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[Qemu-ppc] [PULL 06/64] target-ppc: add cmprb instruction
From: |
David Gibson |
Subject: |
[Qemu-ppc] [PULL 06/64] target-ppc: add cmprb instruction |
Date: |
Wed, 7 Sep 2016 20:28:45 +1000 |
From: Nikunj A Dadhania <address@hidden>
ISA 3.0 Compare Ranged Byte instruction useful for
isupper/islower/isaplha kind of operation.
Signed-off-by: Nikunj A Dadhania <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
Signed-off-by: David Gibson <address@hidden>
---
target-ppc/translate.c | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index ca246ea..c64ce79 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -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),
--
2.7.4
- [Qemu-ppc] [PULL 36/64] ppc: Don't update NIP in dcbz and lscbx, (continued)
- [Qemu-ppc] [PULL 36/64] ppc: Don't update NIP in dcbz and lscbx, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 53/64] hw/ppc: use error_report instead of fprintf, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 61/64] ppc: Improve a few more helper flags, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 29/64] ppc: Make tlb_fill() use new exception helper, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 46/64] target-ppc: add dtstsfi[q] instructions, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 57/64] ppc: Stop dumping state on all exceptions in linux-user, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 64/64] tests: Check serial output of firmware boot of some machines, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 09/64] target-ppc: add cnttzd[.] instruction, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 14/64] target-ppc: add maddhd and maddhdu instruction, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 23/64] ppc: Make float_invalid_op_excp() pass the return address, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 06/64] target-ppc: add cmprb instruction,
David Gibson <=
- [Qemu-ppc] [PULL 25/64] ppc: Don't update the NIP in floating point generated code, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 35/64] ppc: Don't update NIP if not taking alignment exceptions, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 56/64] ppc: Fix catching some segfaults in user mode, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 42/64] ppc: Use a helper to generate "LE unsupported" alignment interrupts, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 51/64] target-ppc: add extswsli[.] instruction, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 43/64] ppc: load/store multiple and string insns don't do LE, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 49/64] target-ppc: add vslv instruction, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 24/64] ppc: Make float_check_status() pass the return address, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 28/64] ppc: Don't update NIP in lmw/stmw/icbi, David Gibson, 2016/09/07
- [Qemu-ppc] [PULL 59/64] ppc: Improve flags for helpers loading/writing the time facilities, David Gibson, 2016/09/07