diff options
Diffstat (limited to 'arch/s390/lib/uaccess.c')
| -rw-r--r-- | arch/s390/lib/uaccess.c | 136 |
1 files changed, 61 insertions, 75 deletions
diff --git a/arch/s390/lib/uaccess.c b/arch/s390/lib/uaccess.c index 53dd5d7a0c96..4614d415bb58 100644 --- a/arch/s390/lib/uaccess.c +++ b/arch/s390/lib/uaccess.c @@ -15,20 +15,6 @@ #include <asm/mmu_context.h> #include <asm/facility.h> -#ifndef CONFIG_64BIT -#define AHI "ahi" -#define ALR "alr" -#define CLR "clr" -#define LHI "lhi" -#define SLR "slr" -#else -#define AHI "aghi" -#define ALR "algr" -#define CLR "clgr" -#define LHI "lghi" -#define SLR "slgr" -#endif - static struct static_key have_mvcos = STATIC_KEY_INIT_FALSE; static inline unsigned long copy_from_user_mvcos(void *x, const void __user *ptr, @@ -41,29 +27,29 @@ static inline unsigned long copy_from_user_mvcos(void *x, const void __user *ptr asm volatile( "0: .insn ss,0xc80000000000,0(%0,%2),0(%1),0\n" "9: jz 7f\n" - "1:"ALR" %0,%3\n" - " "SLR" %1,%3\n" - " "SLR" %2,%3\n" + "1: algr %0,%3\n" + " slgr %1,%3\n" + " slgr %2,%3\n" " j 0b\n" "2: la %4,4095(%1)\n"/* %4 = ptr + 4095 */ " nr %4,%3\n" /* %4 = (ptr + 4095) & -4096 */ - " "SLR" %4,%1\n" - " "CLR" %0,%4\n" /* copy crosses next page boundary? */ + " slgr %4,%1\n" + " clgr %0,%4\n" /* copy crosses next page boundary? */ " jnh 4f\n" "3: .insn ss,0xc80000000000,0(%4,%2),0(%1),0\n" - "10:"SLR" %0,%4\n" - " "ALR" %2,%4\n" - "4:"LHI" %4,-1\n" - " "ALR" %4,%0\n" /* copy remaining size, subtract 1 */ + "10:slgr %0,%4\n" + " algr %2,%4\n" + "4: lghi %4,-1\n" + " algr %4,%0\n" /* copy remaining size, subtract 1 */ " bras %3,6f\n" /* memset loop */ " xc 0(1,%2),0(%2)\n" "5: xc 0(256,%2),0(%2)\n" " la %2,256(%2)\n" - "6:"AHI" %4,-256\n" + "6: aghi %4,-256\n" " jnm 5b\n" " ex %4,0(%3)\n" " j 8f\n" - "7:"SLR" %0,%0\n" + "7:slgr %0,%0\n" "8:\n" EX_TABLE(0b,2b) EX_TABLE(3b,4b) EX_TABLE(9b,2b) EX_TABLE(10b,4b) : "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2) @@ -82,32 +68,32 @@ static inline unsigned long copy_from_user_mvcp(void *x, const void __user *ptr, " sacf 0\n" "0: mvcp 0(%0,%2),0(%1),%3\n" "10:jz 8f\n" - "1:"ALR" %0,%3\n" + "1: algr %0,%3\n" " la %1,256(%1)\n" " la %2,256(%2)\n" "2: mvcp 0(%0,%2),0(%1),%3\n" "11:jnz 1b\n" " j 8f\n" "3: la %4,255(%1)\n" /* %4 = ptr + 255 */ - " "LHI" %3,-4096\n" + " lghi %3,-4096\n" " nr %4,%3\n" /* %4 = (ptr + 255) & -4096 */ - " "SLR" %4,%1\n" - " "CLR" %0,%4\n" /* copy crosses next page boundary? */ + " slgr %4,%1\n" + " clgr %0,%4\n" /* copy crosses next page boundary? */ " jnh 5f\n" "4: mvcp 0(%4,%2),0(%1),%3\n" - "12:"SLR" %0,%4\n" - " "ALR" %2,%4\n" - "5:"LHI" %4,-1\n" - " "ALR" %4,%0\n" /* copy remaining size, subtract 1 */ + "12:slgr %0,%4\n" + " algr %2,%4\n" + "5: lghi %4,-1\n" + " algr %4,%0\n" /* copy remaining size, subtract 1 */ " bras %3,7f\n" /* memset loop */ " xc 0(1,%2),0(%2)\n" "6: xc 0(256,%2),0(%2)\n" " la %2,256(%2)\n" - "7:"AHI" %4,-256\n" + "7: aghi %4,-256\n" " jnm 6b\n" " ex %4,0(%3)\n" " j 9f\n" - "8:"SLR" %0,%0\n" + "8:slgr %0,%0\n" "9: sacf 768\n" EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,5b) EX_TABLE(10b,3b) EX_TABLE(11b,3b) EX_TABLE(12b,5b) @@ -134,19 +120,19 @@ static inline unsigned long copy_to_user_mvcos(void __user *ptr, const void *x, asm volatile( "0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n" "6: jz 4f\n" - "1:"ALR" %0,%3\n" - " "SLR" %1,%3\n" - " "SLR" %2,%3\n" + "1: algr %0,%3\n" + " slgr %1,%3\n" + " slgr %2,%3\n" " j 0b\n" "2: la %4,4095(%1)\n"/* %4 = ptr + 4095 */ " nr %4,%3\n" /* %4 = (ptr + 4095) & -4096 */ - " "SLR" %4,%1\n" - " "CLR" %0,%4\n" /* copy crosses next page boundary? */ + " 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" - "7:"SLR" %0,%4\n" + "7: slgr %0,%4\n" " j 5f\n" - "4:"SLR" %0,%0\n" + "4: slgr %0,%0\n" "5:\n" EX_TABLE(0b,2b) EX_TABLE(3b,5b) EX_TABLE(6b,2b) EX_TABLE(7b,5b) : "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2) @@ -165,22 +151,22 @@ static inline unsigned long copy_to_user_mvcs(void __user *ptr, const void *x, " sacf 0\n" "0: mvcs 0(%0,%1),0(%2),%3\n" "7: jz 5f\n" - "1:"ALR" %0,%3\n" + "1: algr %0,%3\n" " la %1,256(%1)\n" " la %2,256(%2)\n" "2: mvcs 0(%0,%1),0(%2),%3\n" "8: jnz 1b\n" " j 5f\n" "3: la %4,255(%1)\n" /* %4 = ptr + 255 */ - " "LHI" %3,-4096\n" + " lghi %3,-4096\n" " nr %4,%3\n" /* %4 = (ptr + 255) & -4096 */ - " "SLR" %4,%1\n" - " "CLR" %0,%4\n" /* copy crosses next page boundary? */ + " slgr %4,%1\n" + " clgr %0,%4\n" /* copy crosses next page boundary? */ " jnh 6f\n" "4: mvcs 0(%4,%1),0(%2),%3\n" - "9:"SLR" %0,%4\n" + "9: slgr %0,%4\n" " j 6f\n" - "5:"SLR" %0,%0\n" + "5: slgr %0,%0\n" "6: sacf 768\n" EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,6b) EX_TABLE(7b,3b) EX_TABLE(8b,3b) EX_TABLE(9b,6b) @@ -208,11 +194,11 @@ static inline unsigned long copy_in_user_mvcos(void __user *to, const void __use asm volatile( "0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n" " jz 2f\n" - "1:"ALR" %0,%3\n" - " "SLR" %1,%3\n" - " "SLR" %2,%3\n" + "1: algr %0,%3\n" + " slgr %1,%3\n" + " slgr %2,%3\n" " j 0b\n" - "2:"SLR" %0,%0\n" + "2:slgr %0,%0\n" "3: \n" EX_TABLE(0b,3b) : "+a" (size), "+a" (to), "+a" (from), "+a" (tmp1), "=a" (tmp2) @@ -228,23 +214,23 @@ static inline unsigned long copy_in_user_mvc(void __user *to, const void __user load_kernel_asce(); asm volatile( " sacf 256\n" - " "AHI" %0,-1\n" + " aghi %0,-1\n" " jo 5f\n" " bras %3,3f\n" - "0:"AHI" %0,257\n" + "0: aghi %0,257\n" "1: mvc 