394 строки
9.6 KiB
Awk
394 строки
9.6 KiB
Awk
#!/bin/awk -f
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
# gen-insn-attr-x86.awk: Instruction attribute table generator
|
|
# Written by Masami Hiramatsu <mhiramat@redhat.com>
|
|
#
|
|
# Usage: awk -f gen-insn-attr-x86.awk x86-opcode-map.txt > inat-tables.c
|
|
|
|
# Awk implementation sanity check
|
|
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
|
|
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
|
|
delete etable
|
|
delete gtable
|
|
delete atable
|
|
|
|
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)"
|
|
|
|
modrm_expr = "^([CDEGMNPQRSUVW/][a-z]+|NTA|T[012])"
|
|
force64_expr = "\\([df]64\\)"
|
|
rex_expr = "^REX(\\.[XRWB]+)*"
|
|
fpu_expr = "^ESC" # TODO
|
|
|
|
lprefix1_expr = "\\((66|!F3)\\)"
|
|
lprefix2_expr = "\\(F3\\)"
|
|
lprefix3_expr = "\\((F2|!F3|66\\&F2)\\)"
|
|
lprefix_expr = "\\((66|F2|F3)\\)"
|
|
max_lprefix = 4
|
|
|
|
# All opcodes starting with lower-case 'v', 'k' or with (v1) superscript
|
|
# accepts VEX prefix
|
|
vexok_opcode_expr = "^[vk].*"
|
|
vexok_expr = "\\(v1\\)"
|
|
# All opcodes with (v) superscript supports *only* VEX prefix
|
|
vexonly_expr = "\\(v\\)"
|
|
# All opcodes with (ev) superscript supports *only* EVEX prefix
|
|
evexonly_expr = "\\(ev\\)"
|
|
|
|
prefix_expr = "\\(Prefix\\)"
|
|
prefix_num["Operand-Size"] = "INAT_PFX_OPNDSZ"
|
|
prefix_num["REPNE"] = "INAT_PFX_REPNE"
|
|
prefix_num["REP/REPE"] = "INAT_PFX_REPE"
|
|
prefix_num["XACQUIRE"] = "INAT_PFX_REPNE"
|
|
prefix_num["XRELEASE"] = "INAT_PFX_REPE"
|
|
prefix_num["LOCK"] = "INAT_PFX_LOCK"
|
|
prefix_num["SEG=CS"] = "INAT_PFX_CS"
|
|
prefix_num["SEG=DS"] = "INAT_PFX_DS"
|
|
prefix_num["SEG=ES"] = "INAT_PFX_ES"
|
|
prefix_num["SEG=FS"] = "INAT_PFX_FS"
|
|
prefix_num["SEG=GS"] = "INAT_PFX_GS"
|
|
prefix_num["SEG=SS"] = "INAT_PFX_SS"
|
|
prefix_num["Address-Size"] = "INAT_PFX_ADDRSZ"
|
|
prefix_num["VEX+1byte"] = "INAT_PFX_VEX2"
|
|
prefix_num["VEX+2byte"] = "INAT_PFX_VEX3"
|
|
prefix_num["EVEX"] = "INAT_PFX_EVEX"
|
|
|
|
clear_vars()
|
|
}
|
|
|
|
function semantic_error(msg) {
|
|
print "Semantic error at " NR ": " msg > "/dev/stderr"
|
|
exit 1
|
|
}
|
|
|
|
function debug(msg) {
|
|
print "DEBUG: " msg
|
|
}
|
|
|
|
function array_size(arr, i,c) {
|
|
c = 0
|
|
for (i in arr)
|
|
c++
|
|
return c
|
|
}
|
|
|
|
/^Table:/ {
|
|
print "/* " $0 " */"
|
|
if (tname != "")
|
|
semantic_error("Hit Table: before EndTable:.");
|
|
}
|
|
|
|
/^Referrer:/ {
|
|
if (NF != 1) {
|
|
# escape opcode table
|
|
ref = ""
|
|
for (i = 2; i <= NF; i++)
|
|
ref = ref $i
|
|
eid = escape[ref]
|
|
tname = sprintf("inat_escape_table_%d", eid)
|
|
}
|
|
}
|
|
|
|
/^AVXcode:/ {
|
|
if (NF != 1) {
|
|
# AVX/escape opcode table
|
|
aid = $2
|
|
if (gaid <= aid)
|
|
gaid = aid + 1
|
|
if (tname == "") # AVX only opcode table
|
|
tname = sprintf("inat_avx_table_%d", $2)
|
|
}
|
|
if (aid == -1 && eid == -1) # primary opcode table
|
|
tname = "inat_primary_table"
|
|
}
|
|
|
|
/^GrpTable:/ {
|
|
print "/* " $0 " */"
|
|
if (!($2 in group))
|
|
semantic_error("No group: " $2 )
|
|
gid = group[$2]
|
|
