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Add support for TLS in MicroBlaze

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* configure.ac: Add MicroBlaze TLS support detection.
 * configure: Regenerate.
 * config/microblaze/microblaze-protos.h: (microblaze_cannot_force_const_mem,
   microblaze_tls_referenced_p, symbol_mentioned_p,
   label_mentioned_p): Add prototypes.
 * config/microblaze/microblaze.c (microblaze_address_type): Add ADDRESS_TLS
   and tls_reloc address types.
   (microblaze_address_info): Add tls_reloc.
   (TARGET_HAVE_TLS): Define.
   (get_tls_get_addr, microblaze_tls_symbol_p, microblaze_tls_operand_p_1,
    microblaze_tls_referenced_p, microblaze_cannot_force_const_mem,
    symbol_mentioned_p, label_mentioned_p, tls_mentioned_p, load_tls_operand,
    microblaze_call_tls_get_addr, microblaze_legitimize_tls_address): New functions.
   (microblaze_classify_unspec): Handle UNSPEC_TLS.
   (get_base_reg): Use microblaze_tls_symbol_p.
   (microblaze_classify_address): Handle TLS.
   (microblaze_legitimate_pic_operand): Use symbol_mentioned_p, label_mentioned_p
    and microblaze_tls_referenced_p.
   (microblaze_legitimize_address): Handle TLS.
   (microblaze_address_insns): Handle ADDRESS_TLS.
   (pic_address_needs_scratch): Handle TLS.
   (print_operand_address): Handle TLS.
   (microblaze_expand_prologue): Check TLS_NEEDS_GOT.
   (microblaze_expand_move): Handle TLS.
   (microblaze_legitimate_constant_p): Check microblaze_cannot_force_const_mem
    and microblaze_tls_symbol_p.
   (TARGET_CANNOT_FORCE_CONST_MEM): Define.
 * config/microblaze/microblaze.h (TLS_NEEDS_GOT): Define
   (PIC_OFFSET_TABLE_REGNUM): Set.
 * config/microblaze/linux.h (TLS_NEEDS_GOT): Define.
 * config/microblaze/microblaze.md (UNSPEC_TLS): Define.
   (addsi3, movsi_internal2, movdf_internal): Update constraints
 * config/microblaze/predicates.md (arith_plus_operand): Define
   (move_operand): Redefine as move_src_operand, check microblaze_tls_referenced_p.



Co-Authored-By: David Holsgrove <david.holsgrove@xilinx.com>

From-SVN: r196659
This commit is contained in:
Edgar E. Iglesias 2013-03-14 15:43:23 +00:00 committed by Michael Eager
parent a7137ee176
commit 8cc9a5a584
9 changed files with 627 additions and 129 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
gcc/ChangeLog
View File

@ -1,3 +1,41 @@
2013-03-14 Edgar E. Iglesias <edgar.iglesias@xilinx.com>
David Holsgrove <david.holsgrove@xilinx.com>
* configure.ac: Add MicroBlaze TLS support detection.
* configure: Regenerate.
* config/microblaze/microblaze-protos.h: (microblaze_cannot_force_const_mem,
microblaze_tls_referenced_p, symbol_mentioned_p, label_mentioned_p):
Add prototypes.
* config/microblaze/microblaze.c (microblaze_address_type): Add ADDRESS_TLS
and tls_reloc address types.
(microblaze_address_info): Add tls_reloc.
(TARGET_HAVE_TLS): Define.
(get_tls_get_addr, microblaze_tls_symbol_p, microblaze_tls_operand_p_1,
microblaze_tls_referenced_p, microblaze_cannot_force_const_mem,
symbol_mentioned_p, label_mentioned_p, tls_mentioned_p, load_tls_operand,
microblaze_call_tls_get_addr, microblaze_legitimize_tls_address): New functions.
(microblaze_classify_unspec): Handle UNSPEC_TLS.
(get_base_reg): Use microblaze_tls_symbol_p.
(microblaze_classify_address): Handle TLS.
(microblaze_legitimate_pic_operand): Use symbol_mentioned_p, label_mentioned_p
and microblaze_tls_referenced_p.
(microblaze_legitimize_address): Handle TLS.
(microblaze_address_insns): Handle ADDRESS_TLS.
(pic_address_needs_scratch): Handle TLS.
(print_operand_address): Handle TLS.
(microblaze_expand_prologue): Check TLS_NEEDS_GOT.
(microblaze_expand_move): Handle TLS.
(microblaze_legitimate_constant_p): Check microblaze_cannot_force_const_mem
and microblaze_tls_symbol_p.
(TARGET_CANNOT_FORCE_CONST_MEM): Define.
* config/microblaze/microblaze.h (TLS_NEEDS_GOT): Define
(PIC_OFFSET_TABLE_REGNUM): Set.
* config/microblaze/linux.h (TLS_NEEDS_GOT): Define.
* config/microblaze/microblaze.md (UNSPEC_TLS): Define.
(addsi3, movsi_internal2, movdf_internal): Update constraints
* config/microblaze/predicates.md (arith_plus_operand): Define
(move_operand): Redefine as move_src_operand, check microblaze_tls_referenced_p.
2013-03-14 Ian Bolton <ian.bolton@arm.com>
* config/aarch64/aarch64.md: (*and<mode>3nr_compare0): Use CC_NZ.

