diff options
| -rw-r--r-- | arch/sparc/kernel/unaligned_64.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c index 62098a89bbbf..d89e97b374cf 100644 --- a/arch/sparc/kernel/unaligned_64.c +++ b/arch/sparc/kernel/unaligned_64.c @@ -436,24 +436,26 @@ extern void sun4v_data_access_exception(struct pt_regs *regs, int handle_ldf_stq(u32 insn, struct pt_regs *regs) { unsigned long addr = compute_effective_address(regs, insn, 0); - int freg = ((insn >> 25) & 0x1e) | ((insn >> 20) & 0x20); + int freg; struct fpustate *f = FPUSTATE; int asi = decode_asi(insn, regs); - int flag = (freg < 32) ? FPRS_DL : FPRS_DU; + int flag; perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0); save_and_clear_fpu(); current_thread_info()->xfsr[0] &= ~0x1c000; - if (freg & 3) { - current_thread_info()->xfsr[0] |= (6 << 14) /* invalid_fp_register */; - do_fpother(regs); - return 0; - } if (insn & 0x200000) { /* STQ */ u64 first = 0, second = 0; + freg = ((insn >> 25) & 0x1e) | ((insn >> 20) & 0x20); + flag = (freg < 32) ? FPRS_DL : FPRS_DU; + if (freg & 3) { + current_thread_info()->xfsr[0] |= (6 << 14) /* invalid_fp_register */; + do_fpother(regs); + return 0; + } if (current_thread_info()->fpsaved[0] & flag) { first = *(u64 *)&f->regs[freg]; second = *(u64 *)&f->regs[freg+2]; @@ -513,6 +515,12 @@ int handle_ldf_stq(u32 insn, struct pt_regs *regs) case 0x100000: size = 4; break; default: size = 2; break; } + if (size == 1) + freg = (insn >> 25) & 0x1f; + else + freg = ((insn >> 25) & 0x1e) | ((insn >> 20) & 0x20); + flag = (freg < 32) ? FPRS_DL : FPRS_DU; + for (i = 0; i < size; i++) data[i] = 0; |