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remove assembler interface to xprintf()

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This commit is contained in:
Markus Fröschle
2016-11-07 10:55:00 +00:00
parent e67057c21e
commit 0ed03ee328
8 changed files with 965 additions and 996 deletions
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13
util/bas_printf.c
View File

@@ -59,19 +59,6 @@
static char snil[] = "(nil)";
void xputchar(int c)
{
__asm__ __volatile__
(
".extern printf_helper\n\t"
"move.b %0,d0\n\t"
"bsr printf_helper\n\t"
/* output */:
/* input */: "r" (c)
/* clobber */: "d0","d2","a0","memory"
);
}
static void doprnt(void (*addchar)(int), const char *sfmt, va_list ap)
{
char buf[128];

38
util/printf_helper.S
View File

@@ -1,38 +0,0 @@
/*
* printf_helper.S
*
* assembler trampoline to let printf (compiled -mpcrel) indirectly reference __MBAR
*
* This file is part of BaS_gcc.
*
* BaS_gcc is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* BaS_gcc is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with BaS_gcc. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2010 - 2012 F. Aschwanden
* Copyright 2011 - 2012 V. Riviere
* Copyright 2012 M. Froeschle
*/
.global printf_helper
printf_helper:
.extern __MBAR
.wait_txready:
move.w __MBAR+0x8604,d2 // PSCSCR0 status register
btst #10,d2 // space left in TX fifo?
beq.s .wait_txready // no, loop
lea __MBAR+0x860C,a0 // PSCSTB0 transmitter buffer register
move.b d0,(a0) // send byte
rts
// vim: set syntax=asm68k :