MOVW	sig+8(FP), R4
	MOVV	info+16(FP), R5
	MOVV	ctx+24(FP), R6
	MOVV	fn+0(FP), R20
	JAL	(R20)
	RET

// func sigtramp(signo, ureg, ctxt unsafe.Pointer)
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$168
	MOVW	R4, (1*8)(R3)
	MOVV	R5, (2*8)(R3)
	MOVV	R6, (3*8)(R3)

	// Save callee-save registers in the case of signal forwarding.
	// Please refer to https://golang.org/issue/31827 .
	SAVE_R22_TO_R31((4*8))

	MOVQ	ctx+24(FP),  DX
	MOVQ	SP, BX		// callee-saved
	ANDQ	$~15, SP	// alignment for x86_64 ABI
	CALL	AX
	MOVQ	BX, SP
	RET

// Called using C ABI.
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME|NOFRAME,$0
	// Transition from C ABI to Go ABI.
	PUSH_REGS_HOST_TO_ABI0()

	// Set up ABIInternal environment: g in R14, cleared X15.
	get_tls(R12)
	MOVQ	g(R12), R14
	PXOR	X15, X15

// license that can be found in the LICENSE file.

#include "go_asm.h"
#include "go_tls.h"
#include "tls_arm64.h"
#include "funcdata.h"
#include "textflag.h"

TEXT runtime·rt0_go(SB),NOSPLIT|TOPFRAME,$0
	// SP = stack; R0 = argc; R1 = argv

	SUB	$32, RSP
	MOVW	R0, 8(RSP) // argc
	MOVD	R1, 16(RSP) // argv

#ifdef TLS_darwin
	// Initialize TLS.
	MOVD	ZR, g // clear g, make sure it's not junk.

	MOVQ	ctx+24(FP),  DX
	MOVQ	SP, BX		// callee-saved
	ANDQ	$~15, SP     // alignment for x86_64 ABI
	CALL	AX
	MOVQ	BX, SP
	RET

// Called using C ABI.
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME|NOFRAME,$0
	// Transition from C ABI to Go ABI.
	PUSH_REGS_HOST_TO_ABI0()

	// Set up ABIInternal environment: g in R14, cleared X15.
	get_tls(R12)
	MOVQ	g(R12), R14
	PXOR	X15, X15

	MOVW	info+8(FP), R1
	MOVW	ctx+12(FP), R2
	MOVW	fn+0(FP), R11
	MOVW	R13, R4
	SUB	$24, R13
	BIC	$0x7, R13 // alignment for ELF ABI
	BL	(R11)
	MOVW	R4, R13
	RET

TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$0
	// Reserve space for callee-save registers and arguments.
	MOVM.DB.W [R4-R11], (R13)
	SUB	$16, R13

	// this might be called in external code context,
	// where g is not set.

	RET

TEXT runtime·sigfwd(SB),NOSPLIT,$0-32
	MOVW	sig+8(FP), R0
	MOVD	info+16(FP), R1
	MOVD	ctx+24(FP), R2
	MOVD	fn+0(FP), R11
	BL	(R11)			// Alignment for ELF ABI?
	RET

TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$192
	// Save callee-save registers in the case of signal forwarding.
	// Please refer to https://golang.org/issue/31827 .
	SAVE_R19_TO_R28(8*4)
	SAVE_F8_TO_F15(8*14)

DEFINE_PPC64X_FUNCDESC(runtime·sigtramp, sigtramp<>)
// cgo isn't supported on ppc64, but we need to supply a cgoSigTramp function.
DEFINE_PPC64X_FUNCDESC(runtime·cgoSigtramp, sigtramp<>)
TEXT sigtramp<>(SB),NOSPLIT|NOFRAME|TOPFRAME,$0
#else
// ppc64le doesn't need function descriptors
// Save callee-save registers in the case of signal forwarding.
// Same as on ARM64 https://golang.org/issue/31827 .
//

	MOV	$0, X10

	RET

TEXT runtime·sigfwd(SB),NOSPLIT,$0-32
	MOVW	sig+8(FP), X10
	MOV	info+16(FP), X11
	MOV	ctx+24(FP), X12
	MOV	fn+0(FP), X5
	JALR	X1, X5
	RET

TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$224
	// Save callee-save registers (X8, X9, X18..X27, F8, F9, F18..F27)
	MOV	X8, (4*8)(X2)
	MOV	X9, (5*8)(X2)
	MOV	X18, (6*8)(X2)
	MOV	X19, (7*8)(X2)
	MOV	X20, (8*8)(X2)
	MOV	X21, (9*8)(X2)

	MOVQ	info+16(FP), SI
	MOVQ	ctx+24(FP),  DX
	MOVQ	SP, BX		// callee-saved
	ANDQ	$~15, SP	// alignment for x86_64 ABI
	CALL	AX
	MOVQ	BX, SP
	RET

// Called using C ABI.
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME|NOFRAME,$0
	// Transition from C ABI to Go ABI.
	PUSH_REGS_HOST_TO_ABI0()

	// Set up ABIInternal environment: g in R14, cleared X15.
	get_tls(R12)
	MOVQ	g(R12), R14
	PXOR	X15, X15

#define NEED_DARWIN_SUPPORT             (AVX512F | AVX512DQ | AVX512CD | AVX512BW | AVX512VL)
#else
#define NEED_OS_SUPPORT_AX V4_OS_SUPPORT_AX
#endif

#endif

TEXT runtime·rt0_go(SB),NOSPLIT|NOFRAME|TOPFRAME,$0
	// copy arguments forward on an even stack
	MOVQ	DI, AX		// argc
	MOVQ	SI, BX		// argv
	SUBQ	$(5*8), SP		// 3args 2auto
	ANDQ	$~15, SP
	MOVQ	AX, 24(SP)
	MOVQ	BX, 32(SP)