tname = "inat_group_table_" gid
|
|
}
|
|
|
|
function print_table(tbl,name,fmt,n)
|
|
{
|
|
print "const insn_attr_t " name " = {"
|
|
for (i = 0; i < n; i++) {
|
|
id = sprintf(fmt, i)
|
|
if (tbl[id])
|
|
print " [" id "] = " tbl[id] ","
|
|
}
|
|
print "};"
|
|
}
|
|
|
|
/^EndTable/ {
|
|
if (gid != -1) {
|
|
# print group tables
|
|
if (array_size(table) != 0) {
|
|
print_table(table, tname "[INAT_GROUP_TABLE_SIZE]",
|
|
"0x%x", 8)
|
|
gtable[gid,0] = tname
|
|
}
|
|
if (array_size(lptable1) != 0) {
|
|
print_table(lptable1, tname "_1[INAT_GROUP_TABLE_SIZE]",
|
|
"0x%x", 8)
|
|
gtable[gid,1] = tname "_1"
|
|
}
|
|
if (array_size(lptable2) != 0) {
|
|
print_table(lptable2, tname "_2[INAT_GROUP_TABLE_SIZE]",
|
|
"0x%x", 8)
|
|
gtable[gid,2] = tname "_2"
|
|
}
|
|
if (array_size(lptable3) != 0) {
|
|
print_table(lptable3, tname "_3[INAT_GROUP_TABLE_SIZE]",
|
|
"0x%x", 8)
|
|
gtable[gid,3] = tname "_3"
|
|
}
|
|
} else {
|
|
# print primary/escaped tables
|
|
if (array_size(table) != 0) {
|
|
print_table(table, tname "[INAT_OPCODE_TABLE_SIZE]",
|
|
"0x%02x", 256)
|
|
etable[eid,0] = tname
|
|
if (aid >= 0)
|
|
atable[aid,0] = tname
|
|
}
|
|
if (array_size(lptable1) != 0) {
|
|
print_table(lptable1,tname "_1[INAT_OPCODE_TABLE_SIZE]",
|
|
"0x%02x", 256)
|
|
etable[eid,1] = tname "_1"
|
|
if (aid >= 0)
|
|
atable[aid,1] = tname "_1"
|
|
}
|
|
if (array_size(lptable2) != 0) {
|
|
print_table(lptable2,tname "_2[INAT_OPCODE_TABLE_SIZE]",
|
|
"0x%02x", 256)
|
|
etable[eid,2] = tname "_2"
|
|
if (aid >= 0)
|
|
atable[aid,2] = tname "_2"
|
|
}
|
|
if (array_size(lptable3) != 0) {
|
|
print_table(lptable3,tname "_3[INAT_OPCODE_TABLE_SIZE]",
|
|
"0x%02x", 256)
|
|
etable[eid,3] = tname "_3"
|
|
if (aid >= 0)
|
|
atable[aid,3] = tname "_3"
|
|
}
|
|
}
|
|
print ""
|
|
clear_vars()
|
|
}
|
|
|
|
function add_flags(old,new) {
|
|
if (old && new)
|
|
return old " | " new
|
|
else if (old)
|
|
return old
|
|
else
|
|
return new
|
|
}
|
|
|
|
# convert operands to flags.
|
|
function convert_operands(count,opnd, i,j,imm,mod)
|
|
{
|
|
imm = null
|
|
mod = null
|
|
for (j = 1; j <= count; j++) {
|
|
i = opnd[j]
|
|
if (match(i, imm_expr) == 1) {
|
|
if (!imm_flag[i])
|
|
semantic_error("Unknown imm opnd: " i)
|
|
if (imm) {
|
|
if (i != "Ib")
|
|
semantic_error("Second IMM error")
|
|
imm = add_flags(imm, "INAT_SCNDIMM")
|
|
} else
|
|
imm = imm_flag[i]
|
|
} else if (match(i, modrm_expr))
|
|
mod = "INAT_MODRM"
|
|
}
|
|
return add_flags(imm, mod)
|
|
}
|
|
|
|
/^[0-9a-f]+\:/ {
|
|
if (NR == 1)
|
|
next
|
|
# get index
|
|
idx = "0x" substr($1, 1, index($1,":") - 1)
|
|
if (idx in table)
|
|
semantic_error("Redefine " idx " in " tname)
|
|
|
|
# check if escaped opcode
|
|
if ("escape" == $2) {
|
|
if ($3 != "#")
|
|
semantic_error("No escaped name")
|
|
ref = ""
|
|
for (i = 4; i <= NF; i++)
|
|
ref = ref $i
|
|
if (ref in escape)
|
|
semantic_error("Redefine escape (" ref ")")
|
|
escape[ref] = geid
|
|
geid++
|
|
table[idx] = "INAT_MAKE_ESCAPE(" escape[ref] ")"
|
|
next
|
|
}
|
|
|
|
variant = null
|
|
# converts
|
|
i = 2
|
|
while (i <= NF) {
|
|
opcode = $(i++)
|
|
delete opnds
|
|
