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https://github.com/ringtailsoftware/uvm32.git
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50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
#ifndef UVM32_TARGET_H
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#define UVM32_TARGET_H
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// Common to all target code
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#include "uvm32_sys.h"
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#include <stdbool.h>
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//// <stdbool>
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////typedef unsigned char bool;
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//#define true 1
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//#define false 0
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#include "target-stdint.h"
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static uint32_t syscall(uint32_t id, uint32_t param1, uint32_t param2) {
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register uint32_t a0 asm("a0") = (uint32_t)(param1);
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register uint32_t a1 asm("a1") = (uint32_t)(param2);
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register uint32_t a2 asm("a2");
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register uint32_t a7 asm("a7") = (uint32_t)(id);
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asm volatile (
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"ecall"
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: "=r"(a2) // output
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: "r"(a7), "r"(a0), "r"(a1) // input
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: "memory"
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);
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return a2;
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}
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#define syscall_cast(id, p1, p2) syscall((uint32_t)id, (uint32_t)p1, (uint32_t)p2)
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#define println(x) syscall_cast(UVM32_SYSCALL_PRINTLN, x, 0)
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#define print(x) syscall_cast(UVM32_SYSCALL_PRINT, x, 0)
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#define printdec(x) syscall_cast(UVM32_SYSCALL_PRINTDEC, x, 0)
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#define printhex(x) syscall_cast(UVM32_SYSCALL_PRINTHEX, x, 0)
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#define millis() syscall_cast(UVM32_SYSCALL_MILLIS, 0, 0)
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#define putc(x) syscall_cast(UVM32_SYSCALL_PUTC, x, 0)
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#define getc() syscall_cast(UVM32_SYSCALL_GETC, 0, 0)
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#define yield(x) syscall_cast(UVM32_SYSCALL_YIELD, x, 0)
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#define printbuf(x, y) syscall_cast(UVM32_SYSCALL_PRINTBUF, x, y)
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extern char _estack;
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static void stackprotect(void) {
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syscall_cast(UVM32_SYSCALL_STACKPROTECT, &_estack, 0);
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}
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#include "uvm32_common_custom.h"
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#endif
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