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Commit e245bd81 by Richard Sandiford Committed by Richard Sandiford
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mips-protos.h (enum mips_symbol_type): Move from mips.h. 

	* config/mips/mips-protos.h (enum mips_symbol_type): Move from mips.h.
	(NUM_SYMBOL_TYPES): Likewise.
	(SYMBOL_64_HIGH, SYMBOL_64_MID, SYMBOL_64_LOW): New symbol types.
	(mips_unspec_address): Declare.
	(mips_gotoff_page, mips_gotoff_global): Delete.
	* config/mips/mips.h (PREDICATE_CODES): Add general_symbolic_operand.
	* config/mips/mips.c (enum mips_symbol_type, NUM_SYMBOL_TYPES): Delete.
	(mips_symbolic_constant_p, mips_symbolic_address_p)
	(mips_symbol_insns): Handle new symbol types.
	(general_symbolic_operand): New predicate.
	(mips_unspec_address): Make extern.
	(mips_gotoff_page, mips_gotoff_global): Delete.
	(override_options): Allow -mabi=64 -mno-abicalls -mexplicit-relocs.
	Handle new symbol types.
	* config/mips/mips.md (*lea_high64, *lea64): New patterns.
	(*xgot_hi[sd]i, *xgot_lo[sd]i, *got_disp[sd]i, *got_disp[sd]i): Call
	mips_unspec_address directly.
	* doc/invoke.texi: Remove the -mabi=64 -mno-abicalls exception from
	the documentation of -mexplicit-relocs.

From-SVN: r78718
parent d0fe5ad3
Showing with 204 additions and 100 deletions
gcc/ChangeLog
2004-03-01 Richard Sandiford <rsandifo@redhat.com>
* config/mips/mips-protos.h (enum mips_symbol_type): Move from mips.h.
(NUM_SYMBOL_TYPES): Likewise.
(SYMBOL_64_HIGH, SYMBOL_64_MID, SYMBOL_64_LOW): New symbol types.
(mips_unspec_address): Declare.
(mips_gotoff_page, mips_gotoff_global): Delete.
* config/mips/mips.h (PREDICATE_CODES): Add general_symbolic_operand.
* config/mips/mips.c (enum mips_symbol_type, NUM_SYMBOL_TYPES): Delete.
(mips_symbolic_constant_p, mips_symbolic_address_p)
(mips_symbol_insns): Handle new symbol types.
(general_symbolic_operand): New predicate.
(mips_unspec_address): Make extern.
(mips_gotoff_page, mips_gotoff_global): Delete.
(override_options): Allow -mabi=64 -mno-abicalls -mexplicit-relocs.
Handle new symbol types.
* config/mips/mips.md (*lea_high64, *lea64): New patterns.
(*xgot_hi[sd]i, *xgot_lo[sd]i, *got_disp[sd]i, *got_disp[sd]i): Call
mips_unspec_address directly.
* doc/invoke.texi: Remove the -mabi=64 -mno-abicalls exception from
the documentation of -mexplicit-relocs.
2004-03-01 Jeff Law <law@redhat.com> 2004-03-01 Jeff Law <law@redhat.com>
* fold-const.c (fold): An equality comparison of a non-weak object * fold-const.c (fold): An equality comparison of a non-weak object
......
gcc/config/mips/mips-protos.h
...@@ -26,15 +26,76 @@ Boston, MA 02111-1307, USA. */ ...@@ -26,15 +26,76 @@ Boston, MA 02111-1307, USA. */
#ifndef GCC_MIPS_PROTOS_H #ifndef GCC_MIPS_PROTOS_H
#define GCC_MIPS_PROTOS_H #define GCC_MIPS_PROTOS_H
/* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address.
SYMBOL_GENERAL
Used when none of the below apply.
SYMBOL_SMALL_DATA
The symbol refers to something in a small data section.
