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2022-10-31disas/mips: Fix branch displacement for BEQZC and BNEZCDavid Daney1-2/+10
disas/mips.c got added in commit 6643d27ea0 ("MIPS disas support") apparently based on binutils tag 'gdb_6_1-branchpoint' [1]. Back then, MIPSr6 was not supported (added in binutils commit 7361da2c952 during 2014 [2]). Binutils codebase diverged so much over the last 18 years, it is not possible to simply cherry-pick their changes, so fix it BEQZC / BNEZC 21-bit signed branch displacement locally. [1] https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=opcodes/mips-dis.c;hb=refs/tags/gdb_6_1-branchpoint [2] https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=7361da2c952 Fixes: 31837be3ee ("target-mips: add compact and CP1 branches") Signed-off-by: David Daney <david.daney@fungible.com> Reviewed-by: Marcin Nowakowski <marcin.nowakowski@fungible.com> [PMD: Added commit description] Signed-off-by: Philippe Mathieu-Daudé <philmd@fungible.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20221014112322.61119-1-philmd@fungible.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2020-01-29target/mips: Add implementation of GINVT instructionYongbok Kim1-0/+10
Implement emulation of GINVT instruction. As QEMU doesn't support caches and virtualization, this implementation covers only one instruction (GINVT - Global Invalidate TLB) among all TLB-related MIPS instructions. Reviewed-by: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com> Signed-off-by: Yongbok Kim <yongbok.kim@mips.com> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Message-Id: <1579883929-1517-5-git-send-email-aleksandar.markovic@rt-rk.com>
2019-04-18disas: Rename include/disas/bfd.h back to include/disas/dis-asm.hMarkus Armbruster1-1/+1
Commit dc99065b5f9 (v0.1.0) added dis-asm.h from binutils. Commit 43d4145a986 (v0.1.5) inlined bfd.h into dis-asm.h to remove the dependency on binutils. Commit 76cad71136b (v1.4.0) moved dis-asm.h to include/disas/bfd.h. The new name is confusing when you try to match against (pre GPLv3+) binutils. Rename it back. Keep it in the same directory, of course. Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190417191805.28198-17-armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2016-07-18disas: Remove unused macro '_'Lluís Vilanova1-25/+25
Eliminates a future compilation error when UI code includes the tracing headers (indirectly pulling "disas/bfd.h" through "qom/cpu.h") and GLib's i18n '_' macro. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-02-26target-mips: implement R6 multi-threadingYongbok Kim1-0/+4
MIPS Release 6 provides multi-threading features which replace pre-R6 MT Module. CP0.Config3.MT is always 0 in R6, instead there is new CP0.Config5.VP (Virtual Processor) bit which indicates presence of multi-threading support which includes CP0.GlobalNumber register and DVP/EVP instructions. Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-01-23mips: Clean up includesPeter Maydell1-0/+1
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Leon Alrae <leon.alrae@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-10-19disas/mips: Add R6 jr/jr.hb to disassemblerJames Hogan1-0/+2
MIPS r6 encodes jr as jalr zero, and jr.hb as jalr.hb zero, so add these encodings to the MIPS disassembly table. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Leon Alrae <leon.alrae@imgtec.com> Signed-off-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Richard Henderson <rth@twiddle.net> Message-Id: <1443788657-14537-3-git-send-email-james.hogan@imgtec.com>
2015-07-15disas/mips: fix disassembling R6 instructionsYongbok Kim1-6/+6
In the Release 6 of the MIPS Architecture, LL, SC, LLD, SCD, PREF and CACHE instructions have 9 bits offsets. Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Leon Alrae <leon.alrae@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2015-06-12target-mips: add MTHC0 and MFHC0 instructionsLeon Alrae1-0/+2
Implement MTHC0 and MFHC0 instructions. In MIPS32 they are used to access upper word of extended to 64-bits CP0 registers. In MIPS64, when CP0 destination register specified is the EntryLo0 or EntryLo1, bits 1:0 of the GPR appear at bits 31:30 of EntryLo0 or EntryLo1. This is to compensate for RI and XI, which were shifted to bits 63:62 by MTC0 to EntryLo0 or EntryLo1. Therefore creating separate functions for EntryLo0 and EntryLo1. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-11target-mips: add ERETNC instruction and Config5.LLB bitLeon Alrae1-0/+1
