#include <signal.h>
#include <string.h>
#include "libcgo.h"
#include "libcgo_unix.h"

#ifdef ARM_TP_ADDRESS
// ARM_TP_ADDRESS is (ARM_VECTORS_HIGH + 0x1000) or 0xffff1000
// and is known to runtime.read_tls_fallback. Verify it with
// cpp.
#if ARM_TP_ADDRESS != 0xffff1000
#error Wrong ARM_TP_ADDRESS!
#endif
#endif

static void* threadentry(void*);
static void (*setg_gcc)(void*);

void

func udiv()
func _div()
func _divu()
func _mod()
func _modu()

// Called from assembly only; declared for go vet.
func usplitR0()
func load_g()
func save_g()
func emptyfunc()
func _initcgo()
func read_tls_fallback()

//go:noescape
func asmcgocall_no_g(fn, arg unsafe.Pointer)

// getfp returns the frame pointer register of its caller or 0 if not implemented.
// TODO: Make this a compiler intrinsic

// Returns with g in R0.
TEXT runtime·save_g(SB),NOSPLIT,$0
	// If the host does not support MRC the linker will replace it with
	// a call to runtime.read_tls_fallback which jumps to __kuser_get_tls.
	// The replacement function saves LR in R11 over the call to read_tls_fallback.
	// To make stack unwinding work, this function should NOT be marked as NOFRAME,
	// as it may contain a call, which clobbers LR even just temporarily.

			}

			if buildcfg.GOARM.Version < 7 {
				// Replace it with BL runtime.read_tls_fallback(SB) for ARM CPUs that lack the tls extension.
				if progedit_tlsfallback == nil {
					progedit_tlsfallback = ctxt.Lookup("runtime.read_tls_fallback")
				}

				// MOVW	LR, R11
				p.As = AMOVW

				p.From.Type = obj.TYPE_REG
				p.From.Reg = REGLINK