3608c2419c
Many Hexagon python scripts call hex_common.get_tagregs(), but only one call site use the full reg structure given by this function. To make the code cleaner, let's make get_tagregs() filter out the unused fields (i.e. 'toss' and 'numregs'), properly removed the unused variables at the call sites. The hex_common.bad_register() function is also adjusted to work exclusively with 'regtype' and 'regid' args. For the single call site that does use toss/numregs, we provide an optional parameter to get_tagregs() which will restore the old full behavior. Suggested-by: Taylor Simpson <tsimpson@quicinc.com> Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com> Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Tested-by: Taylor Simpson <tsimpson@quicinc.com> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com> Message-Id: <3ffd4ccb972879f57f499705c624e8eaba7f8b52.1684939078.git.quic_mathbern@quicinc.com>
402 lines
13 KiB
Python
Executable File
402 lines
13 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
##
|
|
## Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
|
|
##
|
|
## This program is free software; you can redistribute it and/or modify
|
|
## it under the terms of the GNU General Public License as published by
|
|
## the Free Software Foundation; either version 2 of the License, or
|
|
## (at your option) any later version.
|
|
##
|
|
## This program is distributed in the hope that it will be useful,
|
|
## but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
## GNU General Public License for more details.
|
|
##
|
|
## You should have received a copy of the GNU General Public License
|
|
## along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
##
|
|
|
|
import sys
|
|
import re
|
|
import string
|
|
import hex_common
|
|
|
|
|
|
##
|
|
## Helpers for gen_helper_function
|
|
##
|
|
def gen_decl_ea(f):
|
|
f.write(" uint32_t EA;\n")
|
|
|
|
|
|
def gen_helper_return_type(f, regtype, regid, regno):
|
|
if regno > 1:
|
|
f.write(", ")
|
|
f.write("int32_t")
|
|
|
|
|
|
def gen_helper_return_type_pair(f, regtype, regid, regno):
|
|
if regno > 1:
|
|
f.write(", ")
|
|
f.write("int64_t")
|
|
|
|
|
|
def gen_helper_arg(f, regtype, regid, regno):
|
|
if regno > 0:
|
|
f.write(", ")
|
|
f.write(f"int32_t {regtype}{regid}V")
|
|
|
|
|
|
def gen_helper_arg_new(f, regtype, regid, regno):
|
|
if regno >= 0:
|
|
f.write(", ")
|
|
f.write(f"int32_t {regtype}{regid}N")
|
|
|
|
|
|
def gen_helper_arg_pair(f, regtype, regid, regno):
|
|
if regno >= 0:
|
|
f.write(", ")
|
|
f.write(f"int64_t {regtype}{regid}V")
|
|
|
|
|
|
def gen_helper_arg_ext(f, regtype, regid, regno):
|
|
if regno > 0:
|
|
f.write(", ")
|
|
f.write(f"void *{regtype}{regid}V_void")
|
|
|
|
|
|
def gen_helper_arg_ext_pair(f, regtype, regid, regno):
|
|
if regno > 0:
|
|
f.write(", ")
|
|
f.write(f"void *{regtype}{regid}V_void")
|
|
|
|
|
|
def gen_helper_arg_opn(f, regtype, regid, i, tag):
|
|
if hex_common.is_pair(regid):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
gen_helper_arg_ext_pair(f, regtype, regid, i)
|
|
else:
|
|
gen_helper_arg_pair(f, regtype, regid, i)
|
|
elif hex_common.is_single(regid):
