// Literal data emission: BYTE, WORD, LONG and QUAD write the immediate
// into the text stream as 1, 2, 4 or 8 little-endian bytes with no opcode
// lookup, truncated to the width rather than range-checked; END is
// accepted and ignored, contributing no bytes and ending nothing.  The
// shapes mirror the runtime's hand-laid markers
// (crypto/internal/boring/sig/sig_amd64.s) and its syscall stubs
// (runtime/sys_linux_amd64.s).

#include "textflag.h"

// func marker()
// A boring/crypto-style marker: a hand-laid forward branch whose skip
// distance is patched at runtime.  One BYTE per statement, as the
// runtime's own file spells it: the semicolon-separated one-liner the
// sys_linux_amd64.s stub uses does not survive gasm fmt, which drops the
// statement separators.
TEXT ·marker(SB), NOSPLIT, $0-0
	BYTE $0xEB
	BYTE $0x1D
	BYTE $0xF4
	BYTE $0x48
	BYTE $0xF4
	BYTE $0x4B
	BYTE $0xC3
	RET

// func stub()
// The sys_linux_amd64.s stub bytes: the sign-extended
// "48 c7 c0 0f 00 00 00" form of MOVQ $rt_sigreturn, AX.
TEXT ·stub(SB), NOSPLIT, $0-0
	BYTE $0x48
	BYTE $0xc7
	BYTE $0xc0
	BYTE $0x0f
	BYTE $0x00
	BYTE $0x00
	BYTE $0x00
	RET

// func words()
// The wider literals, and an END that ends nothing: the WORD after it
// still lands in this function.
TEXT ·words(SB), NOSPLIT, $0-0
	WORD $0x1234
	WORD $-1
	LONG $0x11223344
	LONG $-1
	QUAD $0x1122334455667788
	QUAD $-2
	END
	WORD $0xBEEF
	RET

// func trunc()
// Truncation, not a range check: each literal keeps its low bytes, exactly
// as go tool asm emits them.
TEXT ·trunc(SB), NOSPLIT, $0-0
	BYTE $0x1FF
	WORD $0x12345
	LONG $0x123456789
	QUAD $-2
	RET