Added preliminary Box32 support (#1760)

* Improve the ReserveHigMemory helper function

* [BOX32] Added some wrapping infrastructure

* [BOX32] More wrapped 32bits lib infrastructure

* [BOX32] Added callback and tls 32bits handling

* [BOX32] Added more 32bits, around wrappers and elfs

* [BOX32] Added the 32bits version of myalign

* [BOX32] More wrapped libs and 32bits fixes and imrpovments

* [BOX32] Added some 32bits tests

* [BOX32] Try to enable some Box32 build and test on the CI

* [BOX32] Disable Box32 testing on CI platform that use qemu

* [BOX32] Another attempt to disable Box32 testing on CI platform that use qemu

* [BOX32] Small fix for another attempt to disable Box32 testing on CI platform that use qemu

* [BOX32] Yet another fix for another attempt to disable Box32 testing on CI platform that use qemu

* [BOX32] Fixed a typo in CI script

* [BOX32] Better scratch alighnment and enabled more tests

* [BOX32] Added (partial) wrapped 32bits librt

* [BOX32] Added mention of Box32 in README

* [BOX32] Added phtread handling, and numerous fixes to 32bits handling. [ARM64_DYNAREC] Fixed access to segment with negative offset

* [BOX32] Added system libs and cpp testing, plus some more fixes

* [BOX32] Fix previous commit

* [BOX32] Better stack adjustment for 32bits processes

* [BOX32] Added getenv wrapped 32bits function and friends

* [BOX32] Don't look for box86 for a Box32 build

* [BOX32] Don't do 32bits cppThreads test for now on CI

* [BOX32] Enabled a few more 32bits tests

* [BOX32] For ld_lib_path for both CppThreads tests

* [BOX32] [ANDROID] Some Fixes for Android Build

* [BOX32] Still need to disable cppThread_32bits test on CI for some reason

* [BOX32] [ANDROID] Don't show PreInit Array Warning (#1751)

* [BOX32] [ANDROID] One More Fix for Android Build That I forgotten to … (#1752)

* [BOX32] [ANDROID] One More Fix for Android Build That I forgotten to push before

* [BOX32] [ANDROID] Try to Create __libc_init

* [BOX32] [ANDROID] Try to disable NEEDED_LIBS for now (libdl is not wrapped)

* [BOX32] Updated generated files

* [BOX32] Added 32bits context functions

* [BOX32] Added 32bits signal handling

* [BOX32] Added some missing 32bits elfloader functions

* [BOX32] Fix build on x86_64 machine

* [BOX32] Better fix for x86_64 build

* [BOX32] Actually added missing libs, and re-enabled cppThreads_32bits test

* [BOX32] Added wrapped 32bits libdl

* [BOX32] Try to re-enabled Box32 test on CI for ARM64 builds

* [BOX32] fine-tuning Box32 test on CI for ARM64 builds

* [BOX32] More fine-tuning to Box32 test on CI for ARM64 builds

* [BOX32] Enabled Box32 test on CI for LA64 and RV64 builds too

* [BOX32] re-Disabled Box32 test on CI for LA64 and RV64 builds, not working for now

* [BOX32] Temporarily disabled cppThreads_32bits test on CI

---------

Co-authored-by: KreitinnSoftware <pablopro5051@gmail.com>
Co-authored-by: KreitinnSoftware <80591934+KreitinnSoftware@users.noreply.github.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/src/wrapped32/wrappedldlinux.c b/src/wrapped32/wrappedldlinux.c
new file mode 100755
index 00000000..f0c8bf89
--- /dev/null
+++ b/src/wrapped32/wrappedldlinux.c
@@ -0,0 +1,58 @@
+#define _GNU_SOURCE         /* See feature_test_macros(7) */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dlfcn.h>
+
+#include "wrappedlibs.h"
+
+#include "debug.h"
+#include "wrapper32.h"
+#include "bridge.h"
+#include "librarian/library_private.h"
+#include "x64emu.h"
+#include "emu/x64emu_private.h"
+#include "elfloader.h"
+#include "box32context.h"
+
+typedef struct my32_tls_s {
+    int         i;
+    uint32_t     o;
+} my32_tls_t;
+
+EXPORT void* my32___tls_get_addr(x64emu_t* emu, void* p)
+{
+    my32_tls_t *t = (my32_tls_t*)p;
+    return GetDTatOffset(emu->context, t->i, t->o);
+}
+
+EXPORT void* my32____tls_get_addr(x64emu_t* emu)
+{
+    // the GNU version (with 3 '_') use register for the parameter!
+    my32_tls_t *t = (my32_tls_t*)from_ptrv(R_EAX);
+    return GetDTatOffset(emu->context, t->i, t->o);
+}
+
+EXPORT ptr_t my32___libc_stack_end;
+static void stSetup32(box64context_t* context)
+{
+    my32___libc_stack_end = to_ptrv(context->stack);   // is this the end, or should I add stasz?
+}
+
+// don't try to load the actual ld-linux (because name is variable), just use box64 itself, as it's linked to ld-linux
+static const char* ldlinuxName = "ld-linux.so.3";
+#define LIBNAME ldlinux
+
+// fake (ignored) _r_data structure
+EXPORT void* my32__r_debug[5];
+
+#define PRE_INIT\
+    if(1)                                                           \
+        lib->w.lib = dlopen(NULL, RTLD_LAZY | RTLD_GLOBAL);    \
+    else
+
+#define CUSTOM_INIT         \
+    stSetup32(box64);         \
+
+#include "wrappedlib_init32.h"
+