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4923f672e3
qemu/target/riscv
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Deepak Gupta 4923f672e3 target/riscv: Introduce elp state and enabling controls for zicfilp 
zicfilp introduces a new state elp ("expected landing pad") in cpu.
During normal execution, elp is idle (NO_LP_EXPECTED) i.e not expecting
landing pad. On an indirect call, elp moves LP_EXPECTED. When elp is
LP_EXPECTED, only a subsquent landing pad instruction can set state back
to NO_LP_EXPECTED. On reset, elp is set to NO_LP_EXPECTED.

zicfilp is enabled via bit2 in *envcfg CSRs. Enabling control for M-mode
is in mseccfg CSR at bit position 10.

On trap, elp state is saved away in *status.
Adds elp to the migration state as well.

Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Co-developed-by: Jim Shu <jim.shu@sifive.com>
Co-developed-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20241008225010.1861630-4-debug@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2024-10-30 11:22:08 +10:00
..
insn_trans target/riscv: remove break after g_assert_not_reached() 2024-09-24 13:53:35 +02:00
kvm * pc: Add a description for the i8042 property 2024-10-04 19:28:37 +01:00
tcg target/riscv: Add zicfilp extension 2024-10-30 11:22:08 +10:00
arch_dump.c target/riscv: Fix format for comments 2023-05-05 10:49:50 +10:00
bitmanip_helper.c target/riscv: rvk: add support for zbkx extension 2022-04-29 10:47:45 +10:00
common-semi-target.h semihosting: Split out common-semi-target.h 2022-06-28 04:35:07 +05:30
cpu_bits.h target/riscv: Introduce elp state and enabling controls for zicfilp 2024-10-30 11:22:08 +10:00
cpu_cfg.h target/riscv: Add zicfilp extension 2024-10-30 11:22:08 +10:00
cpu_helper.c target/riscv: Correct mcause/scause bit width for RV32 in RV64 QEMU 2024-10-30 11:22:07 +10:00
cpu_user.h Supply missing header guards 2019-06-12 13:20:21 +02:00
cpu_vendorid.h target/riscv: add Ventana's Veyron V1 CPU 2023-05-05 10:49:50 +10:00
cpu-param.h license: Update deprecated SPDX tag GPL-2.0+ to GPL-2.0-or-later 2024-09-20 10:11:59 +03:00
cpu-qom.h target/riscv: Add max32 CPU for RV64 QEMU 2024-10-30 11:22:07 +10:00
cpu.c target/riscv: Introduce elp state and enabling controls for zicfilp 2024-10-30 11:22:08 +10:00
cpu.h target/riscv: Introduce elp state and enabling controls for zicfilp 2024-10-30 11:22:08 +10:00
crypto_helper.c target/riscv: Use accelerated helper for AES64KS1I 2023-09-11 11:45:55 +10:00
csr.c target/riscv: Introduce elp state and enabling controls for zicfilp 2024-10-30 11:22:08 +10:00
debug.c target/riscv: Add textra matching condition for the triggers 2024-10-02 15:11:51 +10:00
debug.h target/riscv: Add textra matching condition for the triggers 2024-10-02 15:11:51 +10:00
fpu_helper.c target/riscv: Fix froundnx.h nanbox check 2024-06-26 23:02:35 +10:00
gdbstub.c riscv, gdbstub.c: fix reg_width in ricsv_gen_dynamic_vector_feature() 2024-06-03 11:12:12 +10:00
helper.h target/riscv: Raise exceptions on wrs.nto 2024-06-03 11:12:11 +10:00
insn16.decode target/riscv: Add zcmop extension 2024-07-18 12:00:42 +10:00
insn32.decode target/riscv: Add amocas.[b|h] for Zabha 2024-07-18 12:00:42 +10:00
instmap.h target/riscv: Update [m|h]tinst CSR in riscv_cpu_do_interrupt() 2022-09-07 09:18:32 +02:00
internals.h target: Set TCGCPUOps::cpu_exec_halt to target's has_work implementation 2024-07-11 11:41:34 +01:00
Kconfig target/riscv/cpu_helper: Fix linking problem with semihosting disabled 2024-10-02 15:11:51 +10:00
m128_helper.c target/helpers: Remove unnecessary 'qemu/main-loop.h' header 2023-08-31 19:47:43 +02:00
machine.c target/riscv: Introduce elp state and enabling controls for zicfilp 2024-10-30 11:22:08 +10:00
meson.build riscv: thead: Add th.sxstatus CSR emulation 2024-06-03 11:12:12 +10:00
monitor.c target/riscv: remove break after g_assert_not_reached() 2024-09-24 13:53:35 +02:00
op_helper.c target/riscv: raise an exception when CSRRS/CSRRC writes a read-only CSR 2024-07-18 12:08:45 +10:00
pmp.c target/riscv: Introduce elp state and enabling controls for zicfilp 2024-10-30 11:22:08 +10:00
pmp.h target/riscv: Introduce elp state and enabling controls for zicfilp 2024-10-30 11:22:08 +10:00
pmu.c target/riscv: Add asserts for out-of-bound access 2024-08-06 14:20:16 +10:00
pmu.h target/riscv: More accurately model priv mode filtering. 2024-07-18 12:08:45 +10:00
riscv-qmp-cmds.c target: Improve error reporting for CpuModelInfo member @props 2024-03-12 14:03:00 +01:00
sbi_ecall_interface.h target/riscv/kvm: implement SBI debug console (DBCN) calls 2024-06-03 11:12:11 +10:00
th_csr.c riscv: thead: Add th.sxstatus CSR emulation 2024-06-03 11:12:12 +10:00
time_helper.c target/riscv: Stop timer with infinite timecmp 2024-10-02 15:11:51 +10:00
time_helper.h target/riscv: Simplify type conversion for CPURISCVState 2023-05-05 10:49:49 +10:00
trace-events target/riscv: Add ePMP CSR access functions 2021-05-11 20:02:06 +10:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
translate.c target/riscv: Move gen_cmpxchg before adding amocas.[b|h] 2024-07-18 12:00:42 +10:00
vcrypto_helper.c target/riscv/vector_helpers: do early exit when vstart >= vl 2024-03-22 15:20:02 +10:00
vector_helper.c target/riscv: Add a property to set vl to ceil(AVL/2) 2024-10-02 15:11:51 +10:00
vector_internals.c target/riscv: Fix the element agnostic function problem 2024-06-03 11:12:12 +10:00
vector_internals.h target/riscv/vector_helpers: do early exit when vstart >= vl 2024-03-22 15:20:02 +10:00
xthead.decode RISC-V: Adding XTheadFmv ISA extension 2023-02-07 08:19:23 +10:00
XVentanaCondOps.decode target/riscv: Add XVentanaCondOps custom extension 2022-02-16 12:24:18 +10:00
zce_helper.c target/riscv: add support for Zcmt extension 2023-05-05 10:49:50 +10:00