3
gcc/config/microblaze/linux.h
View File

@ -22,6 +22,9 @@
#undef TARGET_SUPPORTS_PIC
#define TARGET_SUPPORTS_PIC 1
#undef TLS_NEEDS_GOT
#define TLS_NEEDS_GOT 1
#define DYNAMIC_LINKER "/lib/ld.so.1"
#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \

4
gcc/config/microblaze/microblaze-protos.h
View File

@ -50,6 +50,10 @@ extern void microblaze_declare_object (FILE *, const char *, const char *,
const char *, int);
extern void microblaze_asm_output_ident (const char *);
extern int microblaze_legitimate_pic_operand (rtx);
extern bool microblaze_tls_referenced_p (rtx);
extern int symbol_mentioned_p (rtx);
extern int label_mentioned_p (rtx);
extern bool microblaze_cannot_force_const_mem (enum machine_mode, rtx);
#endif /* RTX_CODE */
/* Declare functions in microblaze-c.c. */

604
gcc/config/microblaze/microblaze.c
View File

@ -84,7 +84,8 @@ enum microblaze_address_type
ADDRESS_CONST_INT,
ADDRESS_SYMBOLIC,
ADDRESS_GOTOFF,
ADDRESS_PLT
ADDRESS_PLT,
ADDRESS_TLS
};
/* Classifies symbols
@ -98,6 +99,15 @@ enum microblaze_symbol_type
SYMBOL_TYPE_GENERAL
};
/* TLS Address Type. */
enum tls_reloc {
TLS_GD,
TLS_LDM,
TLS_DTPREL,
TLS_IE,
TLS_LE
};
/* Classification of a MicroBlaze address. */
struct microblaze_address_info
{
@ -108,6 +118,7 @@ struct microblaze_address_info
rtx offset; /* Contains valid values on ADDRESS_CONST_INT and ADDRESS_REG. */
rtx symbol; /* Contains valid values on ADDRESS_SYMBOLIC. */
enum microblaze_symbol_type symbol_type;
enum tls_reloc tls_type;
};
/* Structure to be filled in by compute_frame_size with register
@ -215,6 +226,11 @@ static int microblaze_interrupt_function_p (tree);
section *sdata2_section;
#ifdef HAVE_AS_TLS
#undef TARGET_HAVE_TLS
#define TARGET_HAVE_TLS true
#endif
/* Return truth value if a CONST_DOUBLE is ok to be a legitimate constant. */
static bool
microblaze_const_double_ok (rtx op, enum machine_mode mode)
@ -287,6 +303,9 @@ simple_memory_operand (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED)
plus0 = XEXP (addr, 0);
plus1 = XEXP (addr, 1);
if (GET_CODE (plus0) != REG)
return 0;
if (GET_CODE (plus0) == REG && GET_CODE (plus1) == CONST_INT
&& SMALL_INT (plus1))
{
@ -386,6 +405,225 @@ microblaze_valid_base_register_p (rtx x,
&& microblaze_regno_ok_for_base_p (REGNO (x), strict));
}
/* Build the SYMBOL_REF for __tls_get_addr. */
static GTY(()) rtx tls_get_addr_libfunc;
static rtx
get_tls_get_addr (void)
{
if (!tls_get_addr_libfunc)
tls_get_addr_libfunc = init_one_libfunc ("__tls_get_addr");
return tls_get_addr_libfunc;
}
/* Return TRUE if X is a thread-local symbol. */
bool
microblaze_tls_symbol_p (rtx x)
{
if (!TARGET_HAVE_TLS)
return false;
if (GET_CODE (x) != SYMBOL_REF)
return false;
return SYMBOL_REF_TLS_MODEL (x) != 0;
}
static int
microblaze_tls_operand_p_1 (rtx *x, void *data ATTRIBUTE_UNUSED)
{
if (GET_CODE (*x) == SYMBOL_REF)
return SYMBOL_REF_TLS_MODEL (*x) != 0;
/* Don't recurse into UNSPEC_TLS looking for TLS symbols; these are
TLS offsets, not real symbol references. */
if (GET_CODE (*x) == UNSPEC && XINT (*x, 1) == UNSPEC_TLS)
return -1;
return 0;
}
/* Return TRUE if X contains any TLS symbol references. */
bool
microblaze_tls_referenced_p (rtx x)
{
if (!TARGET_HAVE_TLS)
return false;
return for_each_rtx (&x, microblaze_tls_operand_p_1, NULL);
}
bool
