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made itoa and dbgln empty macros if no textIO is available to remove overhead

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This commit is contained in:
Anton Lydike 2021-08-22 12:22:41 +02:00
parent 5dccd2dc80
commit 828ea0c2e2
2 changed files with 18 additions and 10 deletions
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12
kinclude/io.c
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@ -2,10 +2,6 @@
#ifdef TEXT_IO_ADDR
#ifndef TEXT_IO_BUFLEN
#error "When defining TEXT_IO_ADDR, please also provide TEXT_IO_BUFLEN, otherwise textIO won't work!"
#endif
void dbgln(char* text, int len)
{
while (len > TEXT_IO_BUFLEN) {
@ -68,11 +64,7 @@ char* itoa (int value, char* str, int base)
#else
/* if no textIO module loaded, dbgln is a noop :( */
void dbgln(char* text, int len){}
char* itoa (int value, char* str, int base) {
return str;
}
// this is included to prevent "error: ISO C forbids an empty translation unit [-Wpedantic]"
typedef int make_iso_compilers_happy;
#endif

16
kinclude/io.h
View File

@ -1,10 +1,26 @@
#ifndef H_IO
#define H_IO
// if we have a textIO module
#ifdef TEXT_IO_ADDR
#ifndef TEXT_IO_BUFLEN
#error "When defining TEXT_IO_ADDR, please also provide TEXT_IO_BUFLEN, otherwise textIO won't work!"
#endif
/* print a line to the debug textIO module */
void dbgln(char* text, int len);
/* alphabet for itoa */
char* itoa (int value, char* str, int base);
#else
// if we don't have textio, dbgln becomes an empty macro to save on cycles
#define dbgln(a,b)
// itoa just evaluates to the passes pointer
#define itoa(a,b,c) b
#endif
#endif