snprintf now working! (fixed problem will calls inside calls)
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1f9534d750
commit
f7a8a193c2
5 changed files with 44 additions and 8 deletions
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@ -2432,9 +2432,8 @@ function generate_push_expression
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return expr
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:generate_call
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expr += 8
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global 4000 expr_arg_ptrs_dat
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local expr_arg_ptrs
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expr_arg_ptrs = &expr_arg_ptrs_dat
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expr_arg_ptrs = malloc(4000)
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local arg_idx
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local call_function
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local return_val_size
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@ -2475,6 +2474,7 @@ function generate_push_expression
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arg_idx -= 1
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goto push_args_loop
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:push_args_loop_end
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free(expr_arg_ptrs)
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; create space on stack for return value
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emit_sub_rsp_imm32(return_val_size)
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@ -2,9 +2,9 @@
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int main(int argc, char **argv) {
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char buf[200] = {0};
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sprintf(buf, "Hello, %d %.2f %g %s %p\n", 187, 77.3, 349e12, "Wow!", "yea");
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// snprintf(buf, 200, "Hello\n"); //<- NOT WORKING
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write(1, buf, sizeof buf);
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return *buf;
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snprintf(buf, sizeof buf, "Hello, %d %.2f %g %s %p\n", 187, 77.3, 349e12, "Wow!", "yea");
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/* write(1, buf, sizeof buf); */
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printf("%s\n",buf);
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return 0;
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}
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@ -522,7 +522,11 @@ function parse_statement
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token += 16
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out += 8
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*8out = expressions_end
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c = expressions_end + 4
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expressions_end = parse_expression(token, p, expressions_end)
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c = types + *4c
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if *1c > TYPE_UNSIGNED_LONG goto bad_switch_type
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token = p + 16
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out += 8
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@ -542,6 +546,11 @@ function parse_statement
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:str_switch_no_lparen
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string No ( after switch.
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byte 0
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:bad_switch_type
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token_error(token, .str_bad_switch_type)
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:str_bad_switch_type
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string The expression in a switch statement must have an integer type.
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byte 0
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:stmt_while
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write_statement_header(out, STATEMENT_WHILE, token)
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token += 16
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@ -63,4 +63,10 @@ long write(int fd, void *buf, size_t count) {
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__syscall(1, fd, buf, count, 0, 0, 0);
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}
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size_t strlen(char *s) {
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char *t = s;
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while (*t) ++t;
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return t - s;
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}
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#endif // _STDC_COMMON_H
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25
05/stdio.h
25
05/stdio.h
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@ -1,6 +1,11 @@
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#ifndef _STDIO_H
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#define _STDIO_H
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#include <stdc_common.h>
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#include <stdarg.h>
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int printf(const char *, ...);
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/* --- snprintf, adapted from github.com/nothings/stb stb_sprintf.h */
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#ifndef STB_SPRINTF_MIN
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@ -1113,6 +1118,7 @@ typedef struct stbsp__context {
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static char *stbsp__clamp_callback(const char *buf, void *user, int len)
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{
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stbsp__context *c = (stbsp__context *)user;
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c->length += len;
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if (len > c->count)
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@ -1150,7 +1156,6 @@ char * stbsp__count_clamp_callback( const char * buf, void * user, int len )
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int vsnprintf( char * buf, int count, char const * fmt, va_list va )
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{
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stbsp__context c;
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if ( (count == 0) && !buf )
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{
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c.length = 0;
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@ -1165,7 +1170,7 @@ int vsnprintf( char * buf, int count, char const * fmt, va_list va )
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c.count = count;
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c.length = 0;
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STB_SPRINTF_DECORATE( vsprintfcb )( stbsp__clamp_callback, &c, stbsp__clamp_callback(0,&c,0), fmt, va );
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__vsprintfcb( stbsp__clamp_callback, &c, stbsp__clamp_callback(0,&c,0), fmt, va );
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// zero-terminate
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l = (int)( c.buf - buf );
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@ -1545,3 +1550,19 @@ static int32_t stbsp__real_to_str(char const **start, uint32_t *len, char *out,
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#undef stbsp__ddmultlos
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#undef STBSP__SPECIAL
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#undef STBSP__COPYFP
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int __fd_puts(int fd, const char *s) {
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return write(fd, s, strlen(s));
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}
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int printf(const char *fmt, ...) {
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// @TODO: use a callback with __vsnprintfcb
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va_list args;
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char buf[2000];
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va_start(args, fmt);
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vsprintf(buf, fmt, args);
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va_end(args);
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return __fd_puts(1, buf);
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}
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#endif // _STDIO_H
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