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Convert openrisc to decodetree.py 

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Merge remote-tracking branch 'remotes/rth/tags/tgt-openrisc-pull-request' into staging

Convert openrisc to decodetree.py

# gpg: Signature made Mon 14 May 2018 23:25:40 BST
# gpg:                using RSA key 64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/tgt-openrisc-pull-request:
  target/openrisc: Merge disas_openrisc_insn
  target/openrisc: Convert dec_float
  target/openrisc: Convert dec_compi
  target/openrisc: Convert dec_comp
  target/openrisc: Convert dec_M
  target/openrisc: Convert dec_logic
  target/openrisc: Convert dec_mac
  target/openrisc: Convert dec_calc
  target/openrisc: Convert remainder of dec_misc insns
  target/openrisc: Convert memory insns
  target/openrisc: Convert branch insns
  target/openrisc: Start conversion to decodetree.py
  target-openrisc: Write back result before FPE exception

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2018-05-15 11:11:36 +01:00
parent f39ddb3a08 c7b6f54bf8
commit 46cc2fc4f5
5 changed files with 1086 additions and 1187 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
target/openrisc/Makefile.objs
View File

@ -3,3 +3,12 @@ obj-y += cpu.o exception.o interrupt.o mmu.o translate.o
obj-y += exception_helper.o fpu_helper.o \
interrupt_helper.o mmu_helper.o sys_helper.o
obj-y += gdbstub.o
DECODETREE = $(SRC_PATH)/scripts/decodetree.py
target/openrisc/decode.inc.c: \
$(SRC_PATH)/target/openrisc/insns.decode $(DECODETREE)
$(call quiet-command,\
$(PYTHON) $(DECODETREE) -o $@ $<, "GEN", $(TARGET_DIR)$@)
target/openrisc/translate.o: target/openrisc/decode.inc.c

