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2024-04-09target/m68k: Map FPU exceptions to FPSR registerKeith Packard
Add helpers for reading/writing the 68881 FPSR register so that changes in floating point exception state can be seen by the application. Call these helpers in pre_load/post_load hooks to synchronize exception state. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230803035231.429697-1-keithp@keithp.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-03-12target/m68k: Prefer fast cpu_env() over slower CPU QOM cast macroPhilippe Mathieu-Daudé
Mechanical patch produced running the command documented in scripts/coccinelle/cpu_env.cocci_template header. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20240129164514.73104-17-philmd@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-02-03target/m68k: Use TCG_COND_TST{EQ,NE} in gen_fcc_condRichard Henderson
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-01-29include/exec: Use vaddr in DisasContextBase for virtual addressesAnton Johansson
Updates target/ QEMU_LOG macros to use VADDR_PRIx for printing updated DisasContextBase fields. Signed-off-by: Anton Johansson <anjo@rev.ng> Message-Id: <20240119144024.14289-10-anjo@rev.ng> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-01-29target: Use vaddr in gen_intermediate_codeAnton Johansson
Makes gen_intermediate_code() signature target agnostic so the function can be called from accel/tcg/translate-all.c without target specifics. Signed-off-by: Anton Johansson <anjo@rev.ng> Message-Id: <20240119144024.14289-9-anjo@rev.ng> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-22target/m68k: Use tcg_gen_ext_i32Richard Henderson
We still need to check OS_{BYTE,WORD,LONG}, because m68k includes floating point in OS_*. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-04accel/tcg: Replace CPUState.env_ptr with cpu_env()Richard Henderson
Reviewed-by: Anton Johansson <anjo@rev.ng> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-03tcg: Rename cpu_env to tcg_envRichard Henderson
Allow the name 'cpu_env' to be used for something else. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-29target/m68k: Clean up local variable shadowingPhilippe Mathieu-Daudé
Fix: target/m68k/translate.c:828:18: error: declaration shadows a local variable [-Werror,-Wshadow] TCGv tmp = tcg_temp_new(); ^ target/m68k/translate.c:801:15: note: previous declaration is here TCGv reg, tmp, result; ^ Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-ID: <20230904161235.84651-6-philmd@linaro.org> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2023-08-31target/translate: Remove unnecessary 'exec/cpu_ldst.h' headerPhilippe Mathieu-Daudé
All these files only access the translator_ld/st API declared in "exec/translator.h". The CPU ld/st API from declared in "exec/cpu_ldst.h" is not used, remove it. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230828221314.18435-5-philmd@linaro.org>
2023-08-24target/m68k: Use tcg_gen_negsetcond_*Richard Henderson
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-24target/m68k: Use tcg_gen_deposit_i32 in gen_partset_regRichard Henderson
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-06-20target/m68k: Check for USER_ONLY definition instead of SOFTMMU onePhilippe Mathieu-Daudé
Since we *might* have user emulation with softmmu, replace the system emulation check by !user emulation one. Invert some if() ladders for clarity. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230613133347.82210-4-philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-06-05accel/tcg: Introduce translator_io_startRichard Henderson
New wrapper around gen_io_start which takes care of the USE_ICOUNT check, as well as marking the DisasContext to end the TB. Remove exec/gen-icount.h. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-06-05tcg: Pass TCGHelperInfo to tcg_gen_callNRichard Henderson
In preparation for compiling tcg/ only once, eliminate the all_helpers array. Instantiate the info structs for the generic helpers in accel/tcg/, and the structs for the target-specific helpers in each translate.c. Since we don't see all of the info structs at startup, initialize at first use, using g_once_init_* to make sure we don't race while doing so. Reviewed-by: Anton Johansson <anjo@rev.ng> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-05-11target/m68k: Fix gen_load_fp for OS_LONGRichard Henderson
Case was accidentally dropped in b7a94da9550b. Tested-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-05-05target/m68k: Finish conversion to tcg_gen_qemu_{ld,st}_*Richard Henderson
Convert away from the old interface with the implicit MemOp argument. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Anton Johansson <anjo@rev.ng> Message-Id: <20230502135741.1158035-5-richard.henderson@linaro.org>
2023-03-13target/m68k: Use tcg_constant_i32 in gen_ea_modeRichard Henderson
Return a constant for an immediate input. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-13target/m68k: Avoid tcg_const_* throughoutRichard Henderson
All remaining uses are strictly read-only. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-13target/m68k: Avoid tcg_const_i32 in bfop_regRichard Henderson
