Thumb encoding: add test case for assertion failure caused by
"ldr.w pc, [reg, #imm]". See #333428. (dimitry@google.com)
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13959 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/none/tests/arm/v6intThumb.c b/none/tests/arm/v6intThumb.c
index 668c415..811bbb3 100644
--- a/none/tests/arm/v6intThumb.c
+++ b/none/tests/arm/v6intThumb.c
@@ -342,6 +342,57 @@
///////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////
+__attribute__((noinline))
+void test_ldr_pc(void) {
+ // special case of ldr PC, [rN, +imm?]
+ printf("tests for instructions modifying pc (ldr pc, add pc)\n");
+ {
+ unsigned int out;
+ unsigned int cpsr;
+ unsigned char tmpbuff[512]; // we use tmpbuff+432
+ int cvin = 0;
+
+ __asm__ volatile(
+ ".thumb;\n"
+ ".syntax unified ;\n"
+ "msr cpsr_f, %3 ;\n"
+ "mov r9, %2 ;\n"
+ "movw r2, #:lower16:.ldrwpclabel1 ;\n"
+ "movt r2, #:upper16:.ldrwpclabel1 ;\n"
+ "mov r0, #1 ;\n"
+ "orr r2, r0 ;\n" // set thumb bit to 1
+ "str r2, [r9, +#432] ;\n"
+ "bl .ldrwpclabel_continue ;\n"
+ ".align 4 ;\n"
+ ".ldrwpclabel1: \n"
+ "mov r1, #42 ;\n" // expected output value
+ "bl .ldrwpclabel_end ;\n"
+ ".ldrwpclabel_continue: \n"
+ "ldr.w pc, [r9, +#432] ;\n"
+ "mov r1, #0 ;\n" // should never get here
+ ".ldrwpclabel_end: \n"
+ "mov %0, r1 ;\n"
+ "mrs %1, cpsr ;\n"
+ : "=r"(out), "=r"(cpsr)
+ : "r"(tmpbuff), "r"(gen_cvin(cvin))
+ : "r9", "r2", "r0", "r1", "cc", "memory"
+ );
+
+ // print
+ printf("ldr.w pc, [r9, +#432] :: r1 0x%08x c:v-in %d, "
+ "cpsr 0x%08x %c%c%c%c\n", \
+ out, \
+ cvin, \
+ cpsr & 0xffff0000, \
+ ((1<<31) & cpsr) ? 'N' : ' ', \
+ ((1<<30) & cpsr) ? 'Z' : ' ', \
+ ((1<<29) & cpsr) ? 'C' : ' ', \
+ ((1<<28) & cpsr) ? 'V' : ' ' \
+ ); \
+
+ }
+}
+
static int old_main(void)
{
@@ -595,6 +646,7 @@
TESTCARRYEND
+ test_ldr_pc();
#if 0
printf("ROR\n");
TESTCARRY
diff --git a/none/tests/arm/v6intThumb.stdout.exp b/none/tests/arm/v6intThumb.stdout.exp
index 52404cf..9169f88 100644
--- a/none/tests/arm/v6intThumb.stdout.exp
+++ b/none/tests/arm/v6intThumb.stdout.exp
@@ -17316,6 +17316,8 @@
ldrsb r1, label_magic_ldrsb :: rd 0x0000001b, cpsr 0xc0000000 NZ
ldrsh r1, label_magic_ldrsh :: rd 0xffff881b, cpsr 0xc0000000 NZ
vldr d0, label_magic_vldr :: s0 0x8191881b s1 0x18fe9c93, cpsr 0xc0000000 NZ
+tests for instructions modifying pc (ldr pc, add pc)
+ldr.w pc, [r9, +#432] :: r1 0x0000002a c:v-in 0, cpsr 0xc0000000 NZ
MUL
mul r0, r1, r2 :: rd 0x00000000 rm 0x00000000, rn 0x00000000, c:v-in 0, cpsr 0xc0000000 NZ
mul r0, r1, r2 :: rd 0x00000000 rm 0xffffffff, rn 0x00000000, c:v-in 0, cpsr 0xc0000000 NZ
