mirror of https://github.com/proxmox/mirror_qemu
target-ppc: add cmprb instruction
ISA 3.0 Compare Ranged Byte instruction useful for isupper/islower/isaplha kind of operation. Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>master
parent
c5b2b9ce12
commit
f2442ef93c
|
@ -817,6 +817,44 @@ static void gen_cmpli(DisasContext *ctx)
|
|||
}
|
||||
}
|
||||
|
||||
/* cmprb - range comparison: isupper, isaplha, islower*/
|
||||
static void gen_cmprb(DisasContext *ctx)
|
||||
{
|
||||
TCGv_i32 src1 = tcg_temp_new_i32();
|
||||
TCGv_i32 src2 = tcg_temp_new_i32();
|
||||
TCGv_i32 src2lo = tcg_temp_new_i32();
|
||||
TCGv_i32 src2hi = tcg_temp_new_i32();
|
||||
TCGv_i32 crf = cpu_crf[crfD(ctx->opcode)];
|
||||
|
||||
tcg_gen_trunc_tl_i32(src1, cpu_gpr[rA(ctx->opcode)]);
|
||||
tcg_gen_trunc_tl_i32(src2, cpu_gpr[rB(ctx->opcode)]);
|
||||
|
||||
tcg_gen_andi_i32(src1, src1, 0xFF);
|
||||
tcg_gen_ext8u_i32(src2lo, src2);
|
||||
tcg_gen_shri_i32(src2, src2, 8);
|
||||
tcg_gen_ext8u_i32(src2hi, src2);
|
||||
|
||||
tcg_gen_setcond_i32(TCG_COND_LEU, src2lo, src2lo, src1);
|
||||
tcg_gen_setcond_i32(TCG_COND_LEU, src2hi, src1, src2hi);
|
||||
tcg_gen_and_i32(crf, src2lo, src2hi);
|
||||
|
||||
if (ctx->opcode & 0x00200000) {
|
||||
tcg_gen_shri_i32(src2, src2, 8);
|
||||
tcg_gen_ext8u_i32(src2lo, src2);
|
||||
tcg_gen_shri_i32(src2, src2, 8);
|
||||
tcg_gen_ext8u_i32(src2hi, src2);
|
||||
tcg_gen_setcond_i32(TCG_COND_LEU, src2lo, src2lo, src1);
|
||||
tcg_gen_setcond_i32(TCG_COND_LEU, src2hi, src1, src2hi);
|
||||
tcg_gen_and_i32(src2lo, src2lo, src2hi);
|
||||
tcg_gen_or_i32(crf, crf, src2lo);
|
||||
}
|
||||
tcg_gen_shli_i32(crf, crf, CRF_GT);
|
||||
tcg_temp_free_i32(src1);
|
||||
tcg_temp_free_i32(src2);
|
||||
tcg_temp_free_i32(src2lo);
|
||||
tcg_temp_free_i32(src2hi);
|
||||
}
|
||||
|
||||
/* isel (PowerPC 2.03 specification) */
|
||||
static void gen_isel(DisasContext *ctx)
|
||||
{
|
||||
|
@ -9897,6 +9935,7 @@ GEN_HANDLER(cmpi, 0x0B, 0xFF, 0xFF, 0x00400000, PPC_INTEGER),
|
|||
GEN_HANDLER(cmpl, 0x1F, 0x00, 0x01, 0x00400000, PPC_INTEGER),
|
||||
GEN_HANDLER(cmpli, 0x0A, 0xFF, 0xFF, 0x00400000, PPC_INTEGER),
|
||||
GEN_HANDLER_E(cmpb, 0x1F, 0x1C, 0x0F, 0x00000001, PPC_NONE, PPC2_ISA205),
|
||||
GEN_HANDLER_E(cmprb, 0x1F, 0x00, 0x06, 0x00400001, PPC_NONE, PPC2_ISA300),
|
||||
GEN_HANDLER(isel, 0x1F, 0x0F, 0xFF, 0x00000001, PPC_ISEL),
|
||||
GEN_HANDLER(addi, 0x0E, 0xFF, 0xFF, 0x00000000, PPC_INTEGER),
|
||||
GEN_HANDLER(addic, 0x0C, 0xFF, 0xFF, 0x00000000, PPC_INTEGER),
|
||||
|
|
Loading…
Reference in New Issue