mirror of
https://github.com/ringtailsoftware/uvm32.git
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74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
// Common to all target code
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#include "uvm32_sys.h"
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// <stdint>
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typedef unsigned long long uint64_t;
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typedef unsigned long uint32_t;
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typedef unsigned short uint16_t;
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typedef unsigned char uint8_t;
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typedef long long int64_t;
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typedef long int32_t;
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typedef short int16_t;
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typedef char int8_t;
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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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#ifndef size_assert
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#define size_assert( what, howmuch ) \
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typedef char what##_size_wrong_[( !!(sizeof(what) == howmuch) )*2-1 ]
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#endif
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// sanity check
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size_assert(uint64_t, 8);
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size_assert(uint32_t, 4);
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size_assert(uint16_t, 2);
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size_assert(uint8_t, 1);
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size_assert(int64_t, 8);
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size_assert(int32_t, 4);
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size_assert(int16_t, 2);
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size_assert(int8_t, 1);
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static uint32_t syscall(uint32_t id, uint32_t param) {
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register uint32_t a0 asm("a0") = (uint32_t)(param);
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register uint32_t a1 asm("a1");
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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"(a1) // output
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: "r"(a0), "r"(a7) // input
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: "memory"
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);
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return a1;
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}
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#define syscall_cast(id, x) syscall((uint32_t)id, (uint32_t)x)
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#define println(x) syscall_cast(UVM32_SYSCALL_PRINTLN, x)
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#define print(x) syscall_cast(UVM32_SYSCALL_PRINT, x)
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#define printdec(x) syscall_cast(UVM32_SYSCALL_PRINTDEC, x)
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#define printhex(x) syscall_cast(UVM32_SYSCALL_PRINTHEX, x)
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#define millis() syscall_cast(UVM32_SYSCALL_MILLIS, 0)
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#define putc(x) syscall_cast(UVM32_SYSCALL_PUTC, x)
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#define getc() syscall_cast(UVM32_SYSCALL_GETC, 0)
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#define yield() syscall_cast(UVM32_SYSCALL_YIELD, 0)
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#include "uvm32_common_custom.h"
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// provide main, with setup()/loop() flow
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void setup(void);
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bool loop(void);
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#ifndef USE_MAIN
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void main(void) {
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setup();
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while(loop()) {
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yield();
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}
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}
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#endif
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