microblaze_cannot_force_const_mem (enum machine_mode mode ATTRIBUTE_UNUSED, rtx x)
{
return microblaze_tls_referenced_p(x);
}
/* Return TRUE if X references a SYMBOL_REF. */
int
symbol_mentioned_p (rtx x)
{
const char * fmt;
int i;
if (GET_CODE (x) == SYMBOL_REF)
return 1;
/* UNSPEC entries for a symbol include the SYMBOL_REF, but they
are constant offsets, not symbols. */
if (GET_CODE (x) == UNSPEC)
return 0;
fmt = GET_RTX_FORMAT (GET_CODE (x));
for (i = GET_RTX_LENGTH (GET_CODE (x)) - 1; i >= 0; i--)
{
if (fmt[i] == 'E')
{
int j;
for (j = XVECLEN (x, i) - 1; j >= 0; j--)
if (symbol_mentioned_p (XVECEXP (x, i, j)))
return 1;
}
else if (fmt[i] == 'e' && symbol_mentioned_p (XEXP (x, i)))
return 1;
}
return 0;
}
/* Return TRUE if X references a LABEL_REF. */
int
label_mentioned_p (rtx x)
{
const char * fmt;
int i;
if (GET_CODE (x) == LABEL_REF)
return 1;
/* UNSPEC entries for a symbol include a LABEL_REF for the referencing
instruction, but they are constant offsets, not symbols. */
if (GET_CODE (x) == UNSPEC)
return 0;
fmt = GET_RTX_FORMAT (GET_CODE (x));
for (i = GET_RTX_LENGTH (GET_CODE (x)) - 1; i >= 0; i--)
{
if (fmt[i] == 'E')
{
int j;
for (j = XVECLEN (x, i) - 1; j >= 0; j--)
if (label_mentioned_p (XVECEXP (x, i, j)))
return 1;
}
else if (fmt[i] == 'e' && label_mentioned_p (XEXP (x, i)))
return 1;
}
return 0;
}
int
tls_mentioned_p (rtx x)
{
switch (GET_CODE (x))
{
case CONST:
return tls_mentioned_p (XEXP (x, 0));
case UNSPEC:
if (XINT (x, 1) == UNSPEC_TLS)
return 1;
default:
return 0;
}
}
static rtx
load_tls_operand (rtx x, rtx reg)
{
rtx tmp;
if (reg == NULL_RTX)
reg = gen_reg_rtx (Pmode);
tmp = gen_rtx_CONST (Pmode, x);
emit_insn (gen_rtx_SET (VOIDmode, reg,
gen_rtx_PLUS (Pmode, pic_offset_table_rtx, tmp)));
return reg;
}
static rtx
microblaze_call_tls_get_addr (rtx x, rtx reg, rtx *valuep, int reloc)
{
rtx insns, tls_entry;
df_set_regs_ever_live (PIC_OFFSET_TABLE_REGNUM, true);
start_sequence ();
tls_entry = gen_rtx_UNSPEC (Pmode, gen_rtvec (2, x, GEN_INT (reloc)),
UNSPEC_TLS);
reg = load_tls_operand (tls_entry, reg);
*valuep = emit_library_call_value (get_tls_get_addr (), NULL_RTX,
LCT_PURE, /* LCT_CONST? */
Pmode, 1, reg, Pmode);
insns = get_insns ();
end_sequence ();
return insns;
}
rtx
microblaze_legitimize_tls_address(rtx x, rtx reg)
{
rtx dest, insns, ret, eqv, addend;
enum tls_model model;
model = SYMBOL_REF_TLS_MODEL (x);
switch (model)
{
case TLS_MODEL_LOCAL_DYNAMIC:
case TLS_MODEL_GLOBAL_DYNAMIC:
case TLS_MODEL_INITIAL_EXEC:
insns = microblaze_call_tls_get_addr (x, reg, &ret, TLS_GD);
dest = gen_reg_rtx (Pmode);
emit_libcall_block (insns, dest, ret, x);
break;
case TLS_MODEL_LOCAL_EXEC:
insns = microblaze_call_tls_get_addr (x, reg, &ret, TLS_LDM);
/* Attach a unique REG_EQUIV, to allow the RTL optimizers to
share the LDM result with other LD model accesses. */
eqv = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, const1_rtx), UNSPEC_TLS);
dest = gen_reg_rtx (Pmode);
emit_libcall_block (insns, dest, ret, eqv);
/* Load the addend. */
addend = gen_rtx_UNSPEC (Pmode, gen_rtvec (2, x, GEN_INT (TLS_DTPREL)),
UNSPEC_TLS);
addend = force_reg (SImode, gen_rtx_CONST (SImode, addend));
dest = gen_rtx_PLUS (Pmode, dest, addend);
break;
default:
gcc_unreachable ();
}
return dest;
}
static bool
microblaze_classify_unspec (struct microblaze_address_info *info, rtx x)
{