SYMBOL_CONSTANT_POOL
The symbol refers to something in the mips16 constant pool.
SYMBOL_GOT_LOCAL
The symbol refers to local data that will be found using
the global offset table.
SYMBOL_GOT_GLOBAL
Likewise non-local data.
SYMBOL_GOTOFF_PAGE
An UNSPEC wrapper around a SYMBOL_GOT_LOCAL. It represents the
offset from _gp of a GOT page entry.
SYMBOL_GOTOFF_GLOBAL
An UNSPEC wrapper around a SYMBOL_GOT_GLOBAL. It represents the
the offset from _gp of the symbol's GOT entry.
SYMBOL_GOTOFF_CALL
Like SYMBOL_GOTOFF_GLOBAL, but used when calling a global function.
The GOT entry is allowed to point to a stub rather than to the
function itself.
SYMBOL_GOTOFF_LOADGP
An UNSPEC wrapper around a function's address. It represents the
offset of _gp from the start of the function.
SYMBOL_64_HIGH
For a 64-bit symbolic address X, this is the value of
(%highest(X) << 16) + %higher(X).
SYMBOL_64_MID
For a 64-bit symbolic address X, this is the value of
(%higher(X) << 16) + %hi(X).
SYMBOL_64_LOW
For a 64-bit symbolic address X, this is the value of
(%hi(X) << 16) + %lo(X). */
enum mips_symbol_type {
SYMBOL_GENERAL,
SYMBOL_SMALL_DATA,
SYMBOL_CONSTANT_POOL,
SYMBOL_GOT_LOCAL,
SYMBOL_GOT_GLOBAL,
SYMBOL_GOTOFF_PAGE,
SYMBOL_GOTOFF_GLOBAL,
SYMBOL_GOTOFF_CALL,
SYMBOL_GOTOFF_LOADGP,
SYMBOL_64_HIGH,
SYMBOL_64_MID,
SYMBOL_64_LOW
};
#define NUM_SYMBOL_TYPES (SYMBOL_64_LOW + 1)
extern int mips_regno_mode_ok_for_base_p (int, enum machine_mode, int); extern int mips_regno_mode_ok_for_base_p (int, enum machine_mode, int);
extern int mips_address_insns (rtx, enum machine_mode); extern int mips_address_insns (rtx, enum machine_mode);
extern int mips_const_insns (rtx); extern int mips_const_insns (rtx);
extern int mips_fetch_insns (rtx); extern int mips_fetch_insns (rtx);
extern int mips_idiv_insns (void); extern int mips_idiv_insns (void);
extern bool mips_legitimate_address_p (enum machine_mode, rtx, int); extern bool mips_legitimate_address_p (enum machine_mode, rtx, int);
extern rtx mips_unspec_address (rtx, enum mips_symbol_type);
extern bool mips_legitimize_address (rtx *, enum machine_mode); extern bool mips_legitimize_address (rtx *, enum machine_mode);
extern rtx mips_gotoff_page (rtx);
extern rtx mips_gotoff_global (rtx);
extern bool mips_legitimize_move (enum machine_mode, rtx, rtx); extern bool mips_legitimize_move (enum machine_mode, rtx, rtx);
extern int m16_uimm3_b (rtx, enum machine_mode); extern int m16_uimm3_b (rtx, enum machine_mode);
......
gcc/config/mips/mips.c
...@@ -105,53 +105,6 @@ enum internal_test { ...@@ -105,53 +105,6 @@ enum internal_test {
multi-instruction addu sequence. Use 0x7fe0 to work around this. */ multi-instruction addu sequence. Use 0x7fe0 to work around this. */
#define MIPS_MAX_FIRST_STACK_STEP (TARGET_MIPS16 ? 0x100 : 0x7fe0) #define MIPS_MAX_FIRST_STACK_STEP (TARGET_MIPS16 ? 0x100 : 0x7fe0)
/* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address.
SYMBOL_GENERAL
Used when none of the below apply.
