mirror of https://gitee.com/openkylin/linux.git
[SPARC]: Fix link errors with gcc-4.3
Reported by Adrian Bunk.
Just like in changeset a3f9985843
("[SPARC64]: Move kernel unaligned trap handlers into assembler
file.") we have to move the assembler bits into a seperate
asm file because as far as the compiler is concerned
these inline bits we're doing in unaligned.c are unreachable.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
parent
9a4a668240
commit
f0e98c387e
|
|
@ -1,4 +1,4 @@
|
|||
# $Id: Makefile,v 1.62 2000/12/15 00:41:17 davem Exp $
|
||||
#
|
||||
# Makefile for the linux kernel.
|
||||
#
|
||||
|
||||
|
|
@ -12,7 +12,8 @@ obj-y := entry.o wof.o wuf.o etrap.o rtrap.o traps.o $(IRQ_OBJS) \
|
|||
sys_sparc.o sunos_asm.o systbls.o \
|
||||
time.o windows.o cpu.o devices.o sclow.o \
|
||||
tadpole.o tick14.o ptrace.o sys_solaris.o \
|
||||
unaligned.o muldiv.o semaphore.o prom.o of_device.o devres.o
|
||||
unaligned.o una_asm.o muldiv.o semaphore.o \
|
||||
prom.o of_device.o devres.o
|
||||
|
||||
devres-y = ../../../kernel/irq/devres.o
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,153 @@
|
|||
/* una_asm.S: Kernel unaligned trap assembler helpers.
|
||||
*
|
||||
* Copyright (C) 1996,2005,2008 David S. Miller (davem@davemloft.net)
|
||||
* Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
|
||||
*/
|
||||
|
||||
#include <linux/errno.h>
|
||||
|
||||
.text
|
||||
|
||||
retl_efault:
|
||||
retl
|
||||
mov -EFAULT, %o0
|
||||
|
||||
/* int __do_int_store(unsigned long *dst_addr, int size,
|
||||
* unsigned long *src_val)
|
||||
*
|
||||
* %o0 = dest_addr
|
||||
* %o1 = size
|
||||
* %o2 = src_val
|
||||
*
|
||||
* Return '0' on success, -EFAULT on failure.
|
||||
*/
|
||||
.globl __do_int_store
|
||||
__do_int_store:
|
||||
ld [%o2], %g1
|
||||
cmp %1, 2
|
||||
be 2f
|
||||
cmp %1, 4
|
||||
be 1f
|
||||
srl %g1, 24, %g2
|
||||
srl %g1, 16, %g7
|
||||
4: stb %g2, [%o0]
|
||||
srl %g1, 8, %g2
|
||||
5: stb %g7, [%o0 + 1]
|
||||
ld [%o2 + 4], %g7
|
||||
6: stb %g2, [%o0 + 2]
|
||||
srl %g7, 24, %g2
|
||||
7: stb %g1, [%o0 + 3]
|
||||
srl %g7, 16, %g1
|
||||
8: stb %g2, [%o0 + 4]
|
||||
srl %g7, 8, %g2
|
||||
9: stb %g1, [%o0 + 5]
|
||||
10: stb %g2, [%o0 + 6]
|
||||
b 0f
|
||||
11: stb %g7, [%o0 + 7]
|
||||
1: srl %g1, 16, %g7
|
||||
12: stb %g2, [%o0]
|
||||
srl %g1, 8, %g2
|
||||
13: stb %g7, [%o0 + 1]
|
||||
14: stb %g2, [%o0 + 2]
|
||||
b 0f
|
||||
15: stb %g1, [%o0 + 3]
|
||||
2: srl %g1, 8, %g2
|
||||
16: stb %g2, [%o0]
|
||||
17: stb %g1, [%o0 + 1]
|
||||
0: retl
|
||||
mov 0, %o0
|
||||
|
||||
.section __ex_table,#alloc
|
||||
.word 4b, retl_efault
|
||||
.word 5b, retl_efault
|
||||
.word 6b, retl_efault
|
||||
.word 7b, retl_efault
|
||||
.word 8b, retl_efault
|
||||
.word 9b, retl_efault
|
||||
.word 10b, retl_efault
|
||||
.word 11b, retl_efault
|
||||
.word 12b, retl_efault
|
||||
.word 13b, retl_efault
|
||||
.word 14b, retl_efault
|
||||
.word 15b, retl_efault
|
||||
.word 16b, retl_efault
|
||||
.word 17b, retl_efault
|
||||
.previous
|
||||
|
||||
/* int do_int_load(unsigned long *dest_reg, int size,
|
||||
* unsigned long *saddr, int is_signed)
|
||||
*
|
||||
* %o0 = dest_reg
|
||||
* %o1 = size
|
||||
* %o2 = saddr
|
||||
* %o3 = is_signed
|
||||
*
|
||||
* Return '0' on success, -EFAULT on failure.
