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target/arm: Add read/write_neon_element32

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Model these off the aa64 read/write_vec_element functions.
Use it within translate-neon.c.inc.  The new functions do
not allocate or free temps, so this rearranges the calling
code a bit.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20201030022618.785675-6-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2020-11-02 16:52:13 +00:00 • committed by Peter Maydell
parent d8719785fd
commit a712266f5d
2 changed files with 183 additions and 99 deletions
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26
target/arm/translate.c
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@ -1165,6 +1165,32 @@ static inline void neon_store_reg32(TCGv_i32 var, int reg)
tcg_gen_st_i32(var, cpu_env, vfp_reg_offset(false, reg));
}
static void read_neon_element32(TCGv_i32 dest, int reg, int ele, MemOp size)
{
long off = neon_element_offset(reg, ele, size);
switch (size) {
case MO_32:
tcg_gen_ld_i32(dest, cpu_env, off);
break;
default:
g_assert_not_reached();
}
}
static void write_neon_element32(TCGv_i32 src, int reg, int ele, MemOp size)
{
long off = neon_element_offset(reg, ele, size);
switch (size) {
case MO_32:
tcg_gen_st_i32(src, cpu_env, off);
break;
default:
g_assert_not_reached();
}
}
static TCGv_ptr vfp_reg_ptr(bool dp, int reg)
{
TCGv_ptr ret = tcg_temp_new_ptr();