From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: sw@weilnetz.de
Subject: [PATCH 22/23] tcg/tci: Implement 64-bit division
Date: Wed, 27 Jan 2021 22:23:30 -1000 [thread overview]
Message-ID: <20210128082331.196801-23-richard.henderson@linaro.org> (raw)
In-Reply-To: <20210128082331.196801-1-richard.henderson@linaro.org>
Trivially implemented like other arithmetic.
Tested via check-tcg and the ppc64 target.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/tci/tcg-target.h | 4 ++--
tcg/tci.c | 28 ++++++++++++++++++++++------
tcg/tci/tcg-target.c.inc | 12 ++++--------
3 files changed, 28 insertions(+), 16 deletions(-)
diff --git a/tcg/tci/tcg-target.h b/tcg/tci/tcg-target.h
index bb784e018e..7fc349a3de 100644
--- a/tcg/tci/tcg-target.h
+++ b/tcg/tci/tcg-target.h
@@ -100,8 +100,8 @@
#define TCG_TARGET_HAS_extract_i64 0
#define TCG_TARGET_HAS_sextract_i64 0
#define TCG_TARGET_HAS_extract2_i64 0
-#define TCG_TARGET_HAS_div_i64 0
-#define TCG_TARGET_HAS_rem_i64 0
+#define TCG_TARGET_HAS_div_i64 1
+#define TCG_TARGET_HAS_rem_i64 1
#define TCG_TARGET_HAS_ext8s_i64 1
#define TCG_TARGET_HAS_ext16s_i64 1
#define TCG_TARGET_HAS_ext32s_i64 1
diff --git a/tcg/tci.c b/tcg/tci.c
index 32931ea611..0065c854a4 100644
--- a/tcg/tci.c
+++ b/tcg/tci.c
@@ -889,14 +889,30 @@ uintptr_t QEMU_DISABLE_CFI tcg_qemu_tb_exec(CPUArchState *env,
t2 = tci_read_ri64(regs, &tb_ptr);
tci_write_reg(regs, t0, t1 * t2);
break;
-#if TCG_TARGET_HAS_div_i64
case INDEX_op_div_i64:
- case INDEX_op_divu_i64:
- case INDEX_op_rem_i64:
- case INDEX_op_remu_i64:
- TODO();
+ t0 = *tb_ptr++;
+ t1 = tci_read_ri64(regs, &tb_ptr);
+ t2 = tci_read_ri64(regs, &tb_ptr);
+ tci_write_reg(regs, t0, (int64_t)t1 / (int64_t)t2);
+ break;
+ case INDEX_op_divu_i64:
+ t0 = *tb_ptr++;
+ t1 = tci_read_ri64(regs, &tb_ptr);
+ t2 = tci_read_ri64(regs, &tb_ptr);
+ tci_write_reg(regs, t0, (uint64_t)t1 / (uint64_t)t2);
+ break;
+ case INDEX_op_rem_i64:
+ t0 = *tb_ptr++;
+ t1 = tci_read_ri64(regs, &tb_ptr);
+ t2 = tci_read_ri64(regs, &tb_ptr);
+ tci_write_reg(regs, t0, (int64_t)t1 % (int64_t)t2);
+ break;
+ case INDEX_op_remu_i64:
+ t0 = *tb_ptr++;
+ t1 = tci_read_ri64(regs, &tb_ptr);
+ t2 = tci_read_ri64(regs, &tb_ptr);
+ tci_write_reg(regs, t0, (uint64_t)t1 % (uint64_t)t2);
break;
-#endif
case INDEX_op_and_i64:
t0 = *tb_ptr++;
t1 = tci_read_ri64(regs, &tb_ptr);
diff --git a/tcg/tci/tcg-target.c.inc b/tcg/tci/tcg-target.c.inc
index 842807ff2e..8c0e77a0be 100644
--- a/tcg/tci/tcg-target.c.inc
+++ b/tcg/tci/tcg-target.c.inc
@@ -146,12 +146,10 @@ static const TCGTargetOpDef tcg_target_op_defs[] = {
{ INDEX_op_add_i64, { R, RI, RI } },
{ INDEX_op_sub_i64, { R, RI, RI } },
{ INDEX_op_mul_i64, { R, RI, RI } },
-#if TCG_TARGET_HAS_div_i64
{ INDEX_op_div_i64, { R, R, R } },
{ INDEX_op_divu_i64, { R, R, R } },
{ INDEX_op_rem_i64, { R, R, R } },
{ INDEX_op_remu_i64, { R, R, R } },
-#endif
{ INDEX_op_and_i64, { R, RI, RI } },
#if TCG_TARGET_HAS_andc_i64
{ INDEX_op_andc_i64, { R, RI, RI } },
@@ -678,6 +676,10 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
case INDEX_op_sar_i64:
case INDEX_op_rotl_i64: /* Optional (TCG_TARGET_HAS_rot_i64). */
case INDEX_op_rotr_i64: /* Optional (TCG_TARGET_HAS_rot_i64). */
+ case INDEX_op_div_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
+ case INDEX_op_divu_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
+ case INDEX_op_rem_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
+ case INDEX_op_remu_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
tcg_out_r(s, args[0]);
tcg_out_ri64(s, const_args[1], args[1]);
tcg_out_ri64(s, const_args[2], args[2]);
@@ -691,12 +693,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
tcg_debug_assert(args[4] <= UINT8_MAX);
tcg_out8(s, args[4]);
break;
- case INDEX_op_div_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
- case INDEX_op_divu_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
