diff options
Diffstat (limited to 'results/classifier/accel-gemma3:12b/tcg/1790')
| -rw-r--r-- | results/classifier/accel-gemma3:12b/tcg/1790 | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/results/classifier/accel-gemma3:12b/tcg/1790 b/results/classifier/accel-gemma3:12b/tcg/1790 new file mode 100644 index 000000000..5645b063f --- /dev/null +++ b/results/classifier/accel-gemma3:12b/tcg/1790 @@ -0,0 +1,30 @@ + +[AARCH64] STGP instruction is not writing the value of the second register to memory +Description of problem: +My application is built with Clang 16 and the option -fsanitize=memtag-stack. +It means the the MTE protection is activated for the stack. +The local variables are tagged and the compiler is often using the STGP instruction "Store Allocation Tag and Pair of registers" in order to transfer the value of two 64-bit registers to memory. +The following instruction was not working as expected: + 18004: 69000895 stgp x21, x2, [x4] +The value of the second register x2 is not transferred to the memory. +Only x21 is written. + +I think that the issue is in trans_STGP(). +We don't call finalize_memop_pair() like we do for in the general trans_STP(). + +``` +diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c +index 7d0c8f79a7..f599f3e136 100644 +--- a/target/arm/tcg/translate-a64.c ++++ b/target/arm/tcg/translate-a64.c +@@ -3034,6 +3034,8 @@ static bool trans_STGP(DisasContext *s, arg_ldstpair *a) + + tcg_rt = cpu_reg(s, a->rt); + tcg_rt2 = cpu_reg(s, a->rt2); ++ mop = a->sz + 1; ++ mop = finalize_memop_pair(s, mop); + + assert(a->sz == 3); +``` + +With this fix, my OS (Kinibi) is now able to boot. |