SYMBOL_SMALL_DATA
The symbol refers to something in a small data section.
SYMBOL_CONSTANT_POOL
The symbol refers to something in the mips16 constant pool.
SYMBOL_GOT_LOCAL
The symbol refers to local data that will be found using
the global offset table.
SYMBOL_GOT_GLOBAL
Likewise non-local data.
SYMBOL_GOTOFF_PAGE
An UNSPEC wrapper around a SYMBOL_GOT_LOCAL. It represents the
offset from _gp of a GOT page entry.
SYMBOL_GOTOFF_GLOBAL
An UNSPEC wrapper around a SYMBOL_GOT_GLOBAL. It represents the
the offset from _gp of the symbol's GOT entry.
SYMBOL_GOTOFF_CALL
Like SYMBOL_GOTOFF_GLOBAL, but used when calling a global function.
The GOT entry is allowed to point to a stub rather than to the
function itself.
SYMBOL_GOTOFF_LOADGP
An UNSPEC wrapper around a function's address. It represents the
offset of _gp from the start of the function. */
enum mips_symbol_type {
SYMBOL_GENERAL,
SYMBOL_SMALL_DATA,
SYMBOL_CONSTANT_POOL,
SYMBOL_GOT_LOCAL,
SYMBOL_GOT_GLOBAL,
SYMBOL_GOTOFF_PAGE,
SYMBOL_GOTOFF_GLOBAL,
SYMBOL_GOTOFF_CALL,
SYMBOL_GOTOFF_LOADGP
};
#define NUM_SYMBOL_TYPES (SYMBOL_GOTOFF_LOADGP + 1)
/* Classifies an address. /* Classifies an address.
...@@ -196,7 +149,6 @@ static int mips_symbol_insns (enum mips_symbol_type); ...@@ -196,7 +149,6 @@ static int mips_symbol_insns (enum mips_symbol_type);
static bool mips16_unextended_reference_p (enum machine_mode mode, rtx, rtx); static bool mips16_unextended_reference_p (enum machine_mode mode, rtx, rtx);
static rtx mips_force_temporary (rtx, rtx); static rtx mips_force_temporary (rtx, rtx);
static rtx mips_split_symbol (rtx, rtx); static rtx mips_split_symbol (rtx, rtx);
static rtx mips_unspec_address (rtx, enum mips_symbol_type);
static rtx mips_unspec_offset_high (rtx, rtx, rtx, enum mips_symbol_type); static rtx mips_unspec_offset_high (rtx, rtx, rtx, enum mips_symbol_type);
static rtx mips_add_offset (rtx, HOST_WIDE_INT); static rtx mips_add_offset (rtx, HOST_WIDE_INT);
static unsigned int mips_build_shift (struct mips_integer_op *, HOST_WIDE_INT); static unsigned int mips_build_shift (struct mips_integer_op *, HOST_WIDE_INT);
...@@ -951,6 +903,9 @@ mips_symbolic_constant_p (rtx x, enum mips_symbol_type *symbol_type) ...@@ -951,6 +903,9 @@ mips_symbolic_constant_p (rtx x, enum mips_symbol_type *symbol_type)
switch (*symbol_type) switch (*symbol_type)
{ {
case SYMBOL_GENERAL: case SYMBOL_GENERAL:
case SYMBOL_64_HIGH:
case SYMBOL_64_MID:
case SYMBOL_64_LOW:
/* If the target has 64-bit pointers and the object file only /* If the target has 64-bit pointers and the object file only
supports 32-bit symbols, the values of those symbols will be supports 32-bit symbols, the values of those symbols will be
sign-extended. In this case we can't allow an arbitrary offset sign-extended. In this case we can't allow an arbitrary offset
...@@ -1068,6 +1023,9 @@ mips_symbolic_address_p (enum mips_symbol_type symbol_type, ...@@ -1068,6 +1023,9 @@ mips_symbolic_address_p (enum mips_symbol_type symbol_type,
