Release v1.3.0

.github/workflows/buildcommit.yml

@@ -163,7 +163,12 @@ jobs:
       - name: test
         if: ${{ matrix.native == 'yes' }}
         timeout-minutes: 1
-        run: vs2022\${{matrix.folder}}\Debug\test.exe
+        shell: cmd
+        run: |
+          vs2022\${{matrix.folder}}\Debug\test.exe
+          set RC=%ERRORLEVEL%
+          echo test.exe exit %RC%
+          exit /b %RC%
       - name: Upload build artifacts
         uses: actions/upload-artifact@v7.0.0
         with:

CHANGELOG.md

@@ -7,12 +7,35 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.3.0] - 2026-10-15
+
 ### Added
-- FreeBSD, OpenBSD and NetBSD (amd64, `sysv_amd64` ABI) are built and tested on every commit by a new `build and test bsd` workflow.
+- `armhf`, a 32-bit ARM hard-float ABI (AAPCS-VFP). `__ARM_PCS_VFP` selects it. Soft-float stays `arm32`. CI and the release archive include `lib/armhf`.
+- `docs/platform-abi.md`, the current contract for switching and register spills. `docs/abi-register-audit.md` remains the historical record of that audit.
+- `test_09` checks that the caller's rounding mode survives `stackman_switch`, including a switch onto a saved stack. Soft-float `arm32` does not spill `FPSCR`, and the test expects the callback's mode to remain.
+- FreeBSD, OpenBSD and NetBSD (amd64, `sysv_amd64` ABI) are built and tested on every commit by a `build and test bsd` workflow.
+
+### Changed
+- `stackman_switch` spills floating-point control and status state and reloads it after the restore callback. `stackman_call` does not touch those registers.
+- `armhf` spills the whole `FPSCR`.
+- `aarch64` and `darwin_arm64` spill `FPCR` and `FPSR`.
+- `win_arm64` spills `FPSR` as well as `FPCR`.
+- `riscv64` spills the whole `fcsr`.
+- `sysv_i386` spills the x87 control word. `win_x64` spills `MXCSR`.
+- `win_x86` spills the x87 control word and `MXCSR`, so older compilers that emit x87 and current MSVC, which emits SSE2, each keep their rounding mode.
+- Softfp (`-mfloat-abi=softfp`) is not a supported platform. That build selects `arm32` and does not preserve `FPSCR`.
+- CI test steps stop after one minute.
 
 ### Fixed
+- `test_04` allocates 8KB for the `stackman_call` stack. Two MSVC Debug (`/ZI`) frames of the recursive callback overflowed a 1KB block into the heap header, so the x64 test failed intermittently.
+- RISC-V `stackman_call` leaves a null stack unchanged and passes the previous stack pointer to the callback.
+- Windows ARM64 no longer uses the live TEB register `x18` as a scratch in `stackman_switch` or `stackman_call`.
+- AArch64 `stackman_switch` keeps the frame pointer attached across a stack switch, and the unwind info covers the `FPCR` slot.
 - ABI detection now works on the BSDs: `tools/abiname.sh` used a `mktemp` template with three `X`s, which BSD `mktemp(1)` rejects.
 
+### Removed
+- Leftover Windows ARM32 sources, Visual Studio configurations, and `lib/win_arm`. Version 1.0.0 had already dropped that platform.
+
 ## [1.2.5] - 2026-06-23
 
 ### Changed
@@ -142,7 +165,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - GitHub Actions CI for automated building and testing
 - Visual Studio project files (VS2017, VS2019, VS2022)
 
-[Unreleased]: https://github.com/stackless-dev/stackman/compare/v1.2.5...HEAD
+[Unreleased]: https://github.com/stackless-dev/stackman/compare/v1.3.0...HEAD
+[1.3.0]: https://github.com/stackless-dev/stackman/releases/tag/v1.3.0
 [1.2.5]: https://github.com/stackless-dev/stackman/releases/tag/v1.2.5
 [1.2.4]: https://github.com/stackless-dev/stackman/releases/tag/v1.2.4
 [1.2.3]: https://github.com/stackless-dev/stackman/releases/tag/v1.2.3