250
target/openrisc/fpu_helper.c
View File

@ -24,121 +24,70 @@
#include "exception.h"
#include "fpu/softfloat.h"
static inline uint32_t ieee_ex_to_openrisc(OpenRISCCPU *cpu, int fexcp)
static int ieee_ex_to_openrisc(int fexcp)
{
int ret = 0;
if (fexcp) {
if (fexcp & float_flag_invalid) {
cpu->env.fpcsr |= FPCSR_IVF;
ret = 1;
}
if (fexcp & float_flag_overflow) {
cpu->env.fpcsr |= FPCSR_OVF;
ret = 1;
}
if (fexcp & float_flag_underflow) {
cpu->env.fpcsr |= FPCSR_UNF;
ret = 1;
}
if (fexcp & float_flag_divbyzero) {
cpu->env.fpcsr |= FPCSR_DZF;
ret = 1;
}
if (fexcp & float_flag_inexact) {
cpu->env.fpcsr |= FPCSR_IXF;
ret = 1;
}
if (fexcp & float_flag_invalid) {
ret |= FPCSR_IVF;
}
if (fexcp & float_flag_overflow) {
ret |= FPCSR_OVF;
}
if (fexcp & float_flag_underflow) {
ret |= FPCSR_UNF;
}
if (fexcp & float_flag_divbyzero) {
ret |= FPCSR_DZF;
}
if (fexcp & float_flag_inexact) {
ret |= FPCSR_IXF;
}
return ret;
}
static inline void update_fpcsr(OpenRISCCPU *cpu)
void HELPER(update_fpcsr)(CPUOpenRISCState *env)
{
int tmp = ieee_ex_to_openrisc(cpu,
get_float_exception_flags(&cpu->env.fp_status));
int tmp = get_float_exception_flags(&env->fp_status);
SET_FP_CAUSE(cpu->env.fpcsr, tmp);
if ((GET_FP_ENABLE(cpu->env.fpcsr) & tmp) &&
(cpu->env.fpcsr & FPCSR_FPEE)) {
helper_exception(&cpu->env, EXCP_FPE);
} else {
UPDATE_FP_FLAGS(cpu->env.fpcsr, tmp);
if (tmp) {
set_float_exception_flags(0, &env->fp_status);
tmp = ieee_ex_to_openrisc(tmp);
if (tmp) {
env->fpcsr |= tmp;
if (env->fpcsr & FPCSR_FPEE) {
helper_exception(env, EXCP_FPE);
}
}
}
}
uint64_t HELPER(itofd)(CPUOpenRISCState *env, uint64_t val)
{
uint64_t itofd;
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
set_float_exception_flags(0, &cpu->env.fp_status);
itofd = int32_to_float64(val, &cpu->env.fp_status);
update_fpcsr(cpu);
return itofd;
return int32_to_float64(val, &env->fp_status);
}
uint32_t HELPER(itofs)(CPUOpenRISCState *env, uint32_t val)
{
uint32_t itofs;
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
set_float_exception_flags(0, &cpu->env.fp_status);
itofs = int32_to_float32(val, &cpu->env.fp_status);
update_fpcsr(cpu);
return itofs;
return int32_to_float32(val, &env->fp_status);
}
uint64_t HELPER(ftoid)(CPUOpenRISCState *env, uint64_t val)
{
uint64_t ftoid;
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
set_float_exception_flags(0, &cpu->env.fp_status);
ftoid = float32_to_int64(val, &cpu->env.fp_status);
update_fpcsr(cpu);
return ftoid;
return float32_to_int64(val, &env->fp_status);
}
uint32_t HELPER(ftois)(CPUOpenRISCState *env, uint32_t val)
{
uint32_t ftois;
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
set_float_exception_flags(0, &cpu->env.fp_status);
ftois = float32_to_int32(val, &cpu->env.fp_status);
update_fpcsr(cpu);
return ftois;
return float32_to_int32(val, &env->fp_status);
}
#define FLOAT_OP(name, p) void helper_float_##_##p(void)
#define FLOAT_CALC(name) \
uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \
uint64_t fdt0, uint64_t fdt1) \
{ \
uint64_t result; \
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
set_float_exception_flags(0, &cpu->env.fp_status); \
result = float64_ ## name(fdt0, fdt1, &cpu->env.fp_status); \
update_fpcsr(cpu); \
return result; \
} \
\
{ return float64_ ## name(fdt0, fdt1, &env->fp_status); } \
uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \
uint32_t fdt0, uint32_t fdt1) \
{ \
uint32_t result; \
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
set_float_exception_flags(0, &cpu->env.fp_status); \
result = float32_ ## name(fdt0, fdt1, &cpu->env.fp_status); \
update_fpcsr(cpu); \
return result; \
} \
{ return float32_ ## name(fdt0, fdt1, &env->fp_status); }
FLOAT_CALC(add)
FLOAT_CALC(sub)
@ -151,132 +100,29 @@ FLOAT_CALC(rem)
uint64_t helper_float_madd_d(CPUOpenRISCState *env, uint64_t a,
uint64_t b, uint64_t c)
{
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
uint64_t result;
set_float_exception_flags(0, &cpu->env.fp_status);