0(1,%1),0(%2)\n" " la %1,1(%1)\n" " la %2,1(%2)\n" - " "AHI" %0,-1\n" + " aghi %0,-1\n" " jnz 1b\n" " j 5f\n" "2: mvc 0(256,%1),0(%2)\n" " la %1,256(%1)\n" " la %2,256(%2)\n" - "3:"AHI" %0,-256\n" + "3: aghi %0,-256\n" " jnm 2b\n" "4: ex %0,1b-0b(%3)\n" - "5: "SLR" %0,%0\n" + "5: slgr %0,%0\n" "6: sacf 768\n" EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b) : "+a" (size), "+a" (to), "+a" (from), "=a" (tmp1) @@ -269,18 +255,18 @@ static inline unsigned long clear_user_mvcos(void __user *to, unsigned long size asm volatile( "0: .insn ss,0xc80000000000,0(%0,%1),0(%4),0\n" " jz 4f\n" - "1:"ALR" %0,%2\n" - " "SLR" %1,%2\n" + "1: algr %0,%2\n" + " slgr %1,%2\n" " j 0b\n" "2: la %3,4095(%1)\n"/* %4 = to + 4095 */ " nr %3,%2\n" /* %4 = (to + 4095) & -4096 */ - " "SLR" %3,%1\n" - " "CLR" %0,%3\n" /* copy crosses next page boundary? */ + " 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" - " "SLR" %0,%3\n" + " slgr %0,%3\n" " j 5f\n" - "4:"SLR" %0,%0\n" + "4:slgr %0,%0\n" "5:\n" EX_TABLE(0b,2b) EX_TABLE(3b,5b) : "+a" (size), "+a" (to), "+a" (tmp1), "=a" (tmp2) @@ -295,28 +281,28 @@ static inline unsigned long clear_user_xc(void __user *to, unsigned long size) load_kernel_asce(); asm volatile( " sacf 256\n" - " "AHI" %0,-1\n" + " aghi %0,-1\n" " jo 5f\n" " bras %3,3f\n" " xc 0(1,%1),0(%1)\n" - "0:"AHI" %0,257\n" + "0: aghi %0,257\n" " la %2,255(%1)\n" /* %2 = ptr + 255 */ " srl %2,12\n" " sll %2,12\n" /* %2 = (ptr + 255) & -4096 */ - " "SLR" %2,%1\n" - " "CLR" %0,%2\n" /* clear crosses next page boundary? */ + " slgr %2,%1\n" + " clgr %0,%2\n" /* clear crosses next page boundary? */ " jnh 5f\n" - " "AHI" %2,-1\n" + " aghi %2,-1\n" "1: ex %2,0(%3)\n" - " "AHI" %2,1\n" - " "SLR" %0,%2\n" + " aghi %2,1\n" + " slgr %0,%2\n" " j 5f\n" "2: xc 0(256,%1),0(%1)\n" " la %1,256(%1)\n" - "3:"AHI" %0,-256\n" + "3: aghi %0,-256\n" " jnm 2b\n" "4: ex %0,0(%3)\n" - "5: "SLR" %0,%0\n" + "5: slgr %0,%0\n" "6: sacf 768\n" EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b) : "+a" (size), "+a" (to), "=a" (tmp1), "=a" (tmp2) @@ -341,12 +327,12 @@ static inline unsigned long strnlen_user_srst(const char __user *src, asm volatile( " la %2,0(%1)\n" " la %3,0(%0,%1)\n" - " "SLR" %0,%0\n" + " slgr %0,%0\n" " sacf 256\n" "0: srst %3,%2\n" " jo 0b\n" " la %0,1(%3)\n" /* strnlen_user results includes \0 */ - " "SLR" %0,%1\n" + " slgr %0,%1\n" "1: sacf 768\n" EX_TABLE(0b,1b) : "+a" (size), "+a" (src), "=a" (tmp1), "=a" (tmp2) @@ -399,7 +385,7 @@ early_param("uaccess_primary", parse_uaccess_pt); static int __init uaccess_init(void) { - if (IS_ENABLED(CONFIG_64BIT) && !uaccess_primary && test_facility(27)) + if (!uaccess_primary && test_facility(27)) static_key_slow_inc(&have_mvcos); return 0; } |