|
|
if hex_common.is_old_val(regtype, regid, tag):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
gen_helper_arg_ext(f, regtype, regid, i)
|
|
else:
|
|
gen_helper_arg(f, regtype, regid, i)
|
|
elif hex_common.is_new_val(regtype, regid, tag):
|
|
gen_helper_arg_new(f, regtype, regid, i)
|
|
else:
|
|
hex_common.bad_register(regtype, regid)
|
|
else:
|
|
hex_common.bad_register(regtype, regid)
|
|
|
|
|
|
def gen_helper_arg_imm(f, immlett):
|
|
f.write(f", int32_t {hex_common.imm_name(immlett)}")
|
|
|
|
|
|
def gen_helper_dest_decl(f, regtype, regid, regno, subfield=""):
|
|
f.write(f" int32_t {regtype}{regid}V{subfield} = 0;\n")
|
|
|
|
|
|
def gen_helper_dest_decl_pair(f, regtype, regid, regno, subfield=""):
|
|
f.write(f" int64_t {regtype}{regid}V{subfield} = 0;\n")
|
|
|
|
|
|
def gen_helper_dest_decl_ext(f, regtype, regid):
|
|
if regtype == "Q":
|
|
f.write(
|
|
f" /* {regtype}{regid}V is *(MMQReg *)" f"({regtype}{regid}V_void) */\n"
|
|
)
|
|
else:
|
|
f.write(
|
|
f" /* {regtype}{regid}V is *(MMVector *)"
|
|
f"({regtype}{regid}V_void) */\n"
|
|
)
|
|
|
|
|
|
def gen_helper_dest_decl_ext_pair(f, regtype, regid, regno):
|
|
f.write(
|
|
f" /* {regtype}{regid}V is *(MMVectorPair *))"
|
|
f"{regtype}{regid}V_void) */\n"
|
|
)
|
|
|
|
|
|
def gen_helper_dest_decl_opn(f, regtype, regid, i):
|
|
if hex_common.is_pair(regid):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
gen_helper_dest_decl_ext_pair(f, regtype, regid, i)
|
|
else:
|
|
gen_helper_dest_decl_pair(f, regtype, regid, i)
|
|
elif hex_common.is_single(regid):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
gen_helper_dest_decl_ext(f, regtype, regid)
|
|
else:
|
|
gen_helper_dest_decl(f, regtype, regid, i)
|
|
else:
|
|
hex_common.bad_register(regtype, regid)
|
|
|
|
|
|
def gen_helper_src_var_ext(f, regtype, regid):
|
|
if regtype == "Q":
|
|
f.write(
|
|
f" /* {regtype}{regid}V is *(MMQReg *)" f"({regtype}{regid}V_void) */\n"
|
|
)
|
|
else:
|
|
f.write(
|
|
f" /* {regtype}{regid}V is *(MMVector *)"
|
|
f"({regtype}{regid}V_void) */\n"
|
|
)
|
|
|
|
|
|
def gen_helper_src_var_ext_pair(f, regtype, regid, regno):
|
|
f.write(
|
|
f" /* {regtype}{regid}V{regno} is *(MMVectorPair *)"
|
|
f"({regtype}{regid}V{regno}_void) */\n"
|
|
)
|
|
|
|
|
|
def gen_helper_return(f, regtype, regid, regno):
|
|
f.write(f" return {regtype}{regid}V;\n")
|
|
|
|
|
|
def gen_helper_return_pair(f, regtype, regid, regno):
|
|
f.write(f" return {regtype}{regid}V;\n")
|
|
|
|
|
|
def gen_helper_dst_write_ext(f, regtype, regid):
|
|
return
|
|
|
|
|
|
def gen_helper_dst_write_ext_pair(f, regtype, regid):
|
|
return
|
|
|
|
|
|
def gen_helper_return_opn(f, regtype, regid, i):
|
|
if hex_common.is_pair(regid):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
gen_helper_dst_write_ext_pair(f, regtype, regid)
|
|
else:
|
|
gen_helper_return_pair(f, regtype, regid, i)
|
|
elif hex_common.is_single(regid):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
gen_helper_dst_write_ext(f, regtype, regid)
|
|
else:
|
|
gen_helper_return(f, regtype, regid, i)
|
|
else:
|
|
hex_common.bad_register(regtype, regid)
|
|
|
|
|
|
##
|
|