@ -401,6 +639,11 @@ microblaze_classify_unspec (struct microblaze_address_info *info, rtx x)
{
info->type = ADDRESS_PLT;
}
else if (XINT (x, 1) == UNSPEC_TLS)
{
info->type = ADDRESS_TLS;
info->tls_type = tls_reloc INTVAL(XVECEXP(x, 0, 1));
}
else
{
return false;
@ -431,7 +674,12 @@ static int
get_base_reg (rtx x)
{
tree decl;
int base_reg = (flag_pic ? MB_ABI_PIC_ADDR_REGNUM : MB_ABI_BASE_REGNUM);
int base_reg;
if (!flag_pic || microblaze_tls_symbol_p(x))
base_reg = MB_ABI_BASE_REGNUM;
else if (flag_pic)
base_reg = MB_ABI_PIC_ADDR_REGNUM;
if (TARGET_XLGPOPT
&& GET_CODE (x) == SYMBOL_REF
@ -509,28 +757,61 @@ microblaze_classify_address (struct microblaze_address_info *info, rtx x,
}
else if (GET_CODE (xplus1) == UNSPEC)
{
/* Need offsettable address. */
if (GET_MODE_SIZE (mode) > UNITS_PER_WORD)
return false;
return microblaze_classify_unspec (info, xplus1);
}
else if ((GET_CODE (xplus1) == SYMBOL_REF ||
GET_CODE (xplus1) == LABEL_REF) && flag_pic == 2)
GET_CODE (xplus1) == LABEL_REF))
{
return false;
}
else if (GET_CODE (xplus1) == SYMBOL_REF ||
GET_CODE (xplus1) == LABEL_REF ||
GET_CODE (xplus1) == CONST)
{
if (GET_CODE (XEXP (xplus1, 0)) == UNSPEC)
return microblaze_classify_unspec (info, XEXP (xplus1, 0));
else if (flag_pic == 2)
{
return false;
}
if (flag_pic == 2 || microblaze_tls_symbol_p(xplus1))
return false;
info->type = ADDRESS_SYMBOLIC;
info->symbol = xplus1;
info->symbol_type = SYMBOL_TYPE_GENERAL;
return true;
}
else if (GET_CODE (xplus1) == CONST)
{
rtx xconst0 = XEXP(xplus1, 0);
/* base + unspec. */
if (GET_CODE (xconst0) == UNSPEC)
{
/* Need offsettable address. */
if (GET_MODE_SIZE (mode) > UNITS_PER_WORD)
return false;
return microblaze_classify_unspec(info, xconst0);
}
/* for (plus x const_int) just look at x. */
if (GET_CODE (xconst0) == PLUS
&& GET_CODE (XEXP (xconst0, 1)) == CONST_INT
&& SMALL_INT (XEXP (xconst0, 1)))
{
/* This is ok as info->symbol is set to xplus1 the full
const-expression below. */
xconst0 = XEXP (xconst0, 0);
}
if (GET_CODE (xconst0) == SYMBOL_REF
|| GET_CODE (xconst0) == LABEL_REF)
{
if (flag_pic == 2 || microblaze_tls_symbol_p(xconst0))
return false;
info->type = ADDRESS_SYMBOLIC;
info->symbol = xplus1;
info->symbol_type = SYMBOL_TYPE_GENERAL;
return true;
}
/* Not base + symbol || base + UNSPEC. */
return false;
}
else if (GET_CODE (xplus1) == REG
&& microblaze_valid_index_register_p (xplus1, mode,
strict)
@ -562,13 +843,20 @@ microblaze_classify_address (struct microblaze_address_info *info, rtx x,
if (GET_CODE (x) == CONST)
{
return !(flag_pic && pic_address_needs_scratch (x));
}
else if (flag_pic == 2)
{
return false;
if (GET_CODE (XEXP (x, 0)) == UNSPEC)
{
info->regA = gen_rtx_raw_REG (mode,
get_base_reg (XVECEXP (XEXP (x,0), 0, 0)));
return microblaze_classify_unspec (info, XEXP (x, 0));
}
return !(flag_pic && pic_address_needs_scratch (x));
}
if (flag_pic == 2)
return false;
else if (microblaze_tls_symbol_p(x))
return false;
return true;
}
@ -616,11 +904,10 @@ microblaze_valid_pic_const (rtx x)
int
microblaze_legitimate_pic_operand (rtx x)
{
struct microblaze_address_info addr;
if (pic_address_needs_scratch (x))
if (flag_pic == 2 && (symbol_mentioned_p(x) || label_mentioned_p(x)))
return 0;
if (!microblaze_valid_pic_const(x))
if (microblaze_tls_referenced_p(x))
return 0;
return 1;