/* Note that or1ksim doesn't use merged operation. */
result = float64_mul(b, c, &cpu->env.fp_status);
result = float64_add(result, a, &cpu->env.fp_status);
update_fpcsr(cpu);
return result;
/* Note that or1ksim doesn't use fused operation. */
b = float64_mul(b, c, &env->fp_status);
return float64_add(a, b, &env->fp_status);
}
uint32_t helper_float_madd_s(CPUOpenRISCState *env, uint32_t a,
uint32_t b, uint32_t c)
{
OpenRISCCPU *cpu = openrisc_env_get_cpu(env);
uint32_t result;
set_float_exception_flags(0, &cpu->env.fp_status);
/* Note that or1ksim doesn't use merged operation. */
result = float32_mul(b, c, &cpu->env.fp_status);
result = float32_add(result, a, &cpu->env.fp_status);
update_fpcsr(cpu);
return result;
/* Note that or1ksim doesn't use fused operation. */
b = float32_mul(b, c, &env->fp_status);
return float32_add(a, b, &env->fp_status);
}
#define FLOAT_CMP(name) \
uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \
uint64_t fdt0, uint64_t fdt1) \
{ \
int res; \
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
set_float_exception_flags(0, &cpu->env.fp_status); \
res = float64_ ## name(fdt0, fdt1, &cpu->env.fp_status); \
update_fpcsr(cpu); \
return res; \
} \
\
uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \
uint32_t fdt0, uint32_t fdt1)\
{ \
int res; \
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
set_float_exception_flags(0, &cpu->env.fp_status); \
res = float32_ ## name(fdt0, fdt1, &cpu->env.fp_status); \
update_fpcsr(cpu); \
return res; \
}
#define FLOAT_CMP(name, impl) \
target_ulong helper_float_ ## name ## _d(CPUOpenRISCState *env, \
uint64_t fdt0, uint64_t fdt1) \
{ return float64_ ## impl(fdt0, fdt1, &env->fp_status); } \
target_ulong helper_float_ ## name ## _s(CPUOpenRISCState *env, \
uint32_t fdt0, uint32_t fdt1) \
{ return float32_ ## impl(fdt0, fdt1, &env->fp_status); }
FLOAT_CMP(le)
FLOAT_CMP(eq)
FLOAT_CMP(lt)
FLOAT_CMP(le, le)
FLOAT_CMP(lt, lt)
FLOAT_CMP(eq, eq_quiet)
#undef FLOAT_CMP
#define FLOAT_CMPNE(name) \
uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \
uint64_t fdt0, uint64_t fdt1) \
{ \
int res; \
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
set_float_exception_flags(0, &cpu->env.fp_status); \
res = !float64_eq_quiet(fdt0, fdt1, &cpu->env.fp_status); \
update_fpcsr(cpu); \
return res; \
} \
\
uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \
uint32_t fdt0, uint32_t fdt1) \
{ \
int res; \
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
set_float_exception_flags(0, &cpu->env.fp_status); \
res = !float32_eq_quiet(fdt0, fdt1, &cpu->env.fp_status); \
update_fpcsr(cpu); \
return res; \
}
FLOAT_CMPNE(ne)
#undef FLOAT_CMPNE
#define FLOAT_CMPGT(name) \
uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \
uint64_t fdt0, uint64_t fdt1) \
{ \
int res; \
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
set_float_exception_flags(0, &cpu->env.fp_status); \
res = !float64_le(fdt0, fdt1, &cpu->env.fp_status); \
update_fpcsr(cpu); \
return res; \
} \
\
uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \
uint32_t fdt0, uint32_t fdt1) \
{ \
int res; \
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
set_float_exception_flags(0, &cpu->env.fp_status); \
res = !float32_le(fdt0, fdt1, &cpu->env.fp_status); \
update_fpcsr(cpu); \
return res; \
}
FLOAT_CMPGT(gt)
#undef FLOAT_CMPGT
#define FLOAT_CMPGE(name) \
uint64_t helper_float_ ## name ## _d(CPUOpenRISCState *env, \
uint64_t fdt0, uint64_t fdt1) \
{ \
int res; \
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
set_float_exception_flags(0, &cpu->env.fp_status); \
res = !float64_lt(fdt0, fdt1, &cpu->env.fp_status); \
update_fpcsr(cpu); \
return res; \
} \
\
uint32_t helper_float_ ## name ## _s(CPUOpenRISCState *env, \
uint32_t fdt0, uint32_t fdt1) \
{ \
int res; \
OpenRISCCPU *cpu = openrisc_env_get_cpu(env); \
set_float_exception_flags(0, &cpu->env.fp_status); \
res = !float32_lt(fdt0, fdt1, &cpu->env.fp_status); \
update_fpcsr(cpu); \
return res; \
}
FLOAT_CMPGE(ge)
#undef FLOAT_CMPGE

