Quoting Peter Maydell:
These MEMTX_* aren't from the memory transaction API functions;
they're just being used by gicd_readl() and friends as a way to
indicate a success/failure so that the actual MemoryRegionOps
read/write fns like gicv3_dist_read() can log a guest error.
Arguably this is a bit of a misuse of the MEMTX_* constants and
perhaps we should have gicd_readl etc return a bool instead.
Follow his suggestion and replace the MEMTX_* constants by
boolean values, simplifying a bit the gicv3_dist_read() /
gicv3_dist_write() handlers.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20210826180704.2131949-3-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
QEMU load/store API (docs/devel/loads-stores.rst) uses the 'q'
suffix for 64-bit accesses. Rename the current 'll' suffix to
have the GIC dist accessors better match the rest of the codebase.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20210826180704.2131949-2-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Remove the raspi2/raspi3 machine aliases,
deprecated since commit 155e1c82ed.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210827060815.2384760-3-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit 155e1c82ed deprecated the raspi2/raspi3 machine names.
Use the recommended new names: raspi2b and raspi3b.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-id: 20210827060815.2384760-2-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- Add a config for Shakti UART
- Fixup virt flash node
- Don't override users supplied ISA version
- Fixup some CSR accesses
- Use g_strjoinv() for virt machine PLIC string config
- Fix an overflow in the SiFive CLINT
- Add 64-bit register access helpers
- Replace tcg_const_* with direct constant usage
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Merge remote-tracking branch 'remotes/alistair/tags/pull-riscv-to-apply-20210901-2' into staging
First RISC-V PR for QEMU 6.2
- Add a config for Shakti UART
- Fixup virt flash node
- Don't override users supplied ISA version
- Fixup some CSR accesses
- Use g_strjoinv() for virt machine PLIC string config
- Fix an overflow in the SiFive CLINT
- Add 64-bit register access helpers
- Replace tcg_const_* with direct constant usage
# gpg: Signature made Wed 01 Sep 2021 03:08:48 BST
# gpg: using RSA key F6C4AC46D4934868D3B8CE8F21E10D29DF977054
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [full]
# Primary key fingerprint: F6C4 AC46 D493 4868 D3B8 CE8F 21E1 0D29 DF97 7054
* remotes/alistair/tags/pull-riscv-to-apply-20210901-2: (33 commits)
target/riscv: Use {get,dest}_gpr for RVV
target/riscv: Tidy trans_rvh.c.inc
target/riscv: Use {get,dest}_gpr for RVD
target/riscv: Use {get,dest}_gpr for RVF
target/riscv: Use gen_shift_imm_fn for slli_uw
target/riscv: Use {get,dest}_gpr for RVA
target/riscv: Reorg csr instructions
target/riscv: Fix hgeie, hgeip
target/riscv: Fix rmw_sip, rmw_vsip, rmw_hsip vs write-only operation
target/riscv: Use {get, dest}_gpr for integer load/store
target/riscv: Use get_gpr in branches
target/riscv: Use extracts for sraiw and srliw
target/riscv: Use DisasExtend in shift operations
target/riscv: Add DisasExtend to gen_unary
target/riscv: Move gen_* helpers for RVB
target/riscv: Move gen_* helpers for RVM
target/riscv: Use gen_arith for mulh and mulhu
target/riscv: Remove gen_arith_div*
target/riscv: Add DisasExtend to gen_arith*
target/riscv: Introduce DisasExtend and new helpers
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Remove gen_get_gpr, as the function becomes unused.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210823195529.560295-25-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Exit early if check_access fails.
Split out do_hlv, do_hsv, do_hlvx subroutines.
Use dest_gpr, get_gpr in the new subroutines.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210823195529.560295-24-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210823195529.560295-23-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210823195529.560295-22-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Always use tcg_gen_deposit_z_tl; the special case for
shamt >= 32 is handled there.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210823195529.560295-21-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210823195529.560295-20-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Introduce csrr and csrw helpers, for read-only and write-only insns.
Note that we do not properly implement this in riscv_csrrw, in that
we cannot distinguish true read-only (rs1 == 0) from any other zero
write_mask another source register -- this should still raise an
exception for read-only registers.
Only issue gen_io_start for CF_USE_ICOUNT.
Use ctx->zero for csrrc.
Use get_gpr and dest_gpr.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210823195529.560295-19-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
We failed to write into *val for these read functions;
replace them with read_zero. Only warn about unsupported
non-zero value when writing a non-zero value.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210823195529.560295-18-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
We distinguish write-only by passing ret_value as NULL.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210823195529.560295-17-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-16-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Narrow the scope of t0 in trans_jalr.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-15-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
These operations can be done in one instruction on some hosts.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210823195529.560295-14-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
These operations are greatly simplified by ctx->w, which allows
us to fold gen_shiftw into gen_shift. Split gen_shifti into
gen_shift_imm_{fn,tl} like we do for gen_arith_imm_{fn,tl}.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-13-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Use ctx->w for ctpopw, which is the only one that can
re-use the generic algorithm for the narrow operation.
