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target-sparc: Implement BCOPY/BFILL inline 

Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <rth@twiddle.net>
master
Richard Henderson 2016-07-14 12:46:19 -07:00
parent 7268adebfd
commit 34810610ac
1 changed files with 63 additions and 0 deletions
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63
target-sparc/translate.c
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@ -2036,6 +2036,8 @@ typedef enum {
GET_ASI_DTWINX,
GET_ASI_BLOCK,
GET_ASI_SHORT,
GET_ASI_BCOPY,
GET_ASI_BFILL,
} ASIType;
typedef struct {
@ -2077,6 +2079,14 @@ static DisasASI get_asi(DisasContext *dc, int insn, TCGMemOp memop)
mem_idx = MMU_PHYS_IDX;
type = GET_ASI_DIRECT;
break;
case ASI_M_BCOPY: /* Block copy, sta access */
mem_idx = MMU_KERNEL_IDX;
type = GET_ASI_BCOPY;
break;
case ASI_M_BFILL: /* Block fill, stda access */
mem_idx = MMU_KERNEL_IDX;
type = GET_ASI_BFILL;
break;
}
} else {
gen_exception(dc, TT_PRIV_INSN);
@ -2294,6 +2304,38 @@ static void gen_st_asi(DisasContext *dc, TCGv src, TCGv addr,
gen_address_mask(dc, addr);
tcg_gen_qemu_st_tl(src, addr, da.mem_idx, da.memop);
break;
#if !defined(TARGET_SPARC64) && !defined(CONFIG_USER_ONLY)
case GET_ASI_BCOPY:
/* Copy 32 bytes from the address in SRC to ADDR. */
/* ??? The original qemu code suggests 4-byte alignment, dropping
the low bits, but the only place I can see this used is in the
Linux kernel with 32 byte alignment, which would make more sense
as a cacheline-style operation. */
{
TCGv saddr = tcg_temp_new();
TCGv daddr = tcg_temp_new();
TCGv four = tcg_const_tl(4);
TCGv_i32 tmp = tcg_temp_new_i32();
int i;
tcg_gen_andi_tl(saddr, src, -4);
tcg_gen_andi_tl(daddr, addr, -4);
for (i = 0; i < 32; i += 4) {
/* Since the loads and stores are paired, allow the
copy to happen in the host endianness. */
tcg_gen_qemu_ld_i32(tmp, saddr, da.mem_idx, MO_UL);
tcg_gen_qemu_st_i32(tmp, daddr, da.mem_idx, MO_UL);
tcg_gen_add_tl(saddr, saddr, four);
tcg_gen_add_tl(daddr, daddr, four);
}
tcg_temp_free(saddr);
tcg_temp_free(daddr);
tcg_temp_free(four);
tcg_temp_free_i32(tmp);
}
break;
#endif
default:
{
TCGv_i32 r_asi = tcg_const_i32(da.asi);
@ -2766,6 +2808,27 @@ static void gen_stda_asi(DisasContext *dc, TCGv hi, TCGv addr,
gen_address_mask(dc, addr);
tcg_gen_qemu_st_i64(t64, addr, da.mem_idx, da.memop);
break;
case GET_ASI_BFILL:
/* Store 32 bytes of T64 to ADDR. */
/* ??? The original qemu code suggests 8-byte alignment, dropping
the low bits, but the only place I can see this used is in the
Linux kernel with 32 byte alignment, which would make more sense
as a cacheline-style operation. */
{
TCGv d_addr = tcg_temp_new();
TCGv eight = tcg_const_tl(8);
int i;
tcg_gen_andi_tl(d_addr, addr, -8);
for (i = 0; i < 32; i += 8) {
tcg_gen_qemu_st_i64(t64, d_addr, da.mem_idx, da.memop);
tcg_gen_add_tl(d_addr, d_addr, eight);
}
tcg_temp_free(d_addr);
tcg_temp_free(eight);
}
break;
default:
{
TCGv_i32 r_asi = tcg_const_i32(da.asi);