libgcc.S: Gather related function in the same input section.
* config/avr/libgcc.S: Gather related function in the same input section. __divmodsi4): Use XCALL/XJMP instead of rcall/rjmp for external references. (__udivmodqi4, __divmodqi4, __udivmodhi4, __divmodhi4, __udivmodsi4, __divmodsi4, __prologue_saves__, __epilogue_restores__, _exit, __tablejump2__, __tablejump__, __do_copy_data, __do_clear_bss, __do_global_ctors, __do_global_dtors, __tablejump_elpm__): Enclose in DEFUN/ENDF. From-SVN: r177133
This commit is contained in:
Georg-Johann Lay
Georg-Johann Lay
parent
62be5d0aad
commit
7ea56b2382
|
|
@ -1,3 +1,16 @@
|
|||
2011-08-02 Georg-Johann Lay <avr@gjlay.de>
|
||||
|
||||
* config/avr/libgcc.S: Gather related function in the
|
||||
same input section.
|
||||
(__mulqihi3, __mulqihi3, __divmodqi4, __divmodhi4, __udivmodsi4,
|
||||
__divmodsi4): Use XCALL/XJMP instead of rcall/rjmp for external
|
||||
references.
|
||||
(__udivmodqi4, __divmodqi4, __udivmodhi4, __divmodhi4,
|
||||
__udivmodsi4, __divmodsi4, __prologue_saves__,
|
||||
__epilogue_restores__, _exit, __tablejump2__, __tablejump__,
|
||||
__do_copy_data, __do_clear_bss, __do_global_ctors,
|
||||
__do_global_dtors, __tablejump_elpm__): Enclose in DEFUN/ENDF.
|
||||
|
||||
2011-08-02 Uros Bizjak <ubizjak@gmail.com>
|
||||
|
||||
PR target/47766
|
||||
|
|
|
|||
|
|
@ -34,7 +34,15 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|||
This can make better code because GCC knows exactly which
|
||||
of the call-used registers (not all of them) are clobbered. */
|
||||
|
||||
.section .text.libgcc, "ax", @progbits
|
||||
/* FIXME: At present, there is no SORT directive in the linker
|
||||
script so that we must not assume that different modules
|
||||
in the same input section like .libgcc.text.mul will be
|
||||
located close together. Therefore, we cannot use
|
||||
RCALL/RJMP to call a function like __udivmodhi4 from
|
||||
__divmodhi4 and have to use lengthy XCALL/XJMP even
|
||||
though they are in the same input section and all same
|
||||
input sections together are small enough to reach every
|
||||
location with a RCALL/RJMP instruction. */
|
||||
|
||||
.macro mov_l r_dest, r_src
|
||||
#if defined (__AVR_HAVE_MOVW__)
|
||||
|
|
@ -72,6 +80,8 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|||
.endm
|
||||
|
||||
|
||||
.section .text.libgcc.mul, "ax", @progbits
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
/* Note: mulqi3, mulhi3 are open-coded on the enhanced core. */
|
||||
#if !defined (__AVR_HAVE_MUL__)
|
||||
|
|
@ -112,7 +122,7 @@ DEFUN __mulqihi3
|
|||
clr r23
|
||||
sbrc r22, 7
|
||||
dec r22
|
||||
rjmp __mulhi3
|
||||
XJMP __mulhi3
