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We will need a backend interface for performing 8-bit zero-extend.
Use it in tcg_reg_alloc_op in the meantime.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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We will need a backend interface for performing 8-bit sign-extend.
Use it in tcg_reg_alloc_op in the meantime.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Fill in the parameters for the host ABI for Int128 for
those backends which require no extra modification.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Replace the flat array tcg_target_call_oarg_regs[] with
a function call including the TCGCallReturnKind.
Extend the set of registers for ARM to r0-r3 to match the ABI:
https://github.com/ARM-software/abi-aa/blob/main/aapcs32/aapcs32.rst#result-return
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Implement the function for arm, i386, and s390x, which will use it.
Add stubs for all other backends.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Although we still can't use ldrd and strd for all operations,
increase the chances by getting the register allocation correct.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Now that tcg can handle direct and indirect goto_tb
simultaneously, we can optimistically leave space for
a direct branch and fall back to loading the pointer
from the TB for an indirect branch.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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We now have the option to generate direct or indirect
goto_tb depending on the dynamic displacement, thus
the define is no longer necessary or completely accurate.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Install empty versions for !TCG_TARGET_HAS_direct_jump hosts.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Replace 'tc_ptr' and 'addr' with 'tb' and 'n'.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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The INDEX_op_goto_tb opcode needs no register allocation.
Split out a dedicated helper function for it.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Similar to the existing set_jmp_reset_offset. Include the
rw->rx address space conversion done by arm and s390x, and
forgotten by mips and riscv.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Test TCG_TARGET_HAS_direct_jump instead of testing an
implementation pointer.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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The INDEX_op_exit_tb opcode needs no register allocation.
Split out a dedicated helper function for it.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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This eliminates an ifdef for TCI, and will be required for
expanding the call for TCGv_i128.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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For 64-bit hosts that had TCG_TARGET_EXTEND_ARGS, set
TCG_TARGET_CALL_ARG_I32 to TCG_CALL_ARG_EXTEND.
Otherwise, use TCG_CALL_ARG_NORMAL.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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For 32-bit hosts when TCG_TARGET_CALL_ALIGN_ARGS was set, use
TCG_CALL_ARG_EVEN. For 64-bit hosts, TCG_TARGET_CALL_ALIGN_ARGS
was silently ignored, so always use TCG_CALL_ARG_NORMAL.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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The hppa host code has been removed since 2013; this
should have been deleted at the same time.
Fixes: 802b5081233a ("tcg-hppa: Remove tcg backend")
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Replace a config-time define with a compile time condition
define (compatible with clang and gcc) that must be declared prior to
its usage. This avoids having a global configure time define, but also
prevents from bad usage, if the config header wasn't included before.
This can help to make some code independent from qemu too.
gcc supports __BYTE_ORDER__ from about 4.6 and clang from 3.2.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[ For the s390x parts I'm involved in ]
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323155743.1585078-7-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The LDRD (register) instruction is UNPREDICTABLE if the Rm register
is the same as either Rt or Rt+1 (the two registers being loaded to).
We weren't making sure we avoided this, with the result that on some
host CPUs like the Cortex-A7 we would get a SIGILL because the CPU
chooses to UNDEF for this particular UNPREDICTABLE case.
Since we've already checked that datalo is aligned, we can simplify
the test vs the Rm operand by aligning it before comparison. Check
for the two orderings before falling back to two ldr instructions.
We don't bother to do anything similar for tcg_out_ldrd_rwb(),
because it is only used in tcg_out_tlb_read() with a fixed set of
registers which don't overlap.
There is no equivalent UNPREDICTABLE case for STRD.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/896
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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We've had placeholders for these opcodes for a while,
and should have support on ppc, s390x and avx512 hosts.
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reserve a register for the guest_base using aarch64 for reference.
By doing so, we do not have to recompute it for every memory load.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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From armv6, the architecture supports unaligned accesses.
All we need to do is perform the correct alignment check
in tcg_out_tlb_read.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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We will shortly allow the use of unaligned memory accesses,
and these require proper alignment. Use get_alignment_bits
to verify and remove USING_SOFTMMU.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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This is now always true, since we require armv6.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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This is now always true, since we require armv6.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Support for unaligned accesses is difficult for pre-v6 hosts.
While debian still builds for armv4, we cannot use a compile
time test, so test the architecture at runtime and error out.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Renaming defines for quad in their various forms so that their signedness is
now explicit.
Done using git grep as suggested by Philippe, with a bit of hand edition to
keep assignments aligned.
Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20220106210108.138226-2-frederic.petrot@univ-grenoble-alpes.fr
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
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With arm32, the ABI gives us 8-byte alignment for the stack.
