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-rw-r--r--libc/string/ia64/memset.S178
1 files changed, 89 insertions, 89 deletions
diff --git a/libc/string/ia64/memset.S b/libc/string/ia64/memset.S
index ed27f3f31..45df5838e 100644
--- a/libc/string/ia64/memset.S
+++ b/libc/string/ia64/memset.S
@@ -46,15 +46,15 @@
#define ptr1 r28
#define ptr2 r27
#define ptr3 r26
-#define ptr9 r24
+#define ptr9 r24
#define loopcnt r23
#define linecnt r22
#define bytecnt r21
#define fvalue f6
-// This routine uses only scratch predicate registers (p6 - p15)
-#define p_scr p6 // default register for same-cycle branches
+/* This routine uses only scratch predicate registers (p6 - p15) */
+#define p_scr p6 /* default register for same-cycle branches */
#define p_nz p7
#define p_zr p8
#define p_unalgn p9
@@ -68,7 +68,7 @@
#define MIN1 15
#define MIN1P1HALF 8
#define LINE_SIZE 128
-#define LSIZE_SH 7 // shift amount
+#define LSIZE_SH 7 /* shift amount */
#define PREF_AHEAD 8
#define USE_FLP
@@ -90,97 +90,97 @@ ENTRY(memset)
movi0 save_lc = ar.lc
} { .mmi
.body
- mov ret0 = dest // return value
- cmp.ne p_nz, p_zr = value, r0 // use stf.spill if value is zero
+ mov ret0 = dest /* return value */
+ cmp.ne p_nz, p_zr = value, r0 /* use stf.spill if value is zero */
cmp.eq p_scr, p0 = cnt, r0
;; }
{ .mmi
- and ptr2 = -(MIN1+1), dest // aligned address
- and tmp = MIN1, dest // prepare to check for alignment
- tbit.nz p_y, p_n = dest, 0 // Do we have an odd address? (M_B_U)
+ and ptr2 = -(MIN1+1), dest /* aligned address */
+ and tmp = MIN1, dest /* prepare to check for alignment */
+ tbit.nz p_y, p_n = dest, 0 /* Do we have an odd address? (M_B_U) */
} { .mib
mov ptr1 = dest
- mux1 value = value, @brcst // create 8 identical bytes in word
-(p_scr) br.ret.dpnt.many rp // return immediately if count = 0
+ mux1 value = value, @brcst /* create 8 identical bytes in word */
+(p_scr) br.ret.dpnt.many rp /* return immediately if count = 0 */
;; }
{ .mib
cmp.ne p_unalgn, p0 = tmp, r0
-} { .mib // NB: # of bytes to move is 1 higher
- sub bytecnt = (MIN1+1), tmp // than loopcnt
- cmp.gt p_scr, p0 = 16, cnt // is it a minimalistic task?
-(p_scr) br.cond.dptk.many .move_bytes_unaligned // go move just a few (M_B_U)
+} { .mib /* NB: # of bytes to move is 1 higher */
+ sub bytecnt = (MIN1+1), tmp /* than loopcnt */
+ cmp.gt p_scr, p0 = 16, cnt /* is it a minimalistic task? */
+(p_scr) br.cond.dptk.many .move_bytes_unaligned /* go move just a few (M_B_U) */
;; }
{ .mmi
-(p_unalgn) add ptr1 = (MIN1+1), ptr2 // after alignment
-(p_unalgn) add ptr2 = MIN1P1HALF, ptr2 // after alignment
-(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 3 // should we do a st8 ?
+(p_unalgn) add ptr1 = (MIN1+1), ptr2 /* after alignment */
+(p_unalgn) add ptr2 = MIN1P1HALF, ptr2 /* after alignment */
+(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 3 /* should we do a st8 ? */
;; }
{ .mib
(p_y) add cnt = -8, cnt
-(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 2 // should we do a st4 ?
+(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 2 /* should we do a st4 ? */
} { .mib
(p_y) st8 [ptr2] = value, -4
(p_n) add ptr2 = 4, ptr2
;; }
{ .mib
(p_yy) add cnt = -4, cnt
-(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 1 // should we do a st2 ?
+(p_unalgn) tbit.nz.unc p_y, p_n = bytecnt, 1 /* should we do a st2 ? */
} { .mib
(p_yy) st4 [ptr2] = value, -2
(p_nn) add ptr2 = 2, ptr2
;; }
{ .mmi
- mov tmp = LINE_SIZE+1 // for compare
+ mov tmp = LINE_SIZE+1 /* for compare */
(p_y) add cnt = -2, cnt
-(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 0 // should we do a st1 ?