|
||||
ENDF __mulqihi3:
|
||||
#endif /* defined (L_mulqihi3) */
|
||||
|
||||
|
|
@ -120,7 +130,7 @@ ENDF __mulqihi3:
|
|||
DEFUN __umulqihi3
|
||||
clr r25
|
||||
clr r23
|
||||
rjmp __mulhi3
|
||||
XJMP __mulhi3
|
||||
ENDF __umulqihi3
|
||||
#endif /* defined (L_umulqihi3) */
|
||||
|
||||
|
|
@ -447,6 +457,8 @@ ENDF __mulsi3
|
|||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
|
||||
|
||||
.section .text.libgcc.div, "ax", @progbits
|
||||
|
||||
/*******************************************************
|
||||
Division 8 / 8 => (result + remainder)
|
||||
*******************************************************/
|
||||
|
|
@ -456,9 +468,7 @@ ENDF __mulsi3
|
|||
#define r_cnt r23 /* loop count */
|
||||
|
||||
#if defined (L_udivmodqi4)
|
||||
.global __udivmodqi4
|
||||
.func __udivmodqi4
|
||||
__udivmodqi4:
|
||||
DEFUN __udivmodqi4
|
||||
sub r_rem,r_rem ; clear remainder and carry
|
||||
ldi r_cnt,9 ; init loop counter
|
||||
rjmp __udivmodqi4_ep ; jump to entry point
|
||||
|
|
@ -474,13 +484,11 @@ __udivmodqi4_ep:
|
|||
com r_arg1 ; complement result
|
||||
; because C flag was complemented in loop
|
||||
ret
|
||||
.endfunc
|
||||
ENDF __udivmodqi4
|
||||
#endif /* defined (L_udivmodqi4) */
|
||||
|
||||
#if defined (L_divmodqi4)
|
||||
.global __divmodqi4
|
||||
.func __divmodqi4
|
||||
__divmodqi4:
|
||||
DEFUN __divmodqi4
|
||||
bst r_arg1,7 ; store sign of dividend
|
||||
mov __tmp_reg__,r_arg1
|
||||
eor __tmp_reg__,r_arg2; r0.7 is sign of result
|
||||
|
|
@ -488,7 +496,7 @@ __divmodqi4:
|
|||
neg r_arg1 ; dividend negative : negate
|
||||
sbrc r_arg2,7
|
||||
neg r_arg2 ; divisor negative : negate
|
||||
rcall __udivmodqi4 ; do the unsigned div/mod
|
||||
XCALL __udivmodqi4 ; do the unsigned div/mod
|
||||
brtc __divmodqi4_1
|
||||
neg r_rem ; correct remainder sign
|
||||
__divmodqi4_1:
|
||||
|
|
@ -496,7 +504,7 @@ __divmodqi4_1:
|
|||
neg r_arg1 ; correct result sign
|
||||
__divmodqi4_exit:
|
||||
ret
|
||||
.endfunc
|
||||
ENDF __divmodqi4
|
||||
#endif /* defined (L_divmodqi4) */
|
||||
|
||||
#undef r_rem
|
||||
|
|
@ -522,9 +530,7 @@ __divmodqi4_exit:
|
|||
#define r_cnt r21 /* loop count */
|
||||
|
||||
#if defined (L_udivmodhi4)
|
||||
.global __udivmodhi4
|
||||
.func __udivmodhi4
|
||||
__udivmodhi4:
|
||||
DEFUN __udivmodhi4
|
||||
sub r_remL,r_remL
|
||||
sub r_remH,r_remH ; clear remainder and carry
|
||||
ldi r_cnt,17 ; init loop counter
|
||||
|
|
@ -550,13 +556,11 @@ __udivmodhi4_ep:
|
|||
mov_l r_arg1L, r_remL ; remainder
|
||||
mov_h r_arg1H, r_remH
|
||||
ret
|
||||
.endfunc
|
||||
ENDF __udivmodhi4
|
||||
#endif /* defined (L_udivmodhi4) */
|
||||
|
||||
#if defined (L_divmodhi4)
|
||||