## Generate the TCG code to call the helper
|
|
## For A2_add: Rd32=add(Rs32,Rt32), { RdV=RsV+RtV;}
|
|
## We produce:
|
|
## int32_t HELPER(A2_add)(CPUHexagonState *env, int32_t RsV, int32_t RtV)
|
|
## {
|
|
## uint32_t slot __attribute__(unused)) = 4;
|
|
## int32_t RdV = 0;
|
|
## { RdV=RsV+RtV;}
|
|
## COUNT_HELPER(A2_add);
|
|
## return RdV;
|
|
## }
|
|
##
|
|
def gen_helper_function(f, tag, tagregs, tagimms):
|
|
regs = tagregs[tag]
|
|
imms = tagimms[tag]
|
|
|
|
numresults = 0
|
|
numscalarresults = 0
|
|
numscalarreadwrite = 0
|
|
for regtype, regid in regs:
|
|
if hex_common.is_written(regid):
|
|
numresults += 1
|
|
if hex_common.is_scalar_reg(regtype):
|
|
numscalarresults += 1
|
|
if hex_common.is_readwrite(regid):
|
|
if hex_common.is_scalar_reg(regtype):
|
|
numscalarreadwrite += 1
|
|
|
|
if numscalarresults > 1:
|
|
## The helper is bogus when there is more than one result
|
|
f.write(
|
|
f"void HELPER({tag})(CPUHexagonState *env) " f"{{ BOGUS_HELPER({tag}); }}\n"
|
|
)
|
|
else:
|
|
## The return type of the function is the type of the destination
|
|
## register (if scalar)
|
|
i = 0
|
|
for regtype, regid in regs:
|
|
if hex_common.is_written(regid):
|
|
if hex_common.is_pair(regid):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
continue
|
|
else:
|
|
gen_helper_return_type_pair(f, regtype, regid, i)
|
|
elif hex_common.is_single(regid):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
continue
|
|
else:
|
|
gen_helper_return_type(f, regtype, regid, i)
|
|
else:
|
|
hex_common.bad_register(regtype, regid)
|
|
i += 1
|
|
|
|
if numscalarresults == 0:
|
|
f.write("void")
|
|
f.write(f" HELPER({tag})(CPUHexagonState *env")
|
|
|
|
## Arguments include the vector destination operands
|
|
i = 1
|
|
for regtype, regid in regs:
|
|
if hex_common.is_written(regid):
|
|
if hex_common.is_pair(regid):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
gen_helper_arg_ext_pair(f, regtype, regid, i)
|
|
else:
|
|
continue
|
|
elif hex_common.is_single(regid):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
gen_helper_arg_ext(f, regtype, regid, i)
|
|
else:
|
|
# This is the return value of the function
|
|
continue
|
|
else:
|
|
hex_common.bad_register(regtype, regid)
|
|
i += 1
|
|
|
|
## For conditional instructions, we pass in the destination register
|
|
if "A_CONDEXEC" in hex_common.attribdict[tag]:
|
|
for regtype, regid in regs:
|
|
if hex_common.is_writeonly(regid) and not hex_common.is_hvx_reg(
|
|
regtype
|
|
):
|
|
gen_helper_arg_opn(f, regtype, regid, i, tag)
|
|
i += 1
|
|
|
|
## Arguments to the helper function are the source regs and immediates
|
|
for regtype, regid in regs:
|
|
if hex_common.is_read(regid):
|
|
if hex_common.is_hvx_reg(regtype) and hex_common.is_readwrite(regid):
|
|
continue
|
|
gen_helper_arg_opn(f, regtype, regid, i, tag)
|
|
i += 1
|
|
for immlett, bits, immshift in imms:
|
|
gen_helper_arg_imm(f, immlett)
|
|
i += 1
|
|
|
|
if hex_common.need_pkt_has_multi_cof(tag):
|
|
f.write(", uint32_t pkt_has_multi_cof")
|
|
if (hex_common.need_pkt_need_commit(tag)):
|
|
f.write(", uint32_t pkt_need_commit")
|
|
|
|
if hex_common.need_PC(tag):