+(p_unalgn) tbit.nz.unc p_yy, p_nn = bytecnt, 0 /* should we do a st1 ? */
} { .mmi
- setf.sig fvalue=value // transfer value to FLP side
+ setf.sig fvalue=value /* transfer value to FLP side */
(p_y) st2 [ptr2] = value, -1
(p_n) add ptr2 = 1, ptr2
;; }
{ .mmi
(p_yy) st1 [ptr2] = value
- cmp.gt p_scr, p0 = tmp, cnt // is it a minimalistic task?
+ cmp.gt p_scr, p0 = tmp, cnt /* is it a minimalistic task? */
} { .mbb
(p_yy) add cnt = -1, cnt
-(p_scr) br.cond.dpnt.many .fraction_of_line // go move just a few
+(p_scr) br.cond.dpnt.many .fraction_of_line /* go move just a few */
;; }
{ .mib
nop.m 0
shr.u linecnt = cnt, LSIZE_SH
-(p_zr) br.cond.dptk.many .l1b // Jump to use stf.spill
+(p_zr) br.cond.dptk.many .l1b /* Jump to use stf.spill */
;; }
#ifndef GAS_ALIGN_BREAKS_UNWIND_INFO
- .align 32 // -------- // L1A: store ahead into cache lines; fill later
+ .align 32 /* -------- L1A: store ahead into cache lines; fill later */
#endif
{ .mmi
- and tmp = -(LINE_SIZE), cnt // compute end of range
- mov ptr9 = ptr1 // used for prefetching
- and cnt = (LINE_SIZE-1), cnt // remainder
+ and tmp = -(LINE_SIZE), cnt /* compute end of range */
+ mov ptr9 = ptr1 /* used for prefetching */
+ and cnt = (LINE_SIZE-1), cnt /* remainder */
} { .mmi
- mov loopcnt = PREF_AHEAD-1 // default prefetch loop
- cmp.gt p_scr, p0 = PREF_AHEAD, linecnt // check against actual value
+ mov loopcnt = PREF_AHEAD-1 /* default prefetch loop */
+ cmp.gt p_scr, p0 = PREF_AHEAD, linecnt /* check against actual value */
;; }
{ .mmi
-(p_scr) add loopcnt = -1, linecnt // start of stores
- add ptr2 = 8, ptr1 // (beyond prefetch stores)
- add ptr1 = tmp, ptr1 // first address beyond total
-;; } // range
+(p_scr) add loopcnt = -1, linecnt /* start of stores */
+ add ptr2 = 8, ptr1 /* (beyond prefetch stores) */
+ add ptr1 = tmp, ptr1 /* first address beyond total */
+;; } /* range */
{ .mmi
- add tmp = -1, linecnt // next loop count
+ add tmp = -1, linecnt /* next loop count */
movi0 ar.lc = loopcnt
;; }
.pref_l1a:
{ .mib
- store [ptr9] = myval, 128 // Do stores one cache line apart
+ store [ptr9] = myval, 128 /* Do stores one cache line apart */
nop.i 0
br.cloop.dptk.few .pref_l1a
;; }
{ .mmi
- add ptr0 = 16, ptr2 // Two stores in parallel
+ add ptr0 = 16, ptr2 /* Two stores in parallel */
movi0 ar.lc = tmp
;; }
.l1ax:
@@ -211,7 +211,7 @@ ENTRY(memset)
{ .mmi
store [ptr2] = myval, 8
store [ptr0] = myval, 32
- cmp.lt p_scr, p0 = ptr9, ptr1 // do we need more prefetching?
+ cmp.lt p_scr, p0 = ptr9, ptr1 /* do we need more prefetching? */
;; }
{ .mmb
store [ptr2] = myval, 24
@@ -219,9 +219,9 @@ ENTRY(memset)
br.cloop.dptk.few .l1ax
;; }
{ .mbb
- cmp.le p_scr, p0 = 8, cnt // just a few bytes left ?
