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tcg/ppc: Use constant pool for movi

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2017-07-31 06:03:03 +00:00
parent 77bfc7c0b4
commit 53c89efd02
2 changed files with 31 additions and 4 deletions
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1
tcg/ppc/tcg-target.h
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@ -132,5 +132,6 @@ void tb_target_set_jmp_target(uintptr_t, uintptr_t, uintptr_t);
#ifdef CONFIG_SOFTMMU
#define TCG_TARGET_NEED_LDST_LABELS
#endif
#define TCG_TARGET_NEED_POOL_LABELS
#endif

34
tcg/ppc/tcg-target.inc.c
View File

@ -22,6 +22,9 @@
* THE SOFTWARE.
*/
#include "elf.h"
#include "tcg-pool.inc.c"
#if defined _CALL_DARWIN || defined __APPLE__
#define TCG_TARGET_CALL_DARWIN
#endif
@ -58,8 +61,6 @@
static tcg_insn_unit *tb_ret_addr;
#include "elf.h"
bool have_isa_2_06;
bool have_isa_3_00;
@ -224,9 +225,12 @@ static inline void tcg_out_bc_noaddr(TCGContext *s, int insn)
static void patch_reloc(tcg_insn_unit *code_ptr, int type,
intptr_t value, intptr_t addend)
{
tcg_insn_unit *target = (tcg_insn_unit *)value;
tcg_insn_unit *target;
tcg_insn_unit old;
value += addend;
target = (tcg_insn_unit *)value;
tcg_debug_assert(addend == 0);
switch (type) {
case R_PPC_REL14:
reloc_pc14(code_ptr, target);
@ -234,6 +238,12 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type,
case R_PPC_REL24:
reloc_pc24(code_ptr, target);
break;
case R_PPC_ADDR16:
assert(value == (int16_t)value);
old = *code_ptr;
old = deposit32(old, 0, 16, value);
*code_ptr = old;
break;
default:
tcg_abort();
}
@ -676,6 +686,14 @@ static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret,
return;
}
/* Use the constant pool, if possible. */
if (!in_prologue && USE_REG_TB) {
new_pool_label(s, arg, R_PPC_ADDR16, s->code_ptr,
-(intptr_t)s->code_gen_ptr);
tcg_out32(s, LD | TAI(ret, TCG_REG_TB, 0));
return;
}
tmp = arg >> 31 >> 1;
tcg_out_movi(s, TCG_TYPE_I32, ret, tmp);
if (tmp) {
@ -1858,6 +1876,14 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is_64)
#endif
}
static void tcg_out_nop_fill(tcg_insn_unit *p, int count)
{
int i;
for (i = 0; i < count; ++i) {
p[i] = NOP;
}
}
/* Parameters for function call generation, used in tcg.c. */
#define TCG_TARGET_STACK_ALIGN 16
#define TCG_TARGET_EXTEND_ARGS 1