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ARM: Add basic unary bytecode instructions.

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This commit is contained in:
Mike Pall 2011-03-29 02:31:47 +02:00
parent ca494b72a9
commit 7b0a125cf7
1 changed files with 97 additions and 10 deletions
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107
src/buildvm_arm.dasc
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@ -684,7 +684,7 @@ static void build_subroutines(BuildCtx *ctx)
|
|.ffunc_bit_op band, and
|.ffunc_bit_op bor, or
|.ffunc_bit_op bxor, xor
|.ffunc_bit_op bxor, eor
|
|.ffunc_bit bswap
| NYI
@ -850,16 +850,67 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
/* -- Unary ops --------------------------------------------------------- */
case BC_MOV:
| NYI
| // RA = dst*8, RC = src
| lsl RC, RC, #3
| ins_next1
| ldrd CARG12, [BASE, RC]
| ins_next2
| strd CARG12, [BASE, RA]
| ins_next3
break;
case BC_NOT:
| NYI
| // RA = dst*8, RC = src
| add RC, BASE, RC, lsl #3
| ins_next1
| ldr CARG1, [RC, #4]
| add RA, BASE, RA
| ins_next2
| cmn CARG1, #-LJ_TTRUE
| mvnls CARG2, #~LJ_TFALSE
| mvnhi CARG2, #~LJ_TTRUE
| str CARG2, [RA, #4]
| ins_next3
break;
case BC_UNM:
| NYI
| // RA = dst*8, RC = src
| lsl RC, RC, #3
| ldrd CARG12, [BASE, RC]
| ins_next1
| ins_next2
| cmn CARG2, #-LJ_TISNUM
| bne >5
| rsbs CARG1, CARG1, #0
| bvs >4
|9:
| strd CARG12, [BASE, RA]
| ins_next3
|4:
| mov CARG2, #0x01e00000 // 2^31.
| mov CARG1, #0
| orr CARG2, CARG2, #0x40000000
| b <9
|5:
| bhi ->vmeta_unm
| add CARG2, CARG2, #0x80000000
| b <9
break;
case BC_LEN:
| NYI
| // RA = dst*8, RC = src
| lsl RC, RC, #3
| ldrd CARG12, [BASE, RC]
| checkstr CARG2, >2
| ldr CARG1, STR:CARG1->len
|1:
| mvn CARG2, #~LJ_TISNUM
| ins_next1
| ins_next2
| strd CARG12, [BASE, RA]
| ins_next3
|2:
| checktab CARG2, ->vmeta_len
| blx extern lj_tab_len // (GCtab *t)
| // Returns uint32_t (but less than 2^31).
| b <1
break;
/* -- Binary ops -------------------------------------------------------- */
@ -893,7 +944,14 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
/* -- Constant ops ------------------------------------------------------ */
case BC_KSTR:
| NYI
| // RA = dst*8, RC = str_const (~)
| mvn RC, RC
| ins_next1
| ldr CARG1, [KBASE, RC, lsl #2]
| ins_next2
| mvn CARG2, #~LJ_TSTR
| strd CARG12, [BASE, RA]
| ins_next3
break;
case BC_KCDATA:
#if LJ_HASFFI
@ -901,16 +959,45 @@ static void build_ins(BuildCtx *ctx, BCOp op, int defop)
#endif
break;
case BC_KSHORT:
| NYI
| // RA = dst*8, (RC = int16_literal)
| mov CARG1, INS, asr #16 // Refetch sign-extended reg.
| mvn CARG2, #~LJ_TISNUM
| ins_next1
| ins_next2
| strd CARG12, [BASE, RA]
| ins_next3
break;
case BC_KNUM:
| NYI
| // RA = dst*8, RC = num_const
| lsl RC, RC, #3
| ins_next1
| ldrd CARG12, [KBASE, RC]
| ins_next2
| strd CARG12, [BASE, RA]
| ins_next3
break;
case BC_KPRI:
| NYI
| // RA = dst*8, RC = primitive_type (~)
| add RA, BASE, RA
| mvn RC, RC
| ins_next1
| ins_next2
| str RC, [RA, #4]
| ins_next3
break;
case BC_KNIL:
| NYI
| // RA = base*8, RC = end
| add RA, BASE, RA
| add RC, BASE, RC, lsl #3
| mvn CARG1, #~LJ_TNIL
| str CARG1, [RA, #4]
| add RA, RA, #8
|1:
| str CARG1, [RA, #4]
| cmp RA, RC
| add RA, RA, #8
| blt <1
| ins_next_
break;
/* -- Upvalue and function ops ------------------------------------------ */