.global __divmodhi4
|
||||
.func __divmodhi4
|
||||
__divmodhi4:
|
||||
DEFUN __divmodhi4
|
||||
.global _div
|
||||
_div:
|
||||
bst r_arg1H,7 ; store sign of dividend
|
||||
|
|
@ -565,7 +569,7 @@ _div:
|
|||
rcall __divmodhi4_neg1 ; dividend negative : negate
|
||||
sbrc r_arg2H,7
|
||||
rcall __divmodhi4_neg2 ; divisor negative : negate
|
||||
rcall __udivmodhi4 ; do the unsigned div/mod
|
||||
XCALL __udivmodhi4 ; do the unsigned div/mod
|
||||
rcall __divmodhi4_neg1 ; correct remainder sign
|
||||
tst __tmp_reg__
|
||||
brpl __divmodhi4_exit
|
||||
|
|
@ -581,7 +585,7 @@ __divmodhi4_neg1:
|
|||
neg r_arg1L ; correct dividend/remainder sign
|
||||
sbci r_arg1H,0xff
|
||||
ret
|
||||
.endfunc
|
||||
ENDF __divmodhi4
|
||||
#endif /* defined (L_divmodhi4) */
|
||||
|
||||
#undef r_remH
|
||||
|
|
@ -618,9 +622,7 @@ __divmodhi4_neg1:
|
|||
#define r_cnt __zero_reg__ /* loop count (0 after the loop!) */
|
||||
|
||||
#if defined (L_udivmodsi4)
|
||||
.global __udivmodsi4
|
||||
.func __udivmodsi4
|
||||
__udivmodsi4:
|
||||
DEFUN __udivmodsi4
|
||||
ldi r_remL, 33 ; init loop counter
|
||||
mov r_cnt, r_remL
|
||||
sub r_remL,r_remL
|
||||
|
|
@ -664,20 +666,18 @@ __udivmodsi4_ep:
|
|||
mov_l r_arg1HL, r_remHL
|
||||
mov_h r_arg1HH, r_remHH
|
||||
ret
|
||||
.endfunc
|
||||
ENDF __udivmodsi4
|
||||
#endif /* defined (L_udivmodsi4) */
|
||||
|
||||
#if defined (L_divmodsi4)
|
||||
.global __divmodsi4
|
||||
.func __divmodsi4
|
||||
__divmodsi4:
|
||||
DEFUN __divmodsi4
|
||||
bst r_arg1HH,7 ; store sign of dividend
|
||||
mov __tmp_reg__,r_arg1HH
|
||||
eor __tmp_reg__,r_arg2HH ; r0.7 is sign of result
|
||||
rcall __divmodsi4_neg1 ; dividend negative : negate
|
||||
sbrc r_arg2HH,7
|
||||
rcall __divmodsi4_neg2 ; divisor negative : negate
|
||||
rcall __udivmodsi4 ; do the unsigned div/mod
|
||||
XCALL __udivmodsi4 ; do the unsigned div/mod
|
||||
rcall __divmodsi4_neg1 ; correct remainder sign
|
||||
rol __tmp_reg__
|
||||
brcc __divmodsi4_exit
|
||||
|
|
@ -701,17 +701,18 @@ __divmodsi4_neg1:
|
|||
sbci r_arg1HL,0xff
|
||||
sbci r_arg1HH,0xff
|
||||
ret
|
||||
.endfunc
|
||||
ENDF __divmodsi4
|
||||
#endif /* defined (L_divmodsi4) */
|
||||
|
||||
|
||||
.section .text.libgcc.prologue, "ax", @progbits
|
||||
|
||||
/**********************************
|
||||
* This is a prologue subroutine
|
||||
**********************************/
|
||||
#if defined (L_prologue)
|
||||
|
||||
.global __prologue_saves__
|
||||
.func __prologue_saves__
|
||||
__prologue_saves__:
|
||||
DEFUN __prologue_saves__
|
||||
push r2
|
||||
push r3
|
||||
push r4
|
||||
|
|
@ -745,7 +746,7 @@ __prologue_saves__:
|
|||
ijmp
|
||||
#endif
|
||||
|
||||
