diff mbox series

[RFC,2/3] tests/tcg/ppc64le: load 33-bits constant with paddi

Message ID 20210415214138.563795-3-matheus.ferst@eldorado.org.br (mailing list archive)
State New
Headers show
Series tests/tcg/ppc64le: paddi tests | expand

Commit Message

Matheus K. Ferst April 15, 2021, 9:41 p.m. UTC
From: Matheus Ferst <matheus.ferst@eldorado.org.br>

This test checks that we can correctly load a 33-bit constant and its
two's complement. At least until version 1.1-0, POWER10 Functional
Simulation fails this test, processing the immediate as if it were
32-bits instead of 34, so it's probably something to keep an eye on.

Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
---
 tests/tcg/ppc64/Makefile.target   |  5 +++++
 tests/tcg/ppc64le/Makefile.target |  5 +++++
 tests/tcg/ppc64le/pli_33bits.c    | 22 ++++++++++++++++++++++
 3 files changed, 32 insertions(+)
 create mode 100644 tests/tcg/ppc64le/pli_33bits.c
diff mbox series

Patch

diff --git a/tests/tcg/ppc64/Makefile.target b/tests/tcg/ppc64/Makefile.target
index 0c6a4585fc..6eccd2c06f 100644
--- a/tests/tcg/ppc64/Makefile.target
+++ b/tests/tcg/ppc64/Makefile.target
@@ -10,4 +10,9 @@  PPC64_TESTS=bcdsub
 endif
 bcdsub: CFLAGS += -mpower8-vector
 
+ifneq ($(DOCKER_IMAGE)$(CROSS_CC_HAS_POWER10),)
+PPC64LE_TESTS += pli_33bits
+endif
+pli_33bits: CFLAGS += -mpower10
+
 TESTS += $(PPC64_TESTS)
diff --git a/tests/tcg/ppc64le/Makefile.target b/tests/tcg/ppc64le/Makefile.target
index 1acfcff94a..2003eab2df 100644
--- a/tests/tcg/ppc64le/Makefile.target
+++ b/tests/tcg/ppc64le/Makefile.target
@@ -9,4 +9,9 @@  PPC64LE_TESTS=bcdsub
 endif
 bcdsub: CFLAGS += -mpower8-vector
 
+ifneq ($(DOCKER_IMAGE)$(CROSS_CC_HAS_POWER10),)
+PPC64LE_TESTS += pli_33bits
+endif
+pli_33bits: CFLAGS += -mpower10
+
 TESTS += $(PPC64LE_TESTS)
diff --git a/tests/tcg/ppc64le/pli_33bits.c b/tests/tcg/ppc64le/pli_33bits.c
new file mode 100644
index 0000000000..848cbce165
--- /dev/null
+++ b/tests/tcg/ppc64le/pli_33bits.c
@@ -0,0 +1,22 @@ 
+#include <assert.h>
+#include <unistd.h>
+#include <signal.h>
+
+int main(void)
+{
+    long int var;
+    struct sigaction action;
+
+    action.sa_handler = _exit;
+    sigaction(SIGABRT, &action, NULL);
+
+    asm(" pli %0,0x1FFFFFFFF\n"
+        : "=r"(var));
+    assert(var == 0x1FFFFFFFF);
+
+    asm(" pli %0,-0x1FFFFFFFF\n"
+       : "=r"(var));
+    assert(var == -0x1FFFFFFFF);
+
+    return 0;
+}