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qemu/target/riscv
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Yu-Ming Chang 38c83e8d3a target/riscv: raise an exception when CSRRS/CSRRC writes a read-only CSR 
Both CSRRS and CSRRC always read the addressed CSR and cause any read side
effects regardless of rs1 and rd fields. Note that if rs1 specifies a register
holding a zero value other than x0, the instruction will still attempt to write
the unmodified value back to the CSR and will cause any attendant side effects.

So if CSRRS or CSRRC tries to write a read-only CSR with rs1 which specifies
a register holding a zero value, an illegal instruction exception should be
raised.

Signed-off-by: Yu-Ming Chang <yumin686@andestech.com>
Signed-off-by: Alvin Chang <alvinga@andestech.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <172100444279.18077.6893072378718059541-0@git.sr.ht>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2024-07-18 12:08:45 +10:00
..
insn_trans target/riscv: Add amocas.[b|h] for Zabha 2024-07-18 12:00:42 +10:00
kvm target/riscv/kvm: update KVM regs to Linux 6.10-rc5 2024-07-18 12:08:44 +10:00
tcg target/riscv: Add zcmop extension 2024-07-18 12:00:42 +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: Add cycle & instret privilege mode filtering support 2024-07-18 12:08:44 +10:00
cpu_cfg.h target/riscv: Add cycle & instret privilege mode filtering properties 2024-07-18 12:08:44 +10:00
cpu_helper.c target/riscv: Implement privilege mode filtering for cycle/instret 2024-07-18 12:08:44 +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 target: Define TCG_GUEST_DEFAULT_MO in 'cpu-param.h' 2024-04-26 15:31:37 +02:00
cpu-qom.h target/riscv: add rv32i, rv32e and rv64e CPUs 2024-02-09 20:49:41 +10:00
cpu.c target/riscv: Expose the Smcntrpmf config 2024-07-18 12:08:45 +10:00
cpu.h target/riscv: raise an exception when CSRRS/CSRRC writes a read-only CSR 2024-07-18 12:08:45 +10:00
crypto_helper.c target/riscv: Use accelerated helper for AES64KS1I 2023-09-11 11:45:55 +10:00
csr.c target/riscv: raise an exception when CSRRS/CSRRC writes a read-only CSR 2024-07-18 12:08:45 +10:00
debug.c target/riscv: Apply modularized matching conditions for icount trigger 2024-06-27 13:09:16 +10:00
debug.h exec: Declare CPUBreakpoint/CPUWatchpoint type in 'breakpoint.h' header 2024-04-26 17:03:05 +02:00
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 kconfig: express dependency of individual boards on libfdt 2024-05-10 15:45:15 +02:00
m128_helper.c target/helpers: Remove unnecessary 'qemu/main-loop.h' header 2023-08-31 19:47:43 +02:00
machine.c target/riscv: Save counter values during countinhibit update 2024-07-18 12:08:44 +10:00
meson.build riscv: thead: Add th.sxstatus CSR emulation 2024-06-03 11:12:12 +10:00
monitor.c riscv: spelling fixes 2023-09-08 13:08:52 +03:00
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 exec/cpu: Extract page-protection definitions to page-protection.h 2024-05-06 11:17:15 +02:00
pmp.h target/riscv/pmp: Use hwaddr instead of target_ulong for RV32 2024-01-10 18:47:46 +10:00
pmu.c target/riscv: Do not setup pmu timer if OF is disabled 2024-07-18 12:08:45 +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: Simplify type conversion for CPURISCVState 2023-05-05 10:49:49 +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 exec/cpu: Extract page-protection definitions to page-protection.h 2024-05-06 11:17:15 +02:00
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