.endfunc
|
||||
ENDF __prologue_saves__
|
||||
#endif /* defined (L_prologue) */
|
||||
|
||||
/*
|
||||
|
|
@ -753,9 +754,7 @@ __prologue_saves__:
|
|||
*/
|
||||
#if defined (L_epilogue)
|
||||
|
||||
.global __epilogue_restores__
|
||||
.func __epilogue_restores__
|
||||
__epilogue_restores__:
|
||||
DEFUN __epilogue_restores__
|
||||
ldd r2,Y+18
|
||||
ldd r3,Y+17
|
||||
ldd r4,Y+16
|
||||
|
|
@ -784,17 +783,15 @@ __epilogue_restores__:
|
|||
mov_l r28, r26
|
||||
mov_h r29, r27
|
||||
ret
|
||||
.endfunc
|
||||
ENDF __epilogue_restores__
|
||||
#endif /* defined (L_epilogue) */
|
||||
|
||||
#ifdef L_exit
|
||||
.section .fini9,"ax",@progbits
|
||||
.global _exit
|
||||
.func _exit
|
||||
_exit:
|
||||
DEFUN _exit
|
||||
.weak exit
|
||||
exit:
|
||||
.endfunc
|
||||
ENDF _exit
|
||||
|
||||
/* Code from .fini8 ... .fini1 sections inserted by ld script. */
|
||||
|
||||
|
|
@ -812,14 +809,17 @@ _cleanup:
|
|||
.endfunc
|
||||
#endif /* defined (L_cleanup) */
|
||||
|
||||
|
||||
.section .text.libgcc, "ax", @progbits
|
||||
|
||||
#ifdef L_tablejump
|
||||
.global __tablejump2__
|
||||
.func __tablejump2__
|
||||
__tablejump2__:
|
||||
DEFUN __tablejump2__
|
||||
lsl r30
|
||||
rol r31
|
||||
.global __tablejump__
|
||||
__tablejump__:
|
||||
;; FALLTHRU
|
||||
ENDF __tablejump2__
|
||||
|
||||
DEFUN __tablejump__
|
||||
#if defined (__AVR_HAVE_LPMX__)
|
||||
lpm __tmp_reg__, Z+
|
||||
lpm r31, Z
|
||||
|
|
@ -842,13 +842,12 @@ __tablejump__:
|
|||
#endif
|
||||
ret
|
||||
#endif
|
||||
.endfunc
|
||||
ENDF __tablejump__
|
||||
#endif /* defined (L_tablejump) */
|
||||
|
||||
#ifdef L_copy_data
|
||||
.section .init4,"ax",@progbits
|
||||
.global __do_copy_data
|
||||
__do_copy_data:
|
||||
DEFUN __do_copy_data
|
||||
#if defined(__AVR_HAVE_ELPMX__)
|
||||
ldi r17, hi8(__data_end)
|
||||
ldi r26, lo8(__data_start)
|
||||
|
|
@ -905,14 +904,14 @@ __do_copy_data:
|
|||
cpc r27, r17
|
||||
brne .L__do_copy_data_loop
|
||||
#endif /* !defined(__AVR_HAVE_ELPMX__) && !defined(__AVR_HAVE_ELPM__) */
|
||||
ENDF __do_copy_data
|
||||
#endif /* L_copy_data */
|
||||
|
||||
/* __do_clear_bss is only necessary if there is anything in .bss section. */
|
||||
|
||||
#ifdef L_clear_bss
|
||||
.section .init4,"ax",@progbits
|
||||
.global __do_clear_bss
|
||||
__do_clear_bss:
|
||||
DEFUN __do_clear_bss
|
||||
ldi r17, hi8(__bss_end)
|
||||
ldi r26, lo8(__bss_start)
|
||||
ldi r27, hi8(__bss_start)
|
||||
|
|
@ -923,6 +922,7 @@ __do_clear_bss:
|
|||
cpi r26, lo8(__bss_end)
|
||||
cpc r27, r17
|
||||
brne .do_clear_bss_loop
|
||||
ENDF __do_clear_bss
|
||||
#endif /* L_clear_bss */
|
||||
|
||||
/* __do_global_ctors and __do_global_dtors are only necessary
