with sufficient support
-for hand written assembly. All the types are little endian.
-
-File Format
------------
-
- +== Header ======+
- | signature | 32 bits
- +----------------+
- | format str | MyroN bit
- | |
- +----------------+
- | entrypoint | MyroN bit
- | |
- +----------------+
- | stringtab size | MyroN bit
- | |
- +----------------+
- | section size | MyroN bit
- | |
- +----------------+
- | symtab size | MyroN bit
- | |
- +----------------+
- | reloctab size | MyroN bit
- | |
- +== Metadata ====+
- | strings... |
- | .... |
- +----------------+
- | sections... |
- | ... |
- |----------------+
- | symbols.... |
- | ... |
- +----------------+
- | relocations... |
- | ... |
- +== Data ========+
- | data... |
- | ... |
- +================+
-
-The file is composed of three components: The header, the metadata, and
-the data. The header begins with a signature, containing the four bytes
-"uobj", identifying this file as a unified object. It is followed by
-a string offste with a format description (it may be used to indicate
-file format version, architecture, abi, ...) .This is followed by the
-size of the string table, the size of the section table, the size of
-the symbol table, and the size of the relocation table.
-
-Metadata: Strings
------------------
-
-The string table directly follows the header. It contains an array
-of strings. Each string is a sequence of bytes terminated by a zero
-byte. A string may contain any characters other than the zero byte. Any
-reference to a string is done using an offset into the string table. If
-it is needed to indicate a "no string" then the value -1 may be used.
-
-Metadata: Sections
-------------------
-
-The section table follows the string table. The section table defines where
-data in a program goes.
-
- +== Sect ========+
- | str | 32 bit
- +----------------+
- | flags | 16 bit
- +----------------+
- | fill value | 8 bit
- +----------------+
- | aligment | 8 bit
- +----------------+
- | offset | MyroN bit
- +----------------+
- | len | MyroN bit
- +----------------+
-
-All the files must defined at least 5 sections, numbered 1 through 5,
-which are implcitly included in every binary:
-
- .text SprotRread | SprotWrite | Sload | Sfile | SprotExec
- .data SprotRread | SprotWrite | Sload | Sfile
- .bss SprotRread | SprotWrite | Sload
- .rodata SprotRread | Sload | Sfile
- .blob Sblod | Sfile
-
-A program may have at most 65,535 sections. Sections have the followign flags;
-
- SprotRead = 1 << 0
- SprotWrite = 1 << 1
- SprotExec = 1 << 2
- Sload = 1 << 3
- Sfile = 1 << 4
- Sabsolute = 1 << 5
- Sblob = 1 << 6
-
-Blob section. This is not loaded into the program memory. It may be used
-for debug info, tagging the binary, and other similar uses.
-
-Metadata: Symbols
------------------
-
-The symbol table follows the string table. The symbol table contains an array
-of symbol defs. Each symbol has the following structure:
-
-
- +== Sym =========+
- | str name | 32 bits
- +----------------+
- | str type | 32 bits
- +----------------+
- | section id | 8 bits
- +----------------+
- | flags | 8 bits
- +----------------+
- | offset | MyroN bits
- | |
- +----------------+
- | len | MyroN bits
- | |
- +----------------+
-
-The string is an offset into the string table, pointing to the start
-of the string. The kind describes where in the output the data goes
-and what its role is. The offset describes where, relative to the start
-of the data, the symbol begins. The length describes how many bytes it is.
-
-Currently, there's one flag supported:
-
- 1 << 1: Deduplicate the symbol.
- 1 << 2: Common storage for the symbol.
- 1 << 3: external symbol
- 1 << 4: undefined symbol
-
-Metadata: Relocations
-----------------------
-
-The relocations follow the symbol table. Each relocation has the
-following structure:
-
-
- +== Reloc =======+
- | 0 | symbol id | 32 bits
- | 1 | section id |
- +----------------+
- | flags | 8 bits
- +----------------+
- | rel size | 8 bits
- +----------------+
- | mask size | 8 bits
- +----------------+
- | mask shift | 8 bits
- +----------------+
- | offset | MyroN bits
- | |
- +----------------+
-
-Relocations write the appropriate value into the offset requested.
-The offset is relative to the base of the section where the symbol
-is defined.
-
-The flags may be:
-
- Rabsolute = 1 << 0
- Roverflow = 1 << 1
-
-Data
-----
-
-It's just data. What do you want?
