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[/] [forwardcom/] [libraries/] [puts_light.as] - Blame information for rev 121

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1 107 Agner
/*********************************  puts_light.as *****************************
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* Author:        Agner Fog
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* date created:  2021-05-16
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* Last modified: 2021-05-16
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* Version:       1.11
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* Project:       ForwardCom library libc_light.li
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* Description:   puts: print a string to stdout, append linefeed
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* This version is for CPUs with limited capabilities
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* C declaration: int puts (const char * str);
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*
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* Copyright 2021 GNU General Public License http://www.gnu.org/licenses
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******************************************************************************/
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code section execute align = 4                   // code section
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// Print a string to stdout, append \n
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_puts function public reguse=3,0
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if (int64 r0 != 0) {  // check for null pointer
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    while (true) {    // loop through string
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        int8 r1 = [r0]             // read character
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        if (int8 r1 == 0) {break}  // end of string
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        int8 output(r1, r1, 10);   // output character
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        int64 r0++                 // next character
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    }
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    int8 r1 = '\n'                 // write newline
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    int8 output(r1, r1, 10);
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    int r0 = 0                     // indicate success
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    return
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}
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int r0 = -1                        // indicate error
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return
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_puts end
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code end

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