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tcg/arm: Implement tcg_out_ld/st for vector types

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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-05-03 16:48:03 -07:00
parent 000cf4777a
commit 6e49fad23f
1 changed files with 64 additions and 6 deletions
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70
tcg/arm/tcg-target.c.inc
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@ -172,6 +172,9 @@ typedef enum {
INSN_NOP_v6k = 0xe320f000,
/* Otherwise the assembler uses mov r0,r0 */
INSN_NOP_v4 = (COND_AL << 28) | ARITH_MOV,
INSN_VLD1 = 0xf4200000, /* VLD1 (multiple single elements) */
INSN_VST1 = 0xf4000000, /* VST1 (multiple single elements) */
} ARMInsn;
#define INSN_NOP (use_armv7_instructions ? INSN_NOP_v6k : INSN_NOP_v4)
@ -1093,6 +1096,33 @@ static TCGCond tcg_out_cmp2(TCGContext *s, const TCGArg *args,
}
}
/*
* Note that TCGReg references Q-registers.
* Q-regno = 2 * D-regno, so shift left by 1 whlie inserting.
*/
static uint32_t encode_vd(TCGReg rd)
{
tcg_debug_assert(rd >= TCG_REG_Q0);
return (extract32(rd, 3, 1) << 22) | (extract32(rd, 0, 3) << 13);
}
static void tcg_out_vldst(TCGContext *s, ARMInsn insn,
TCGReg rd, TCGReg rn, int offset)
{
if (offset != 0) {
if (check_fit_imm(offset) || check_fit_imm(-offset)) {
tcg_out_dat_rIN(s, COND_AL, ARITH_ADD, ARITH_SUB,
TCG_REG_TMP, rn, offset, true);
} else {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP, offset);
tcg_out_dat_reg(s, COND_AL, ARITH_ADD,
TCG_REG_TMP, TCG_REG_TMP, rn, 0);
}
rn = TCG_REG_TMP;
}
tcg_out32(s, insn | (rn << 16) | encode_vd(rd) | 0xf);
}
#ifdef CONFIG_SOFTMMU
#include "../tcg-ldst.c.inc"
@ -2200,16 +2230,44 @@ static void tcg_target_init(TCGContext *s)
tcg_regset_set_reg(s->reserved_regs, TCG_VEC_TMP);
}
static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg arg,
TCGReg arg1, intptr_t arg2)
static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg arg,
TCGReg arg1, intptr_t arg2)
{
tcg_out_ld32u(s, COND_AL, arg, arg1, arg2);
switch (type) {
case TCG_TYPE_I32:
tcg_out_ld32u(s, COND_AL, arg, arg1, arg2);
return;
case TCG_TYPE_V64:
/* regs 1; size 8; align 8 */
tcg_out_vldst(s, INSN_VLD1 | 0x7d0, arg, arg1, arg2);
return;
case TCG_TYPE_V128:
/* regs 2; size 8; align 16 */
tcg_out_vldst(s, INSN_VLD1 | 0xae0, arg, arg1, arg2);
return;
default:
g_assert_not_reached();
}
}
static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
TCGReg arg1, intptr_t arg2)
static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
TCGReg arg1, intptr_t arg2)
{
tcg_out_st32(s, COND_AL, arg, arg1, arg2);
switch (type) {
case TCG_TYPE_I32:
tcg_out_st32(s, COND_AL, arg, arg1, arg2);
return;
case TCG_TYPE_V64:
/* regs 1; size 8; align 8 */
tcg_out_vldst(s, INSN_VST1 | 0x7d0, arg, arg1, arg2);
return;
case TCG_TYPE_V128:
/* regs 2; size 8; align 16 */
tcg_out_vldst(s, INSN_VST1 | 0xae0, arg, arg1, arg2);
return;
default:
g_assert_not_reached();
}
}
static inline bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val,