Per the "MIPS Architecture Extension: nanoMIPS32 DSP TRM" rev 0.04,
MULT and MULTU opcodes:
The value of ac selects an accumulator numbered from 0 to 3.
When ac=0, this refers to the original HI/LO register pair of the
MIPS32 architecture.
In Release 6 of the MIPS Architecture, accumulators are eliminated
from MIPS32.
Ensure pre-Release 6 is restricted to HI/LO registers pair.
Fixes: 8b3698b294 ("target/mips: Add emulation of DSP ASE for nanoMIPS - part 4")
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
GDB single-stepping is now handled generically.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
As per an ancient comment in mips_tr_translate_insn about the
expectations of gdb, when restarting the insn in a delay slot
we also re-execute the branch. Which means that we are
expected to execute two insns in this case.
This has been broken since 8b86d6d258, where we forced max_insns
to 1 while single-stepping. This resulted in an exit from the
translator loop after the branch but before the delay slot is
translated.
Increase the max_insns to 2 for this case. In addition, bypass
the end-of-page check, for when the branch itself ends the page.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Rather than use 4-16 separate operations, use 2 operations
plus some byte reordering as necessary.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We should not have been using the helper_ret_* set of
functions, as they are supposed to be private to tcg.
Nor should we have been using the plain cpu_*_data set
of functions, as they do not handle unwinding properly.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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>
While we may have had some thought of allowing system-mode
to return from this hook, we have no guests that require this.
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
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>
Restrict cpu_exec_interrupt() and its callees to sysemu.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210911165434.531552-15-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
[rth: Split out of a larger patch.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Add the inlined cpu_is_bigendian() function in "translate.h".
Replace the TARGET_WORDS_BIGENDIAN #ifdef'ry by calls to
cpu_is_bigendian().
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210818164321.2474534-6-f4bug@amsat.org>
Most TCG helpers only have access to a DisasContext pointer,
not CPUMIPSState. Store a copy of CPUMIPSState::CP0_Config0
in DisasContext so we can access it from TCG helpers.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210818164321.2474534-5-f4bug@amsat.org>
The target endianess information is stored in the BigEndian
bit of the Config0 register in CP0.
Replace the GET_LMASK() macro by an inlined get_lmask() function,
passing CPUMIPSState and the word size as argument.
We can remove another use of the TARGET_WORDS_BIGENDIAN definition.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210818215517.2560994-4-f4bug@amsat.org>
The target endianess information is stored in the BigEndian
bit of the Config0 register in CP0.
Replace the GET_LMASK() macro by an inlined get_lmask() function,
passing CPUMIPSState and the word size as argument.
We can remove one use of the TARGET_WORDS_BIGENDIAN definition.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210818215517.2560994-3-f4bug@amsat.org>
The target endianess information is stored in the BigEndian
bit of the Config0 register in CP0.
As a first step, inline the GET_OFFSET() macro, calling
cpu_is_bigendian() to get the 'direction' of the offset.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210818215517.2560994-2-f4bug@amsat.org>
To be able to split some code calling the gen_helper() macros
out of the huge translate.c, we need to define them in the
'translate.h' local header.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210816205107.2051495-9-f4bug@amsat.org>
excp/err are temporaries input, so we can replace tcg_const_i32()
calls by tcg_constant_i32() equivalent.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210816205107.2051495-8-f4bug@amsat.org>
gen_helper_0e0i() is one-line long and is only used twice:
simply inline it.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210816205107.2051495-7-f4bug@amsat.org>
gen_helper_1e1i() is one-line long and is used in one place:
simply inline it.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210816205107.2051495-6-f4bug@amsat.org>
In all call sites the last argument is always used as a
read-only value, so we can replace tcg_const_i32() temporary
by tcg_constant_i32().
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210816205107.2051495-5-f4bug@amsat.org>
$rt register is used read-only, so we can replace tcg_const_i32()
temporary by tcg_constant_i32().
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210816205107.2051495-4-f4bug@amsat.org>
gen_helper_1e2i() is unused since commit 33a07fa2db
("target/mips: reimplement SC instruction emulation
and use cmpxchg"), remove it.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210816205107.2051495-3-f4bug@amsat.org>
gen_helper_0e3i() is unused since commit 895c2d0435
("target-mips: switch to AREG0 free mode"), remove it.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210816205107.2051495-2-f4bug@amsat.org>
We already call check_cp1_enabled() earlier in the "pre-conditions"
checks for GSLWXC1 and GSLDXC1 in gen_loongson_lsdc2() prologue.
