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[v7,00/64] nios2 fixes, cleanups, shadow reg sets

Message ID 20220421151735.31996-1-richard.henderson@linaro.org
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Series nios2 fixes, cleanups, shadow reg sets | expand

Message

Richard Henderson April 21, 2022, 3:16 p.m. UTC 
New in v7 is changing exceptions to advance the pc before raising
the exception, to match the hardware.  This caused a number of
conflicts with my outstanding linux-user patches, so I've merged
the two patch sets.

Supercedes: <20220317050538.924111-1-richard.henderson@linaro.org>
("target/nios2: Shadow register set, EIC and VIC")

Supercedes: <20220325195250.386071-1-richard.henderson@linaro.org>
("linux-user/nios2: Fix clone and sigreturn")

Patches needing review:
  09-target-nios2-Remove-user-only-nios2_cpu_do_interr.patch
  10-target-nios2-Remove-nios2_cpu_record_sigsegv.patch
  11-target-nios2-Build-helper.c-for-system-only.patch
  12-linux-user-nios2-Use-force_sig_fault-for-EXCP_DEB.patch
  34-target-nios2-Handle-EXCP_UNALIGN-and-EXCP_UALIGND.patch
  37-target-nios2-Prevent-writes-to-read-only-or-reser.patch
  43-target-nios2-Split-out-named-structs-for-IRJ-_TYP.patch
  44-target-nios2-Split-out-helpers-for-gen_-translate.patch
  53-target-nios2-Introduce-shadow-register-sets.patch
  56-target-nios2-Implement-EIC-interrupt-processing.patch
  57-target-nios2-Advance-pc-when-raising-exceptions.patch
  63-tests-tcg-nios2-Add-semihosting-multiarch-tests.patch
  64-tests-tcg-nios2-Add-test-shadow-1.patch


r~


Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: Alex Bennée <alex.bennee@linaro.org>
Cc: Amir Gonnen <amir.gonnen@neuroblade.ai>


Amir Gonnen (5):
  target/nios2: Check supervisor on eret
  target/nios2: Add NUM_GP_REGS and NUM_CP_REGS
  target/nios2: Split out helper for eret instruction
  hw/intc: Vectored Interrupt Controller (VIC)
  hw/nios2: Machine with a Vectored Interrupt Controller