case SYMBOL_GOTOFF_GLOBAL: case SYMBOL_GOTOFF_GLOBAL:
case SYMBOL_GOTOFF_CALL: case SYMBOL_GOTOFF_CALL:
case SYMBOL_GOTOFF_LOADGP: case SYMBOL_GOTOFF_LOADGP:
case SYMBOL_64_HIGH:
case SYMBOL_64_MID:
case SYMBOL_64_LOW:
return true; return true;
} }
abort (); abort ();
...@@ -1191,6 +1149,9 @@ mips_symbol_insns (enum mips_symbol_type type) ...@@ -1191,6 +1149,9 @@ mips_symbol_insns (enum mips_symbol_type type)
case SYMBOL_GOTOFF_GLOBAL: case SYMBOL_GOTOFF_GLOBAL:
case SYMBOL_GOTOFF_CALL: case SYMBOL_GOTOFF_CALL:
case SYMBOL_GOTOFF_LOADGP: case SYMBOL_GOTOFF_LOADGP:
case SYMBOL_64_HIGH:
case SYMBOL_64_MID:
case SYMBOL_64_LOW:
/* Check whether the offset is a 16- or 32-bit value. */ /* Check whether the offset is a 16- or 32-bit value. */
return mips_split_p[type] ? 2 : 1; return mips_split_p[type] ? 2 : 1;
} }
...@@ -1637,6 +1598,19 @@ symbolic_operand (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED) ...@@ -1637,6 +1598,19 @@ symbolic_operand (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED)
} }
/* Return true if OP is a symbolic constant of type SYMBOL_GENERAL. */
int
general_symbolic_operand (rtx op, enum machine_mode mode)
{
enum mips_symbol_type symbol_type;
return ((mode == VOIDmode || mode == GET_MODE (op))
&& mips_symbolic_constant_p (op, &symbol_type)
&& symbol_type == SYMBOL_GENERAL);
}
/* Return true if we're generating PIC and OP is a global symbol. */ /* Return true if we're generating PIC and OP is a global symbol. */
int int
...@@ -1728,7 +1702,7 @@ mips_split_symbol (rtx temp, rtx addr) ...@@ -1728,7 +1702,7 @@ mips_split_symbol (rtx temp, rtx addr)
/* Return an UNSPEC address with underlying address ADDRESS and symbol /* Return an UNSPEC address with underlying address ADDRESS and symbol
type SYMBOL_TYPE. */ type SYMBOL_TYPE. */
static rtx rtx
mips_unspec_address (rtx address, enum mips_symbol_type symbol_type) mips_unspec_address (rtx address, enum mips_symbol_type symbol_type)
{ {
rtx base; rtx base;
...@@ -1761,25 +1735,6 @@ mips_unspec_offset_high (rtx temp, rtx base, rtx addr, ...@@ -1761,25 +1735,6 @@ mips_unspec_offset_high (rtx temp, rtx base, rtx addr,
} }
/* Return the offset of a GOT page entry for local address ADDR. */
rtx
mips_gotoff_page (rtx addr)
{
return mips_unspec_address (addr, SYMBOL_GOTOFF_PAGE);
}
/* Return the offset of ADDR's GOT entry from _gp. ADDR is a
global_got_operand. */
rtx
mips_gotoff_global (rtx addr)
{
return mips_unspec_address (addr, SYMBOL_GOTOFF_GLOBAL);
}
/* Return a legitimate address for REG + OFFSET. This function will /* Return a legitimate address for REG + OFFSET. This function will
create a temporary register if OFFSET is not a SMALL_OPERAND. */ create a temporary register if OFFSET is not a SMALL_OPERAND. */
...@@ -4861,15 +4816,6 @@ override_options (void) ...@@ -4861,15 +4816,6 @@ override_options (void)
else else
mips_split_addresses = 0; mips_split_addresses = 0;
/* -mexplicit-relocs doesn't yet support non-PIC n64. We don't know