ERETNC is identical to ERET except that an ERETNC will not clear the LLbit that is set by execution of an LL instruction, and thus when placed between an LL and SC sequence, will never cause the SC to fail. Presence of ERETNC is denoted by the Config5.LLB. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2014-12-16disas/mips: disable unused mips16_to_32_reg_map[]Leon Alrae1-1/+2
This array is used by print_mips16_insn_arg() which is guarded by #if 0. Therefore doing the same with the array as it generates clang warnings. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-12-16disas/mips: remove unused mips_msa_control_names_numeric[32]Leon Alrae1-7/+0
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
2014-11-03disas/mips.c: disassemble MSA instructionsYongbok Kim1-2/+714
disassemble MIPS SIMD Architecture instructions Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-11-03target-mips: add TLBINV supportLeon Alrae1-0/+2
For Standard TLB configuration (Config.MT=1): TLBINV invalidates a set of TLB entries based on ASID. The virtual address is ignored in the entry match. TLB entries which have their G bit set to 1 are not modified. TLBINVF causes all entries to be invalidated. Single TLB entry can be marked as invalid on TLB entry write by having EntryHi.EHINV set to 1. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
2014-10-14target-mips: remove JR, BLTZAL, BGEZAL and add NAL, BAL instructionsYongbok Kim1-0/+2
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2014-10-14target-mips: add new Floating Point Comparison instructionsYongbok Kim1-0/+44
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2014-10-14target-mips: add new Floating Point instructionsLeon Alrae1-0/+22
In terms of encoding MIPS32R6 MIN.fmt, MAX.fmt, MINA.fmt, MAXA.fmt replaced MIPS-3D RECIP1, RECIP2, RSQRT1, RSQRT2 instructions. In R6 all Floating Point instructions are supposed to be IEEE-2008 compliant i.e. FIR.HAS2008 always 1. However, QEMU softfloat for MIPS has not been updated yet. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
2014-10-14target-mips: add AUI, LSA and PCREL instruction familiesLeon Alrae1-3/+39
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
2014-10-13target-mips: add compact and CP1 branchesYongbok Kim1-3/+64
Introduce MIPS32R6 Compact Branch instructions which do not have delay slot - they have forbidden slot instead. However, current implementation does not support forbidden slot yet. Add also BC1EQZ and BC1NEZ instructions. Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2014-10-13target-mips: add ALIGN, DALIGN, BITSWAP and DBITSWAP instructionsYongbok Kim1-0/+4
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com> Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2014-10-13target-mips: move CLO, DCLO, CLZ, DCLZ, SDBBP and free special2 in R6Leon Alrae1-0/+5
Also consider OPC_SPIM instruction as deleted in R6 because it is overlaping with MIPS32R6 SDBBP. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2014-10-13target-mips: redefine Integer Multiply and Divide instructionsLeon Alrae1-0/+16
Use "R6_" prefix in front of all new Multiply / Divide instructions for easier differentiation between R6 and preR6. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2014-10-13target-mips: move PREF, CACHE, LLD and SCD instructionsLeon Alrae1-0/+4
The encoding of PREF, CACHE, LLD and SCD instruction changed in MIPS32R6. Additionally, the hint codes in PREF instruction greater than or equal to 24 generate Reserved Instruction Exception. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
2014-10-13target-mips: move LL and SC instructionsLeon Alrae1-1/+8
The encoding of LL and SC instruction has changed in MIPS32 Release 6. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: James Hogan <james.hogan@imgtec.com>
2014-10-13target-mips: add SELEQZ and SELNEZ instructionsLeon Alrae1-0/+8
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: James Hogan <james.hogan@imgtec.com>
2012-12-19build: kill libdis, move disassemblers to disas/Paolo Bonzini1-0/+4873
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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