25
target/openrisc/helper.h
View File

@ -24,17 +24,19 @@ DEF_HELPER_FLAGS_1(ove_ov, TCG_CALL_NO_WG, void, env)
DEF_HELPER_FLAGS_1(ove_cyov, TCG_CALL_NO_WG, void, env)
/* float */
DEF_HELPER_FLAGS_2(itofd, TCG_CALL_NO_WG, i64, env, i64)
DEF_HELPER_FLAGS_2(itofs, TCG_CALL_NO_WG, i32, env, i32)
DEF_HELPER_FLAGS_2(ftoid, TCG_CALL_NO_WG, i64, env, i64)
DEF_HELPER_FLAGS_2(ftois, TCG_CALL_NO_WG, i32, env, i32)
DEF_HELPER_FLAGS_1(update_fpcsr, TCG_CALL_NO_WG, void, env)
DEF_HELPER_FLAGS_4(float_madd_s, TCG_CALL_NO_WG, i32, env, i32, i32, i32)
DEF_HELPER_FLAGS_4(float_madd_d, TCG_CALL_NO_WG, i64, env, i64, i64, i64)
DEF_HELPER_FLAGS_2(itofd, TCG_CALL_NO_RWG, i64, env, i64)
DEF_HELPER_FLAGS_2(itofs, TCG_CALL_NO_RWG, i32, env, i32)
DEF_HELPER_FLAGS_2(ftoid, TCG_CALL_NO_RWG, i64, env, i64)
DEF_HELPER_FLAGS_2(ftois, TCG_CALL_NO_RWG, i32, env, i32)
DEF_HELPER_FLAGS_4(float_madd_s, TCG_CALL_NO_RWG, i32, env, i32, i32, i32)
DEF_HELPER_FLAGS_4(float_madd_d, TCG_CALL_NO_RWG, i64, env, i64, i64, i64)
#define FOP_CALC(op) \
DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_WG, i32, env, i32, i32) \
DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_RWG, i32, env, i32, i32) \
DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_RWG, i64, env, i64, i64)
FOP_CALC(add)
FOP_CALC(sub)
FOP_CALC(mul)
@ -43,14 +45,11 @@ FOP_CALC(rem)
#undef FOP_CALC
#define FOP_CMP(op) \
DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_WG, i32, env, i32, i32) \
DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_RWG, tl, env, i32, i32) \
DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_RWG, tl, env, i64, i64)
FOP_CMP(eq)
FOP_CMP(lt)
FOP_CMP(le)
FOP_CMP(ne)
FOP_CMP(gt)
FOP_CMP(ge)
#undef FOP_CMP
/* interrupt */