README.md

@@ -12,7 +12,7 @@
 ║                                                              ║
 ║  Do you have a stack? Stackman is here to help.              ║
 ║                                                              ║
-║  v1.2.5 • 11 platforms • Stack switching simplified          ║
+║  v1.3.0 • 11 platforms • Stack switching simplified          ║
 ║                                                              ║
 ╚══════════════════════════════════════════════════════════════╝
 ```

stackman/stackman.h

@@ -4,11 +4,11 @@
 
 /* Version information */
 #define STACKMAN_VERSION_MAJOR 1
-#define STACKMAN_VERSION_MINOR 2
-#define STACKMAN_VERSION_PATCH 5
+#define STACKMAN_VERSION_MINOR 3
+#define STACKMAN_VERSION_PATCH 0
 
 /* Version as a string */
-#define STACKMAN_VERSION "1.2.5"
+#define STACKMAN_VERSION "1.3.0"
 
 /* Version as a single number for comparisons (MMmmpp: Major, minor, patch) */
 #define STACKMAN_VERSION_NUMBER ((STACKMAN_VERSION_MAJOR * 10000) + \

tests/test.c

@@ -7,6 +7,51 @@
 #include <stdlib.h>
 #include <stdint.h>
 
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+/* Name of the test currently running, so a fault names itself.
+ * stdout from a crashed process is lost when it is fully buffered. */
+static const char *current_test;
+
+static LONG WINAPI test_crash(EXCEPTION_POINTERS *info)
+{
+	EXCEPTION_RECORD *rec = info->ExceptionRecord;
+
+	fprintf(stderr, "exception 0x%08lx at %p during %s",
+		rec->ExceptionCode, rec->ExceptionAddress,
+		current_test ? current_test : "startup");
+	if (rec->ExceptionCode == EXCEPTION_ACCESS_VIOLATION &&
+	    rec->NumberParameters >= 2) {
+		fprintf(stderr, " %s %p",
+			rec->ExceptionInformation[0] ? "write" : "read",
+			(void *)rec->ExceptionInformation[1]);
+	}
+	fprintf(stderr, "\n");
+	fflush(stderr);
+	return EXCEPTION_CONTINUE_SEARCH;
+}
+#endif
+
+static void test_startup(void)
+{
+	setvbuf(stdout, NULL, _IONBF, 0);
+	setvbuf(stderr, NULL, _IONBF, 0);
+#ifdef _WIN32
+	SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX);
+	AddVectoredExceptionHandler(1, test_crash);
+#endif
+}
+
+static void test_enter(const char *name)
+{
+#ifdef _WIN32
+	current_test = name;
+#endif
+	printf("%s\n", name);
+}
+
 /* Soft-float arm32 does not spill FPSCR. Softfp selects that assembly. */
 #if defined(__arm__) && !defined(__aarch64__) && !defined(__ARM_PCS_VFP)
 #define STACKMAN_ROUND_ISOLATED 0
@@ -567,25 +612,36 @@ void test_09(void *stack_marker)
 int main(int argc, char*argv[])
 {
 	int stack_marker = 0;
+
+	test_startup();
+	test_enter("test_01");
 	test_01();
 	printf("test_01 ok\n");
+	test_enter("test_02");
 	test_02((void*)&stack_marker);
 	printf("test_02 ok\n");
 
+	test_enter("test_03");
 	test_03((void*)&stack_marker);
 	printf("test_03 ok\n");
 #ifdef TEST_04
+	test_enter("test_04");
 	test_04();
 	printf("test_04 ok\n");
+	test_enter("test_05");
 	test_05();
 	printf("test_05 ok\n");
 #endif
+	test_enter("test_06");
 	test_06();
 	printf("test_06 ok\n");
+	test_enter("test_07");
 	test_07();
 	printf("test_07 ok\n");
+	test_enter("test_08");
 	test_08();
 	printf("test_08 ok\n");
+	test_enter("test_09");
 	test_09((void*)&stack_marker);
 	printf("test_09 ok\n");
 	return 0;