@ -706,7 +993,7 @@ microblaze_legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED,
return result;
}
if (code0 == REG && REG_OK_FOR_BASE_P (xplus0) && flag_pic == 2)
if (code0 == REG && REG_OK_FOR_BASE_P (xplus0))
{
if (reload_in_progress)
df_set_regs_ever_live (PIC_OFFSET_TABLE_REGNUM, true);
@ -717,26 +1004,58 @@ microblaze_legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED,
}
if (code1 == SYMBOL_REF)
{
result =
gen_rtx_UNSPEC (Pmode, gen_rtvec (1, xplus1), UNSPEC_GOTOFF);
result = gen_rtx_CONST (Pmode, result);
result = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, result);
result = gen_const_mem (Pmode, result);
result = gen_rtx_PLUS (Pmode, xplus0, result);
return result;
if (microblaze_tls_symbol_p(xplus1))
{
rtx tls_ref, reg;
reg = gen_reg_rtx (Pmode);
tls_ref = microblaze_legitimize_tls_address (xplus1,
NULL_RTX);
emit_move_insn (reg, tls_ref);
result = gen_rtx_PLUS (Pmode, xplus0, reg);
return result;
}
else if (flag_pic == 2)
{
rtx pic_ref, reg;
reg = gen_reg_rtx (Pmode);
pic_ref = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, xplus1),
UNSPEC_GOTOFF);
pic_ref = gen_rtx_CONST (Pmode, pic_ref);
pic_ref = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, pic_ref);
pic_ref = gen_const_mem (Pmode, pic_ref);
emit_move_insn (reg, pic_ref);
result = gen_rtx_PLUS (Pmode, xplus0, reg);
return result;
}
}
}
}
if (GET_CODE (xinsn) == SYMBOL_REF)
{
if (reload_in_progress)
df_set_regs_ever_live (PIC_OFFSET_TABLE_REGNUM, true);
result = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, xinsn), UNSPEC_GOTOFF);
result = gen_rtx_CONST (Pmode, result);
result = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, result);
result = gen_const_mem (Pmode, result);
return result;
rtx reg;
if (microblaze_tls_symbol_p(xinsn))
{
reg = microblaze_legitimize_tls_address (xinsn, NULL_RTX);
}
else
{
rtx pic_ref;
if (reload_in_progress)
df_set_regs_ever_live (PIC_OFFSET_TABLE_REGNUM, true);
pic_ref = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, xinsn), UNSPEC_GOTOFF);
pic_ref = gen_rtx_CONST (Pmode, pic_ref);
pic_ref = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, pic_ref);
pic_ref = gen_const_mem (Pmode, pic_ref);
reg = pic_ref;
}
return reg;
}
return x;
@ -1061,10 +1380,22 @@ microblaze_address_insns (rtx x, enum machine_mode mode)
else
return 2;
case ADDRESS_REG_INDEX:
case ADDRESS_SYMBOLIC:
return 1;
case ADDRESS_SYMBOLIC:
case ADDRESS_GOTOFF:
return 2;
case ADDRESS_TLS:
switch (addr.tls_type)
{
case TLS_GD:
return 2;
case TLS_LDM:
return 2;
case TLS_DTPREL:
return 1;
default :
abort();
}
default:
break;
}
@ -1088,13 +1419,18 @@ microblaze_address_cost (rtx addr, enum machine_mode mode ATTRIBUTE_UNUSED,
int
pic_address_needs_scratch (rtx x)
{
/* An address which is a symbolic plus a non SMALL_INT needs a temp reg. */
if (GET_CODE (x) == CONST && GET_CODE (XEXP (x, 0)) == PLUS
&& GET_CODE (XEXP (XEXP (x, 0), 0)) == SYMBOL_REF
&& GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT
&& (flag_pic == 2 || !SMALL_INT (XEXP (XEXP (x, 0), 1))))
return 1;
if (GET_CODE (x) == CONST && GET_CODE (XEXP (x,0)) == PLUS)
{
rtx p0, p1;
p0 = XEXP (XEXP (x, 0), 0);
p1 = XEXP (XEXP (x, 0), 1);
if ((GET_CODE (p0) == SYMBOL_REF || GET_CODE (p0) == LABEL_REF)
&& (GET_CODE (p1) == CONST_INT)
&& (flag_pic == 2 || microblaze_tls_symbol_p (p0) || !SMALL_INT (p1)))
return 1;
}
return 0;