how to generate %highest/%higher/%hi/%lo sequences. */
if (mips_abi == ABI_64 && !TARGET_ABICALLS)
{
if ((target_flags_explicit & target_flags & MASK_EXPLICIT_RELOCS) != 0)
sorry ("non-PIC n64 with explicit relocations");
target_flags &= ~MASK_EXPLICIT_RELOCS;
}
/* Explicit relocations for "old" ABIs are a GNU extension. Unless /* Explicit relocations for "old" ABIs are a GNU extension. Unless
the user has said otherwise, assume that they are not available the user has said otherwise, assume that they are not available
with assemblers other than gas. */ with assemblers other than gas. */
...@@ -5065,12 +5011,35 @@ override_options (void) ...@@ -5065,12 +5011,35 @@ override_options (void)
/* Function to allocate machine-dependent function status. */ /* Function to allocate machine-dependent function status. */
init_machine_status = &mips_init_machine_status; init_machine_status = &mips_init_machine_status;
if (ABI_HAS_64BIT_SYMBOLS)
{
if (TARGET_EXPLICIT_RELOCS)
{
mips_split_p[SYMBOL_64_HIGH] = true;
mips_hi_relocs[SYMBOL_64_HIGH] = "%highest(";
mips_lo_relocs[SYMBOL_64_HIGH] = "%higher(";
mips_split_p[SYMBOL_64_MID] = true;
mips_hi_relocs[SYMBOL_64_MID] = "%higher(";
mips_lo_relocs[SYMBOL_64_MID] = "%hi(";
mips_split_p[SYMBOL_64_LOW] = true;
mips_hi_relocs[SYMBOL_64_LOW] = "%hi(";
mips_lo_relocs[SYMBOL_64_LOW] = "%lo(";
mips_split_p[SYMBOL_GENERAL] = true;
mips_lo_relocs[SYMBOL_GENERAL] = "%lo(";
}
}
else
{
if (TARGET_EXPLICIT_RELOCS || mips_split_addresses) if (TARGET_EXPLICIT_RELOCS || mips_split_addresses)
{ {
mips_split_p[SYMBOL_GENERAL] = true; mips_split_p[SYMBOL_GENERAL] = true;
mips_hi_relocs[SYMBOL_GENERAL] = "%hi("; mips_hi_relocs[SYMBOL_GENERAL] = "%hi(";
mips_lo_relocs[SYMBOL_GENERAL] = "%lo("; mips_lo_relocs[SYMBOL_GENERAL] = "%lo(";
} }
}
if (TARGET_MIPS16) if (TARGET_MIPS16)
{ {
......
gcc/config/mips/mips.h
...@@ -2698,6 +2698,7 @@ typedef struct mips_args { ...@@ -2698,6 +2698,7 @@ typedef struct mips_args {
#define PREDICATE_CODES \ #define PREDICATE_CODES \
{"uns_arith_operand", { REG, CONST_INT, SUBREG, ADDRESSOF }}, \ {"uns_arith_operand", { REG, CONST_INT, SUBREG, ADDRESSOF }}, \
{"symbolic_operand", { CONST, SYMBOL_REF, LABEL_REF }}, \ {"symbolic_operand", { CONST, SYMBOL_REF, LABEL_REF }}, \
{"general_symbolic_operand", { CONST, SYMBOL_REF, LABEL_REF }}, \
{"global_got_operand", { CONST, SYMBOL_REF, LABEL_REF }}, \ {"global_got_operand", { CONST, SYMBOL_REF, LABEL_REF }}, \
{"local_got_operand", { CONST, SYMBOL_REF, LABEL_REF }}, \ {"local_got_operand", { CONST, SYMBOL_REF, LABEL_REF }}, \
{"const_arith_operand", { CONST_INT }}, \ {"const_arith_operand", { CONST_INT }}, \
......
gcc/config/mips/mips.md
...@@ -4233,6 +4233,67 @@ dsrl\t%3,%3,1\n\ ...@@ -4233,6 +4233,67 @@ dsrl\t%3,%3,1\n\
[(set_attr "type" "store") [(set_attr "type" "store")
(set_attr "mode" "DI")]) (set_attr "mode" "DI")])
;; An instruction to calculate the high part of a 64-bit SYMBOL_GENERAL.