- case INDEX_op_rem_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
- case INDEX_op_remu_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
- TODO();
- break;
case INDEX_op_brcond_i64:
tcg_out_r(s, args[0]);
tcg_out_ri64(s, const_args[1], args[1]);
--
2.25.1
next prev parent reply other threads:[~2021-01-28 8:38 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-28 8:23 [PATCH 00/23] TCI fixes and cleanups Richard Henderson
2021-01-28 8:23 ` [PATCH 01/23] configure: Fix --enable-tcg-interpreter Richard Henderson
2021-01-28 11:47 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 02/23] tcg: Manage splitwx in tc_ptr_to_region_tree by hand Richard Henderson
2021-01-28 13:09 ` Alex Bennée
2021-01-28 13:54 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 03/23] exec: Make tci_tb_ptr thread-local Richard Henderson
2021-01-28 8:23 ` [PATCH 04/23] tcg/tci: Implement INDEX_op_ld16s_i32 Richard Henderson
2021-01-28 13:59 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 05/23] tcg/tci: Implement INDEX_op_ld8s_i64 Richard Henderson
2021-01-28 13:59 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 06/23] tcg/tci: Inline tci_write_reg32s into the only caller Richard Henderson
2021-01-28 15:28 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 07/23] tcg/tci: Inline tci_write_reg8 into its callers Richard Henderson
2021-01-28 15:30 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 08/23] tcg/tci: Inline tci_write_reg16 into the only caller Richard Henderson
2021-01-28 15:30 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 09/23] tcg/tci: Inline tci_write_reg32 into all callers Richard Henderson
2021-01-28 15:31 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 10/23] tcg/tci: Inline tci_write_reg64 into 64-bit callers Richard Henderson
2021-01-28 15:32 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 11/23] tcg/tci: Merge INDEX_op_ld8u_{i32,i64} Richard Henderson
2021-01-28 16:18 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 12/23] tcg/tci: Merge INDEX_op_ld8s_{i32,i64} Richard Henderson
2021-01-28 16:18 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 13/23] tcg/tci: Merge INDEX_op_ld16u_{i32,i64} Richard Henderson
2021-01-28 16:19 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 14/23] tcg/tci: Merge INDEX_op_ld16s_{i32,i64} Richard Henderson
2021-01-28 16:20 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 15/23] tcg/tci: Merge INDEX_op_{ld_i32,ld32u_i64} Richard Henderson
2021-01-28 16:20 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 16/23] tcg/tci: Merge INDEX_op_st8_{i32,i64} Richard Henderson
2021-01-28 16:20 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 17/23] tcg/tci: Merge INDEX_op_st16_{i32,i64} Richard Henderson
2021-01-28 16:20 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 18/23] tcg/tci: Move stack bounds check to compile-time Richard Henderson
2021-01-28 16:37 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 19/23] tcg/tci: Merge INDEX_op_{st_i32,st32_i64} Richard Henderson
2021-01-28 16:38 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 20/23] tcg/tci: Use g_assert_not_reached Richard Henderson
2021-01-28 10:07 ` Stefan Weil
2021-01-28 15:34 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 21/23] tcg/tci: Remove dead code for TCG_TARGET_HAS_div2_* Richard Henderson
2021-01-28 15:36 ` Alex Bennée
2021-01-28 15:39 ` Stefan Weil
2021-01-28 17:56 ` Richard Henderson
2021-01-28 8:23 ` Richard Henderson [this message]
2021-01-28 10:04 ` [PATCH 22/23] tcg/tci: Implement 64-bit division Stefan Weil
2021-01-28 17:56 ` Richard Henderson
2021-01-28 15:38 ` Alex Bennée
2021-01-28 8:23 ` [PATCH 23/23] tcg/tci: Remove TODO as unused Richard Henderson
2021-01-28 15:38 ` Alex Bennée
2021-01-28 15:38 ` [PATCH 00/23] TCI fixes and cleanups Alex Bennée
2021-01-28 16:39 ` Alex Bennée
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