mirror of
https://github.com/switchbrew/libnx.git
synced 2025-06-21 20:42:44 +02:00
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
#include <string.h>
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#include <sys/iosupport.h>
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#include <sys/time.h>
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#include <sys/lock.h>
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#include <sys/reent.h>
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#include "../internal.h"
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#include "types.h"
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#include "runtime/env.h"
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#include "kernel/mutex.h"
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#include "services/fatal.h"
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#include "result.h"
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void __attribute__((weak)) NORETURN __libnx_exit(int rc);
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extern const u8 __tdata_lma[];
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extern const u8 __tdata_lma_end[];
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extern u8 __tls_start[];
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static struct _reent* __libnx_get_reent(void) {
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ThreadVars* tv = getThreadVars();
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if (tv->magic != THREADVARS_MAGIC)
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fatalSimple(MAKERESULT(Module_Libnx, LibnxError_BadReent));
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return tv->reent;
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}
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void newlibSetup() {
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// Register newlib syscalls
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__syscalls.exit = __libnx_exit;
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__syscalls.getreent = __libnx_get_reent;
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// Register locking syscalls
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__syscalls.lock_init = mutexInit;
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__syscalls.lock_acquire = mutexLock;
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__syscalls.lock_release = mutexUnlock;
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/*
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__syscalls.lock_init_recursive = rmutexInit;
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__syscalls.lock_acquire_recursive = rmutexLock;
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__syscalls.lock_release_recursive = rmutexUnlock;
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*/
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// Initialize thread vars for the main thread
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ThreadVars* tv = getThreadVars();
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tv->magic = THREADVARS_MAGIC;
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tv->thread_ptr = NULL;
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tv->reent = _impure_ptr;
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tv->tls_tp = __tls_start-2*sizeof(void*); // subtract size of Thread Control Block (TCB)
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tv->handle = envGetMainThreadHandle();
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u32 tls_size = __tdata_lma_end - __tdata_lma;
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if (tls_size)
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memcpy(__tls_start, __tdata_lma, tls_size);
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}
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