Tidy up the whole function, hoisting is_bfffo as a common test for whether tlen and tofs needed. Use tcg_constant_i32, and load a separate temporary for mask. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-13target/m68k: Avoid tcg_const_i32 when modifiedRichard Henderson
In several instances, a temp is initialized with a for use as a constant, and then subsequently used as an unrelated temp. Split them. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-05target/m68k: Drop tcg_temp_freeRichard Henderson
Translators are no longer required to free tcg temporaries. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-05target/m68k: Drop free_condRichard Henderson
Translators are no longer required to free tcg temporaries. Remove the g1 and g2 members of DisasCompare, as they were used to track which temps needed to be freed. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-05target/m68k: Drop mark_to_releaseRichard Henderson
Translators are no longer required to free tcg temporaries, therefore there's no need to record temps for later freeing. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-01accel/tcg: Pass max_insn to gen_intermediate_code by pointerRichard Henderson
In preparation for returning the number of insns generated via the same pointer. Adjust only the prototypes so far. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-02-01m68k: fix 'bkpt' instruction in softmmu modeLaurent Vivier
In linux-user mode, 'bkpt' generates an EXP_DEBUG exception to allow QEMU gdb server to intercept and manage the operation with an external debugger. In softmmu mode, the instruction must generate an illegal instruction exception as it is on real hardware to be managed by the kernel. Buglink: https://gitlab.com/qemu-project/qemu/-/issues/1462 Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230126125234.3186042-1-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-11-05target/m68k: Rename qregs.def -> qregs.h.incPhilippe Mathieu-Daudé
We use the .h.inc extension to include C headers. To be consistent with the rest of the codebase, rename the C headers using the .def extension. IDE/tools using our .editorconfig / .gitattributes will leverage this consistency. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20221025235006.7215-2-philmd@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-10-26target/m68k: Convert to tcg_ops restore_state_to_opcRichard Henderson
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-26target/m68k: use M68K_FEATURE_MOVEFROMSR_PRIV feature for move_from_sr ↵Mark Cave-Ayland
privilege check Now that M68K_FEATURE_M68000 has been renamed to M68K_FEATURE_M68K it is easier to see that the privilege exception check is wrong: it is currently only generated for ColdFire CPUs when in fact it should also be generated for Motorola CPUs from the 68010 onwards. Introduce a new M68K_FEATURE_MOVEFROMSR_PRIV feature which is set for all non- Motorola CPUs, and for all Motorola CPUs from the 68010 onwards and use it to determine whether a privilege exception should be generated for the MOVE-from-SR instruction. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220925134804.139706-3-mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-21target/m68k: always call gen_exit_tb() after writes to SRMark Cave-Ayland
Any write to SR can change the security state so always call gen_exit_tb() when this occurs. In particular MacOS makes use of andiw/oriw in a few places to handle the switch between user and supervisor mode. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220917112515.83905-5-mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-21target/m68k: rename M68K_FEATURE_M68000 to M68K_FEATURE_M68KMark Cave-Ayland
The M68K_FEATURE_M68000 feature is misleading in that its name suggests the feature is defined just for Motorola 68000 CPUs, whilst in fact it is defined for all Motorola 680X0 CPUs. In order to avoid confusion with the other M68K_FEATURE_M680X0 constants which define the features available for specific Motorola CPU models, rename M68K_FEATURE_M68000 to M68K_FEATURE_M68K and add comments to clarify its usage. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220917112515.83905-2-mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-21target/m68k: Perform writback before modifying SRRichard Henderson
Writes to SR may change security state, which may involve a swap of %ssp with %usp as reflected in %a7. Finish the writeback of %sp@+ before swapping stack pointers. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1206 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Message-Id: <20220913142818.7802-3-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-21target/m68k: Fix MACSR to CCRRichard Henderson
First, we were writing to the entire SR register, instead of only the flags portion. Second, we were not clearing C as per the documentation (X was cleared via the 0xf mask). Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220913142818.7802-2-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-21target/m68k: Implement atomic test-and-setRichard Henderson