Remove the duplicated calls.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Message-Id: <20210816001031.1720432-1-f4bug@amsat.org>
Convert the following Integer Multiply-Accumulate opcodes:
* MSAC Multiply, negate, accumulate, and move LO
* MSACHI Multiply, negate, accumulate, and move HI
* MSACHIU Unsigned multiply, negate, accumulate, and move HI
* MSACU Unsigned multiply, negate, accumulate, and move LO
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210808173018.90960-8-f4bug@amsat.org>
Convert the following Integer Multiply-Accumulate opcodes:
* MULHI Multiply and move HI
* MULHIU Unsigned multiply and move HI
* MULS Multiply, negate, and move LO
* MULSHI Multiply, negate, and move HI
* MULSHIU Unsigned multiply, negate, and move HI
* MULSU Unsigned multiply, negate, and move LO
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210808173018.90960-7-f4bug@amsat.org>
Convert the following Integer Multiply-Accumulate opcodes:
* MACC Multiply, accumulate, and move LO
* MACCHI Multiply, accumulate, and move HI
* MACCHIU Unsigned multiply, accumulate, and move HI
* MACCU Unsigned multiply, accumulate, and move LO
Since all opcodes are generated using the same pattern, we
add the gen_helper_mult_acc_t typedef and MULT_ACC() macro
to remove boilerplate code.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210808173018.90960-6-f4bug@amsat.org>
The decoder is called but doesn't decode anything. This will
ease reviewing the next commit.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210801235926.3178085-3-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Extract NEC Vr54xx helpers from op_helper.c to a new file:
'vr54xx_helper.c'.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201120210844.2625602-14-f4bug@amsat.org>
Extract the NEC Vr54xx helper definitions to
'vendor-vr54xx_helper.h'.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201120210844.2625602-15-f4bug@amsat.org>
Plain copy/paste of the TRANS() macro introduced in the PPC
commit f2aabda8ac ("target/ppc: Move D/DS/X-form integer
loads to decodetree") to the MIPS target.
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210808173018.90960-2-f4bug@amsat.org>
We'll soon have more opcode and decoded arguments, and 'rtype'
is not very helpful. Naming it simply 'r' ease reviewing the
.decode files when we have many opcodes.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210801234202.3167676-5-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
We don't need to maintain 2 sets of decodetree definitions.
Merge them into a single file.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210801234202.3167676-4-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
In commit ffc672aa97 ("target/mips/tx79: Move MFHI1 / MFLO1
opcodes to decodetree") we misplaced the decoder call. Move
it to the correct place.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210801234202.3167676-3-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
check_insn() checks for any bit in the set, and INSN_R5900 is
just another bit added to the set. No need to special-case it.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210801234202.3167676-2-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
JR opcode (Jump Register) only takes 1 argument, $rs.
JALR (Jump And Link Register) takes 3: $rs, $rd and $hint.
Commit 6af0bf9c7c added their processing into decode_opc() as:
case 0x08 ... 0x09: /* Jumps */
gen_compute_branch(ctx, op1 | EXT_SPECIAL, rs, rd, sa);
having both opcodes handled in the same function: gen_compute_branch.
Per JR encoding, both $rd and $hint ('sa') are decoded as zero.