-(p_scr) br.cond.dpnt.many .fraction_of_line // Branch no. 2
- br.cond.dpnt.many .move_bytes_from_alignment // Branch no. 3
+ cmp.le p_scr, p0 = 8, cnt /* just a few bytes left ? */
+(p_scr) br.cond.dpnt.many .fraction_of_line /* Branch no. 2 */
+ br.cond.dpnt.many .move_bytes_from_alignment /* Branch no. 3 */
;; }
#ifdef GAS_ALIGN_BREAKS_UNWIND_INFO
@@ -229,32 +229,32 @@ ENTRY(memset)
#else
.align 32
#endif
-.l1b: // ------------------ // L1B: store ahead into cache lines; fill later
+.l1b: /* ------------------ L1B: store ahead into cache lines; fill later */
{ .mmi
- and tmp = -(LINE_SIZE), cnt // compute end of range
- mov ptr9 = ptr1 // used for prefetching
- and cnt = (LINE_SIZE-1), cnt // remainder
+ and tmp = -(LINE_SIZE), cnt /* compute end of range */
+ mov ptr9 = ptr1 /* used for prefetching */
+ and cnt = (LINE_SIZE-1), cnt /* remainder */
} { .mmi
- mov loopcnt = PREF_AHEAD-1 // default prefetch loop
- cmp.gt p_scr, p0 = PREF_AHEAD, linecnt // check against actual value
+ mov loopcnt = PREF_AHEAD-1 /* default prefetch loop */
+ cmp.gt p_scr, p0 = PREF_AHEAD, linecnt /* check against actual value */
;; }
{ .mmi
(p_scr) add loopcnt = -1, linecnt
- add ptr2 = 16, ptr1 // start of stores (beyond prefetch stores)
- add ptr1 = tmp, ptr1 // first address beyond total range
+ add ptr2 = 16, ptr1 /* start of stores (beyond prefetch stores) */
+ add ptr1 = tmp, ptr1 /* first address beyond total range */
;; }
{ .mmi
- add tmp = -1, linecnt // next loop count
+ add tmp = -1, linecnt /* next loop count */
movi0 ar.lc = loopcnt
;; }
.pref_l1b:
{ .mib
- stf.spill [ptr9] = f0, 128 // Do stores one cache line apart
+ stf.spill [ptr9] = f0, 128 /* Do stores one cache line apart */
nop.i 0
br.cloop.dptk.few .pref_l1b
;; }
{ .mmi
- add ptr0 = 16, ptr2 // Two stores in parallel
+ add ptr0 = 16, ptr2 /* Two stores in parallel */
movi0 ar.lc = tmp
;; }
.l1bx:
@@ -269,7 +269,7 @@ ENTRY(memset)
{ .mmi
stf.spill [ptr2] = f0, 32
stf.spill [ptr0] = f0, 64
- cmp.lt p_scr, p0 = ptr9, ptr1 // do we need more prefetching?
+ cmp.lt p_scr, p0 = ptr9, ptr1 /* do we need more prefetching? */
;; }
{ .mmb
stf.spill [ptr2] = f0, 32
@@ -277,14 +277,14 @@ ENTRY(memset)
br.cloop.dptk.few .l1bx
;; }
{ .mib
- cmp.gt p_scr, p0 = 8, cnt // just a few bytes left ?
+ cmp.gt p_scr, p0 = 8, cnt /* just a few bytes left ? */
(p_scr) br.cond.dpnt.many .move_bytes_from_alignment
;; }
.fraction_of_line:
{ .mib
add ptr2 = 16, ptr1
- shr.u loopcnt = cnt, 5 // loopcnt = cnt / 32
+ shr.u loopcnt = cnt, 5 /* loopcnt = cnt / 32 */
;; }
{ .mib
cmp.eq p_scr, p0 = loopcnt, r0
@@ -292,13 +292,13 @@ ENTRY(memset)
(p_scr) br.cond.dpnt.many store_words
;; }
{ .mib
- and cnt = 0x1f, cnt // compute the remaining cnt
+ and cnt = 0x1f, cnt /* compute the remaining cnt */
movi0 ar.lc = loopcnt
;; }
#ifndef GAS_ALIGN_BREAKS_UNWIND_INFO
.align 32
#endif
-.l2: // ---------------------------- // L2A: store 32B in 2 cycles
+.l2: /* ---------------------------- L2A: store 32B in 2 cycles */
{ .mmb
store [ptr1] = myval, 8
store [ptr2] = myval, 8
@@ -309,34 +309,34 @@ ENTRY(memset)
;; }
store_words:
{ .mib
- cmp.gt p_scr, p0 = 8, cnt // just a few bytes left ?
-(p_scr) br.cond.dpnt.many .move_bytes_from_alignment // Branch
+ cmp.gt p_scr, p0 = 8, cnt /* just a few bytes left ? */
+(p_scr) br.cond.dpnt.many .move_bytes_from_alignment /* Branch */
;; }
{ .mmi
- store [ptr1] = myval, 8 // store
- cmp.le p_y, p_n = 16, cnt //
- add cnt = -8, cnt // subtract
+ store [ptr1] = myval, 8 /* store */
+ cmp.le p_y, p_n = 16, cnt /* */
+ add cnt = -8, cnt /* subtract */
;; }
{ .mmi
-(p_y) store [ptr1] = myval, 8 // store
-(p_y) cmp.le.unc p_yy, p_nn = 16, cnt //
-(p_y) add cnt = -8, cnt // subtract
+(p_y) store [ptr1] = myval, 8 /* store */
+(p_y) cmp.le.unc p_yy, p_nn = 16, cnt /* */
+(p_y) add cnt = -8, cnt /* subtract */
;; }
-{ .mmi // store
-(p_yy) store [ptr1] = myval, 8 //
-(p_yy) add cnt = -8, cnt // subtract
+{ .mmi /* store */
+(p_yy) store [ptr1] = myval, 8 /* */
+(p_yy) add cnt = -8, cnt /* subtract */
;; }
.move_bytes_from_alignment:
{ .mib
cmp.eq p_scr, p0 = cnt, r0
- tbit.nz.unc p_y, p0 = cnt, 2 // should we terminate with a st4 ?
