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(uxnasm) Recover

This commit is contained in:
Devine Lu Linvega 2024-03-28 14:39:52 -07:00
parent f55a6a0b55
commit 5e593e7931
1 changed files with 9 additions and 7 deletions
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16
src/uxnasm.c
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@ -22,7 +22,7 @@ typedef struct { char *name, rune, *content; Uint16 addr, refs; } Item;
typedef struct { int line; char *path; } Context; typedef struct { int line; char *path; } Context;
static int ptr, length; static int ptr, length;
static char token[0x40], *scope, lambda[0x05]; static char token[0x40], scope[0x40], lambda[0x05];
static char dict[0x4000], *dictnext = dict; static char dict[0x4000], *dictnext = dict;
static Uint8 data[0x10000], lambda_stack[0x100], lambda_ptr, lambda_len; static Uint8 data[0x10000], lambda_stack[0x100], lambda_ptr, lambda_len;
static Uint16 labels_len, refs_len, macro_len; static Uint16 labels_len, refs_len, macro_len;
@ -37,15 +37,16 @@ static char ops[][4] = {
"ADD", "SUB", "MUL", "DIV", "AND", "ORA", "EOR", "SFT" "ADD", "SUB", "MUL", "DIV", "AND", "ORA", "EOR", "SFT"
}; };
static int cndx(char *s, char t) { int i = 0; char c; while((c = *s++)) { if(c == t) return i; i++; } return -1; } /* chr in str */
static int sihx(char *s) { char c; while((c = *s++)) if(cndx(hexad, c) < 0) return 0; return 1; } /* str is hex */
static int shex(char *s) { int n = 0; char c; while((c = *s++)) { n = n << 4, n |= cndx(hexad, c); } return n; } /* str to num */
static int scmp(char *a, char *b, int len) { int i = 0; while(a[i] == b[i]) if(!a[i] || ++i >= len) return 1; return 0; } /* str compare */
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; } /* str copy */
static char *save(char *s, char c) { char *o = dictnext; while((*dictnext++ = *s++) && *s); *dictnext++ = c; return o; } /* save to dict */ static char *save(char *s, char c) { char *o = dictnext; while((*dictnext++ = *s++) && *s); *dictnext++ = c; return o; } /* save to dict */
static char *join(char *a, char j, char *b) { char *res = dictnext; save(a, j), save(b, 0); return res; } /* join two str */ static char *join(char *a, char j, char *b) { char *res = dictnext; save(a, j), save(b, 0); return res; } /* join two str */
static int find(char *s, char t) { int i = 0; char c; while((c = *s++)) { if(c == t) return i; i++; } return -1; } /* chr in str */
static int sihx(char *s) { char c; while((c = *s++)) if(find(hexad, c) < 0) return 0; return 1; } /* str is hex */
static int shex(char *s) { int n = 0; char c; while((c = *s++)) { n = n << 4, n |= find(hexad, c); } return n; } /* str to num */
static int scmp(char *a, char *b, int len) { int i = 0; while(a[i] == b[i]) if(!a[i] || ++i >= len) return 1; return 0; } /* str compare */
#define isopcode(x) (findopcode(x) || scmp(x, "BRK", 4)) #define isopcode(x) (findopcode(x) || scmp(x, "BRK", 4))
#define isinvalid(x) (!x[0] || sihx(x) || isopcode(x) || find(runes, x[0]) >= 0) #define isinvalid(x) (!x[0] || sihx(x) || isopcode(x) || cndx(runes, x[0]) >= 0)
#define writeshort(x) (writebyte(x >> 8, ctx) && writebyte(x & 0xff, ctx)) #define writeshort(x) (writebyte(x >> 8, ctx) && writebyte(x & 0xff, ctx))
#define findlabel(x) finditem(x, labels, labels_len) #define findlabel(x) finditem(x, labels, labels_len)
#define findmacro(x) finditem(x, macros, macro_len) #define findmacro(x) finditem(x, macros, macro_len)
@ -226,6 +227,7 @@ makeref(char *label, char rune, Uint16 addr)
return 1; return 1;
} }
static int static int
writepad(char *w) writepad(char *w)
{ {
@ -403,7 +405,7 @@ int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
ptr = PAGE; ptr = PAGE;
scope = push("On-reset", 0); scpy("on-reset", scope, 0x40);
if(argc == 1) return error_top("usage", "uxnasm [-v] input.tal output.rom"); if(argc == 1) return error_top("usage", "uxnasm [-v] input.tal output.rom");
if(scmp(argv[1], "-v", 2)) return !fprintf(stdout, "Uxnasm - Uxntal Assembler, 28 Mar 2024.\n"); if(scmp(argv[1], "-v", 2)) return !fprintf(stdout, "Uxnasm - Uxntal Assembler, 28 Mar 2024.\n");
if(!assemble(argv[1]) || !length) return !error_top("Assembly", "Failed to assemble rom."); if(!assemble(argv[1]) || !length) return !error_top("Assembly", "Failed to assemble rom.");