}
@ -1918,6 +2254,7 @@ print_operand (FILE * file, rtx op, int letter)
case ADDRESS_CONST_INT:
case ADDRESS_SYMBOLIC:
case ADDRESS_GOTOFF:
case ADDRESS_TLS:
fputs ("i", file);
break;
case ADDRESS_REG_INDEX:
@ -2034,10 +2371,19 @@ print_operand (FILE * file, rtx op, int letter)
else if (letter == 't')
fputs (code == EQ ? "t" : "f", file);
else if (code == CONST && GET_CODE (XEXP (op, 0)) == REG)
else if (code == CONST
&& ((GET_CODE (XEXP (op, 0)) == REG)
|| (GET_CODE (XEXP (op, 0)) == UNSPEC)))
{
print_operand (file, XEXP (op, 0), letter);
}
else if (code == CONST
&& (GET_CODE (XEXP (op, 0)) == PLUS)
&& (GET_CODE (XEXP (XEXP (op, 0), 0)) == REG)
&& (GET_CODE (XEXP (XEXP (op, 0), 1)) == CONST))
{
print_operand_address (file, XEXP (op, 0));
}
else if (letter == 'm')
fprintf (file, HOST_WIDE_INT_PRINT_DEC, (1L << INTVAL (op)));
else
@ -2098,6 +2444,7 @@ print_operand_address (FILE * file, rtx addr)
case ADDRESS_SYMBOLIC:
case ADDRESS_GOTOFF:
case ADDRESS_PLT:
case ADDRESS_TLS:
if (info.regA)
fprintf (file, "%s,", reg_names[REGNO (info.regA)]);
output_addr_const (file, info.symbol);
@ -2109,6 +2456,24 @@ print_operand_address (FILE * file, rtx addr)
{
fputs ("@PLT", file);
}
else if (type == ADDRESS_TLS)
{
switch (info.tls_type)
{
case TLS_GD:
fputs ("@TLSGD", file);
break;
case TLS_LDM:
fputs ("@TLSLDM", file);
break;
case TLS_DTPREL:
fputs ("@TLSDTPREL", file);
break;
default :
abort();
break;
}
}
break;
case ADDRESS_INVALID:
fatal_insn ("invalid address", addr);
@ -2471,7 +2836,8 @@ microblaze_expand_prologue (void)
}
}
if (flag_pic == 2 && df_regs_ever_live_p (MB_ABI_PIC_ADDR_REGNUM))
if ((flag_pic == 2 || TLS_NEEDS_GOT )
&& df_regs_ever_live_p (MB_ABI_PIC_ADDR_REGNUM))
{
SET_REGNO (pic_offset_table_rtx, MB_ABI_PIC_ADDR_REGNUM);
emit_insn (gen_set_got (pic_offset_table_rtx)); /* setting GOT. */
@ -2701,82 +3067,61 @@ expand_pic_symbol_ref (enum machine_mode mode ATTRIBUTE_UNUSED, rtx op)
bool
microblaze_expand_move (enum machine_mode mode, rtx operands[])
{
rtx op0, op1;
op0 = operands[0];
op1 = operands[1];
if (!register_operand (op0, SImode)
&& !register_operand (op1, SImode)
&& (GET_CODE (op1) != CONST_INT || INTVAL (op1) != 0))
{
rtx temp = force_reg (SImode, op1);
emit_move_insn (op0, temp);
return true;
}
/* If operands[1] is a constant address invalid for pic, then we need to
handle it just like LEGITIMIZE_ADDRESS does. */
if (flag_pic)
if (GET_CODE (op1) == SYMBOL_REF || GET_CODE (op1) == LABEL_REF)
{
if (GET_CODE (operands[0]) == MEM)
rtx result;
if (microblaze_tls_symbol_p(op1))
{
rtx addr = XEXP (operands[0], 0);
if (GET_CODE (addr) == SYMBOL_REF)
{
rtx ptr_reg, result;
if (reload_in_progress)
df_set_regs_ever_live (PIC_OFFSET_TABLE_REGNUM, true);
addr = expand_pic_symbol_ref (mode, addr);
ptr_reg = gen_reg_rtx (Pmode);
emit_move_insn (ptr_reg, addr);
result = gen_rtx_MEM (mode, ptr_reg);
operands[0] = result;
}
}
if (GET_CODE (operands[1]) == SYMBOL_REF
|| GET_CODE (operands[1]) == LABEL_REF)
{
rtx result;
if (reload_in_progress)
df_set_regs_ever_live (PIC_OFFSET_TABLE_REGNUM, true);
result = expand_pic_symbol_ref (mode, operands[1]);
if (GET_CODE (operands[0]) != REG)
{
rtx ptr_reg = gen_reg_rtx (Pmode);
emit_move_insn (ptr_reg, result);
emit_move_insn (operands[0], ptr_reg);
}
else
{
emit_move_insn (operands[0], result);
}