Richard Henderson (59):
  linux-user/nios2: Hoist pc advance to the top of EXCP_TRAP
  linux-user/nios2: Fix clone child return
  linux-user/nios2: Drop syscall 0 "workaround"
  linux-user/nios2: Adjust error return
  linux-user/nios2: Handle special qemu syscall return values
  linux-user/nios2: Remove do_sigreturn
  linux-user/nios2: Use QEMU_ESIGRETURN from do_rt_sigreturn
  tests/tcg/nios2: Re-enable linux-user tests
  target/nios2: Remove user-only nios2_cpu_do_interrupt
  target/nios2: Remove nios2_cpu_record_sigsegv
  target/nios2: Build helper.c for system only
  linux-user/nios2: Use force_sig_fault for EXCP_DEBUG
  target/nios2: Stop generating code if gen_check_supervisor fails
  target/nios2: Split PC out of env->regs[]
  target/nios2: Fix BRET instruction
  target/nios2: Do not create TCGv for control registers
  linux-user/nios2: Only initialize SP and PC in target_cpu_copy_regs
  target/nios2: Remove cpu_interrupts_enabled
  target/nios2: Split control registers away from general registers
  target/nios2: Clean up nios2_cpu_dump_state
  target/nios2: Use hw/registerfields.h for CR_STATUS fields
  target/nios2: Use hw/registerfields.h for CR_EXCEPTION fields
  target/nios2: Use hw/registerfields.h for CR_TLBADDR fields
  target/nios2: Use hw/registerfields.h for CR_TLBACC fields
  target/nios2: Rename CR_TLBMISC_WR to CR_TLBMISC_WE
  target/nios2: Use hw/registerfields.h for CR_TLBMISC fields
  target/nios2: Move R_FOO and CR_BAR into enumerations
  target/nios2: Create EXCP_SEMIHOST for semi-hosting
  target/nios2: Clean up nios2_cpu_do_interrupt
  target/nios2: Hoist CPU_LOG_INT logging
  target/nios2: Handle EXCP_UNALIGN and EXCP_UALIGND
  target/nios2: Cleanup set of CR_EXCEPTION for do_interrupt
  target/nios2: Clean up handling of tlbmisc in do_exception
  target/nios2: Prevent writes to read-only or reserved control fields
  target/nios2: Implement cpuid
  target/nios2: Implement CR_STATUS.RSIE
  target/nios2: Remove CPU_INTERRUPT_NMI
  target/nios2: Support division error exception
  target/nios2: Use tcg_constant_tl
  target/nios2: Split out named structs for [IRJ]_TYPE
  target/nios2: Split out helpers for gen_* translate macros
  target/nios2: Introduce dest_gpr
  target/nios2: Drop CR_STATUS_EH from tb->flags
  target/nios2: Enable unaligned traps for system mode
  target/nios2: Create gen_jumpr
  target/nios2: Hoist set of is_jmp into gen_goto_tb
  target/nios2: Use gen_goto_tb for DISAS_TOO_MANY
  target/nios2: Use tcg_gen_lookup_and_goto_ptr
  target/nios2: Implement Misaligned destination exception
  target/nios2: Introduce shadow register sets
  target/nios2: Implement rdprs, wrprs
  target/nios2: Update helper_eret for shadow registers
  target/nios2: Implement EIC interrupt processing
  target/nios2: Advance pc when raising exceptions
  linux-user/nios2: Handle various SIGILL exceptions
  hw/nios2: Introduce Nios2MachineState
  hw/nios2: Move memory regions into Nios2Machine
  tests/tcg/nios2: Add semihosting multiarch tests
  tests/tcg/nios2: Add test-shadow-1

 configs/targets/nios2-softmmu.mak       |   1 +
 include/hw/intc/nios2_vic.h             |  64 ++
 linux-user/nios2/target_cpu.h           |   1 +
 target/nios2/cpu.h                      | 250 +++++---
 target/nios2/helper.h                   |   5 +
 tests/tcg/nios2/semicall.h              |  25 +
 hw/intc/nios2_vic.c                     | 313 ++++++++++
 hw/nios2/10m50_devboard.c               | 115 +++-
 linux-user/elfload.c                    |   3 +-
 linux-user/nios2/cpu_loop.c             |  96 ++-
 linux-user/nios2/signal.c               |  25 +-
 target/nios2/cpu.c                      | 213 +++++--
 target/nios2/helper.c                   | 383 ++++++------
 target/nios2/mmu.c                      |  78 +--
 target/nios2/op_helper.c                |  88 +++
 target/nios2/translate.c                | 748 +++++++++++++++---------
 hw/intc/Kconfig                         |   3 +
 hw/intc/meson.build                     |   1 +
 hw/nios2/Kconfig                        |   1 +
 target/nios2/meson.build                |   7 +-
 tests/tcg/nios2/10m50-ghrd.ld           |  59 ++
 tests/tcg/nios2/Makefile.softmmu-target |  30 +
 tests/tcg/nios2/Makefile.target         |  11 -
 tests/tcg/nios2/boot.S                  | 218 +++++++
 tests/tcg/nios2/intr.S                  |  31 +
 tests/tcg/nios2/test-shadow-1.S         |  37 ++
 26 files changed, 2096 insertions(+), 710 deletions(-)
 create mode 100644 include/hw/intc/nios2_vic.h
 create mode 100644 tests/tcg/nios2/semicall.h
 create mode 100644 hw/intc/nios2_vic.c
 create mode 100644 tests/tcg/nios2/10m50-ghrd.ld
 create mode 100644 tests/tcg/nios2/Makefile.softmmu-target
 delete mode 100644 tests/tcg/nios2/Makefile.target
 create mode 100644 tests/tcg/nios2/boot.S
 create mode 100644 tests/tcg/nios2/intr.S
 create mode 100644 tests/tcg/nios2/test-shadow-1.S