|
||||
|
|
@ -930,9 +930,8 @@ __do_clear_bss:
|
|||
|
||||
#ifdef L_ctors
|
||||
.section .init6,"ax",@progbits
|
||||
.global __do_global_ctors
|
||||
DEFUN __do_global_ctors
|
||||
#if defined(__AVR_HAVE_RAMPZ__)
|
||||
__do_global_ctors:
|
||||
ldi r17, hi8(__ctors_start)
|
||||
ldi r28, lo8(__ctors_end)
|
||||
ldi r29, hi8(__ctors_end)
|
||||
|
|
@ -952,7 +951,6 @@ __do_global_ctors:
|
|||
cpc r16, r24
|
||||
brne .L__do_global_ctors_loop
|
||||
#else
|
||||
__do_global_ctors:
|
||||
ldi r17, hi8(__ctors_start)
|
||||
ldi r28, lo8(__ctors_end)
|
||||
ldi r29, hi8(__ctors_end)
|
||||
|
|
@ -967,13 +965,13 @@ __do_global_ctors:
|
|||
cpc r29, r17
|
||||
brne .L__do_global_ctors_loop
|
||||
#endif /* defined(__AVR_HAVE_RAMPZ__) */
|
||||
ENDF __do_global_ctors
|
||||
#endif /* L_ctors */
|
||||
|
||||
#ifdef L_dtors
|
||||
.section .fini6,"ax",@progbits
|
||||
.global __do_global_dtors
|
||||
DEFUN __do_global_dtors
|
||||
#if defined(__AVR_HAVE_RAMPZ__)
|
||||
__do_global_dtors:
|
||||
ldi r17, hi8(__dtors_end)
|
||||
ldi r28, lo8(__dtors_start)
|
||||
ldi r29, hi8(__dtors_start)
|
||||
|
|
@ -993,7 +991,6 @@ __do_global_dtors:
|
|||
cpc r16, r24
|
||||
brne .L__do_global_dtors_loop
|
||||
#else
|
||||
__do_global_dtors:
|
||||
ldi r17, hi8(__dtors_end)
|
||||
ldi r28, lo8(__dtors_start)
|
||||
ldi r29, hi8(__dtors_start)
|
||||
|
|
@ -1008,12 +1005,13 @@ __do_global_dtors:
|
|||
cpc r29, r17
|
||||
brne .L__do_global_dtors_loop
|
||||
#endif /* defined(__AVR_HAVE_RAMPZ__) */
|
||||
ENDF __do_global_dtors
|
||||
#endif /* L_dtors */
|
||||
|
||||
.section .text.libgcc, "ax", @progbits
|
||||
|
||||
#ifdef L_tablejump_elpm
|
||||
.global __tablejump_elpm__
|
||||
.func __tablejump_elpm__
|
||||
__tablejump_elpm__:
|
||||
DEFUN __tablejump_elpm__
|
||||
#if defined (__AVR_HAVE_ELPM__)
|
||||
#if defined (__AVR_HAVE_LPMX__)
|
||||
elpm __tmp_reg__, Z+
|
||||
|
|
@ -1037,10 +1035,12 @@ __tablejump_elpm__:
|
|||
ret
|
||||
#endif
|
||||
#endif /* defined (__AVR_HAVE_ELPM__) */
|
||||
.endfunc
|
||||
ENDF __tablejump_elpm__
|
||||
#endif /* defined (L_tablejump_elpm) */
|
||||
|
||||
|
||||
.section .text.libgcc.builtins, "ax", @progbits
|
||||
|
||||
/**********************************
|
||||
* Find first set Bit (ffs)
|
||||
**********************************/
|
||||
|
|
@ -1440,6 +1440,8 @@ DEFUN __ashldi3
|
|||
ENDF __ashldi3
|
||||
#endif /* defined (L_ashldi3) */
|
||||
|
||||
|
||||
.section .text.libgcc.fmul, "ax", @progbits
|
||||
|
||||
/***********************************************************/
|
||||
;;; Softmul versions of FMUL, FMULS and FMULSU to implement
|
||||
|
|
|
|||
Loading…
Reference in New Issue