--- a/include/scc/scc/myro.h
+++ /dev/null
@@ -1,79 +1,0 @@
-#define MYROHDR_SIZ 48
-#define MYROSECT_SIZ 24
-#define MYROSYM_SIZ 26
-#define MYROREL_SIZ 16
-
-#define MYROMAGIC_SIZ 4
-#define MYROMAGIC "uobj"
-
-#define MYROMAXSEC 254
-
-struct myrohdr {- char magic[4];
- unsigned long format;
- unsigned long long entry;
- unsigned long long strsize;
- unsigned long long secsize;
- unsigned long long symsize;
- unsigned long long relsize;
-};
-
-struct myrosect {- unsigned long name;
- unsigned short flags;
- unsigned char fill;
- unsigned char aligment;
- unsigned long long offset;
- unsigned long long len;
-};
-
-struct myrosym {- unsigned long name;
- unsigned long type;
- unsigned char section;
- unsigned char flags;
- unsigned long long offset;
- unsigned long long len;
-};
-
-struct myrorel {- unsigned long id;
- unsigned char flags;
- unsigned char size;
- unsigned char nbits;
- unsigned char shift;
- unsigned long long offset;
-};
-
-enum myrosecflg {- MYROSEC_READ = 1 << 0,
- MYROSEC_WRITE = 1 << 1,
- MYROSEC_EXEC = 1 << 2,
- MYROSEC_LOAD = 1 << 3,
- MYROSEC_FILE = 1 << 4,
- MYROSEC_ABS = 1 << 5,
-};
-
-enum myrosymflg {- MYROSYM_COMMON = 1 << 0,
- MYROSYM_EXTERN = 1 << 1,
- MYROSYM_GLOBAL = 1 << 2,
- MYROSYM_UNDEF = 1 << 3,
- MYROSYM_ABS = 1 << 4,
-};
-
-enum myrosectnames {- MYRO_TEXT = 0,
- MYRO_DATA = 1,
- MYRO_BSS = 2,
- MYRO_ABS = 3,
-};
-
-extern int wrmyrohdr(FILE *fp, struct myrohdr *hdr);
-extern int wrmyrosec(FILE *fp, struct myrosect *sect);
-extern int wrmyrosym(FILE *fp, struct myrosym *sym);
-extern int wrmyrorel(FILE *fp, struct myrorel *rel);
-extern int rdmyrohdr(FILE *fp, struct myrohdr *hdr);
-extern int rdmyrosec(FILE *fp, struct myrosect *sect);
-extern int rdmyrosym(FILE *fp, struct myrosym *sym);
-extern int rdmyrorel(FILE *fp, struct myrorel *rel);
--- a/src/ld/Makefile
+++ b/src/ld/Makefile
@@ -4,7 +4,6 @@
include $(PROJECTDIR)/scripts/rules.mk
OBJS = main.o \
- coff32.o \
obj.o \
TARGET = $(BINDIR)/ld
@@ -11,10 +10,10 @@
all: $(TARGET)
-$(TARGET): $(LIBDIR)/libcoff32.a $(LIBDIR)/libscc.a
+$(TARGET): $(LIBDIR)/libscc.a
$(TARGET): $(OBJS)
- $(CC) $(SCC_LDFLAGS) $(OBJS) -lcoff32 -lscc -o $@
+ $(CC) $(SCC_LDFLAGS) $(OBJS) -lscc -o $@
dep: inc-dep
--- a/src/ld/main.c
+++ b/src/ld/main.c
@@ -23,6 +23,21 @@
static int done;
+Obj *
+probe(char *fname, char *member, FILE *fp)
+{+}
+
+Obj *
+load(Obj *obj)
+{+}
+
+void
+writeout(FILE *fp)
+{+}
+
void
redefined(Obj *obj, Symbol *sym)
{--- a/src/libscc/Makefile
+++ b/src/libscc/Makefile
@@ -12,12 +12,6 @@
xstrdup.o \
alloc.o \
casecmp.o \
- lunpack.o \
- lpack.o \
- bunpack.o \
- bpack.o \
- wmyro.o \
- rmyro.o \
TARGET = $(LIBDIR)/libscc.a
--- a/src/libscc/bunpack.c
+++ /dev/null
@@ -1,71 +1,0 @@
-static char sccsid[] = "@(#) ./lib/scc/bunpack.c";
-
-#include <ctype.h>
-#include <stdarg.h>
-
-#include <scc/scc.h>
-
-int
-bunpack(unsigned char *src, char *fmt, ...)
