duskos

commit cf38c68a0d2fbb76063d5e63691c7cc4e1e295cb
parent abd884945d66755c239d54ea258a4f366c0e23ae
Author: Virgil Dupras <hsoft@hardcoded.net>
Date:   Sun,  4 Dec 2022 10:15:56 -0500

posix/vm: bump memory to 16MB

uxntal requires a lot of memory...

Diffstat:
M
fs/asm/uxntal.c
 | 
9
+++++----
M
fs/doc/cc/usage.txt
 | 
1
+
M
posix/vm.c
 | 
2
+-

3 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/fs/asm/uxntal.c b/fs/asm/uxntal.c
@@ -29,6 +29,7 @@ typedef struct {
 	Uint16 addr;
 } Reference;
 
+// TODO: this is pretty memory hungry by Dusk standards, revisit algo.
 typedef struct {
 	Uint8 data[LENGTH];
 	unsigned int ptr;
@@ -44,7 +45,6 @@ typedef struct {
 
 Program p;
 
-// TODO: compile error
 static char* ops[$20] = {
 	"LIT"0, "INC"0, "POP"0, "NIP"0, "SWP"0, "ROT"0, "DUP"0, "OVR"0,
 	"EQU"0, "NEQ"0, "GTH"0, "LTH"0, "JMP"0, "JCN"0, "JSR"0, "STH"0,
@@ -58,12 +58,12 @@ static int   shex(char *s) { int n = 0, i = 0; char c; while((c = s[i++])) if(c 
 static int   slen(char *s) { int i = 0; while(s[i]) i++; return i; } /* string length */
 static int   spos(char *s, char c) { Uint8 i = 0, j; while((j = s[i++])) if(j == c) return i; return -1; } /* character position */
 static char *scpy(char *src, char *dst, int len) { int i = 0; while((dst[i] = src[i]) && i < len - 2) i++; dst[i + 1] = 0; return dst; } /* string copy */
-static char *scat(char *dst, const char *src) { char *ptr = dst + slen(dst); while(*src) *ptr++ = *src++; *ptr = 0; return dst; } /* string cat */
+static char *scat(char *dst, char *src) { char *ptr = dst + slen(dst); while(*src) *ptr++ = *src++; *ptr = 0; return dst; } /* string cat */
 
 static int parse(char *w, int hdl);
 
 static int
-error(const char *name, const char *msg)
+error(char *name, char *msg)
 {
 	fprintf(name, msg, "%s: %s\n", ConsoleOut());
 	return 0;
@@ -79,6 +79,7 @@ static Macro *
 findmacro(char *name)
 {
 	int i;
+	// TODO: compile error below
 	for(i = 0; i < p.mlen; i++)
 		if(scmp(p.macros[i].name, name, $40))
 			return &p.macros[i];
@@ -251,7 +252,7 @@ writelitbyte(Uint8 b)
 }
 
 static int
-doinclude(const char *filename)
+doinclude(char *filename)
 {
 	int hdl;
 	char w[$40];
diff --git a/fs/doc/cc/usage.txt b/fs/doc/cc/usage.txt
@@ -58,6 +58,7 @@ are a few differences:
   to write that?!?) must be written as "a ? (b ? c : d) : (e ? f : g)"
 * The keyword "static" has a slightly different meaning. See below.
 * No multi-dimensional array.
+* No "const" attribute
 
 ## Pre-processor
 
diff --git a/posix/vm.c b/posix/vm.c
@@ -18,7 +18,7 @@ The VM is little endian.
 #include <stdlib.h>
 #undef FOPEN // some platforms' fcntl.h define FOPEN which clashes below.
 
-#define MEMSZ 0x100000 // 1MB
+#define MEMSZ 0x1000000 // 16MB
 #define STACKSZ 0x800
 #define RSTOP MEMSZ
 #define PSTOP (RSTOP-STACKSZ)