tools/arch/x86/tools/gen-insn-attr-x86.awk

Source file repositories/reference/linux-study-clean/tools/arch/x86/tools/gen-insn-attr-x86.awk

File Facts

System
Linux kernel
Corpus path
tools/arch/x86/tools/gen-insn-attr-x86.awk
Extension
.awk
Size
13051 bytes
Lines
506
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

function check_awk_implement() {
	if (sprintf("%x", 0) != "0")
		return "Your awk has a printf-format problem."
	return ""
}

# Clear working vars
function clear_vars() {
	delete table
	delete lptable2
	delete lptable1
	delete lptable3
	eid = -1 # escape id
	gid = -1 # group id
	aid = -1 # AVX id
	xopid = -1 # XOP id
	tname = ""
}

BEGIN {
	# Implementation error checking
	awkchecked = check_awk_implement()
	if (awkchecked != "") {
		print "Error: " awkchecked > "/dev/stderr"
		print "Please try to use gawk." > "/dev/stderr"
		exit 1
	}

	# Setup generating tables
	print "/* x86 opcode map generated from x86-opcode-map.txt */"
	print "/* Do not change this code. */\n"
	ggid = 1
	geid = 1
	gaid = 0
	gxopid = 0
	delete etable
	delete gtable
	delete atable
	delete xoptable

	opnd_expr = "^[A-Za-z/]"
	ext_expr = "^\\("
	sep_expr = "^\\|$"
	group_expr = "^Grp[0-9A-Za-z]+"

	imm_expr = "^[IJAOL][a-z]"
	imm_flag["Ib"] = "INAT_MAKE_IMM(INAT_IMM_BYTE)"
	imm_flag["Jb"] = "INAT_MAKE_IMM(INAT_IMM_BYTE)"
	imm_flag["Iw"] = "INAT_MAKE_IMM(INAT_IMM_WORD)"
	imm_flag["Id"] = "INAT_MAKE_IMM(INAT_IMM_DWORD)"
	imm_flag["Iq"] = "INAT_MAKE_IMM(INAT_IMM_QWORD)"
	imm_flag["Ap"] = "INAT_MAKE_IMM(INAT_IMM_PTR)"
	imm_flag["Iz"] = "INAT_MAKE_IMM(INAT_IMM_VWORD32)"
	imm_flag["Jz"] = "INAT_MAKE_IMM(INAT_IMM_VWORD32)"
	imm_flag["Iv"] = "INAT_MAKE_IMM(INAT_IMM_VWORD)"
	imm_flag["Ob"] = "INAT_MOFFSET"
	imm_flag["Ov"] = "INAT_MOFFSET"
	imm_flag["Lx"] = "INAT_MAKE_IMM(INAT_IMM_BYTE)"
	imm_flag["Lo"] = "INAT_MAKE_IMM(INAT_IMM_BYTE)"

	modrm_expr = "^([CDEGMNPQRSUVW/][a-z]+|NTA|T[012])"
	force64_expr = "\\([df]64\\)"
	invalid64_expr = "\\(i64\\)"
	only64_expr = "\\(o64\\)"
	rex_expr = "^((REX(\\.[XRWB]+)+)|(REX$))"
	rex2_expr = "\\(REX2\\)"
	no_rex2_expr = "\\(!REX2\\)"
	fpu_expr = "^ESC" # TODO

	lprefix1_expr = "\\((66|!F3)\\)"

Annotation

Implementation Notes