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Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of s
From: |
Maciej W. Rozycki |
Subject: |
Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes |
Date: |
Fri, 9 Nov 2018 13:53:27 +0000 (GMT) |
User-agent: |
Alpine 2.21 (LFD 202 2017-01-01) |
On Fri, 9 Nov 2018, Aleksandar Markovic wrote:
> > ... and DMULT, DMULTU, DDIV and DDIVU
> > are part of the MIPS III ISA. They are emulated in user mode to support
> > generic MIPS III programs.
>
> Pure MIPS III executables should not be a concern of the R5900
> emulation, but R5900 executables.
I repeat: MIPS III is the available instruction set defined with the base
64-bit MIPS Linux psABI and must not be subsetted. You have to support it
in QEMU Linux user emulation mode for any 64-bit MIPS processor and this
is not debatable, period. QEMU has no control over the Linux ABI, it has
to accept it as it is.
Maciej
- Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes, (continued)
- Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes, Aleksandar Markovic, 2018/11/08
- Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes, Aleksandar Markovic, 2018/11/09
- Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes, Fredrik Noring, 2018/11/09
- Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes, Aleksandar Markovic, 2018/11/09
- Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes, Fredrik Noring, 2018/11/09
- Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes, Aleksandar Markovic, 2018/11/09
- Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes, Aleksandar Markovic, 2018/11/09
- Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes, Maciej W. Rozycki, 2018/11/09
- Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes,
Maciej W. Rozycki <=
Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes, Aleksandar Markovic, 2018/11/17
[Qemu-devel] [PATCH v2 5/6] target/mips: Guard check_insn_opc_user_only with INSN_R5900 check, Fredrik Noring, 2018/11/07
[Qemu-devel] [PATCH v2 6/6] target/mips: Guard check_insn with INSN_R5900 check, Fredrik Noring, 2018/11/07