This is slightly more complicated than cas, because tas is allowed on data registers. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220829051746.227094-1-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-06accel/tcg: Add pc and host_pc params to gen_intermediate_codeRichard Henderson
Pass these along to translator_loop -- pc may be used instead of tb->pc, and host_pc is currently unused. Adjust all targets at one time. Acked-by: Alistair Francis <alistair.francis@wdc.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-02target/m68k: Implement FTRAPccRichard Henderson
Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-14-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02target/m68k: Implement TRAPVRichard Henderson
Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-13-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02target/m68k: Implement TPF in terms of TRAPccRichard Henderson
TPF stands for "trap false", and is a long-form nop for ColdFire. Re-use the immediate consumption code from trapcc; the insn will already expand to a nop because of the TCG_COND_NEVER test within do_trapcc. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-12-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02target/m68k: Implement TRAPccRichard Henderson
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/754 Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-11-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02target/m68k: Fix address argument for EXCP_TRACERichard Henderson
According to the M68040 Users Manual, section 8.4.3, Six word stack frame (format 2), Trace (and others) is supposed to record the next insn in PC and the address of the trapping instruction in ADDRESS. Create gen_raise_exception_format2 to record the trapping pc in env->mmu.ar. Update m68k_interrupt_all to pass the value to do_stack_frame. Update cpu_loop to handle EXCP_TRACE. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-9-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02target/m68k: Fix pc, c flag, and address argument for EXCP_DIV0Richard Henderson
According to the M68040 Users Manual, section 8.4.3, Six word stack frame (format 2), Zero Div (and others) is supposed to record the next insn in PC and the address of the trapping instruction in ADDRESS. While the N, Z and V flags are documented to be undefine on DIV0, the C flag is documented as always cleared. Update helper_div* to take the instruction length as an argument and use raise_exception_format2. Hoist the reset of the C flag above the division by zero check. Update m68k_interrupt_all to pass mmu.ar to do_stack_frame. Update cpu_loop to pass mmu.ar to siginfo.si_addr, as the kernel does in trap_c(). Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-8-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02target/m68k: Raise the TRAPn exception with the correct pcRichard Henderson
Rather than adjust the PC in all of the consumers, raise the exception with the correct PC in the first place. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-2-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-05-26target/m68k: Enable halt insn for 68060Richard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220430170225.326447-3-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-04-20exec/translator: Pass the locked filepointer to disas_log hookRichard Henderson
We have fetched and locked the logfile in translator_loop. Pass the filepointer down to the disas_log hook so that it need not be fetched and locked again. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220417183019.755276-13-richard.henderson@linaro.org>
2021-10-15target/m68k: Drop checks for singlestep_enabledRichard Henderson
GDB single-stepping is now handled generically. Acked-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-09-14accel/tcg: Add DisasContextBase argument to translator_ld*Ilya Leoshkevich
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>
2021-07-21accel/tcg: Remove TranslatorOps.breakpoint_checkRichard Henderson
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>
2021-07-09target/m68k: Use translator_use_goto_tbRichard Henderson
Just use translator_use_goto_tb directly at the one call site, rather than maintaining a local wrapper. Acked-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-07-09tcg: Avoid including 'trace-tcg.h' in target translate.cPhilippe Mathieu-Daudé
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>
2021-05-26target/m68k: implement m68k "any instruction" trace modeMark Cave-Ayland
The m68k trace mode is controlled by the top 2 bits in the SR register. Implement the m68k "any instruction" trace mode where bit T1=1 and bit T0=0 in which the CPU generates an EXCP_TRACE exception (vector 9 or offset 0x24) after executing each instruction. This functionality is used by the NetBSD kernel debugger to allow single-stepping on m68k architectures. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210519142917.16693-5-mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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