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, 54 insertions, 0 deletions

diff --git a/tests32/test13.c b/tests32/test13.c
new file mode 100644
index 00000000..38dd891f
--- /dev/null
+++ b/tests32/test13.c
@@ -0,0 +1,54 @@
+#include <ucontext.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static ucontext_t uctx_main, uctx_func1, uctx_func2;
+
+#define handle_error(msg) \
+    do { perror(msg); exit(EXIT_FAILURE); } while (0)
+
+static void func1(void)
+{
+    printf("func1: started\n");
+    printf("func1: swapcontext(&uctx_func1, &uctx_func2)\n");
+    if (swapcontext(&uctx_func1, &uctx_func2) == -1)
+        handle_error("swapcontext");
+    printf("func1: returning\n");
+}
+
+static void func2(int a, int b)
+{
+    printf("func2: started (%d, %d)\n", a, b);
+    printf("func2: swapcontext(&uctx_func2, &uctx_func1)\n");
+    if (swapcontext(&uctx_func2, &uctx_func1) == -1)
+        handle_error("swapcontext");
+    printf("func2: returning\n");
+}
+
+int main(int argc, char *argv[])
+{
+    char func1_stack[16384];
+    char func2_stack[16384];
+
+    if (getcontext(&uctx_func1) == -1)
+        handle_error("getcontext");
+    uctx_func1.uc_stack.ss_sp = func1_stack;
+    uctx_func1.uc_stack.ss_size = sizeof(func1_stack);
+    uctx_func1.uc_link = &uctx_main;
+    makecontext(&uctx_func1, func1, 0);
+
+    if (getcontext(&uctx_func2) == -1)
+        handle_error("getcontext");
+    uctx_func2.uc_stack.ss_sp = func2_stack;
+    uctx_func2.uc_stack.ss_size = sizeof(func2_stack);
+    /* Successor context is f1(), unless argc > 1 */
+    uctx_func2.uc_link = (argc > 1) ? NULL : &uctx_func1;
+    makecontext(&uctx_func2, func2, 2, 1, 2);
+
+    printf("main: swapcontext(&uctx_main, &uctx_func2)\n");
+    if (swapcontext(&uctx_main, &uctx_func2) == -1)
+        handle_error("swapcontext");
+
+    printf("main: exiting\n");
+    exit(EXIT_SUCCESS);
+}
\ No newline at end of file