8848c52967
This still remains a MANUAL test due to blocking issues. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231120150833.2552739-13-alex.bennee@linaro.org>
43 lines
706 B
C
43 lines
706 B
C
/*
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* Semihosting Console Test
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*
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* Copyright (c) 2019 Linaro Ltd
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include <stdint.h>
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#include <minilib.h>
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#define SYS_READC 0x7
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uintptr_t __semi_call(uintptr_t type, uintptr_t arg0)
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{
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register uintptr_t t asm("r0") = type;
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register uintptr_t a0 asm("r1") = arg0;
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#ifdef __thumb__
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# define SVC "svc 0xab"
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#else
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# define SVC "svc 0x123456"
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#endif
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asm(SVC : "=r" (t)
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: "r" (t), "r" (a0));
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return t;
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}
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int main(void)
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{
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char c;
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ml_printf("Semihosting Console Test\n");
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ml_printf("hit X to exit:");
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do {
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c = __semi_call(SYS_READC, 0);
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__sys_outc(c);
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} while (c != 'X');
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return 0;
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}
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