189
target/openrisc/insns.decode Normal file
View File

@ -0,0 +1,189 @@
#
# OpenRISC instruction decode definitions.
#
# Copyright (c) 2018 Richard Henderson <rth@twiddle.net>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, see <http://www.gnu.org/licenses/>.
#
&dab d a b
&da d a
&ab a b
&dal d a l
&ai a i
####
# System Instructions
####
l_sys 001000 0000000000 k:16
l_trap 001000 0100000000 k:16
l_msync 001000 1000000000 00000000 00000000
l_psync 001000 1010000000 00000000 00000000
l_csync 001000 1100000000 00000000 00000000
l_rfe 001001 ----- ----- -------- --------
####
# Branch Instructions
####
l_j 000000 n:s26
l_jal 000001 n:s26
l_bnf 000011 n:s26
l_bf 000100 n:s26
l_jr 010001 ---------- b:5 -----------
l_jalr 010010 ---------- b:5 -----------
####
# Memory Instructions
####
&load d a i
@load ...... d:5 a:5 i:s16 &load
%store_i 21:s5 0:11
&store a b i
@store ...... ..... a:5 b:5 ........... &store i=%store_i
l_lwa 011011 ..... ..... ........ ........ @load
l_lwz 100001 ..... ..... ........ ........ @load
l_lws 100010 ..... ..... ........ ........ @load
l_lbz 100011 ..... ..... ........ ........ @load
l_lbs 100100 ..... ..... ........ ........ @load
l_lhz 100101 ..... ..... ........ ........ @load
l_lhs 100110 ..... ..... ........ ........ @load
l_swa 110011 ..... ..... ..... ........... @store
l_sw 110101 ..... ..... ..... ........... @store
l_sb 110110 ..... ..... ..... ........... @store
l_sh 110111 ..... ..... ..... ........... @store
####
# Immediate Operand Instructions
####
%mtspr_k 21:5 0:11
&rri d a i
&rrk d a k
@rri ...... d:5 a:5 i:s16 &rri
@rrk ...... d:5 a:5 k:16 &rrk
l_nop 000101 01--- ----- k:16
l_addi 100111 ..... ..... ........ ........ @rri
l_addic 101000 ..... ..... ........ ........ @rri
l_andi 101001 ..... ..... ........ ........ @rrk
l_ori 101010 ..... ..... ........ ........ @rrk
l_xori 101011 ..... ..... ........ ........ @rri
l_muli 101100 ..... ..... ........ ........ @rri
l_mfspr 101101 ..... ..... ........ ........ @rrk
l_mtspr 110000 ..... a:5 b:5 ........... k=%mtspr_k
l_maci 010011 ----- a:5 i:s16
l_movhi 000110 d:5 ----0 k:16
l_macrc 000110 d:5 ----1 00000000 00000000
####
# Arithmetic Instructions
####
l_exths 111000 d:5 a:5 ----- - 0000 -- 1100
l_extbs 111000 d:5 a:5 ----- - 0001 -- 1100
l_exthz 111000 d:5 a:5 ----- - 0010 -- 1100
l_extbz 111000 d:5 a:5 ----- - 0011 -- 1100
l_add 111000 d:5 a:5 b:5 - 00 ---- 0000
l_addc 111000 d:5 a:5 b:5 - 00 ---- 0001
l_sub 111000 d:5 a:5 b:5 - 00 ---- 0010
l_and 111000 d:5 a:5 b:5 - 00 ---- 0011
l_or 111000 d:5 a:5 b:5 - 00 ---- 0100
l_xor 111000 d:5 a:5 b:5 - 00 ---- 0101
l_cmov 111000 d:5 a:5 b:5 - 00 ---- 1110
l_ff1 111000 d:5 a:5 ----- - 00 ---- 1111
l_fl1 111000 d:5 a:5 ----- - 01 ---- 1111
l_sll 111000 d:5 a:5 b:5 - 0000 -- 1000
l_srl 111000 d:5 a:5 b:5 - 0001 -- 1000
l_sra 111000 d:5 a:5 b:5 - 0010 -- 1000
l_ror 111000 d:5 a:5 b:5 - 0011 -- 1000
l_mul 111000 d:5 a:5 b:5 - 11 ---- 0110
l_mulu 111000 d:5 a:5 b:5 - 11 ---- 1011
l_div 111000 d:5 a:5 b:5 - 11 ---- 1001
l_divu 111000 d:5 a:5 b:5 - 11 ---- 1010
l_muld 111000 ----- a:5 b:5 - 11 ---- 0111
l_muldu 111000 ----- a:5 b:5 - 11 ---- 1100
l_mac 110001 ----- a:5 b:5 ------- 0001
l_macu 110001 ----- a:5 b:5 ------- 0011
l_msb 110001 ----- a:5 b:5 ------- 0010
l_msbu 110001 ----- a:5 b:5 ------- 0100
l_slli 101110 d:5 a:5 -------- 00 l:6
l_srli 101110 d:5 a:5 -------- 01 l:6
l_srai 101110 d:5 a:5 -------- 10 l:6
l_rori 101110 d:5 a:5 -------- 11 l:6
####
# Compare Instructions
####
l_sfeq 111001 00000 a:5 b:5 -----------
l_sfne 111001 00001 a:5 b:5 -----------
l_sfgtu 111001 00010 a:5 b:5 -----------
l_sfgeu 111001 00011 a:5 b:5 -----------
l_sfltu 111001 00100 a:5 b:5 -----------
l_sfleu 111001 00101 a:5 b:5 -----------
l_sfgts 111001 01010 a:5 b:5 -----------
l_sfges 111001 01011 a:5 b:5 -----------
l_sflts 111001 01100 a:5 b:5 -----------
l_sfles 111001 01101 a:5 b:5 -----------
l_sfeqi 101111 00000 a:5 i:s16
l_sfnei 101111 00001 a:5 i:s16
l_sfgtui 101111 00010 a:5 i:s16
l_sfgeui 101111 00011 a:5 i:s16
l_sfltui 101111 00100 a:5 i:s16
l_sfleui 101111 00101 a:5 i:s16
l_sfgtsi 101111 01010 a:5 i:s16
l_sfgesi 101111 01011 a:5 i:s16
l_sfltsi 101111 01100 a:5 i:s16
l_sflesi 101111 01101 a:5 i:s16
####
# FP Instructions
####
lf_add_s 110010 d:5 a:5 b:5 --- 00000000
lf_sub_s 110010 d:5 a:5 b:5 --- 00000001
lf_mul_s 110010 d:5 a:5 b:5 --- 00000010
lf_div_s 110010 d:5 a:5 b:5 --- 00000011
lf_rem_s 110010 d:5 a:5 b:5 --- 00000110
lf_madd_s 110010 d:5 a:5 b:5 --- 00000111
lf_itof_s 110010 d:5 a:5 00000 --- 00000100
lf_ftoi_s 110010 d:5 a:5 00000 --- 00000101
lf_sfeq_s 110010 ----- a:5 b:5 --- 00001000
lf_sfne_s 110010 ----- a:5 b:5 --- 00001001
lf_sfgt_s 110010 ----- a:5 b:5 --- 00001010
lf_sfge_s 110010 ----- a:5 b:5 --- 00001011
lf_sflt_s 110010 ----- a:5 b:5 --- 00001100
lf_sfle_s 110010 ----- a:5 b:5 --- 00001101

1800
target/openrisc/translate.c
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