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tcg/s390x: Implement tcg_out_ld/st for vector types

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Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-09-14 17:04:22 -07:00
parent 34ef767609
commit 2dabf74252
1 changed files with 120 additions and 12 deletions
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132
tcg/s390x/tcg-target.c.inc
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@ -265,6 +265,12 @@ typedef enum S390Opcode {
RX_STC = 0x42,
RX_STH = 0x40,
VRX_VL = 0xe706,
VRX_VLLEZ = 0xe704,
VRX_VST = 0xe70e,
VRX_VSTEF = 0xe70b,
VRX_VSTEG = 0xe70a,
NOP = 0x0707,
} S390Opcode;
@ -412,6 +418,16 @@ static void * const qemu_st_helpers[(MO_SIZE | MO_BSWAP) + 1] = {
static const tcg_insn_unit *tb_ret_addr;
uint64_t s390_facilities[3];
static inline bool is_general_reg(TCGReg r)
{
return r <= TCG_REG_R15;
}
static inline bool is_vector_reg(TCGReg r)
{
return r >= TCG_REG_V0 && r <= TCG_REG_V31;
}
static bool patch_reloc(tcg_insn_unit *src_rw, int type,
intptr_t value, intptr_t addend)
{
@ -529,6 +545,31 @@ static void tcg_out_insn_RSY(TCGContext *s, S390Opcode op, TCGReg r1,
#define tcg_out_insn_RX tcg_out_insn_RS
#define tcg_out_insn_RXY tcg_out_insn_RSY
static int RXB(TCGReg v1, TCGReg v2, TCGReg v3, TCGReg v4)
{
/*
* Shift bit 4 of each regno to its corresponding bit of RXB.
* RXB itself begins at bit 8 of the instruction so 8 - 4 = 4
* is the left-shift of the 4th operand.
*/
return ((v1 & 0x10) << (4 + 3))
| ((v2 & 0x10) << (4 + 2))
| ((v3 & 0x10) << (4 + 1))
| ((v4 & 0x10) << (4 + 0));
}
static void tcg_out_insn_VRX(TCGContext *s, S390Opcode op, TCGReg v1,
TCGReg b2, TCGReg x2, intptr_t d2, int m3)
{
tcg_debug_assert(is_vector_reg(v1));
tcg_debug_assert(d2 >= 0 && d2 <= 0xfff);
tcg_debug_assert(is_general_reg(x2));
tcg_debug_assert(is_general_reg(b2));
tcg_out16(s, (op & 0xff00) | ((v1 & 0xf) << 4) | x2);
tcg_out16(s, (b2 << 12) | d2);
tcg_out16(s, (op & 0x00ff) | RXB(v1, 0, 0, 0) | (m3 << 12));
}
/* Emit an opcode with "type-checking" of the format. */
#define tcg_out_insn(S, FMT, OP, ...) \
glue(tcg_out_insn_,FMT)(S, glue(glue(FMT,_),OP), ## __VA_ARGS__)
@ -705,25 +746,92 @@ static void tcg_out_mem(TCGContext *s, S390Opcode opc_rx, S390Opcode opc_rxy,
}
}
static void tcg_out_vrx_mem(TCGContext *s, S390Opcode opc_vrx,
TCGReg data, TCGReg base, TCGReg index,
tcg_target_long ofs, int m3)
{
if (ofs < 0 || ofs >= 0x1000) {
if (ofs >= -0x80000 && ofs < 0x80000) {
tcg_out_insn(s, RXY, LAY, TCG_TMP0, base, index, ofs);
base = TCG_TMP0;
index = TCG_REG_NONE;
ofs = 0;
} else {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, ofs);
if (index != TCG_REG_NONE) {
tcg_out_insn(s, RRE, AGR, TCG_TMP0, index);
}
index = TCG_TMP0;
ofs = 0;
}
}
tcg_out_insn_VRX(s, opc_vrx, data, base, index, ofs, m3);
}
/* load data without address translation or endianness conversion */
static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg data,
TCGReg base, intptr_t ofs)
static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg data,
TCGReg base, intptr_t ofs)
{
if (type == TCG_TYPE_I32) {
tcg_out_mem(s, RX_L, RXY_LY, data, base, TCG_REG_NONE, ofs);
} else {
tcg_out_mem(s, 0, RXY_LG, data, base, TCG_REG_NONE, ofs);
switch (type) {
case TCG_TYPE_I32:
if (likely(is_general_reg(data))) {
tcg_out_mem(s, RX_L, RXY_LY, data, base, TCG_REG_NONE, ofs);
break;
}
tcg_out_vrx_mem(s, VRX_VLLEZ, data, base, TCG_REG_NONE, ofs, MO_32);
break;
case TCG_TYPE_I64:
if (likely(is_general_reg(data))) {
tcg_out_mem(s, 0, RXY_LG, data, base, TCG_REG_NONE, ofs);
break;
}
/* fallthru */
case TCG_TYPE_V64:
tcg_out_vrx_mem(s, VRX_VLLEZ, data, base, TCG_REG_NONE, ofs, MO_64);
break;
case TCG_TYPE_V128:
/* Hint quadword aligned. */
tcg_out_vrx_mem(s, VRX_VL, data, base, TCG_REG_NONE, ofs, 4);
break;
default:
g_assert_not_reached();
}
}
static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg data,
TCGReg base, intptr_t ofs)
static void tcg_out_st(TCGContext *s, TCGType type, TCGReg data,
TCGReg base, intptr_t ofs)
{
if (type == TCG_TYPE_I32) {
tcg_out_mem(s, RX_ST, RXY_STY, data, base, TCG_REG_NONE, ofs);
} else {
tcg_out_mem(s, 0, RXY_STG, data, base, TCG_REG_NONE, ofs);
switch (type) {
case TCG_TYPE_I32:
if (likely(is_general_reg(data))) {
tcg_out_mem(s, RX_ST, RXY_STY, data, base, TCG_REG_NONE, ofs);
} else {
tcg_out_vrx_mem(s, VRX_VSTEF, data, base, TCG_REG_NONE, ofs, 1);
}
break;
case TCG_TYPE_I64:
if (likely(is_general_reg(data))) {
tcg_out_mem(s, 0, RXY_STG, data, base, TCG_REG_NONE, ofs);
break;
}
/* fallthru */
case TCG_TYPE_V64:
tcg_out_vrx_mem(s, VRX_VSTEG, data, base, TCG_REG_NONE, ofs, 0);
break;
case TCG_TYPE_V128:
/* Hint quadword aligned. */
tcg_out_vrx_mem(s, VRX_VST, data, base, TCG_REG_NONE, ofs, 4);
break;
default:
g_assert_not_reached();
}
}