While it's possible to realign the stack to provide 16-byte alignment,
it's far easier to simply not encode 16-byte alignment in the
VLD1 and VST1 instructions that we emit.
Remove the assertion in temp_allocate_frame, limit natural alignment
to the provided stack alignment, and add a comment.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1999878
Reported-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210912174925.200132-1-richard.henderson@linaro.org>
Message-Id: <20211206191335.230683-2-richard.henderson@linaro.org>
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We're about to move this out of tcg.h, so rename it
as we did when moving MemOp.
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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We have lacked expressive support for memory sizes larger
than 64-bits for a while. Fixing that requires adjustment
to several points where we used this for array indexing,
and two places that develop -Wswitch warnings after the change.
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Let the compiler decide about inlining.
Remove tcg_out_nop as unused.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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We have already computed the rotated value of the imm8
portion of the complete imm12 encoding. No sense leaving
the combination of rot + rotation to the caller.
Create an encode_imm12_nofail helper that performs an assert.
This removes the final use of the local "rotl" function,
which duplicated our generic "rol32" function.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Expand these hard-coded instructions symbolically.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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ARMv4T has BX as its only interworking instruction. In order
to support testing of different architecture revisions with a
qemu binary that may have been built for, say ARMv6T2, fill in
the blank required to make calls to helpers in thumb mode.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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According to the Arm ARM DDI 0406C, section A1.3, the valid variants
are ARMv5T, ARMv5TE, ARMv5TEJ -- there is no ARMv5 without Thumb.
Therefore simplify the test from preprocessor ifdefs to base
architecture revision. Retain the "t" in the name to minimize churn.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Some of the functions specified _reg, some _imm, and some
left it blank. Make it clearer to which we are referring.
Split tcg_out_b_reg from tcg_out_bx_reg, to indicate when
we do not actually require BX semantics.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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GCC since 4.8 provides the definition and we now require 7.5.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Commit 5e8892db93 fixed several function signatures but tcg_out_vec_op
for arm is missing. It causes a build error on armv6 and armv7:
tcg-target.c.inc:2718:42: error: argument 5 of type 'const TCGArg *'
{aka 'const unsigned int *'} declared as a pointer [-Werror=array-parameter=]
const TCGArg *args, const int *const_args)
~~~~~~~~~~~~~~^~~~
../tcg/tcg.c:120:41: note: previously declared as an array 'const TCGArg[16]'
{aka 'const unsigned int[16]'}
const TCGArg args[TCG_MAX_OP_ARGS],
~~~~~~~~~~~~~~^~~~
Signed-off-by: Jose R. Ziviani <jziviani@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210908185338.7927-1-jziviani@suse.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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into staging
Add translator_use_goto_tb.
Cleanups in prep of breakpoint fixes.
Misc fixes.
# gpg: Signature made Sat 10 Jul 2021 16:29:14 BST
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* remotes/rth-gitlab/tags/pull-tcg-20210710: (41 commits)
cpu: Add breakpoint tracepoints
tcg: Remove TCG_TARGET_HAS_goto_ptr
accel/tcg: Log tb->cflags with -d exec
accel/tcg: Split out log_cpu_exec
accel/tcg: Move tb_lookup to cpu-exec.c
accel/tcg: Move helper_lookup_tb_ptr to cpu-exec.c
target/i386: Use cpu_breakpoint_test in breakpoint_handler
tcg: Fix prologue disassembly
target/xtensa: Use translator_use_goto_tb
target/tricore: Use tcg_gen_lookup_and_goto_ptr
target/tricore: Use translator_use_goto_tb
target/sparc: Use translator_use_goto_tb
target/sh4: Use translator_use_goto_tb
target/s390x: Remove use_exit_tb
target/s390x: Use translator_use_goto_tb
target/rx: Use translator_use_goto_tb
target/riscv: Use translator_use_goto_tb
target/ppc: Use translator_use_goto_tb
target/openrisc: Use translator_use_goto_tb
target/nios2: Use translator_use_goto_tb
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Since 6eea04347eb6, all tcg backends support goto_ptr.
Remove the conditional, making support mandatory.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Fix "havn't (make)" -> "haven't (made)" typo.
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210629051400.2573253-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Now that the middle-end can replicate the same tricks as tcg/arm
used for optimizing bswap for signed loads and for stores, do not
pretend to have these memory ops in the backend.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Combine the three bswap16 routines, and differentiate via the flags.
Use the correct flags combination from the load/store routines, and
pass along the constant parameter from tcg_out_op.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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