ping On Thu, Aug 18, 2016 at 3:07 PM, Michael Rolnik <mrol...@gmail.com> wrote:
> This series of patches adds 8bit AVR cores to QEMU. > All instruction, except BREAK/DES/SPM/SPMX, are implemented. Not fully > tested yet. > However I was able to execute simple code with functions. e.g fibonacci > calculation. > This series of patches include a non real, sample board. > No fuses support yet. PC is set to 0 at reset. > > the patches include the following > 1. just a basic 8bit AVR CPU, without instruction decoding or translation > 2. CPU features which allow define the following 8bit AVR cores > avr1 > avr2 avr25 > avr3 avr31 avr35 > avr4 > avr5 avr51 > avr6 > xmega2 xmega4 xmega5 xmega6 xmega7 > 3. a definition of sample machine with SRAM, FLASH and CPU which allows to > execute simple code > 4. encoding for all AVR instructions > 5. interrupt handling > 6. helpers for IN, OUT, SLEEP, WBR & unsupported instructions > 7. a decoder which given an opcode decides what istruction it is > 8. translation of AVR instruction into TCG > 9. all features together > > changes since v3 > 1. rampD/X/Y/Z registers are encoded as 0x00ff0000 (instead of 0x000000ff) > for faster address manipulaton > 2. ffs changed to ctz32 > 3. duplicate code removed at avr_cpu_do_interrupt > 4. using andc instead of not + and > 5. fixing V flag calculation in varios instructions > 6. freeing local variables in PUSH > 7. tcg_const_local_i32 -> tcg_const_i32 > 8. using sextract32 instead of my implementation > 9. fixing BLD instruction > 10.xor(r) instead of 0xff - r at COM > 11.fixing MULS/MULSU not to modify inputs' content > 12.using SUB for NEG > 13.fixing tcg_gen_qemu_ld/st call in XCH > > changes since v4 > 1. target is now defined as big endian in order to optimize > push_ret/pop_ret > 2. all style warnings are fixed > 3. adding cpu_set/get_sreg functions > 4. simplifying gen_goto_tb as there is no real paging > 5. env->pc -> env->pc_w > 6. making flag dump more compact > 7. more spacing > 8. renaming CODE/DATA_INDEX -> MMU_CODE/DATA_IDX > 9. removing avr_set_feature > 10. SPL/SPH set bug fix > 11. switching stb_phys to cpu_stb_data > 12. cleaning up avr_decode > 13. saving sreg, rampD/X/Y/Z, eind in HW format (savevm) > 14. saving CPU features (savevm) > > changes since v5 > 1. BLD bug fix > 2. decoder generator is added > > chages since v6 > 1. using cpu_get_sreg/cpu_set_sreg in avr_cpu_gdb_read_register/avr_ > cpu_gdb_write_register > 2. configure the target as little endian because otherwise GDB does not > work > 3. fixing and testing gen_push_ret/gen_pop_ret > > changes since v7 > 1. folding back v6 > 2. logging at helper_outb and helper_inb are done for non supported yet > registers only > 3. MAINTAINERS updated > > changes since v8 > 1. removing hw/avr from hw/Makefile.obj as it should not be built for all > 2. making linux compilable > 3. testing on > a. Mac, Apple LLVM version 7.0.0 > b. Ubuntu 12.04, gcc 4.9.2 > c. Fedora 23, gcc 5.3.1 > 4. folding back some patches > 5. translation bug fixes for ORI, CPI, XOR instructions > 6. propper handling of cpu register writes though memory > > changes since v9 > 1. removing forward declarations of static functions > 2. disabling debug prints > 3. switching to case range instead of if else if ... > 4. LD/ST IN/OUT accessing CPU maintainder registers are not routed to any > device > 5. commenst about sample board and sample IO device added > 6. sample board description is more descriptive now > 7. memory_region_allocate_system_memory is used to create RAM > 8. now there are helper_fullrd & helper_fullwr when LD/ST try to access > registers > > changes since v10 > 1. movig back fullwr & fullrd into the commit where outb and inb were > introduced > 2. changing tlb_fill function signature > 3. adding empty line between functions > 4. adding newline on the last line of the file > 5. using tb->flags to generae full access ST/LD instructions > 6. fixing SBRC bug > 7. folding back 10th commit > 8. whenever a new file is introduced it's added to Makefile.objs > > changes since v11 > 1. updating to v2.7.0-rc > 2. removing assignment to env->fullacc from gen_intermediate_code > > changes