artiq/soc/runtime/symbols.c

#include <string.h>

#include "elf_loader.h"
#include "corecom.h"
#include "gpio.h"
#include "rtio.h"
#include "dds.h"
#include "symbols.h"

static const struct symbol syscalls[] = {
    {"rpc", rpc},
    {"gpio_set", gpio_set},
    {"rtio_oe", rtio_oe},
    {"rtio_set", rtio_set},
    {"rtio_replace", rtio_replace},
    {"rtio_sync", rtio_sync},
    {"rtio_get", rtio_get},
    {"dds_program", dds_program},
    {NULL, NULL}
};

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wimplicit-int"
extern __divsi3, __modsi3, __ledf2, __gedf2, __unorddf2, __negsf2, __negdf2,
    __addsf3, __subsf3, __mulsf3, __divsf3, __lshrdi3, __muldi3, __divdi3,
    __ashldi3, __ashrdi3, __udivmoddi4, __floatsisf, __floatunsisf, __fixsfsi,
    __fixunssfsi, __adddf3, __subdf3, __muldf3, __divdf3, __floatsidf,
    __floatunsidf, __floatdidf, __fixdfsi, __fixunsdfsi, __clzsi2, __ctzsi2,
    __udivdi3, __umoddi3, __moddi3;
#pragma GCC diagnostic pop

static const struct symbol compiler_rt[] = {
    {"divsi3", &__divsi3},
    {"modsi3", &__modsi3},
    {"ledf2", &__ledf2},
    {"gedf2", &__gedf2},
    {"unorddf2", &__gedf2},
    {"negsf2", &__negsf2},
    {"negdf2", &__negdf2},
    {"addsf3", &__addsf3},
    {"subsf3", &__subsf3},
    {"mulsf3", &__mulsf3},
    {"divsf3", &__divsf3},
    {"lshrdi3", &__lshrdi3},
    {"muldi3", &__muldi3},
    {"divdi3", &__divdi3},
    {"ashldi3", &__ashldi3},
    {"ashrdi3", &__ashrdi3},
    {"udivmoddi4", &__udivmoddi4},
    {"floatsisf", &__floatsisf},
    {"floatunsisf", &__floatunsisf},
    {"fixsfsi", &__fixsfsi},
    {"fixunssfsi", &__fixunssfsi},
    {"adddf3", &__adddf3},
    {"subdf3", &__subdf3},
    {"muldf3", &__muldf3},
    {"divdf3", &__divdf3},
    {"floatsidf", &__floatsidf},
    {"floatunsidf", &__floatunsidf},
    {"floatdidf", &__floatdidf},
    {"fixdfsi", &__fixdfsi},
    {"fixunsdfsi", &__fixunsdfsi},
    {"clzsi2", &__clzsi2},
    {"ctzsi2", &__ctzsi2},
    {"udivdi3", &__udivdi3},
    {"umoddi3", &__umoddi3},
    {"moddi3", &__moddi3},
    {NULL, NULL}
};

void *resolve_symbol(const char *name)
{
    if(strncmp(name, "__", 2) != 0)
        return NULL;
    name += 2;
    if(strncmp(name, "syscall_", 8) == 0)
        return find_symbol(syscalls, name + 8);
    return find_symbol(compiler_rt, name);
}