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2012-12-22target-xtensa: fix search_pc for the last TB opcodeMax Filippov
Zero out tcg_ctx.gen_opc_instr_start for instructions representing the last guest opcode in the TB. Cc: qemu-stable@nongnu.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-19softmmu: move include files to include/sysemu/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19misc: move include files to include/qemu/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19qom: move include files to include/qom/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19exec: move include files to include/exec/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19build: kill libdis, move disassemblers to disas/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-16exec: refactor cpu_restore_stateBlue Swirl
Refactor common code around calls to cpu_restore_state(). tb_find_pc() has now no external users, make it static. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-15target-xtensa: fix ITLB/DTLB page protection flagsMax Filippov
With MMU option xtensa architecture has two TLBs: ITLB and DTLB. ITLB is only used for code access, DTLB is only for data. However TLB entries in both TLBs have attribute field controlling write and exec access. These bits need to be properly masked off depending on TLB type before being used as tlb_set_page prot argument. Otherwise the following happens: (1) ITLB entry for some PFN gets invalidated (2) DTLB entry for the same PFN gets updated, attributes allow code execution (3) code at the page with that PFN is executed (possible due to step 2), entry for the TB is written into the jump cache (4) QEMU TLB entry for the PFN gets replaced with an entry for some other PFN (5) code in the TB from step 3 is executed (possible due to jump cache) and it accesses data, for which there's no DTLB entry, causing DTLB miss exception (6) re-translation of the TB from step 5 is attempted, but there's no QEMU TLB entry nor xtensa ITLB entry for that PFN, which causes ITLB miss exception at the TB start address (7) ITLB miss exception is handled by the guest, but execution is resumed from the beginning of the faulting TB (the point where ITLB miss occured), not from the point where DTLB miss occured, which is wrong. With that fix the above scenario causes ITLB miss exception (that used to be step 7) at step 3, right at the beginning of the TB. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Cc: qemu-stable@nongnu.org Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08target-xtensa: use movcond where possibleMax Filippov
Use movcond for all sorts of conditional moves, ABS, CLAMPS, MIN/MAX opcodes. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08target-xtensa: implement MISC SRMax Filippov
The Miscellaneous Special Registers Option provides zero to four scratch registers within the processor readable and writable by RSR, WSR, and XSR. These registers are privileged. They may be useful for some application-specific exception and interrupt processing tasks in the kernel. The MISC registers are undefined after reset. See ISA, 4.7.3 for details. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08target-xtensa: better control rsr/wsr/xsr access to SRsMax Filippov
There are read-only (DEBUGCAUSE, PRID) and write-only (INTCLEAR) SRs, and INTERRUPT/INTSET SR allows rsr/wsr, but not xsr. Raise illeagal opcode exception on illegal access to these SRs. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08target-xtensa: restrict available SRs by enabled optionsMax Filippov
Beginning with the RA-2004.1 release, SR access instructions (rsr, wsr, xsr) are associated with their corresponding SR and raise illegal opcode exception in case the register is not configured for the core. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08target-xtensa: implement CACHEATTR SRMax Filippov
In XEA1, the Options for Memory Protection and Translation and the corresponding TLB management instructions are not available. Instead, functionality similar to the Region Protection Option is available through the cache attribute register. See ISA, A.2.14 for details. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08target-xtensa: implement ATOMCTL SRMax Filippov
ATOMCTL SR controls s32c1i opcode behavior depending on targeted memory type. See ISA, 4.3.12.4 for details. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08TCG: Use gen_opc_instr_start from context instead of global variable.Evgeny Voevodin
Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08TCG: Use gen_opc_icount from context instead of global variable.Evgeny Voevodin
Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08TCG: Use gen_opc_pc from context instead of global variable.Evgeny Voevodin
Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-11-17TCG: Use gen_opc_buf from context instead of global variable.Evgeny Voevodin
Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-11-17TCG: Use gen_opc_ptr from context instead of global variable.Evgeny Voevodin
Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-11-10target-xtensa: avoid using cpu_single_envBlue Swirl
Pass around CPUArchState instead of using global cpu_single_env. Signed-off-by: Blue Swirl <blauwirbel@gmail.com> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Reviewed-by: Andreas Färber <afaerber@suse.de>
2012-10-31cpus: Pass CPUState to [qemu_]cpu_has_work()Andreas Färber
For target-mips also change the return type to bool. Make include paths for cpu-qom.h consistent for alpha and unicore32. Signed-off-by: Andreas Färber <afaerber@suse.de> [AF: Updated new target-openrisc function accordingly] Acked-by: Richard Henderson <rth@twiddle.net> (for alpha)
2012-10-28target-xtensa: rename helper flagsAurelien Jarno
Rename helper flags to the new ones. This is purely a mechanical change, it's possible to use better flags by looking at the helpers. Cc: Max Filippov <jcmvbkbc@gmail.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-10-23Rename target_phys_addr_t to hwaddrAvi Kivity
target_phys_addr_t is unwieldly, violates the C standard (_t suffixes are reserved) and its purpose doesn't match the name (most target_phys_addr_t addresses are not target specific). Replace it with a finger-friendly, standards conformant hwaddr. Outstanding patchsets can be fixed up with the command git rebase -i --exec 'find -name "*.[ch]" | xargs s/target_phys_addr_t/hwaddr/g' origin Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-06target-xtensa: de-optimize EXTUIAurelien Jarno
Now that "and" with 0xff, 0xffff and 0xffffffff and "shr" with 0 shift are optimized in tcg/tcg-op.h there is no need to do it in target-xtensa/translate.c. Acked-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-27Emit debug_insn for CPU_LOG_TB_OP_OPT as well.Richard Henderson
For all targets that currently call tcg_gen_debug_insn_start, add CPU_LOG_TB_OP_OPT to the condition that gates it. This is useful for comparing optimization dumps, when the pre-optimization dump is merely noise. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2012-09-22target-xtensa: implement coprocessor context optionMax Filippov
In case Coprocessor Context option is enabled CPENABLE SR bits control whether access to coprocessors is allowed or would rise one of CoprocessorXDisabled exceptions. See ISA, 4.4.5 for more details. FP is coprocessor 0. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-22target-xtensa: implement FP1 groupMax Filippov
These are comparison and conditional move opcodes. See ISA, 4.3.10 for more details. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-22target-xtensa: implement FP0 conversionsMax Filippov
These are FP to integer and integer to FP conversion opcodes. See ISA, 4.3.10 for more details. Note that ISA description for utrunc.s is currently incorrect and will be fixed in future revisions. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-22target-xtensa: implement FP0 arithmeticMax Filippov
These are FP arithmetic opcodes. See ISA, 4.3.10 for more details. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-22target-xtensa: implement LSCX and LSCI groupsMax Filippov
These are load/store instructions for FP registers with immediate or register index and optional base post-update. See ISA, 4.3.10 for more details. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-22target-xtensa: add FP registersMax Filippov
There are 16 32-bit FP registers (f0 - f15), control and status user registers (fcr, fsr). See ISA, 4.3.10 for more details. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-22target-xtensa: handle boolean option in overlaysMax Filippov
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-21target-xtensa: don't emit extra tcg_gen_goto_tbMax Filippov
Unconditional gen_check_loop_end at the end of disas_xtensa_insn can emit tcg_gen_goto_tb with slot id already used in the TB (e.g. when TB ends at LEND with a branch). Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Cc: qemu-stable <qemu-stable@nongnu.org> Signed-off-by: malc <av1474@comtv.ru>
2012-09-21target-xtensa: fix extui shift amountMax Filippov
extui opcode only uses lowermost op1 bit for sa4. Reported-by: malc <av1474@comtv.ru> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Cc: qemu-stable <qemu-stable@nongnu.org> Signed-off-by: malc <av1474@comtv.ru>
2012-09-08target-xtensa: fix missing errno codes for mingw32Max Filippov