-{- unsigned char *bp, *cp;
- unsigned short *sp;
- unsigned s;
- unsigned long *lp, l;
- unsigned long long *qp, q;
- va_list va;
- size_t n;
- int d;
-
- bp = src;
- va_start(va, fmt);
- while (*fmt) {- switch (*fmt++) {- case '\'':
- for (n = 0; isdigit(*fmt); n += d) {- n *= 10;
- d = *fmt++ - '0';
- }
- cp = va_arg(va, unsigned char *);
- while (n--)
- *cp++ = *bp++;
- break;
- case 'c':
- cp = va_arg(va, unsigned char *);
- *cp = *bp++;
- break;
- case 's':
- sp = va_arg(va, unsigned short *);
- s = (unsigned) *bp++ << 8;
- s |= (unsigned) *bp++;
- *sp = s;
- break;
- case 'l':
- lp = va_arg(va, unsigned long *);
- l = (unsigned long) *bp++ << 24;
- l |= (unsigned long) *bp++ << 16;
- l |= (unsigned long) *bp++ << 8;
- l |= (unsigned long) *bp++;
- *lp = l;
- break;
- case 'q':
- qp = va_arg(va, unsigned long long *);
- q = (unsigned long long) *bp++ << 56;
- q |= (unsigned long long) *bp++ << 48;
- q |= (unsigned long long) *bp++ << 40;
- q |= (unsigned long long) *bp++ << 32;
- q |= (unsigned long long) *bp++ << 24;
- q |= (unsigned long long) *bp++ << 16;
- q |= (unsigned long long) *bp++ << 8;
- q |= (unsigned long long) *bp++;
- *qp = q;
- break;
- default:
- va_end(va);
- return -1;
- }
- }
- va_end(va);
-
- return bp - src;
-}
--- a/src/libscc/deps.mk
+++ b/src/libscc/deps.mk
@@ -1,17 +1,11 @@
#deps
alloc.o: $(INCDIR)/scc/scc/scc.h
bpack.o: $(INCDIR)/scc/scc/scc.h
-bunpack.o: $(INCDIR)/scc/scc/scc.h
casecmp.o: $(INCDIR)/scc/scc/scc.h
debug.o: $(INCDIR)/scc/scc/scc.h
die.o: $(INCDIR)/scc/scc/scc.h
lpack.o: $(INCDIR)/scc/scc/scc.h
-lunpack.o: $(INCDIR)/scc/scc/scc.h
newitem.o: $(INCDIR)/scc/scc/scc.h
-rmyro.o: $(INCDIR)/scc/scc/myro.h
-rmyro.o: $(INCDIR)/scc/scc/scc.h
-wmyro.o: $(INCDIR)/scc/scc/myro.h
-wmyro.o: $(INCDIR)/scc/scc/scc.h
xcalloc.o: $(INCDIR)/scc/scc/scc.h
xmalloc.o: $(INCDIR)/scc/scc/scc.h
xrealloc.o: $(INCDIR)/scc/scc/scc.h
--- a/src/libscc/lunpack.c
+++ /dev/null
@@ -1,71 +1,0 @@
-static char sccsid[] = "@(#) ./lib/scc/lunpack.c";
-
-#include <ctype.h>
-#include <stdarg.h>
-
-#include <scc/scc.h>
-
-int
-lunpack(unsigned char *src, char *fmt, ...)
-{- unsigned char *bp, *cp;
- unsigned short *sp;
- unsigned s;
- unsigned long *lp, l;
- unsigned long long *qp, q;
- va_list va;
- size_t n;
- int d;
-
- bp = src;
- va_start(va, fmt);
- while (*fmt) {- switch (*fmt++) {- case '\'':
- for (n = 0; isdigit(*fmt); n += d) {- n *= 10;
- d = *fmt++ - '0';
- }
- cp = va_arg(va, unsigned char *);
- while (n--)
- *cp++ = *bp++;
- break;
- case 'c':
- cp = va_arg(va, unsigned char *);
- *cp = *bp++;
- break;
- case 's':
- sp = va_arg(va, unsigned short *);
- s = (unsigned) *bp++;
- s |= (unsigned) *bp++ << 8;
- *sp = s;
- break;
- case 'l':
- lp = va_arg(va, unsigned long *);
- l = (unsigned long) *bp++;
- l |= (unsigned long) *bp++ << 8;
- l |= (unsigned long) *bp++ << 16;
- l |= (unsigned long) *bp++ << 24;
- *lp = l;
- break;
- case 'q':
- qp = va_arg(va, unsigned long long *);
- q = (unsigned long long) *bp++;
- q |= (unsigned long long) *bp++ << 8;
- q |= (unsigned long long) *bp++ << 16;
- q |= (unsigned long long) *bp++ << 24;
- q |= (unsigned long long) *bp++ << 32;
- q |= (unsigned long long) *bp++ << 40;
- q |= (unsigned long long) *bp++ << 48;
- q |= (unsigned long long) *bp++ << 56;
