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s390: convert ".insn" encoding to instruction names

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With z10 as minimum supported machine generation many ".insn" encodings
could be now converted to instruction names. There are couple of exceptions
- stfle is used from the als code built for z900 and cannot be converted
- few ".insn" directives encode unsupported instruction formats

The generated code is identical before/after this change.

Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Vasily Gorbik
2022-02-25 10:39:02 +01:00
parent 10bc15ba3a
commit 731efc9613
10 changed files with 37 additions and 40 deletions
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12
arch/s390/lib/uaccess.c
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@@ -45,7 +45,7 @@ static unsigned long raw_copy_from_user_key(void *to, const void __user *from,
tmp1 = -4096UL;
asm volatile(
" lr 0,%[spec]\n"
"0: .insn ss,0xc80000000000,0(%0,%2),0(%1),0\n"
"0: mvcos 0(%2),0(%1),%0\n"
"6: jz 4f\n"
"1: algr %0,%3\n"
" slgr %1,%3\n"
@@ -56,7 +56,7 @@ static unsigned long raw_copy_from_user_key(void *to, const void __user *from,
" slgr %4,%1\n"
" clgr %0,%4\n" /* copy crosses next page boundary? */
" jnh 5f\n"
"3: .insn ss,0xc80000000000,0(%4,%2),0(%1),0\n"
"3: mvcos 0(%2),0(%1),%4\n"
"7: slgr %0,%4\n"
" j 5f\n"
"4: slgr %0,%0\n"
@@ -104,7 +104,7 @@ static unsigned long raw_copy_to_user_key(void __user *to, const void *from,
tmp1 = -4096UL;
asm volatile(
" lr 0,%[spec]\n"
"0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
"0: mvcos 0(%1),0(%2),%0\n"
"6: jz 4f\n"
"1: algr %0,%3\n"
" slgr %1,%3\n"
@@ -115,7 +115,7 @@ static unsigned long raw_copy_to_user_key(void __user *to, const void *from,
" slgr %4,%1\n"
" clgr %0,%4\n" /* copy crosses next page boundary? */
" jnh 5f\n"
"3: .insn ss,0xc80000000000,0(%4,%1),0(%2),0\n"
"3: mvcos 0(%1),0(%2),%4\n"
"7: slgr %0,%4\n"
" j 5f\n"
"4: slgr %0,%0\n"
@@ -155,7 +155,7 @@ unsigned long __clear_user(void __user *to, unsigned long size)
tmp1 = -4096UL;
asm volatile(
" lr 0,%[spec]\n"
"0: .insn ss,0xc80000000000,0(%0,%1),0(%4),0\n"
"0: mvcos 0(%1),0(%4),%0\n"
" jz 4f\n"
"1: algr %0,%2\n"
" slgr %1,%2\n"
@@ -165,7 +165,7 @@ unsigned long __clear_user(void __user *to, unsigned long size)
" slgr %3,%1\n"
" clgr %0,%3\n" /* copy crosses next page boundary? */
" jnh 5f\n"
"3: .insn ss,0xc80000000000,0(%3,%1),0(%4),0\n"
"3: mvcos 0(%1),0(%4),%3\n"
" slgr %0,%3\n"
" j 5f\n"
"4: slgr %0,%0\n"