/* POSIX userspace implementation of libluna hooks. */

#include <luna/Attributes.h>
#include <luna/Result.h>
#include <luna/SourceLocation.h>

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/mman.h>

_weak [[noreturn]] bool __check_failed(SourceLocation location, const char* expr)
{
    fprintf(stderr, "Check failed at %s:%d in %s: %s\n", location.file(), location.line(), location.function(), expr);
    abort();
}

void debug_log_impl(const char* format, va_list ap)
{
    vfprintf(stderr, format, ap);
    fputc('\n', stderr);
}

Result<void*> allocate_pages_impl(usize count)
{
    void* rc = mmap(nullptr, count * PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
    if (rc == MAP_FAILED) { return err(errno); }
    return rc;
}

Result<void> release_pages_impl(void* address, usize count)
{
    int rc = munmap(address, count * PAGE_SIZE);
    if (rc < 0) { return err(errno); }
    return {};
}