- *qp = q;
- break;
- default:
- va_end(va);
- return -1;
- }
- }
- va_end(va);
-
- return bp - src;
-}
--- a/src/libscc/rmyro.c
+++ /dev/null
@@ -1,94 +1,0 @@
-static char sccsid[] = "@(#) ./lib/scc/rmyro.c";
-
-#include <assert.h>
-#include <stdio.h>
-#include <string.h>
-
-#include <scc/scc.h>
-#include <scc/myro.h>
-
-int
-rdmyrohdr(FILE *fp, struct myrohdr *hdr)
-{- unsigned char buf[MYROHDR_SIZ];
- int len;
-
- fread(buf, sizeof(buf), 1, fp);
- if (ferror(fp))
- return EOF;
- len = lunpack(buf, "cccclqqqqq",
- hdr->magic+0, hdr->magic+1,
- hdr->magic+2, hdr->magic+3,
- &hdr->format,
- &hdr->entry,
- &hdr->strsize,
- &hdr->secsize,
- &hdr->symsize,
- &hdr->relsize);
- assert(len == MYROHDR_SIZ);
-
- return len;
-}
-
-int
-rdmyrosec(FILE *fp, struct myrosect *sect)
-{- unsigned char buf[MYROSECT_SIZ];
- int len;
-
- fread(buf, sizeof(buf), 1, fp);
- if (ferror(fp))
- return EOF;
- len = lunpack(buf, "lsccqq",
- §->name,
- §->flags,
- §->fill,
- §->aligment,
- §->offset,
- §->len);
- assert(len == MYROSECT_SIZ);
-
- return len;
-}
-
-int
-rdmyrosym(FILE *fp, struct myrosym *sym)
-{- unsigned char buf[MYROSYM_SIZ];
- int len;
-
- fread(buf, sizeof(buf), 1, fp);
- if (ferror(fp))
- return EOF;
- len = lunpack(buf, "llccqq",
- &sym->name,
- &sym->type,
- &sym->section,
- &sym->flags,
- &sym->offset,
- &sym->len);
- assert(len == MYROSYM_SIZ);
-
- return len;
-}
-
-int
-rdmyrorel(FILE *fp, struct myrorel *rel)
-{- unsigned char buf[MYROREL_SIZ];
- int len;
-
- fread(buf, sizeof(buf), 1, fp);
- if (ferror(fp))
- return EOF;
- len = lunpack(buf, "lccccq",
- &rel->id,
- &rel->flags,
- &rel->size,
- &rel->nbits,
- &rel->shift,
- &rel->offset);
- assert(len == MYROREL_SIZ);
-
- return len;
-}
--- a/src/libscc/wmyro.c
+++ /dev/null
@@ -1,86 +1,0 @@
-static char sccsid[] = "@(#) ./lib/scc/wmyro.c";
-
-#include <assert.h>
-#include <stdio.h>
-#include <string.h>
-
-#include <scc/scc.h>
-#include <scc/myro.h>
-
-int
-wrmyrohdr(FILE *fp, struct myrohdr *hdr)
-{- unsigned char buf[MYROHDR_SIZ];
- int len;
-
- len = lpack(buf, "cccclqqqqq",
- hdr->magic[0], hdr->magic[1],
- hdr->magic[2], hdr->magic[3],
- hdr->format,
- hdr->entry,
- hdr->strsize,
- hdr->secsize,
- hdr->symsize,
- hdr->relsize);
- assert(MYROHDR_SIZ == len);
- fwrite(buf, len, 1, fp);
-
- return (ferror(fp)) ? EOF : len;
-}
-
-int
-wrmyrosec(FILE *fp, struct myrosect *sect)
-{- unsigned char buf[MYROSECT_SIZ];
- int len;
-
- len = lpack(buf, "lsccqq",
- sect->name,
- sect->flags,
- sect->fill,
- sect->aligment,
- sect->offset,
- sect->len);
- assert(MYROSECT_SIZ == len);
- fwrite(buf, len, 1, fp);
-
- return (ferror(fp)) ? EOF : len;
-}
-
-int
-wrmyrosym(FILE *fp, struct myrosym *sym)
-{- unsigned char buf[MYROSYM_SIZ];
- int len;
-
- len = lpack(buf, "llccqq",
- sym->name,
- sym->type,
- sym->section,
- sym->flags,
- sym->offset,
- sym->len);
- assert(MYROSYM_SIZ == len);
- fwrite(buf, len, 1, fp);
-
- return (ferror(fp)) ? EOF : len;
-}
-
-int
-wrmyrorel(FILE *fp, struct myrorel *rel)
-{- unsigned char buf[MYROREL_SIZ];
- int len;
-
- len = lpack(buf, "lccccq",
- rel->id,
- rel->flags,
- rel->size,
- rel->nbits,
- rel->shift,
- rel->offset);
- assert(MYROREL_SIZ == len);
- fwrite(buf, len, 1, fp);
-
- return (ferror(fp)) ? EOF : len;
-}