From 22f15579fa1ca654d331cac8e68a4e70981a8801 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Thu, 18 Mar 2021 12:46:44 -0600 Subject: [PATCH] tcg: Build ffi data structures for helpers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add libffi as a build requirement for TCI. Add libffi to the dockerfiles to satisfy that requirement. Construct an ffi_cif structure for each unique typemask. Record the result in a separate hash table for later lookup; this allows helper_table to stay const. Tested-by: Philippe Mathieu-Daudé Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- tcg/meson.build | 8 ++- tcg/tcg.c | 58 +++++++++++++++++++ tests/docker/dockerfiles/alpine.docker | 1 + tests/docker/dockerfiles/centos8.docker | 1 + tests/docker/dockerfiles/debian10.docker | 1 + .../dockerfiles/fedora-i386-cross.docker | 1 + .../dockerfiles/fedora-win32-cross.docker | 1 + .../dockerfiles/fedora-win64-cross.docker | 1 + tests/docker/dockerfiles/fedora.docker | 1 + tests/docker/dockerfiles/ubuntu.docker | 1 + tests/docker/dockerfiles/ubuntu1804.docker | 1 + tests/docker/dockerfiles/ubuntu2004.docker | 1 + 12 files changed, 75 insertions(+), 1 deletion(-) diff --git a/tcg/meson.build b/tcg/meson.build index 5be3915529..c4c63b19d4 100644 --- a/tcg/meson.build +++ b/tcg/meson.build @@ -9,6 +9,12 @@ tcg_ss.add(files( 'tcg-op-gvec.c', 'tcg-op-vec.c', )) -tcg_ss.add(when: 'CONFIG_TCG_INTERPRETER', if_true: files('tci.c')) + +if get_option('tcg_interpreter') + libffi = dependency('libffi', version: '>=3.0', required: true, + method: 'pkg-config', kwargs: static_kwargs) + specific_ss.add(libffi) + specific_ss.add(files('tci.c')) +endif specific_ss.add_all(when: 'CONFIG_TCG', if_true: tcg_ss) diff --git a/tcg/tcg.c b/tcg/tcg.c index 8f4f1711cd..de1a593ce7 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -60,6 +60,10 @@ #include "exec/log.h" #include "tcg-internal.h" +#ifdef CONFIG_TCG_INTERPRETER +#include +#endif + /* Forward declarations for functions declared in tcg-target.c.inc and used here. */ static void tcg_target_init(TCGContext *s); @@ -539,6 +543,19 @@ static const TCGHelperInfo all_helpers[] = { }; static GHashTable *helper_table; +#ifdef CONFIG_TCG_INTERPRETER +static GHashTable *ffi_table; + +static ffi_type * const typecode_to_ffi[8] = { + [dh_typecode_void] = &ffi_type_void, + [dh_typecode_i32] = &ffi_type_uint32, + [dh_typecode_s32] = &ffi_type_sint32, + [dh_typecode_i64] = &ffi_type_uint64, + [dh_typecode_s64] = &ffi_type_sint64, + [dh_typecode_ptr] = &ffi_type_pointer, +}; +#endif + static int indirect_reg_alloc_order[ARRAY_SIZE(tcg_target_reg_alloc_order)]; static void process_op_defs(TCGContext *s); static TCGTemp *tcg_global_reg_new_internal(TCGContext *s, TCGType type, @@ -582,6 +599,47 @@ static void tcg_context_init(unsigned max_cpus) (gpointer)&all_helpers[i]); } +#ifdef CONFIG_TCG_INTERPRETER + /* g_direct_hash/equal for direct comparisons on uint32_t. */ + ffi_table = g_hash_table_new(NULL, NULL); + for (i = 0; i < ARRAY_SIZE(all_helpers); ++i) { + struct { + ffi_cif cif; + ffi_type *args[]; + } *ca; + uint32_t typemask = all_helpers[i].typemask; + gpointer hash = (gpointer)(uintptr_t)typemask; + ffi_status status; + int nargs; + + if (g_hash_table_lookup(ffi_table, hash)) { + continue; + } + + /* Ignoring the return type, find the last non-zero field. */ + nargs = 32 - clz32(typemask >> 3); + nargs = DIV_ROUND_UP(nargs, 3); + + ca = g_malloc0(sizeof(*ca) + nargs * sizeof(ffi_type *)); + ca->cif.rtype = typecode_to_ffi[typemask & 7]; + ca->cif.nargs = nargs; + + if (nargs != 0) { + ca->cif.arg_types = ca->args; + for (i = 0; i < nargs; ++i) { + int typecode = extract32(typemask, (i + 1) * 3, 3); + ca->args[i] = typecode_to_ffi[typecode]; + } + } + + status = ffi_prep_cif(&ca->cif, FFI_DEFAULT_ABI, nargs, + ca->cif.rtype, ca->cif.arg_types); + assert(status == FFI_OK); + + g_hash_table_insert(ffi_table, hash, (gpointer)&ca->cif); + } +#endif + tcg_target_init(s); process_op_defs(s); diff --git a/tests/docker/dockerfiles/alpine.docker b/tests/docker/dockerfiles/alpine.docker index 7eeecacc46..7e6997e301 100644 --- a/tests/docker/dockerfiles/alpine.docker +++ b/tests/docker/dockerfiles/alpine.docker @@ -22,6 +22,7 @@ ENV PACKAGES \ libaio-dev \ libbpf-dev \ libcap-ng-dev \ + libffi-dev \ libjpeg-turbo-dev \ libnfs-dev \ libpng-dev \ diff --git a/tests/docker/dockerfiles/centos8.docker b/tests/docker/dockerfiles/centos8.docker index efc1349cc8..03e0440e03 100644 --- a/tests/docker/dockerfiles/centos8.docker +++ b/tests/docker/dockerfiles/centos8.docker @@ -17,6 +17,7 @@ ENV PACKAGES \ libbpf-devel \ libepoxy-devel \ libfdt-devel \ + libffi-devel \ libgcrypt-devel \ lzo-devel \ make \ diff --git a/tests/docker/dockerfiles/debian10.docker b/tests/docker/dockerfiles/debian10.docker index 63cf835ec5..4ffe47671e 100644 --- a/tests/docker/dockerfiles/debian10.docker +++ b/tests/docker/dockerfiles/debian10.docker @@ -26,6 +26,7 @@ RUN apt update && \ gdb-multiarch \ gettext \ git \ + libffi-dev \ libncurses5-dev \ ninja-build \ pkg-config \ diff --git a/tests/docker/dockerfiles/fedora-i386-cross.docker b/tests/docker/dockerfiles/fedora-i386-cross.docker index 66cdb06c19..8004fd8ee5 100644 --- a/tests/docker/dockerfiles/fedora-i386-cross.docker +++ b/tests/docker/dockerfiles/fedora-i386-cross.docker @@ -6,6 +6,7 @@ ENV PACKAGES \ findutils \ gcc \ git \ + libffi-devel.i686 \ libtasn1-devel.i686 \ libzstd-devel.i686 \ make \ diff --git a/tests/docker/dockerfiles/fedora-win32-cross.docker b/tests/docker/dockerfiles/fedora-win32-cross.docker index 3733df63e9..a638afb525 100644 --- a/tests/docker/dockerfiles/fedora-win32-cross.docker +++ b/tests/docker/dockerfiles/fedora-win32-cross.docker @@ -19,6 +19,7 @@ ENV PACKAGES \ mingw32-gmp \ mingw32-gnutls \ mingw32-gtk3 \ + mingw32-libffi \ mingw32-libjpeg-turbo \ mingw32-libpng \ mingw32-libtasn1 \ diff --git a/tests/docker/dockerfiles/fedora-win64-cross.docker b/tests/docker/dockerfiles/fedora-win64-cross.docker index 2564ce4979..f53007ac86 100644 --- a/tests/docker/dockerfiles/fedora-win64-cross.docker +++ b/tests/docker/dockerfiles/fedora-win64-cross.docker @@ -18,6 +18,7 @@ ENV PACKAGES \ mingw64-glib2 \ mingw64-gmp \ mingw64-gtk3 \ + mingw64-libffi \ mingw64-libjpeg-turbo \ mingw64-libpng \ mingw64-libtasn1 \ diff --git a/tests/docker/dockerfiles/fedora.docker b/tests/docker/dockerfiles/fedora.docker index 0979c0e1f4..00cac5d61c 100644 --- a/tests/docker/dockerfiles/fedora.docker +++ b/tests/docker/dockerfiles/fedora.docker @@ -33,6 +33,7 @@ ENV PACKAGES \ libepoxy-devel \ libfdt-devel \ libbpf-devel \ + libffi-devel \ libiscsi-devel \ libjpeg-devel \ libpmem-devel \ diff --git a/tests/docker/dockerfiles/ubuntu.docker b/tests/docker/dockerfiles/ubuntu.docker index 98a527361c..24d1647a65 100644 --- a/tests/docker/dockerfiles/ubuntu.docker +++ b/tests/docker/dockerfiles/ubuntu.docker @@ -28,6 +28,7 @@ ENV PACKAGES \ libdrm-dev \ libepoxy-dev \ libfdt-dev \ + libffi-dev \ libgbm-dev \ libgnutls28-dev \ libgtk-3-dev \ diff --git a/tests/docker/dockerfiles/ubuntu1804.docker b/tests/docker/dockerfiles/ubuntu1804.docker index c0d3642507..2f1ec7c42b 100644 --- a/tests/docker/dockerfiles/ubuntu1804.docker +++ b/tests/docker/dockerfiles/ubuntu1804.docker @@ -16,6 +16,7 @@ ENV PACKAGES \ libdrm-dev \ libepoxy-dev \ libfdt-dev \ + libffi-dev \ libgbm-dev \ libgtk-3-dev \ libibverbs-dev \ diff --git a/tests/docker/dockerfiles/ubuntu2004.docker b/tests/docker/dockerfiles/ubuntu2004.docker index f1e0ebad49..fe993fe2a3 100644 --- a/tests/docker/dockerfiles/ubuntu2004.docker +++ b/tests/docker/dockerfiles/ubuntu2004.docker @@ -19,6 +19,7 @@ ENV PACKAGES flex bison \ libdrm-dev \ libepoxy-dev \ libfdt-dev \ + libffi-dev \ libgbm-dev \ libgtk-3-dev \ libibverbs-dev \