result = microblaze_legitimize_tls_address (op1, NULL_RTX);
emit_move_insn (op0, result);
return true;
}
else if (GET_CODE (operands[1]) == MEM &&
GET_CODE (XEXP (operands[1], 0)) == SYMBOL_REF)
else if (flag_pic)
{
rtx result;
rtx ptr_reg;
if (reload_in_progress)
df_set_regs_ever_live (PIC_OFFSET_TABLE_REGNUM, true);
result = expand_pic_symbol_ref (mode, XEXP (operands[1], 0));
ptr_reg = gen_reg_rtx (Pmode);
emit_move_insn (ptr_reg, result);
result = gen_rtx_MEM (mode, ptr_reg);
emit_move_insn (operands[0], result);
return true;
}
else if (pic_address_needs_scratch (operands[1]))
{
rtx temp = force_reg (SImode, XEXP (XEXP (operands[1], 0), 0));
rtx temp2 = XEXP (XEXP (operands[1], 0), 1);
if (reload_in_progress)
df_set_regs_ever_live (PIC_OFFSET_TABLE_REGNUM, true);
emit_move_insn (operands[0], gen_rtx_PLUS (SImode, temp, temp2));
result = expand_pic_symbol_ref (mode, op1);
emit_move_insn (op0, result);
return true;
}
}
if ((reload_in_progress | reload_completed) == 0
&& !register_operand (operands[0], SImode)
&& !register_operand (operands[1], SImode)
&& (GET_CODE (operands[1]) != CONST_INT || INTVAL (operands[1]) != 0))
/* Handle Case of (const (plus symbol const_int)). */
if (GET_CODE (op1) == CONST && GET_CODE (XEXP (op1,0)) == PLUS)
{
rtx temp = force_reg (SImode, operands[1]);
emit_move_insn (operands[0], temp);
return true;
rtx p0, p1;
p0 = XEXP (XEXP (op1, 0), 0);
p1 = XEXP (XEXP (op1, 0), 1);
if ((GET_CODE (p1) == CONST_INT)
&& ((GET_CODE (p0) == UNSPEC)
|| ((GET_CODE (p0) == SYMBOL_REF || GET_CODE (p0) == LABEL_REF)
&& (flag_pic == 2 || microblaze_tls_symbol_p (p0)
|| !SMALL_INT (p1)))))
{
rtx temp = force_reg (SImode, p0);
rtx temp2 = p1;
if (flag_pic && reload_in_progress)
df_set_regs_ever_live (PIC_OFFSET_TABLE_REGNUM, true);
emit_move_insn (op0, gen_rtx_PLUS (SImode, temp, temp2));
return true;
}
}
return false;
}
@ -3048,10 +3393,40 @@ microblaze_adjust_cost (rtx insn ATTRIBUTE_UNUSED, rtx link,
At present, GAS doesn't understand li.[sd], so don't allow it
to be generated at present. */
static bool
microblaze_legitimate_constant_p (enum machine_mode mode, rtx x)
microblaze_legitimate_constant_p (enum machine_mode mode ATTRIBUTE_UNUSED, rtx x)
{
return GET_CODE (x) != CONST_DOUBLE || microblaze_const_double_ok (x, mode);
if (microblaze_cannot_force_const_mem(mode, x))
return false;
if (GET_CODE (x) == CONST_DOUBLE)
{
return microblaze_const_double_ok (x, GET_MODE (x));
}
/* Handle Case of (const (plus unspec const_int)). */
if (GET_CODE (x) == CONST && GET_CODE (XEXP (x,0)) == PLUS)
{
rtx p0, p1;
p0 = XEXP (XEXP (x, 0), 0);
p1 = XEXP (XEXP (x, 0), 1);
if (GET_CODE(p1) == CONST_INT)
{
/* Const offset from UNSPEC is not supported. */
if ((GET_CODE (p0) == UNSPEC))
return false;
if ((GET_CODE (p0) == SYMBOL_REF || GET_CODE (p0) == LABEL_REF)
&& (microblaze_tls_symbol_p (p0) || !SMALL_INT (p1)))
return false;
}
}
return true;
}
#undef TARGET_ENCODE_SECTION_INFO
#define TARGET_ENCODE_SECTION_INFO microblaze_encode_section_info
@ -3068,6 +3443,9 @@ microblaze_legitimate_constant_p (enum machine_mode mode, rtx x)
#undef TARGET_RTX_COSTS
#define TARGET_RTX_COSTS microblaze_rtx_costs
#undef TARGET_CANNOT_FORCE_CONST_MEM
#define TARGET_CANNOT_FORCE_CONST_MEM microblaze_cannot_force_const_mem
#undef TARGET_ADDRESS_COST
#define TARGET_ADDRESS_COST microblaze_address_cost

