Merge pull request #322 from davidgiven/dtrg-minixst

Make the old minixST plat work, or at least build.

Author: davidgiven

.clang-format

@@ -1,5 +1,6 @@
 ---
 AlignAfterOpenBracket: AlwaysBreak
+AlignConsecutiveMacros: true
 AllowShortFunctionsOnASingleLine: false
 AllowShortLoopsOnASingleLine: false
 AlwaysBreakAfterDefinitionReturnType: false

README

@@ -34,6 +34,7 @@ linux386      produces ELF executables for PC Linux systems
 linux68k      produces ELF executables for m68020 Linux systems
 linuxppc      produces ELF executables for PowerPC Linux systems
 linuxmips     produces ELF executables for little-endian MIPS32r2 Linux systems
+minix68k      produces Minix executables for m68000 Minix systems
 cpm           produces i80 CP/M .COM files
 rpi           produces Raspberry Pi GPU binaries
 pdpv7         produces PDP/11 V7 Unix binaries

build.lua

@@ -11,6 +11,7 @@ vars.plats = {
 	"linux68k",
 	"linuxppc",
 	"linuxmips",
+	"minix68k",
 	"msdos86",
 	"msdos386",
 	"osx386",

lang/cem/libcc.ansi/core/misc/raise.c

@@ -7,6 +7,7 @@
 #include <stdlib.h>
 #include <sys/types.h>
 #include <signal.h>
+#include <unistd.h>
 
 #if ACKCONF_WANT_EMULATED_RAISE
 

lang/cem/libcc.ansi/headers/ack/config.h

@@ -23,6 +23,14 @@
 #define ACKCONF_WANT_STANDARD_SIGNALS 1
 #endif
 
+#ifndef ACKCONF_WANT_STANDARD_LIMITS
+#define ACKCONF_WANT_STANDARD_LIMITS 1
+#endif
+
+#ifndef ACKCONF_WANT_SYS_ERRNO_H
+#define ACKCONF_WANT_SYS_ERRNO_H 0
+#endif
+
 #ifndef ACKCONF_WANT_TERMIOS
 /* Don't compile termios-using functions unless the plat explicitly asks for it. */
 #define ACKCONF_WANT_TERMIOS 0

lang/cem/libcc.ansi/headers/errno.h

@@ -6,6 +6,10 @@
 #ifndef _ERRNO_H
 #define	_ERRNO_H
 
+#if ACKCONF_WANT_SYS_ERRNO_H
+#include <sys/errno.h>
+#else
+
 /* These values are defined by the ANSI standard. */
 
 #define EDOM    33
@@ -51,3 +55,5 @@
 extern int errno;
 
 #endif
+
+#endif

lang/cem/libcc.ansi/headers/limits.h

@@ -6,6 +6,8 @@
 #if	!defined(_LIMITS_H)
 #define	_LIMITS_H
 
+#include <ack/config.h>
+
 #define	CHAR_BIT		8
 #define	SCHAR_MIN		-128
 #define	SCHAR_MAX		127
@@ -34,4 +36,8 @@
 #define	UINT_MAX		4294967295U
 #endif
 
+#if !ACKCONF_WANT_STANDARD_LIMITS
+    #include <ack/limits.h>
+#endif
+
 #endif	/* _LIMITS_H */

lang/cem/libcc.ansi/headers/unistd.h

@@ -81,10 +81,11 @@ struct timezone
 
 extern char** environ;
 
-/* Implemented system calls */
+/* System calls (not all of which are implemented) */
 
 extern int access(const char* pathname, int mode);
 extern int brk(void* ptr);
+extern int chdir(const char* path);
 extern int close(int d);
 extern int creat(const char* path, mode_t mode);
 extern int dup(int oldfd);
@@ -111,7 +112,7 @@ extern unsigned int alarm(unsigned int seconds);
 extern pid_t wait(int* wstatus);
 extern sighandler_t signal(int signum, sighandler_t handler);
 extern ssize_t read(int fd, void* buffer, size_t count);
-extern ssize_t write(int fd, void* buffer, size_t count);
+extern ssize_t write(int fd, const void* buffer, size_t count);
 extern void _exit(int);
 extern void* sbrk(int increment);
 

lang/cem/libcc.ansi/sys/malloc/malloc.c

@@ -5,19 +5,19 @@
 
 #if ACKCONF_WANT_MALLOC
 
-block_t __mem_root = { &__mem_root, 0 };
-block_t* __mem_freelist = &__mem_root;
+memblock_t __mem_root = { &__mem_root, 0 };
+memblock_t* __mem_freelist = &__mem_root;
 
 /* Pulls more memory from the system. */
 
-static block_t* brkmore(size_t nb)
+static memblock_t* brkmore(size_t nb)
 {
 	uintptr_t bytes;
-	block_t* p;
+	memblock_t* p;
 
 	if (nb < BRKSIZE)
 		nb = BRKSIZE;
-	bytes = nb * sizeof(block_t);
+	bytes = nb * sizeof(memblock_t);
 
 	/* Danger, will robinson! sbrk's parameter is *signed*... but malloc() takes a
 	 * size_t. */
@@ -26,7 +26,7 @@ static block_t* brkmore(size_t nb)
 		return NULL;
 
 	p = sbrk(bytes);
-	if (p == (block_t*)-1)
+	if (p == (memblock_t*)-1)
 		return NULL;
 
 	/* Add it to the free list by pretending it's a used block and freeing it. */
@@ -38,16 +38,16 @@ static block_t* brkmore(size_t nb)
 
 void* malloc(size_t size)
 {
-	block_t* p;
-	block_t* prev;
+	memblock_t* p;
+	memblock_t* prev;
 	size_t nblocks;
 
 	/* Add on space for the header; make sure we allocate a round number
 	 * of blocks; avoid overflow. */
 	nblocks = BLOCKCOUNT(size);
 	if (nblocks < size)
 		return NULL;
-	nblocks /= sizeof(block_t);
+	nblocks /= sizeof(memblock_t);
 
 	prev = __mem_freelist;
 	p = prev->next;
@@ -88,8 +88,8 @@ void* malloc(size_t size)
 
 void free(void* ptr)
 {
-	block_t* h = BLOCKOF(ptr);
-	block_t* p;
+	memblock_t* h = BLOCKOF(ptr);
+	memblock_t* p;
 
 	if (!ptr)
 		return;

lang/cem/libcc.ansi/sys/malloc/malloc.h

@@ -7,19 +7,19 @@
 
 typedef struct block_s {
 	struct block_s* next;
-	size_t size; /* in sizeof(block_t) units */
-} block_t;
+	size_t size; /* in sizeof(memblock_t) units */
+} memblock_t;
 
-extern block_t __mem_root;
-extern block_t* __mem_first_free;
+extern memblock_t __mem_root;
+extern memblock_t* __mem_first_free;
 
-#define BLOCKOF(p) (((block_t*)(p)) - 1)
+#define BLOCKOF(p) (((memblock_t*)(p)) - 1)
 
 /* Smallest amount to allocate from brk */
-#define BRKSIZE (512 / sizeof(block_t))
+#define BRKSIZE (512 / sizeof(memblock_t))
 
 #define BLOCKCOUNT(bytes) \
-	(bytes + sizeof(block_t) + sizeof(block_t) - 1)
+	(bytes + sizeof(memblock_t) + sizeof(memblock_t) - 1)
 
 #endif