This patch introduces a set of feature instructions for native calls and provides helpers to translate these instructions to corresponding native functions. A shared library is also implemented, where native functions are rewritten as feature instructions. At runtime, user programs load the shared library, and feature instructions are executed when native functions are called. This patch is applicable to user programs with architectures x86, x86_64, arm, aarch64, mips, and mips64. To build, compile libnative.c into a shared library for the user program's architecture and run the '../configure --enable-user-native-call && make' command.
Yeqi Fu (6): build: Add configure options for native calls Add the libnative library target/i386: Add native library calls target/mips: Add native library calls target/arm: Add native library calls linux-user: Add '-native-bypass' option Makefile | 4 ++ common-user/native/Makefile.include | 9 ++++ common-user/native/Makefile.target | 22 ++++++++++ common-user/native/libnative.c | 65 ++++++++++++++++++++++++++++ configure | 50 +++++++++++++++++++++ docs/devel/build-system.rst | 4 ++ include/native/libnative.h | 11 +++++ include/native/native-func.h | 11 +++++ include/qemu/envlist.h | 1 + linux-user/main.c | 23 ++++++++++ meson.build | 8 ++++ meson_options.txt | 2 + scripts/meson-buildoptions.sh | 4 ++ target/arm/helper.c | 47 ++++++++++++++++++++ target/arm/helper.h | 6 +++ target/arm/tcg/translate-a64.c | 22 ++++++++++ target/arm/tcg/translate.c | 25 ++++++++++- target/arm/tcg/translate.h | 19 ++++++++ target/i386/helper.h | 6 +++ target/i386/tcg/translate.c | 20 +++++++++ target/i386/tcg/user/meson.build | 1 + target/i386/tcg/user/native_helper.c | 65 ++++++++++++++++++++++++++++ target/mips/helper.h | 6 +++ target/mips/tcg/meson.build | 1 + target/mips/tcg/native_helper.c | 55 +++++++++++++++++++++++ target/mips/tcg/translate.c | 20 ++++++++- target/mips/tcg/translate.h | 12 +++++ util/envlist.c | 56 ++++++++++++++++++++++++ 28 files changed, 573 insertions(+), 2 deletions(-) create mode 100644 common-user/native/Makefile.include create mode 100644 common-user/native/Makefile.target create mode 100644 common-user/native/libnative.c create mode 100644 include/native/libnative.h create mode 100644 include/native/native-func.h create mode 100644 target/i386/tcg/user/native_helper.c create mode 100644 target/mips/tcg/native_helper.c -- 2.34.1