7
gcc/config/microblaze/microblaze.h
View File

@ -65,6 +65,9 @@ extern enum pipeline_type microblaze_pipe;
/* The default is to support PIC. */
#define TARGET_SUPPORTS_PIC 1
/* The default is to not need GOT for TLS. */
#define TLS_NEEDS_GOT 0
/* What is the default setting for -mcpu= . We set it to v4.00.a even though
we are actually ahead. This is safest version that has generate code
compatible for the original ISA */
@ -326,9 +329,7 @@ extern char microblaze_hard_regno_mode_ok[][FIRST_PSEUDO_REGISTER];
#define NO_FUNCTION_CSE 1
#define PIC_OFFSET_TABLE_REGNUM \
(flag_pic ? (GP_REG_FIRST + MB_ABI_PIC_ADDR_REGNUM) : \
INVALID_REGNUM)
#define PIC_OFFSET_TABLE_REGNUM (GP_REG_FIRST + MB_ABI_PIC_ADDR_REGNUM)
enum reg_class
{

19
gcc/config/microblaze/microblaze.md
View File

@ -40,6 +40,7 @@
(UNSPEC_PLT 103) ;; jump table
(UNSPEC_CMP 104) ;; signed compare
(UNSPEC_CMPU 105) ;; unsigned compare
(UNSPEC_TLS 106) ;; jump table
])
@ -459,7 +460,7 @@
(define_insn "addsi3"
[(set (match_operand:SI 0 "register_operand" "=d,d,d")
(plus:SI (match_operand:SI 1 "reg_or_0_operand" "%dJ,dJ,dJ")
(match_operand:SI 2 "arith_operand" "d,I,i")))]
(match_operand:SI 2 "arith_plus_operand" "d,I,i")))]
""
"@
addk\t%0,%z1,%2
@ -892,8 +893,8 @@
(define_insn "*movdi_internal"
[(set (match_operand:DI 0 "nonimmediate_operand" "=d,d,d,d,d,R,m")
(match_operand:DI 1 "general_operand" " d,i,J,R,m,d,d"))]
[(set (match_operand:DI 0 "nonimmediate_operand" "=d,d,d,d,d,R,o")
(match_operand:DI 1 "general_operand" " d,i,J,R,o,d,d"))]
""
{
switch (which_alternative)
@ -999,13 +1000,9 @@
(set_attr "length" "4")])
(define_insn "*movsi_internal2"
[(set (match_operand:SI 0 "nonimmediate_operand" "=d,d,d, d,d,R, T")
(match_operand:SI 1 "move_operand" " d,I,Mnis,R,m,dJ,dJ"))]
"(register_operand (operands[0], SImode)
|| register_operand (operands[1], SImode)
|| (GET_CODE (operands[1]) == CONST_INT && INTVAL (operands[1]) == 0))
&& (flag_pic != 2 || (GET_CODE (operands[1]) != SYMBOL_REF
&& GET_CODE (operands[1]) != LABEL_REF))"
[(set (match_operand:SI 0 "nonimmediate_operand" "=d,d,d, d,d,R,m")
(match_operand:SI 1 "move_src_operand" " d,I,Mnis,R,m,dJ,dJ"))]
""
"@
addk\t%0,%1,r0
addik\t%0,r0,%1\t# %X1
@ -1196,7 +1193,7 @@
;; Applies to both TARGET_SOFT_FLOAT and TARGET_HARD_FLOAT
;;
(define_insn "*movdf_internal"
[(set (match_operand:DF 0 "nonimmediate_operand" "=d,d,d,d,To")
[(set (match_operand:DF 0 "nonimmediate_operand" "=d,d,d,d,o")
(match_operand:DF 1 "general_operand" "dG,o,F,T,d"))]
""
{

57
gcc/config/microblaze/predicates.md
View File

@ -30,6 +30,52 @@
(and (match_code "const_int,const_double")
(match_test "LARGE_INT (op)"))))
(define_predicate "arith_plus_operand"
(match_operand 0 "general_operand")
{
switch (GET_CODE (op))
{
default:
return 0;
case CONST_INT:
case REG:
return 1;
case SYMBOL_REF:
case LABEL_REF:
if (flag_pic || microblaze_tls_referenced_p(op))
return 0;
return 1;
case CONST:
{
rtx const0;
const0 = XEXP (op, 0);
switch (GET_CODE(const0))
{
default:
return 0;
case UNSPEC :
return 1;
case PLUS :
{
rtx p0, p1;
p0 = XEXP (const0, 0);
p1 = XEXP (const0, 1);
if ((GET_CODE(p0) == SYMBOL_REF
|| GET_CODE (p0) == LABEL_REF)
&& GET_CODE(p1) == CONST_INT)
{
return arith_plus_operand (p0, GET_MODE(p0));
}
}
}
}
}
return 0;
})
(define_predicate "const_0_operand"
(and (match_code "const_int,const_double")
(match_test "op == CONST0_RTX (GET_MODE (op))")))
@ -54,14 +100,21 @@
(match_test "GET_CODE (op) == REG || GET_CODE (op) == SYMBOL_REF || GET_CODE (op) == CONST_INT")))
;; Return if OPERAND is valid as a source operand for a move instruction.
(define_predicate "move_operand"
(define_predicate "move_src_operand"
(and (
not (
and (match_code "plus")
(not (match_test "(GET_CODE (XEXP (op, 0)) == REG) ^ (GET_CODE (XEXP (op,1)) == REG)"))
)
)
(match_operand 0 "general_operand")))
(match_operand 0 "general_operand"))
{
if (microblaze_tls_referenced_p(op)
|| (flag_pic && (symbol_mentioned_p(op) || label_mentioned_p(op))))
return false;
return true;
})
;; Test for valid PIC call operand
(define_predicate "call_insn_plt_operand"

12
gcc/configure vendored
View File

@ -23205,6 +23205,18 @@ foo: data8 25
tls_first_minor=13
tls_as_opt=--fatal-warnings
;;
microblaze*-*-*)
conftest_s='
.section .tdata,"awT",@progbits
x:
.word 2
.text
addik r5,r20,x@TLSGD
addik r5,r20,x@TLSLDM'
tls_first_major=2
tls_first_minor=20
tls_as_opt='--fatal-warnings'
;;
mips*-*-*)
conftest_s='
.section .tdata,"awT",@progbits

12
gcc/configure.ac
View File

@ -2968,6 +2968,18 @@ foo: data8 25
tls_first_minor=13
tls_as_opt=--fatal-warnings
;;
microblaze*-*-*)
conftest_s='
.section .tdata,"awT",@progbits
x:
.word 2
.text
addik r5,r20,x@TLSGD
addik r5,r20,x@TLSLDM'
tls_first_major=2
tls_first_minor=20
tls_as_opt='--fatal-warnings'
;;
mips*-*-*)
conftest_s='
.section .tdata,"awT",@progbits