;; The required value is:
;;
;; (%highest(op1) << 48) + (%higher(op1) << 32) + (%hi(op1) << 16)
;;
;; which translates to:
;;
;; lui op0,%highest(op1)
;; daddiu op0,op0,%higher(op1)
;; dsll op0,op0,16
;; daddiu op0,op0,%hi(op1)
;; dsll op0,op0,16
(define_insn_and_split "*lea_high64"
[(set (match_operand:DI 0 "register_operand" "=d")
(high:DI (match_operand:DI 1 "general_symbolic_operand" "")))]
"TARGET_EXPLICIT_RELOCS && ABI_HAS_64BIT_SYMBOLS"
"#"
"&& reload_completed"
[(set (match_dup 0) (high:DI (match_dup 2)))
(set (match_dup 0) (lo_sum:DI (match_dup 0) (match_dup 2)))
(set (match_dup 0) (ashift:DI (match_dup 0) (const_int 16)))
(set (match_dup 0) (lo_sum:DI (match_dup 0) (match_dup 3)))
(set (match_dup 0) (ashift:DI (match_dup 0) (const_int 16)))]
{
operands[2] = mips_unspec_address (operands[1], SYMBOL_64_HIGH);
operands[3] = mips_unspec_address (operands[1], SYMBOL_64_MID);
}
[(set_attr "length" "20")])
;; On most targets, the expansion of (lo_sum (high X) X) for a 64-bit
;; SYMBOL_GENERAL X will take 6 cycles. This next pattern allows combine
;; to merge the HIGH and LO_SUM parts of a move if the HIGH part is only
;; used once. We can then use the sequence:
;;
;; lui op0,%highest(op1)
;; lui op2,%hi(op1)
;; daddiu op0,op0,%higher(op1)
;; daddiu op2,op2,%lo(op1)
;; dsll32 op0,op0,0
;; daddu op0,op0,op2
;;
;; which takes 4 cycles on most superscalar targets.
(define_insn_and_split "*lea64"
[(set (match_operand:DI 0 "register_operand" "=d")
(match_operand:DI 1 "general_symbolic_operand" ""))
(clobber (match_scratch:DI 2 "=&d"))]
"TARGET_EXPLICIT_RELOCS && ABI_HAS_64BIT_SYMBOLS && cse_not_expected"
"#"
"&& reload_completed"
[(set (match_dup 0) (high:DI (match_dup 3)))
(set (match_dup 2) (high:DI (match_dup 4)))
(set (match_dup 0) (lo_sum:DI (match_dup 0) (match_dup 3)))
(set (match_dup 2) (lo_sum:DI (match_dup 2) (match_dup 4)))
(set (match_dup 0) (ashift:DI (match_dup 0) (const_int 32)))
(set (match_dup 0) (plus:DI (match_dup 0) (match_dup 2)))]
{
operands[3] = mips_unspec_address (operands[1], SYMBOL_64_HIGH);
operands[4] = mips_unspec_address (operands[1], SYMBOL_64_LOW);
}
[(set_attr "length" "24")])
;; Insns to fetch a global symbol from a big GOT. ;; Insns to fetch a global symbol from a big GOT.