Later this code got extracted to decode_opc_special(),
commit 7a387fffce used definitions instead of magic values:
case OPC_JR ... OPC_JALR:
gen_compute_branch(ctx, op1, rs, rd, sa);
Finally commit 0aefa33318 moved OPC_JR out of decode_opc_special,
to a new 'decode_opc_special_legacy' function:
@@ -15851,6 +15851,9 @@ static void decode_opc_special_legacy(CPUMIPSState *env, DisasContext *ctx)
+ case OPC_JR:
+ gen_compute_branch(ctx, op1, 4, rs, rd, sa);
+ break;
@@ -15933,7 +15936,7 @@ static void decode_opc_special(CPUMIPSState *env, DisasContext *ctx)
- case OPC_JR ... OPC_JALR:
+ case OPC_JALR:
gen_compute_branch(ctx, op1, 4, rs, rd, sa);
break;
Since JR is now handled individually, it is pointless to decode
and pass it unused arguments. Replace them by simple zero value
to avoid confusion with this opcode.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210730225507.2642827-1-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
The hook is now unused, with breakpoints checked outside translation.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Linking on Haiku OS fails:
/boot/system/develop/tools/bin/../lib/gcc/x86_64-unknown-haiku/8.3.0/../../../../x86_64-unknown-haiku/bin/ld:
error: libqemu-mips-softmmu.fa.p/target_mips_tcg_sysemu_mips-semi.c.o(.rodata) is too large (0xffff405a bytes)
/boot/system/develop/tools/bin/../lib/gcc/x86_64-unknown-haiku/8.3.0/../../../../x86_64-unknown-haiku/bin/ld:
final link failed: memory exhausted
collect2: error: ld returned 1 exit status
This is because the host_to_mips_errno[] uses errno as index,
for example:
static const uint16_t host_to_mips_errno[] = {
[ENAMETOOLONG] = 91,
...
and Haiku defines [*] ENAMETOOLONG as:
12 /* Error baselines */
13 #define B_GENERAL_ERROR_BASE INT_MIN
..
22 #define B_STORAGE_ERROR_BASE (B_GENERAL_ERROR_BASE + 0x6000)
...
106 #define B_NAME_TOO_LONG (B_STORAGE_ERROR_BASE + 4)
...
211 #define ENAMETOOLONG B_TO_POSIX_ERROR(B_NAME_TOO_LONG)
so the array ends up beeing indeed too big.
Since POSIX errno can't be use as indexes on Haiku,
rewrite errno_mips() using a switch statement.
[*] https://github.com/haiku/haiku/blob/r1beta3/headers/os/support/Errors.h#L130
Reported-by: Richard Zak <richard.j.zak@gmail.com>
Suggested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210706130723.1178961-1-f4bug@amsat.org>
Introduce the SQ opcode (Store Quadword).
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210214175912.732946-27-f4bug@amsat.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Introduce the LQ opcode (Load Quadword) and remove unreachable code.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210214175912.732946-26-f4bug@amsat.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Introduce the PPACW opcode (Parallel Pack to Word).
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210214175912.732946-22-f4bug@amsat.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Introduce the 'Parallel Compare for Greater Than' opcodes:
- PCGTB (Parallel Compare for Greater Than Byte)
- PCGTH (Parallel Compare for Greater Than Halfword)
- PCGTW (Parallel Compare for Greater Than Word)
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210309145653.743937-15-f4bug@amsat.org>
Introduce the PEXTUW opcode (Parallel Extend Upper from Word).
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210309145653.743937-12-f4bug@amsat.org>
Do not emit dead code for the singlestep_enabled case,
after having exited the TB with a debug exception.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Just use translator_use_goto_tb directly at the one call site,
rather than maintaining a local wrapper.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The root trace-events only declares a single TCG event:
$ git grep -w tcg trace-events
trace-events:115:# tcg/tcg-op.c
trace-events:137:vcpu tcg guest_mem_before(TCGv vaddr, uint16_t info) "info=%d", "vaddr=0x%016"PRIx64" info=%d"
and only a tcg/tcg-op.c uses it:
$ git grep -l trace_guest_mem_before_tcg
tcg/tcg-op.c
therefore it is pointless to include "trace-tcg.h" in each target
(because it is not used). Remove it.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210629050935.2570721-1-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Extract 4900 lines from the huge translate.c to a new file,
'nanomips_translate.c.inc'. As there are too many inter-
dependencies we don't compile it as another object, but
keep including it in the big translate.o. We gain in code
maintainability.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201120210844.2625602-13-f4bug@amsat.org>
Extract 3200+ lines from the huge translate.c to a new file,
'micromips_translate.c.inc'. As there are too many inter-
dependencies we don't compile it as another object, but
keep including it in the big translate.o. We gain in code
maintainability.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201120210844.2625602-12-f4bug@amsat.org>
Extract 1100+ lines from the huge translate.c to a new file,
'mips16e_translate.c.inc'. As there are too many inter-
dependencies we don't compile it as another object, but
keep including it in the big translate.o. We gain in code
maintainability.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201120210844.2625602-10-f4bug@amsat.org>
We want to extract the microMIPS ISA and Code Compaction ASE to
new compilation units.
