diff options
Diffstat (limited to 'vm/mterp/armv6t2/unop.S')
| -rw-r--r-- | vm/mterp/armv6t2/unop.S | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/vm/mterp/armv6t2/unop.S b/vm/mterp/armv6t2/unop.S new file mode 100644 index 0000000..58465fe --- /dev/null +++ b/vm/mterp/armv6t2/unop.S @@ -0,0 +1,20 @@ +%default {"preinstr":""} + /* + * Generic 32-bit unary operation. Provide an "instr" line that + * specifies an instruction that performs "result = op r0". + * This could be an ARM instruction or a function call. + * + * for: neg-int, not-int, neg-float, int-to-float, float-to-int, + * int-to-byte, int-to-char, int-to-short + */ + /* unop vA, vB */ + mov r3, rINST, lsr #12 @ r3<- B + ubfx r9, rINST, #8, #4 @ r9<- A + GET_VREG(r0, r3) @ r0<- vB + $preinstr @ optional op; may set condition codes + FETCH_ADVANCE_INST(1) @ advance rPC, load rINST + $instr @ r0<- op, r0-r3 changed + GET_INST_OPCODE(ip) @ extract opcode from rINST + SET_VREG(r0, r9) @ vAA<- r0 + GOTO_OPCODE(ip) @ jump to next instruction + /* 8-9 instructions */ |