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tcg: Pass the opcode width to target_parse_constraint 

This will let us choose how to interpret a given constraint
depending on whether the opcode is 32- or 64-bit.  Which will
let us share more constraint combinations between opcodes.

At the same time, change the interface to return the advanced
pointer instead of passing it in/out by reference.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2016-11-18 11:50:59 +01:00
parent f69d277ece
commit 069ea736b5
10 changed files with 53 additions and 85 deletions
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15
tcg/aarch64/tcg-target.inc.c
View File

@ -115,12 +115,10 @@ static inline void patch_reloc(tcg_insn_unit *code_ptr, int type,
#define TCG_CT_CONST_MONE 0x800
/* parse target specific constraints */
static int target_parse_constraint(TCGArgConstraint *ct,
const char **pct_str)
static const char *target_parse_constraint(TCGArgConstraint *ct,
const char *ct_str, TCGType type)
{
const char *ct_str = *pct_str;
switch (ct_str[0]) {
switch (*ct_str++) {
case 'r':
ct->ct |= TCG_CT_REG;
tcg_regset_set32(ct->u.regs, 0, (1ULL << TCG_TARGET_NB_REGS) - 1);
@ -150,12 +148,9 @@ static int target_parse_constraint(TCGArgConstraint *ct,
ct->ct |= TCG_CT_CONST_ZERO;
break;
default:
return -1;
return NULL;
}
ct_str++;
*pct_str = ct_str;
return 0;
return ct_str;
}
static inline bool is_aimm(uint64_t val)

15
tcg/arm/tcg-target.inc.c
View File

@ -114,12 +114,10 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type,
#define TCG_CT_CONST_ZERO 0x800
/* parse target specific constraints */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
static const char *target_parse_constraint(TCGArgConstraint *ct,
const char *ct_str, TCGType type)
{
const char *ct_str;
ct_str = *pct_str;
switch (ct_str[0]) {
switch (*ct_str++) {
case 'I':
ct->ct |= TCG_CT_CONST_ARM;
break;
@ -172,12 +170,9 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
break;
default:
return -1;
return NULL;
}
ct_str++;
*pct_str = ct_str;
return 0;
return ct_str;
}
static inline uint32_t rotl(uint32_t val, int n)

14
tcg/i386/tcg-target.inc.c
View File

@ -166,12 +166,10 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type,
}
/* parse target specific constraints */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
static const char *target_parse_constraint(TCGArgConstraint *ct,
const char *ct_str, TCGType type)
{
const char *ct_str;
ct_str = *pct_str;
switch(ct_str[0]) {
switch(*ct_str++) {
case 'a':
ct->ct |= TCG_CT_REG;
tcg_regset_set_reg(ct->u.regs, TCG_REG_EAX);
@ -249,11 +247,9 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
break;
default:
return -1;
return NULL;
}
ct_str++;
*pct_str = ct_str;
return 0;
return ct_str;
}
/* test if a constant matches the constraint */

14
tcg/ia64/tcg-target.inc.c
View File

@ -721,12 +721,10 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type,
*/
/* parse target specific constraints */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
static const char *target_parse_constraint(TCGArgConstraint *ct,
const char *ct_str, TCGType type)
{
const char *ct_str;
ct_str = *pct_str;
switch(ct_str[0]) {
switch(*ct_str++) {
case 'r':
ct->ct |= TCG_CT_REG;
tcg_regset_set(ct->u.regs, 0xffffffffffffffffull);
@ -750,11 +748,9 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
ct->ct |= TCG_CT_CONST_ZERO;
break;
default:
return -1;
return NULL;
}
ct_str++;
*pct_str = ct_str;
return 0;
return ct_str;
}
/* test if a constant matches the constraint */

14
tcg/mips/tcg-target.inc.c
View File

@ -186,12 +186,10 @@ static inline bool is_p2m1(tcg_target_long val)
}
/* parse target specific constraints */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
static const char *target_parse_constraint(TCGArgConstraint *ct,
const char *ct_str, TCGType type)
{
const char *ct_str;
ct_str = *pct_str;
switch(ct_str[0]) {
switch(*ct_str++) {
case 'r':
ct->ct |= TCG_CT_REG;
tcg_regset_set(ct->u.regs, 0xffffffff);
@ -238,11 +236,9 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
ct->ct |= TCG_CT_CONST_ZERO;
break;
default:
return -1;
return NULL;
}
ct_str++;
*pct_str = ct_str;
return 0;
return ct_str;
}
/* test if a constant matches the constraint */