We will first extract this code as included source files (.c.inc),
then make them new compilation units afterward.
The following methods are going to be used externally:
micromips_translate.c.inc:1778: gen_ldxs(ctx, rs, rt, rd);
micromips_translate.c.inc:1806: gen_align(ctx, 32, rd, rs, ...
micromips_translate.c.inc:2859: gen_addiupc(ctx, reg, offset, ...
mips16e_translate.c.inc:444: gen_addiupc(ctx, ry, offset, ...
To avoid too much code churn, it is simpler to declare these
prototypes in "translate.h" now.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210617174907.2904067-2-f4bug@amsat.org>
There were two bugs here: (1) the required endianness was
not present in the MemOp, and (2) we were not providing a
zero-extended input to the bswap as semantics required.
The best fix is to fold the bswap into the memory operation,
producing the desired result directly.
Acked-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Implement the new semantics in the fallback expansion.
Change all callers to supply the flags that keep the
semantics unchanged locally.
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>
We don't need to maintain 2 sets of decodetree definitions.
Merge them into a single file.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210617174636.2902654-3-f4bug@amsat.org>
Only trans_MSA() calls gen_msa(), inline it to simplify.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210617174636.2902654-2-f4bug@amsat.org>
Since all entries are no more than 3/4/6 bytes (including nul
terminator), can save space and pie runtime relocations by
declaring regnames[] as array of 3/4/6 const char.
Inspired-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210617174323.2900831-10-f4bug@amsat.org>
Keep host_to_mips_errno[] in .rodata by marking the array const.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210617174323.2900831-9-f4bug@amsat.org>
Per the "MIPS® Architecture Extension: nanoMIPS32 DSP Technical
Reference Manual — Revision 0.04" p. 88 "BPOSGE32C", offset argument (imm)
should be left-shifted first.
This change was tested against test_dsp_r1_bposge32.c DSP test.
Reported-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>
Signed-off-by: Filip Vidojevic <filip.vidojevic@syrmia.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <VI1PR0302MB34869449EE56F226FC3C21129C309@VI1PR0302MB3486.eurprd03.prod.outlook.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
These switch cases for the microMIPS BPOSGE32 / BPOSGE64 opcodes have
been added commit 3c824109da ("target-mips: microMIPS ASE support").
More than 11 years later it is safe to assume there won't be added
soon. The cases fall back to the default which generates a RESERVED
INSTRUCTION, so it is safe to remove them.
Functionally speaking, the patch is a no-op.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210617174323.2900831-8-f4bug@amsat.org>
These placeholder comments for SmartMIPS and MDMX extensions have
been added commit 3c824109da ("target-mips: microMIPS ASE support").
More than 11 years later it is safe to assume there won't be added
soon, so remove these unuseful comments.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210617174323.2900831-7-f4bug@amsat.org>
We moved various TCG source files in commit a2b0a27d33
("target/mips: Move TCG source files under tcg/ sub directory")
but forgot to move the header declaring their prototypes.
Do it now, since all it declares is TCG specific.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210617174323.2900831-5-f4bug@amsat.org>
Commit a2b0a27d33 ("target/mips: Move TCG source files under
tcg/ sub directory") forgot to move the trace-event file.
As it only contains TCG events, move it for consistency.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210617174323.2900831-4-f4bug@amsat.org>
On real hardware an invalid instruction doesn't halt the world,
but usually triggers a RESERVED INSTRUCTION exception.
TCG guest code shouldn't abort QEMU anyway.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210617174323.2900831-2-f4bug@amsat.org>
Per the "MIPS® DSP Module for MIPS64 Architecture" manual, rev. 3.02,
Table 5.3 "SPECIAL3 Encoding of Function Field for DSP Module":
If the Module/ASE is not implemented, executing such an instruction
must cause a Reserved Instruction Exception.
The DINSV instruction lists the following exceptions:
- Reserved Instruction
- DSP Disabled
If the MIPS core doesn't support the DSP module, or the DSP is
disabled, do not handle the '$rt = $0' case as a no-op but raise
the proper exception instead.
