diff options
Diffstat (limited to 'arch/sparc64/math-emu/math.c')
| -rw-r--r-- | arch/sparc64/math-emu/math.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/arch/sparc64/math-emu/math.c b/arch/sparc64/math-emu/math.c index 2ae05cd7b77..6ee496c2864 100644 --- a/arch/sparc64/math-emu/math.c +++ b/arch/sparc64/math-emu/math.c @@ -206,9 +206,29 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f) case FSTOQ: TYPE(3,3,1,1,1,0,0); break; case FDTOQ: TYPE(3,3,1,2,1,0,0); break; case FQTOI: TYPE(3,1,0,3,1,0,0); break; + + /* We can get either unimplemented or unfinished + * for these cases. Pre-Niagara systems generate + * unfinished fpop for SUBNORMAL cases, and Niagara + * always gives unimplemented fpop for fsqrt{s,d}. + */ + case FSQRTS: { + unsigned long x = current_thread_info()->xfsr[0]; + + x = (x >> 14) & 0xf; + TYPE(x,1,1,1,1,0,0); + break; + } + + case FSQRTD: { + unsigned long x = current_thread_info()->xfsr[0]; + + x = (x >> 14) & 0xf; + TYPE(x,2,1,2,1,0,0); + break; + } + /* SUBNORMAL - ftt == 2 */ - case FSQRTS: TYPE(2,1,1,1,1,0,0); break; - case FSQRTD: TYPE(2,2,1,2,1,0,0); break; case FADDD: case FSUBD: case FMULD: |