ext = null
|
|
flags = null
|
|
opnd = null
|
|
# parse one opcode
|
|
if (match($i, opnd_expr)) {
|
|
opnd = $i
|
|
count = split($(i++), opnds, ",")
|
|
flags = convert_operands(count, opnds)
|
|
}
|
|
if (match($i, ext_expr))
|
|
ext = $(i++)
|
|
if (match($i, sep_expr))
|
|
i++
|
|
else if (i < NF)
|
|
semantic_error($i " is not a separator")
|
|
|
|
# check if group opcode
|
|
if (match(opcode, group_expr)) {
|
|
if (!(opcode in group)) {
|
|
group[opcode] = ggid
|
|
ggid++
|
|
}
|
|
flags = add_flags(flags, "INAT_MAKE_GROUP(" group[opcode] ")")
|
|
}
|
|
# check force(or default) 64bit
|
|
if (match(ext, force64_expr))
|
|
flags = add_flags(flags, "INAT_FORCE64")
|
|
|
|
# check REX prefix
|
|
if (match(opcode, rex_expr))
|
|
flags = add_flags(flags, "INAT_MAKE_PREFIX(INAT_PFX_REX)")
|
|
|
|
# check coprocessor escape : TODO
|
|
if (match(opcode, fpu_expr))
|
|
flags = add_flags(flags, "INAT_MODRM")
|
|
|
|
# check VEX codes
|
|
if (match(ext, evexonly_expr))
|
|
flags = add_flags(flags, "INAT_VEXOK | INAT_EVEXONLY")
|
|
else if (match(ext, vexonly_expr))
|
|
flags = add_flags(flags, "INAT_VEXOK | INAT_VEXONLY")
|
|
else if (match(ext, vexok_expr) || match(opcode, vexok_opcode_expr))
|
|
flags = add_flags(flags, "INAT_VEXOK")
|
|
|
|
# check prefixes
|
|
if (match(ext, prefix_expr)) {
|
|
if (!prefix_num[opcode])
|
|
semantic_error("Unknown prefix: " opcode)
|
|
flags = add_flags(flags, "INAT_MAKE_PREFIX(" prefix_num[opcode] ")")
|
|
}
|
|
if (length(flags) == 0)
|
|
continue
|
|
# check if last prefix
|
|
if (match(ext, lprefix1_expr)) {
|
|
lptable1[idx] = add_flags(lptable1[idx],flags)
|
|
variant = "INAT_VARIANT"
|
|
}
|
|
if (match(ext, lprefix2_expr)) {
|
|
lptable2[idx] = add_flags(lptable2[idx],flags)
|
|
variant = "INAT_VARIANT"
|
|
}
|
|
if (match(ext, lprefix3_expr)) {
|
|
lptable3[idx] = add_flags(lptable3[idx],flags)
|
|
variant = "INAT_VARIANT"
|
|
}
|
|
if (!match(ext, lprefix_expr)){
|
|
table[idx] = add_flags(table[idx],flags)
|
|
}
|
|
}
|
|
if (variant)
|
|
table[idx] = add_flags(table[idx],variant)
|
|
}
|
|
|
|
END {
|
|
if (awkchecked != "")
|
|
exit 1
|
|
# print escape opcode map's array
|
|
print "/* Escape opcode map array */"
|
|
print "const insn_attr_t * const inat_escape_tables[INAT_ESC_MAX + 1]" \
|
|
"[INAT_LSTPFX_MAX + 1] = {"
|
|
for (i = 0; i < geid; i++)
|
|
for (j = 0; j < max_lprefix; j++)
|
|
if (etable[i,j])
|
|
print " ["i"]["j"] = "etable[i,j]","
|
|
print "};\n"
|
|
# print group opcode map's array
|
|
print "/* Group opcode map array */"
|
|
print "const insn_attr_t * const inat_group_tables[INAT_GRP_MAX + 1]"\
|
|
"[INAT_LSTPFX_MAX + 1] = {"
|
|
for (i = 0; i < ggid; i++)
|
|
for (j = 0; j < max_lprefix; j++)
|
|
if (gtable[i,j])
|
|
print " ["i"]["j"] = "gtable[i,j]","
|
|
print "};\n"
|
|
# print AVX opcode map's array
|
|
print "/* AVX opcode map array */"
|
|
print "const insn_attr_t * const inat_avx_tables[X86_VEX_M_MAX + 1]"\
|
|
"[INAT_LSTPFX_MAX + 1] = {"
|
|
for (i = 0; i < gaid; i++)
|
|
for (j = 0; j < max_lprefix; j++)
|
|
if (atable[i,j])
|
|
print " ["i"]["j"] = "atable[i,j]","
|
|
print "};"
|
|
}
|
|
|