Put the following errno value mappings under #ifdef: xtensa-semi.c: In function 'errno_h2g': xtensa-semi.c:113: error: 'ENOTBLK' undeclared (first use in this function) xtensa-semi.c:113: error: (Each undeclared identifier is reported only once xtensa-semi.c:113: error: for each function it appears in.) xtensa-semi.c:113: error: array index in initializer not of integer type xtensa-semi.c:113: error: (near initialization for 'guest_errno') xtensa-semi.c:124: error: 'ETXTBSY' undeclared (first use in this function) xtensa-semi.c:124: error: array index in initializer not of integer type xtensa-semi.c:124: error: (near initialization for 'guest_errno') xtensa-semi.c:134: error: 'ELOOP' undeclared (first use in this function) xtensa-semi.c:134: error: array index in initializer not of integer type xtensa-semi.c:134: error: (near initialization for 'guest_errno') Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-05target-xtensa: convert host errno values to guestMax Filippov
Guest errno values are taken from the newlib. Convert only those errno values that can be returned from used system calls. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-01target-xtensa: return ENOSYS for unimplemented simcallsMax Filippov
This prevents guest from proceeding with uninitialised garbage returned from unimplemented simcalls. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-08-09Merge branch 'x86cpu_qom_tcg_v2' of git://github.com/imammedo/qemuBlue Swirl
* 'x86cpu_qom_tcg_v2' of git://github.com/imammedo/qemu: target-i386: move tcg initialization into x86_cpu_initfn() cleanup cpu_set_debug_excp_handler target-xtensa: drop usage of prev_debug_excp_handler target-i386: drop usage of prev_debug_excp_handler
2012-08-09target-xtensa: make default CPU depend on target endiannessMax Filippov
This makes usable default for -cpu option both for qemu-system-xtensa and qemu-system-xtensaeb fixing the following error: $ qemu-system-xtensaeb -M sim Unable to find CPU definition Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Tested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-07-28target-xtensa: fix big-endian BBS/BBC implementationMax Filippov
Quote from ISA, 2.1: For most Xtensa instructions, bit numbering is irrelevant; only the BBC and BBS instructions assign bit numbers to values on which the processor operates. The BBC/BBS instructions use big-endian bit ordering (0 is the most-significant bit) on a big-endian processor configuration. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-25target-xtensa: drop usage of prev_debug_excp_handlerIgor Mammedov
Chains of exception handlers are currently unused feature. Dropping it to be consistent with target-i386 but it may simplify qom-ifying CPU in future like for target-i386. Signed-off-by: Igor Mammedov <imammedo@redhat.com>
2012-06-10target-xtensa: switch to AREG0-free modeMax Filippov
Add env parameter to every helper function that needs it, update 'configure' script. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-10target-xtensa: add attributes to helper functionsMax Filippov
Mark exception generating functions 'noreturn' and pure constant functions as such. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-10target-xtensa: remove unnecessary include of dyngen-exec.hPeter Portante
Signed-off-by: Peter Portante <peter.portante@redhat.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-09target-xtensa: fix CCOUNT for conditional branchesMax Filippov
Taken conditional branches fail to update CCOUNT register because accumulated ccount_delta is reset during translation of non-taken branch. To fix it only update CCOUNT once per conditional branch instruction translation. This fixes guest linux freeze on LTP waitpid06 test. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-09target-xtensa: control page table lookup explicitlyMax Filippov
Hardware pagetable walking may not be nested. Stop guessing and pass explicit flag to the get_physical_addr_mmu function that controls page table lookup. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-09target-xtensa: update autorefill TLB entries conditionallyMax Filippov
This is to avoid interference of internal QEMU helpers (cpu_get_phys_page_debug, tb_invalidate_virtual_addr) with guest-visible TLB state. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-09target-xtensa: extract TLB entry setting methodMax Filippov
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-09target-xtensa: update EXCVADDR in case of page table lookupMax Filippov
According to ISA, 4.4.2.6, EXCVADDR may be changed by any TLB miss, even if the miss is handled entirely by processor hardware. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-06-09target-xtensa: flush TLB page for new MMU mappingMax Filippov
Both old and new mappings need flushing because their VPN may be different in MMU case. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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