+ tbit.nz.unc p_y, p0 = cnt, 2 /* should we terminate with a st4 ? */
(p_scr) br.cond.dpnt.few .restore_and_exit
;; }
{ .mib
(p_y) st4 [ptr1] = value, 4
- tbit.nz.unc p_yy, p0 = cnt, 1 // should we terminate with a st2 ?
+ tbit.nz.unc p_yy, p0 = cnt, 1 /* should we terminate with a st2 ? */
;; }
{ .mib
(p_yy) st2 [ptr1] = value, 2
@@ -362,38 +362,38 @@ store_words:
(p_n) add ptr2 = 2, ptr1
} { .mmi
(p_y) add ptr2 = 3, ptr1
-(p_y) st1 [ptr1] = value, 1 // fill 1 (odd-aligned) byte
-(p_y) add cnt = -1, cnt // [15, 14 (or less) left]
+(p_y) st1 [ptr1] = value, 1 /* fill 1 (odd-aligned) byte */
+(p_y) add cnt = -1, cnt /* [15, 14 (or less) left] */
;; }
{ .mmi
(p_yy) cmp.le.unc p_y, p0 = 8, cnt
- add ptr3 = ptr1, cnt // prepare last store
+ add ptr3 = ptr1, cnt /* prepare last store */
movi0 ar.lc = save_lc
} { .mmi
-(p_yy) st2 [ptr1] = value, 4 // fill 2 (aligned) bytes
-(p_yy) st2 [ptr2] = value, 4 // fill 2 (aligned) bytes
-(p_yy) add cnt = -4, cnt // [11, 10 (o less) left]
+(p_yy) st2 [ptr1] = value, 4 /* fill 2 (aligned) bytes */
+(p_yy) st2 [ptr2] = value, 4 /* fill 2 (aligned) bytes */
+(p_yy) add cnt = -4, cnt /* [11, 10 (o less) left] */
;; }
{ .mmi
(p_y) cmp.le.unc p_yy, p0 = 8, cnt
- add ptr3 = -1, ptr3 // last store
- tbit.nz p_scr, p0 = cnt, 1 // will there be a st2 at the end ?
+ add ptr3 = -1, ptr3 /* last store */
+ tbit.nz p_scr, p0 = cnt, 1 /* will there be a st2 at the end ? */
} { .mmi
-(p_y) st2 [ptr1] = value, 4 // fill 2 (aligned) bytes
-(p_y) st2 [ptr2] = value, 4 // fill 2 (aligned) bytes
-(p_y) add cnt = -4, cnt // [7, 6 (or less) left]
+(p_y) st2 [ptr1] = value, 4 /* fill 2 (aligned) bytes */
+(p_y) st2 [ptr2] = value, 4 /* fill 2 (aligned) bytes */
+(p_y) add cnt = -4, cnt /* [7, 6 (or less) left] */
;; }
{ .mmi
-(p_yy) st2 [ptr1] = value, 4 // fill 2 (aligned) bytes
-(p_yy) st2 [ptr2] = value, 4 // fill 2 (aligned) bytes
- // [3, 2 (or less) left]
- tbit.nz p_y, p0 = cnt, 0 // will there be a st1 at the end ?
+(p_yy) st2 [ptr1] = value, 4 /* fill 2 (aligned) bytes */
+(p_yy) st2 [ptr2] = value, 4 /* fill 2 (aligned) bytes */
+ /* [3, 2 (or less) left] */
+ tbit.nz p_y, p0 = cnt, 0 /* will there be a st1 at the end ? */
} { .mmi
(p_yy) add cnt = -4, cnt
;; }
{ .mmb
-(p_scr) st2 [ptr1] = value // fill 2 (aligned) bytes
-(p_y) st1 [ptr3] = value // fill last byte (using ptr3)
+(p_scr) st2 [ptr1] = value /* fill 2 (aligned) bytes */
+(p_y) st1 [ptr3] = value /* fill last byte (using ptr3) */
br.ret.sptk.many rp
;; }
END(memset)
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-03 04:21:18 +0000