@@ -819,6 +819,10 @@ static const struct opcode32 arm_opcodes[] =
{ARM_EXT_V3M, 0x00800090, 0x0fa000f0, "%22?sumull%20's%c\t%12-15r, %16-19r, %0-3r, %8-11r"},
{ARM_EXT_V3M, 0x00a00090, 0x0fa000f0, "%22?sumlal%20's%c\t%12-15r, %16-19r, %0-3r, %8-11r"},
+ /* IDIV instructions. */
+ {ARM_EXT_DIV, 0x0710f010, 0x0ff0f0f0, "sdiv%c\t%16-19r, %0-3r, %8-11r"},
+ {ARM_EXT_DIV, 0x0730f010, 0x0ff0f0f0, "udiv%c\t%16-19r, %0-3r, %8-11r"},
+
/* V7 instructions. */
{ARM_EXT_V7, 0xf450f000, 0xfd70f000, "pli\t%P"},
{ARM_EXT_V7, 0x0320f0f0, 0x0ffffff0, "dbg%c\t#%0-3d"},
@@ -591,6 +591,16 @@ static inline void tcg_out_smull32(TCGContext *s,
}
}
+static inline void tcg_out_sdiv(TCGContext *s, int cond, int rd, int rn, int rm)
+{
+ tcg_out32(s, 0x0710f010 | (cond << 28) | (rd << 16) | rn | (rm << 8));
+}
+
+static inline void tcg_out_udiv(TCGContext *s, int cond, int rd, int rn, int rm)
+{
+ tcg_out32(s, 0x0730f010 | (cond << 28) | (rd << 16) | rn | (rm << 8));
+}
+
static inline void tcg_out_ext8s(TCGContext *s, int cond,
int rd, int rn)
{
@@ -1869,6 +1879,25 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
args[3], args[4], const_args[2]);
break;
+ case INDEX_op_div_i32:
+ tcg_out_sdiv(s, COND_AL, args[0], args[1], args[2]);
+ break;
+ case INDEX_op_divu_i32:
+ tcg_out_udiv(s, COND_AL, args[0], args[1], args[2]);
+ break;
+ case INDEX_op_rem_i32:
+ tcg_out_sdiv(s, COND_AL, TCG_REG_R8, args[1], args[2]);
+ tcg_out_mul32(s, COND_AL, TCG_REG_R8, TCG_REG_R8, args[2]);
+ tcg_out_dat_reg(s, COND_AL, ARITH_SUB, args[0], args[1], TCG_REG_R8,
+ SHIFT_IMM_LSL(0));
+ break;
+ case INDEX_op_remu_i32:
+ tcg_out_udiv(s, COND_AL, TCG_REG_R8, args[1], args[2]);
+ tcg_out_mul32(s, COND_AL, TCG_REG_R8, TCG_REG_R8, args[2]);
+ tcg_out_dat_reg(s, COND_AL, ARITH_SUB, args[0], args[1], TCG_REG_R8,
+ SHIFT_IMM_LSL(0));
+ break;
+
default:
tcg_abort();
}
@@ -1955,6 +1984,13 @@ static const TCGTargetOpDef arm_op_defs[] = {
{ INDEX_op_deposit_i32, { "r", "0", "ri" } },
+#if TCG_TARGET_HAS_div_i32
+ { INDEX_op_div_i32, { "r", "r", "r" } },
+ { INDEX_op_rem_i32, { "r", "r", "r" } },
+ { INDEX_op_divu_i32, { "r", "r", "r" } },
+ { INDEX_op_remu_i32, { "r", "r", "r" } },
+#endif
+
{ -1 },
};
@@ -56,7 +56,6 @@ typedef enum {
#define TCG_TARGET_CALL_STACK_OFFSET 0
/* optional instructions */
-#define TCG_TARGET_HAS_div_i32 0
#define TCG_TARGET_HAS_ext8s_i32 1
#define TCG_TARGET_HAS_ext16s_i32 1
#define TCG_TARGET_HAS_ext8u_i32 0 /* and r0, r1, #0xff */
@@ -75,6 +74,12 @@ typedef enum {
#define TCG_TARGET_HAS_movcond_i32 1
#define TCG_TARGET_HAS_muls2_i32 1
+#ifdef __ARM_ARCH_EXT_IDIV__
+#define TCG_TARGET_HAS_div_i32 1
+#else
+#define TCG_TARGET_HAS_div_i32 0
+#endif
+
extern bool tcg_target_deposit_valid(int ofs, int len);
#define TCG_TARGET_deposit_i32_valid tcg_target_deposit_valid
An armv7 extension implements division, present on Cortex A15. Signed-off-by: Richard Henderson <rth@twiddle.net> --- disas/arm.c | 4 ++++ tcg/arm/tcg-target.c | 36 ++++++++++++++++++++++++++++++++++++ tcg/arm/tcg-target.h | 7 ++++++- 3 files changed, 46 insertions(+), 1 deletion(-)