Cc: Jia Liu <proljc@gmail.com>
Fixes: 1cb6686cf9 ("target-mips: Add ASE DSP bit/manipulation instructions")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210529165443.1114402-1-f4bug@amsat.org>
Fix multiple TCG temporary leaks in gen_pool32a5_nanomips_insn().
Fixes: 3285a3e444 ("target/mips: Add emulation of DSP ASE for nanoMIPS - part 1")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210617174323.2900831-3-f4bug@amsat.org>
Fix a pair of TCG temporary leak when translating nanoMIPS SHILO opcode.
Fixes: 3285a3e444 ("target/mips: Add emulation of DSP ASE for nanoMIPS")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210530094538.1275329-1-f4bug@amsat.org>
Use the BIT_ULL() macro to ensure we use 64-bit arithmetic.
This fixes the following Coverity issue (OVERFLOW_BEFORE_WIDEN):
CID 1452921: Integer handling issues:
Potentially overflowing expression "1 << w" with type "int"
(32 bits, signed) is evaluated using 32-bit arithmetic, and
then used in a context that expects an expression of type
"uint64_t" (64 bits, unsigned).
Fixes: 074cfcb4da ("target/mips: Implement hardware page table walker")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210505215119.1517465-1-f4bug@amsat.org>
Add a flag to MIPSCPUClass in order to avoid needing to
replace mips_tcg_ops.do_transaction_failed.
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20210227232519.222663-2-richard.henderson@linaro.org>
To ease maintenance, move all TCG specific files under the tcg/
sub-directory. Adapt the Meson machinery.
The following prototypes:
- mips_tcg_init()
- mips_cpu_do_unaligned_access()
- mips_cpu_do_transaction_failed()
can now be restricted to the "tcg-internal.h" header.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-29-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-27-f4bug@amsat.org>
Move helper_cache() to tcg/sysemu/special_helper.c.
The CACHE opcode is privileged and is not accessible in user
emulation. However we get a link failure when restricting the
symbol to sysemu. For now, add a stub helper to satisfy linking,
which abort if ever called.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-25-f4bug@amsat.org>
Move the Special opcodes helpers to tcg/sysemu/special_helper.c.
Since mips_io_recompile_replay_branch() is set as
CPUClass::io_recompile_replay_branch handler in cpu.c,
we need to declare its prototype in "tcg-internal.h".
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-24-f4bug@amsat.org>
The 3 map_address() handlers are local to tlb_helper.c,
no need to have their prototype declared publically.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-23-f4bug@amsat.org>
Move tlb_helper.c to the tcg/sysemu/ subdir, along with
the following 3 declarations to tcg-internal.h:
- cpu_mips_tlb_flush()
- cpu_mips_translate_address()
- r4k_invalidate_tlb()
Simplify tlb_helper.c #ifdef'ry because files in tcg/sysemu/
are only build when sysemu mode is configured.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-22-f4bug@amsat.org>
mmu_init() is only required by TCG accelerator.
Restrict its declaration and call to TCG.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-21-f4bug@amsat.org>
Move cp0_helper.c and mips-semi.c to the new tcg/sysemu/ folder,
adapting the Meson machinery.
Move the opcode definitions to tcg/sysemu_helper.h.inc.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-20-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-19-f4bug@amsat.org>
tlb_helper.c's #ifdef'ry hides a quite simple user-mode
implementation of mips_cpu_tlb_fill().
Copy the user-mode implementation (without #ifdef'ry) to
tcg/user/helper.c and simplify tlb_helper.c's #ifdef'ry.
This will allow us to restrict tlb_helper.c to sysemu.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-15-f4bug@amsat.org>
The #ifdef'ry hides that the user-mode implementation of
mips_cpu_do_interrupt() simply sets exception_index = EXCP_NONE.
Add this simple implementation to tcg/user/tlb_helper.c, and
the corresponding Meson machinery to build this file when user
emulation is configured.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-14-f4bug@amsat.org>
We will gradually move TCG-specific declarations to a new local
header: "tcg-internal.h". To keep review simple, first add this
header with 2 TCG prototypes, which we are going to move in the
next 2 commits.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-13-f4bug@amsat.org>