14
tcg/ppc/tcg-target.inc.c
View File

@ -259,12 +259,10 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type,
}
/* parse target specific constraints */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
static const char *target_parse_constraint(TCGArgConstraint *ct,
const char *ct_str, TCGType type)
{
const char *ct_str;
ct_str = *pct_str;
switch (ct_str[0]) {
switch (*ct_str++) {
case 'A': case 'B': case 'C': case 'D':
ct->ct |= TCG_CT_REG;
tcg_regset_set_reg(ct->u.regs, 3 + ct_str[0] - 'A');
@ -311,11 +309,9 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
ct->ct |= TCG_CT_CONST_ZERO;
break;
default:
return -1;
return NULL;
}
ct_str++;
*pct_str = ct_str;
return 0;
return ct_str;
}
/* test if a constant matches the constraint */

14
tcg/s390/tcg-target.inc.c
View File

@ -359,11 +359,10 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type,
}
/* parse target specific constraints */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
static const char *target_parse_constraint(TCGArgConstraint *ct,
const char *ct_str, TCGType type)
{
const char *ct_str = *pct_str;
switch (ct_str[0]) {
switch (*ct_str++) {
case 'r': /* all registers */
ct->ct |= TCG_CT_REG;
tcg_regset_set32(ct->u.regs, 0, 0xffff);
@ -404,12 +403,9 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
ct->ct |= TCG_CT_CONST_ZERO;
break;
default:
return -1;
return NULL;
}
ct_str++;
*pct_str = ct_str;
return 0;
return ct_str;
}
/* Immediates to be used with logical OR. This is an optimization only,

14
tcg/sparc/tcg-target.inc.c
View File

@ -319,12 +319,10 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type,
}
/* parse target specific constraints */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
static const char *target_parse_constraint(TCGArgConstraint *ct,
const char *ct_str, TCGType type)
{
const char *ct_str;
ct_str = *pct_str;
switch (ct_str[0]) {
switch (*ct_str++) {
case 'r':
ct->ct |= TCG_CT_REG;
tcg_regset_set32(ct->u.regs, 0, 0xffffffff);
@ -360,11 +358,9 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
ct->ct |= TCG_CT_CONST_ZERO;
break;
default:
return -1;
return NULL;
}
ct_str++;
*pct_str = ct_str;
return 0;
return ct_str;
}
/* test if a constant matches the constraint */

12
tcg/tcg.c
View File

@ -96,7 +96,8 @@ static void tcg_register_jit_int(void *buf, size_t size,
__attribute__((unused));
/* Forward declarations for functions declared and used in tcg-target.inc.c. */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str);
static const char *target_parse_constraint(TCGArgConstraint *ct,
const char *ct_str, TCGType type);
static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg1,
intptr_t arg2);
static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg);
@ -1231,7 +1232,8 @@ static void process_op_defs(TCGContext *s)
for (op = 0; op < NB_OPS; op++) {
TCGOpDef *def = &tcg_op_defs[op];
const TCGTargetOpDef *tdefs;
int i, nb_args, ok;
TCGType type;
int i, nb_args;
if (def->flags & TCG_OPF_NOT_PRESENT) {
continue;
@ -1246,6 +1248,7 @@ static void process_op_defs(TCGContext *s)
/* Missing TCGTargetOpDef entry. */
tcg_debug_assert(tdefs != NULL);
type = (def->flags & TCG_OPF_64BIT ? TCG_TYPE_I64 : TCG_TYPE_I32);
for (i = 0; i < nb_args; i++) {
const char *ct_str = tdefs->args_ct_str[i];
/* Incomplete TCGTargetOpDef entry. */
@ -1279,9 +1282,10 @@ static void process_op_defs(TCGContext *s)
ct_str++;
break;
default:
ok = target_parse_constraint(&def->args_ct[i], &ct_str);
ct_str = target_parse_constraint(&def->args_ct[i],
ct_str, type);
/* Typo in TCGTargetOpDef constraint. */
tcg_debug_assert(ok == 0);
tcg_debug_assert(ct_str != NULL);
}
}
}

12
tcg/tci/tcg-target.inc.c
View File

@ -384,10 +384,10 @@ static void patch_reloc(tcg_insn_unit *code_ptr, int type,
}
/* Parse target specific constraints. */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
static const char *target_parse_constraint(TCGArgConstraint *ct,
const char *ct_str, TCGType type)
{
const char *ct_str = *pct_str;
switch (ct_str[0]) {
switch (*ct_str++) {
case 'r':
case 'L': /* qemu_ld constraint */
case 'S': /* qemu_st constraint */
@ -395,11 +395,9 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
tcg_regset_set32(ct->u.regs, 0, BIT(TCG_TARGET_NB_REGS) - 1);
break;
default:
return -1;
return NULL;
}
ct_str++;
*pct_str = ct_str;
return 0;
return ct_str;
}
#if defined(CONFIG_DEBUG_TCG_INTERPRETER)