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-12-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Move these helpers near their use by the trans_*
functions within insn_trans/trans_rvb.c.inc.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-11-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Move these helpers near their use by the trans_*
functions within insn_trans/trans_rvm.c.inc.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-10-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Split out gen_mulh and gen_mulhu and use the common helper.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-9-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Use ctx->w and the enhanced gen_arith function.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-8-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Most arithmetic does not require extending the inputs.
Exceptions include division, comparison and minmax.
Begin using ctx->w, which allows elimination of gen_addw,
gen_subw, gen_mulw.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-7-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Introduce get_gpr, dest_gpr, temp_new -- new helpers that do not force
tcg globals into temps, returning a constant 0 for $zero as source and
a new temp for $zero as destination.
Introduce ctx->w for simplifying word operations, such as addw.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-6-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
We will require the context to handle RV64 word operations.
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-5-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Utilize the condition in the movcond more; this allows some of
the setcond that were feeding into movcond to be removed.
Do not write into source1 and source2. Re-name "condN" to "tempN"
and use the temporaries for more than holding conditions.
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-4-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-3-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Replace uses of tcg_const_* with the allocate and free close together.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-2-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
If we have a field that's wider than 32-bits, we need a data type wide enough to
be able to create the bitfield used to deposit the value.
Signed-off-by: Joe Komlodi <joe.komlodi@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 1626805903-162860-3-git-send-email-joe.komlodi@xilinx.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
We already have some utilities to handle 64-bit wide registers, so this just
adds some more for:
- Initializing 64-bit registers
- Extracting and depositing to an array of 64-bit registers
Signed-off-by: Joe Komlodi <joe.komlodi@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 1626805903-162860-2-git-send-email-joe.komlodi@xilinx.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
`muldiv64` would overflow in cases where the final 96-bit value does not
fit in a `uint64_t`. This would result in small values that cause an
interrupt to be triggered much sooner than intended.
The overflow can be detected in most cases by checking if the new value is
smaller than the previous value. If the final result is larger than
`diff` it is either correct or it doesn't matter as it is effectively
infinite anyways.
`next` is an `uint64_t` value, but `timer_mod` takes an `int64_t`. This
resulted in high values such as `UINT64_MAX` being converted to `-1`,
which caused an immediate timer interrupt.
By limiting `next` to `INT64_MAX` no overflow will happen while the
timer will still be effectively set to "infinitely" far in the future.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/493
Signed-off-by: David Hoppenbrouwers <david@salt-inc.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210827152324.5201-1-david@salt-inc.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
In the riscv virt machine init function, We assemble a string
plic_hart_config which is a comma-separated list of N copies of the
VIRT_PLIC_HART_CONFIG string. The code that does this has a
misunderstanding of the strncat() length argument. If the source
string is too large strncat() will write a maximum of length+1 bytes
(length bytes from the source string plus a trailing NUL), but the
code here assumes that it will write only length bytes at most.
This isn't an actual bug because the code has correctly precalculated
the amount of memory it needs to allocate so that it will never be
too small (i.e. we could have used plain old strcat()), but it does
mean that the code looks like it has a guard against accidental
overrun when it doesn't.
Rewrite the string handling here to use the glib g_strjoinv()
function, which means we don't need to do careful accountancy of
string lengths, and makes it clearer that what we're doing is
"create a comma-separated string".
Fixes: Coverity 1460752
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210812144647.10516-1-peter.maydell@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
For U-mode CSRs, read-only check is also needed.
Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-id: 20210810014552.4884-1-zhiwei_liu@c-sky.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
For some cpu, the isa version has already been set in cpu init function.
Thus only override the isa version when isa version is not set, or
users set different isa version explicitly by cpu parameters.
Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-id: 20210811144612.68674-1-zhiwei_liu@c-sky.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
When privilege check fails, RISCV_EXCP_ILLEGAL_INST is returned,
not -1 (RISCV_EXCP_NONE).
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210807141025.31808-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The flash is not inside the SoC, so it's inappropriate to put it
under the /soc node. Move it to root instead.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210807035641.22449-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Use a dedicated UART config(CONFIG_SHAKTI_UART) to select
shakti uart.
Signed-off-by: Vijai Kumar K <vijai@behindbytes.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210731190229.137483-1-vijai@behindbytes.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The current implementation lacks migration support. After migration,
vdagent support will be broken (even after a restart of the daemons).
Let's try to fix it in 6.2.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210805135715.857938-19-marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Rather than leaving the agent timing out or hanging, reply to it with an
empty result.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210805135715.857938-15-marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
The clipboard unit now tracks the current clipboard grab, no need to
duplicate this work.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210805135715.857938-14-marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Avoid handlers being called with dangling pointers when the object is
freed.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210805135715.857938-10-marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
