This patch introduces a set of specialized 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 specialized instructions. At runtime, user programs load the shared library, and specialized 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.
Yeqi Fu (10): docs: Add specification for native library calls build: Add configure options for native calls build: Implement libnative library and configure options linux-user: Implement envlist_appendenv linux-user: Implement native-bypass option support accel/tcg: Add support for native library calls target/i386: Add support for native library calls target/mips: Add support for native library calls target/arm: Add support for native library calls tests/tcg/multiarch: Add nativecalls.c test Makefile | 2 + accel/tcg/tcg-runtime.c | 37 ++++++++ accel/tcg/tcg-runtime.h | 4 + common-user/native/Makefile.include | 9 ++ common-user/native/Makefile.target | 26 ++++++ common-user/native/libnative.c | 112 +++++++++++++++++++++++ configs/targets/aarch64-linux-user.mak | 1 + configs/targets/arm-linux-user.mak | 1 + configs/targets/i386-linux-user.mak | 1 + configs/targets/mips-linux-user.mak | 1 + configs/targets/mips64-linux-user.mak | 1 + configs/targets/x86_64-linux-user.mak | 1 + configure | 84 +++++++++++++---- docs/native_calls.txt | 70 ++++++++++++++ include/native/libnative.h | 12 +++ include/native/native-calls.h | 75 +++++++++++++++ include/native/native-defs.h | 65 +++++++++++++ include/qemu/envlist.h | 1 + linux-user/main.c | 36 ++++++++ target/arm/tcg/translate-a64.c | 27 +++++- target/arm/tcg/translate.c | 25 ++++- target/arm/tcg/translate.h | 6 ++ target/i386/tcg/translate.c | 33 +++++++ target/mips/tcg/translate.c | 26 ++++++ target/mips/tcg/translate.h | 2 + tests/tcg/multiarch/Makefile.target | 9 +- tests/tcg/multiarch/native/nativecalls.c | 103 +++++++++++++++++++++ util/envlist.c | 61 ++++++++++++ 28 files changed, 810 insertions(+), 21 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 docs/native_calls.txt create mode 100644 include/native/libnative.h create mode 100644 include/native/native-calls.h create mode 100644 include/native/native-defs.h create mode 100644 tests/tcg/multiarch/native/nativecalls.c -- 2.34.1