(define_insn_and_split "*xgot_hisi" (define_insn_and_split "*xgot_hisi"
...@@ -4244,7 +4305,7 @@ dsrl\t%3,%3,1\n\ ...@@ -4244,7 +4305,7 @@ dsrl\t%3,%3,1\n\
[(set (match_dup 0) (high:SI (match_dup 2))) [(set (match_dup 0) (high:SI (match_dup 2)))
(set (match_dup 0) (plus:SI (match_dup 0) (match_dup 3)))] (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 3)))]
{ {
operands[2] = mips_gotoff_global (operands[1]); operands[2] = mips_unspec_address (operands[1], SYMBOL_GOTOFF_GLOBAL);
operands[3] = pic_offset_table_rtx; operands[3] = pic_offset_table_rtx;
} }
[(set_attr "got" "xgot_high")]) [(set_attr "got" "xgot_high")])
...@@ -4258,7 +4319,7 @@ dsrl\t%3,%3,1\n\ ...@@ -4258,7 +4319,7 @@ dsrl\t%3,%3,1\n\
"&& reload_completed" "&& reload_completed"
[(set (match_dup 0) [(set (match_dup 0)
(unspec:SI [(match_dup 1) (match_dup 3)] UNSPEC_LOAD_GOT))] (unspec:SI [(match_dup 1) (match_dup 3)] UNSPEC_LOAD_GOT))]
{ operands[3] = mips_gotoff_global (operands[2]); } { operands[3] = mips_unspec_address (operands[2], SYMBOL_GOTOFF_GLOBAL); }
[(set_attr "got" "load")]) [(set_attr "got" "load")])
(define_insn_and_split "*xgot_hidi" (define_insn_and_split "*xgot_hidi"
...@@ -4270,7 +4331,7 @@ dsrl\t%3,%3,1\n\ ...@@ -4270,7 +4331,7 @@ dsrl\t%3,%3,1\n\
[(set (match_dup 0) (high:DI (match_dup 2))) [(set (match_dup 0) (high:DI (match_dup 2)))
(set (match_dup 0) (plus:DI (match_dup 0) (match_dup 3)))] (set (match_dup 0) (plus:DI (match_dup 0) (match_dup 3)))]
{ {
operands[2] = mips_gotoff_global (operands[1]); operands[2] = mips_unspec_address (operands[1], SYMBOL_GOTOFF_GLOBAL);
operands[3] = pic_offset_table_rtx; operands[3] = pic_offset_table_rtx;
} }
[(set_attr "got" "xgot_high")]) [(set_attr "got" "xgot_high")])
...@@ -4284,7 +4345,7 @@ dsrl\t%3,%3,1\n\ ...@@ -4284,7 +4345,7 @@ dsrl\t%3,%3,1\n\
"&& reload_completed" "&& reload_completed"
[(set (match_dup 0) [(set (match_dup 0)
(unspec:DI [(match_dup 1) (match_dup 3)] UNSPEC_LOAD_GOT))] (unspec:DI [(match_dup 1) (match_dup 3)] UNSPEC_LOAD_GOT))]
{ operands[3] = mips_gotoff_global (operands[2]); } { operands[3] = mips_unspec_address (operands[2], SYMBOL_GOTOFF_GLOBAL); }
[(set_attr "got" "load")]) [(set_attr "got" "load")])
;; Insns to fetch a global symbol from a normal GOT. ;; Insns to fetch a global symbol from a normal GOT.
