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[PATCH 0/7] target/riscv: Add support for PC-relative translation
From: |
Weiwei Li |
Subject: |
[PATCH 0/7] target/riscv: Add support for PC-relative translation |
Date: |
Sun, 9 Apr 2023 18:52:59 +0800 |
This patchset tries to add support for PC-relative translation.
The existence of CF_PCREL can improve performance with the guest
kernel's address space randomization. Each guest process maps libc.so
(et al) at a different virtual address, and this allows those
translations to be shared.
And support of PC-relative translation is the precondition to support
pointer mask for instruction.
The port is available here:
https://github.com/plctlab/plct-qemu/tree/plct-pcrel-upstream
Weiwei Li (7):
target/riscv: Fix target address to update badaddr
target/riscv: Introduce cur_insn_len into DisasContext
target/riscv: Change gen_goto_tb to work on displacements
target/riscv: Change gen_set_pc_imm to gen_update_pc
target/riscv: Use true diff for gen_pc_plus_diff
target/riscv: Enable PC-relative translation
target/riscv: Remove pc_succ_insn from DisasContext
target/riscv/cpu.c | 31 +++++--
.../riscv/insn_trans/trans_privileged.c.inc | 2 +-
target/riscv/insn_trans/trans_rvi.c.inc | 43 ++++++---
target/riscv/insn_trans/trans_rvv.c.inc | 4 +-
target/riscv/insn_trans/trans_rvzawrs.c.inc | 2 +-
target/riscv/insn_trans/trans_xthead.c.inc | 2 +-
target/riscv/translate.c | 92 +++++++++++++------
7 files changed, 117 insertions(+), 59 deletions(-)
--
2.25.1
- [PATCH 0/7] target/riscv: Add support for PC-relative translation,
Weiwei Li <=
- [PATCH 7/7] target/riscv: Remove pc_succ_insn from DisasContext, Weiwei Li, 2023/04/09
- [PATCH 5/7] target/riscv: Use true diff for gen_pc_plus_diff, Weiwei Li, 2023/04/09
- [PATCH 1/7] target/riscv: Fix target address to update badaddr, Weiwei Li, 2023/04/09
- [PATCH 3/7] target/riscv: Change gen_goto_tb to work on displacements, Weiwei Li, 2023/04/09
- [PATCH 2/7] target/riscv: Introduce cur_insn_len into DisasContext, Weiwei Li, 2023/04/09
- [PATCH 4/7] target/riscv: Change gen_set_pc_imm to gen_update_pc, Weiwei Li, 2023/04/09
- [PATCH 6/7] target/riscv: Enable PC-relative translation, Weiwei Li, 2023/04/09