since v12 > 1. fixing spacing > 2. fixing get/put_segment functions > 3. removing target-avr/machine.h file > 4. VMSTATE_SINGLE_TEST -> VMSTATE_SINGLE > 5. comment spelling > 6. removing hw/avr/sample_io.c > 7. char const* -> const char* > 8. proper ram allocation > 9. fixing breakpoint functionality. > 10.env1 -> env > 11.fixing avr_cpu_gdb_write_register & avr_cpu_gdb_read_register functions > 12.any cpu is removed > 12.feature bits are not saved into vm state > > changes since v13 > 1. rebasing to v2.7.0-rc1 > > changes since v14 > 1. I made self review with git gui tool. (I did not know such a thing > exists) > 2. removing all double/tripple spaces > 3. removing comment reference to SampleIO > 4. folding back some changes, so there is not deleted lines in my code > 5. moving avr configuration, within configure file, before chris > > changes since v15 > 1. removing IO registers cache from CPU > 2. implementing CBI/SBI as read(helper_inb), modify, write(helper_outb) > 3. implementing CBIC/SBIC as read(helper_inb), check, branch > 4. adding missing tcg_temp_free_i32 for tcg_const_i32 > > changes since v16 > 1. removing EXT IO registers knoledge from CPU. These registers are > accessible > by LD/ST only. CPU has no interest in them > > > Michael Rolnik (9): > target-avr: AVR cores support is added. > target-avr: adding AVR CPU features/flavors > target-avr: adding a sample AVR board > target-avr: adding instructions encodings > target-avr: adding AVR interrupt handling > target-avr: adding helpers for IN, OUT, SLEEP, WBR & unsupported > instructions > target-avr: adding instruction translation > target-avr: instruction decoder generator > target-avr: adding instruction decoder > > MAINTAINERS | 6 + > arch_init.c | 2 + > configure | 5 + > default-configs/avr-softmmu.mak | 21 + > hw/avr/Makefile.objs | 21 + > hw/avr/sample.c | 112 ++ > include/disas/bfd.h | 6 + > include/sysemu/arch_init.h | 1 + > target-avr/Makefile.objs | 26 + > target-avr/cpu-qom.h | 85 + > target-avr/cpu.c | 603 +++++++ > target-avr/cpu.h | 238 +++ > target-avr/cpugen/CMakeLists.txt | 38 + > target-avr/cpugen/README.md | 17 + > target-avr/cpugen/cpu/avr.yaml | 214 +++ > target-avr/cpugen/src/CMakeLists.txt | 63 + > target-avr/cpugen/src/cpugen.cpp | 458 +++++ > target-avr/cpugen/src/utils.cpp | 27 + > target-avr/cpugen/src/utils.h | 79 + > target-avr/cpugen/xsl/decode.c.xsl | 103 ++ > target-avr/cpugen/xsl/translate-inst.h.xsl | 118 ++ > target-avr/cpugen/xsl/utils.xsl | 108 ++ > target-avr/decode.c | 693 ++++++++ > target-avr/gdbstub.c | 86 + > target-avr/helper.c | 392 +++++ > target-avr/helper.h | 29 + > target-avr/machine.c | 115 ++ > target-avr/translate-inst.c | 2641 > ++++++++++++++++++++++++++++ > target-avr/translate-inst.h | 805 +++++++++ > target-avr/translate.c | 266 +++ > target-avr/translate.h | 116 ++ > 31 files changed, 7494 insertions(+) > create mode 100644 default-configs/avr-softmmu.mak > create mode 100644 hw/avr/Makefile.objs > create mode 100644 hw/avr/sample.c > create mode 100644 target-avr/Makefile.objs > create mode 100644 target-avr/cpu-qom.h > create mode 100644 target-avr/cpu.c > create mode 100644 target-avr/cpu.h > create mode 100644 target-avr/cpugen/CMakeLists.txt > create mode 100644 target-avr/cpugen/README.md > create mode 100644 target-avr/cpugen/cpu/avr.yaml > create mode 100644 target-avr/cpugen/src/CMakeLists.txt > create mode 100644 target-avr/cpugen/src/cpugen.cpp > create mode 100644 target-avr/cpugen/src/utils.cpp > create mode 100644 target-avr/cpugen/src/utils.h > create mode 100644 target-avr/cpugen/xsl/decode.c.xsl > create mode 100644 target-avr/cpugen/xsl/translate-inst.h.xsl > create mode 100644 target-avr/cpugen/xsl/utils.xsl > create mode 100644 target-avr/decode.c > create mode 100644 target-avr/gdbstub.c > create mode 100644 target-avr/helper.c > create mode 100644 target-avr/helper.h > create mode 100644 target-avr/machine.c > create mode 100644 target-avr/translate-inst.c > create mode 100644 target-avr/translate-inst.h > create mode 100644 target-avr/translate.c > create mode 100644 target-avr/translate.h > > -- > 2.4.9 (Apple Git-60) > > -- Best Regards, Michael Rolnik