...@@ -4299,7 +4360,7 @@ dsrl\t%3,%3,1\n\ ...@@ -4299,7 +4360,7 @@ dsrl\t%3,%3,1\n\
(unspec:SI [(match_dup 2) (match_dup 3)] UNSPEC_LOAD_GOT))] (unspec:SI [(match_dup 2) (match_dup 3)] UNSPEC_LOAD_GOT))]
{ {
operands[2] = pic_offset_table_rtx; operands[2] = pic_offset_table_rtx;
operands[3] = mips_gotoff_global (operands[1]); operands[3] = mips_unspec_address (operands[1], SYMBOL_GOTOFF_GLOBAL);
} }
[(set_attr "got" "load")]) [(set_attr "got" "load")])
...@@ -4313,7 +4374,7 @@ dsrl\t%3,%3,1\n\ ...@@ -4313,7 +4374,7 @@ dsrl\t%3,%3,1\n\
(unspec:DI [(match_dup 2) (match_dup 3)] UNSPEC_LOAD_GOT))] (unspec:DI [(match_dup 2) (match_dup 3)] UNSPEC_LOAD_GOT))]
{ {
operands[2] = pic_offset_table_rtx; operands[2] = pic_offset_table_rtx;
operands[3] = mips_gotoff_global (operands[1]); operands[3] = mips_unspec_address (operands[1], SYMBOL_GOTOFF_GLOBAL);
} }
[(set_attr "got" "load")]) [(set_attr "got" "load")])
...@@ -4329,7 +4390,7 @@ dsrl\t%3,%3,1\n\ ...@@ -4329,7 +4390,7 @@ dsrl\t%3,%3,1\n\
(unspec:SI [(match_dup 2) (match_dup 3)] UNSPEC_LOAD_GOT))] (unspec:SI [(match_dup 2) (match_dup 3)] UNSPEC_LOAD_GOT))]
{ {
operands[2] = pic_offset_table_rtx; operands[2] = pic_offset_table_rtx;
operands[3] = mips_gotoff_page (operands[1]); operands[3] = mips_unspec_address (operands[1], SYMBOL_GOTOFF_PAGE);
} }
[(set_attr "got" "load")]) [(set_attr "got" "load")])
...@@ -4343,7 +4404,7 @@ dsrl\t%3,%3,1\n\ ...@@ -4343,7 +4404,7 @@ dsrl\t%3,%3,1\n\
(unspec:DI [(match_dup 2) (match_dup 3)] UNSPEC_LOAD_GOT))] (unspec:DI [(match_dup 2) (match_dup 3)] UNSPEC_LOAD_GOT))]
{ {
operands[2] = pic_offset_table_rtx; operands[2] = pic_offset_table_rtx;
operands[3] = mips_gotoff_page (operands[1]); operands[3] = mips_unspec_address (operands[1], SYMBOL_GOTOFF_PAGE);
} }
[(set_attr "got" "load")]) [(set_attr "got" "load")])
......
gcc/doc/invoke.texi
...@@ -7966,24 +7966,14 @@ Use (do not use) assembler relocation operators when dealing with symbolic ...@@ -7966,24 +7966,14 @@ Use (do not use) assembler relocation operators when dealing with symbolic
addresses. The alternative, selected by @option{-mno-explicit-relocs}, addresses. The alternative, selected by @option{-mno-explicit-relocs},
is to use assembler macros instead. is to use assembler macros instead.
@option{-mexplicit-relocs} is usually the default if GCC was @option{-mexplicit-relocs} is usually the default if GCC was configured
configured to use an assembler that supports relocation operators. to use an assembler that supports relocation operators. However, the
However, there are two exceptions: combination of @option{-mabicalls} and @option{-fno-unit-at-a-time}
@itemize @bullet
@item
GCC is not yet able to generate explicit relocations for the combination
of @option{-mabi=64} and @option{-mno-abicalls}. This will be addressed
in a future release.
@item
The combination of @option{-mabicalls} and @option{-fno-unit-at-a-time}
implies @option{-mno-explicit-relocs} unless explicitly overridden. implies @option{-mno-explicit-relocs} unless explicitly overridden.
This is because, when generating abicalls, the choice of relocation This is because, when generating abicalls, the choice of relocation
depends on whether a symbol is local or global. In some rare cases, depends on whether a symbol is local or global. In some rare cases,
GCC will not be able to decide this until the whole compilation unit GCC will not be able to decide this until the whole compilation unit
has been read. has been read.
@end itemize
@item -mrnames @item -mrnames
@itemx -mno-rnames @itemx -mno-rnames
......
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