|
|
if i > 0:
|
|
f.write(", ")
|
|
f.write("target_ulong PC")
|
|
i += 1
|
|
if hex_common.helper_needs_next_PC(tag):
|
|
if i > 0:
|
|
f.write(", ")
|
|
f.write("target_ulong next_PC")
|
|
i += 1
|
|
if hex_common.need_slot(tag):
|
|
if i > 0:
|
|
f.write(", ")
|
|
f.write("uint32_t slotval")
|
|
i += 1
|
|
if hex_common.need_part1(tag):
|
|
if i > 0:
|
|
f.write(", ")
|
|
f.write("uint32_t part1")
|
|
f.write(")\n{\n")
|
|
if hex_common.need_ea(tag):
|
|
gen_decl_ea(f)
|
|
## Declare the return variable
|
|
i = 0
|
|
if "A_CONDEXEC" not in hex_common.attribdict[tag]:
|
|
for regtype, regid in regs:
|
|
if hex_common.is_writeonly(regid):
|
|
gen_helper_dest_decl_opn(f, regtype, regid, i)
|
|
i += 1
|
|
|
|
for regtype, regid in regs:
|
|
if hex_common.is_read(regid):
|
|
if hex_common.is_pair(regid):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
gen_helper_src_var_ext_pair(f, regtype, regid, i)
|
|
elif hex_common.is_single(regid):
|
|
if hex_common.is_hvx_reg(regtype):
|
|
gen_helper_src_var_ext(f, regtype, regid)
|
|
else:
|
|
hex_common.bad_register(regtype, regid)
|
|
|
|
if hex_common.need_slot(tag):
|
|
if "A_LOAD" in hex_common.attribdict[tag]:
|
|
f.write(" bool pkt_has_store_s1 = slotval & 0x1;\n")
|
|
f.write(" uint32_t slot = slotval >> 1;\n")
|
|
|
|
if "A_FPOP" in hex_common.attribdict[tag]:
|
|
f.write(" arch_fpop_start(env);\n")
|
|
|
|
f.write(f" {hex_common.semdict[tag]}\n")
|
|
|
|
if "A_FPOP" in hex_common.attribdict[tag]:
|
|
f.write(" arch_fpop_end(env);\n")
|
|
|
|
## Save/return the return variable
|
|
for regtype, regid in regs:
|
|
if hex_common.is_written(regid):
|
|
gen_helper_return_opn(f, regtype, regid, i)
|
|
f.write("}\n\n")
|
|
## End of the helper definition
|
|
|
|
|
|
def main():
|
|
hex_common.read_semantics_file(sys.argv[1])
|
|
hex_common.read_attribs_file(sys.argv[2])
|
|
hex_common.read_overrides_file(sys.argv[3])
|
|
hex_common.read_overrides_file(sys.argv[4])
|
|
## Whether or not idef-parser is enabled is
|
|
## determined by the number of arguments to
|
|
## this script:
|
|
##
|
|
## 5 args. -> not enabled,
|
|
## 6 args. -> idef-parser enabled.
|
|
##
|
|
## The 6:th arg. then holds a list of the successfully
|
|
## parsed instructions.
|
|
is_idef_parser_enabled = len(sys.argv) > 6
|
|
if is_idef_parser_enabled:
|
|
hex_common.read_idef_parser_enabled_file(sys.argv[5])
|
|
hex_common.calculate_attribs()
|
|
tagregs = hex_common.get_tagregs()
|
|
tagimms = hex_common.get_tagimms()
|
|
|
|
output_file = sys.argv[-1]
|
|
with open(output_file, "w") as f:
|
|
for tag in hex_common.tags:
|
|
## Skip the priv instructions
|
|
if "A_PRIV" in hex_common.attribdict[tag]:
|
|
continue
|
|
## Skip the guest instructions
|
|
if "A_GUEST" in hex_common.attribdict[tag]:
|
|
continue
|
|
## Skip the diag instructions
|
|
if tag == "Y6_diag":
|
|
continue
|
|
if tag == "Y6_diag0":
|
|
continue
|
|
if tag == "Y6_diag1":
|
|
continue
|
|
if hex_common.skip_qemu_helper(tag):
|
|
continue
|
|
if hex_common.is_idef_parser_enabled(tag):
|
|
continue
|
|
|
|
gen_helper_function(f, tag, tagregs, tagimms)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|