|
||||
*/
|
||||
.globl do_int_load
|
||||
do_int_load:
|
||||
cmp %o1, 8
|
||||
be 9f
|
||||
cmp %o1, 4
|
||||
be 6f
|
||||
4: ldub [%o2], %g1
|
||||
5: ldub [%o2 + 1], %g2
|
||||
sll %g1, 8, %g1
|
||||
tst %o3
|
||||
be 3f
|
||||
or %g1, %g2, %g1
|
||||
sll %g1, 16, %g1
|
||||
sra %g1, 16, %g1
|
||||
3: b 0f
|
||||
st %g1, [%o0]
|
||||
6: ldub [%o2 + 1], %g2
|
||||
sll %g1, 24, %g1
|
||||
7: ldub [%o2 + 2], %g7
|
||||
sll %g2, 16, %g2
|
||||
8: ldub [%o2 + 3], %g3
|
||||
sll %g7, 8, %g7
|
||||
or %g3, %g2, %g3
|
||||
or %g7, %g3, %g7
|
||||
or %g1, %g7, %g1
|
||||
b 0f
|
||||
st %g1, [%o0]
|
||||
9: ldub [%o2], %g1
|
||||
10: ldub [%o2 + 1], %g2
|
||||
sll %g1, 24, %g1
|
||||
11: ldub [%o2 + 2], %g7
|
||||
sll %g2, 16, %g2
|
||||
12: ldub [%o2 + 3], %g3
|
||||
sll %g7, 8, %g7
|
||||
or %g1, %g2, %g1
|
||||
or %g7, %g3, %g7
|
||||
or %g1, %g7, %g7
|
||||
13: ldub [%o2 + 4], %g1
|
||||
st %g7, [%o0]
|
||||
14: ldub [%o2 + 5], %g2
|
||||
sll %g1, 24, %g1
|
||||
15: ldub [%o2 + 6], %g7
|
||||
sll %g2, 16, %g2
|
||||
16: ldub [%o2 + 7], %g3
|
||||
sll %g7, 8, %g7
|
||||
or %g1, %g2, %g1
|
||||
or %g7, %g3, %g7
|
||||
or %g1, %g7, %g7
|
||||
st %g7, [%o0 + 4]
|
||||
0: retl
|
||||
mov 0, %o0
|
||||
|
||||
.section __ex_table,#alloc
|
||||
.word 4b, retl_efault
|
||||
.word 5b, retl_efault
|
||||
.word 6b, retl_efault
|
||||
.word 7b, retl_efault
|
||||
.word 8b, retl_efault
|
||||
.word 9b, retl_efault
|
||||
.word 10b, retl_efault
|
||||
.word 11b, retl_efault
|
||||
.word 12b, retl_efault
|
||||
.word 13b, retl_efault
|
||||
.word 14b, retl_efault
|
||||
.word 15b, retl_efault
|
||||
.word 16b, retl_efault
|
||||
.previous
|
||||
|
|
@ -175,157 +175,31 @@ static void unaligned_panic(char *str)
|
|||
panic(str);
|
||||
}
|
||||
|
||||
#define do_integer_load(dest_reg, size, saddr, is_signed, errh) ({ \
|
||||
__asm__ __volatile__ ( \
|
||||
"cmp %1, 8\n\t" \
|
||||
"be 9f\n\t" \
|
||||
" cmp %1, 4\n\t" \
|
||||
"be 6f\n" \
|
||||
"4:\t" " ldub [%2], %%l1\n" \
|
||||
"5:\t" "ldub [%2 + 1], %%l2\n\t" \
|
||||
"sll %%l1, 8, %%l1\n\t" \
|
||||
"tst %3\n\t" \
|
||||
"be 3f\n\t" \
|
||||
" add %%l1, %%l2, %%l1\n\t" \
|
||||
"sll %%l1, 16, %%l1\n\t" \
|
||||
"sra %%l1, 16, %%l1\n" \
|
||||
"3:\t" "b 0f\n\t" \
|
||||
" st %%l1, [%0]\n" \
|
||||
"6:\t" "ldub [%2 + 1], %%l2\n\t" \
|
||||
"sll %%l1, 24, %%l1\n" \
|
||||
"7:\t" "ldub [%2 + 2], %%g7\n\t" \
|
||||
"sll %%l2, 16, %%l2\n" \
|
||||
"8:\t" "ldub [%2 + 3], %%g1\n\t" \
|
||||
"sll %%g7, 8, %%g7\n\t" \
|
||||
"or %%l1, %%l2, %%l1\n\t" \
|
||||
"or %%g7, %%g1, %%g7\n\t" \
|
||||
"or %%l1, %%g7, %%l1\n\t" \
|
||||
"b 0f\n\t" \
|
||||
" st %%l1, [%0]\n" \
|
||||
"9:\t" "ldub [%2], %%l1\n" \
|
||||
"10:\t" "ldub [%2 + 1], %%l2\n\t" \
|
||||
"sll %%l1, 24, %%l1\n" \
|
||||
"11:\t" "ldub [%2 + 2], %%g7\n\t" \
|
||||
"sll %%l2, 16, %%l2\n" \
|
||||
"12:\t" "ldub [%2 + 3], %%g1\n\t" \
|
||||
"sll %%g7, 8, %%g7\n\t" \
|
||||
"or %%l1, %%l2, %%l1\n\t" \
|
||||
"or %%g7, %%g1, %%g7\n\t" \
|
||||
"or %%l1, %%g7, %%g7\n" \
|
||||
"13:\t" "ldub [%2 + 4], %%l1\n\t" \
|
||||
"st %%g7, [%0]\n" \
|
||||
"14:\t" "ldub [%2 + 5], %%l2\n\t" \
|
||||
"sll %%l1, 24, %%l1\n" \
|
||||
"15:\t" "ldub [%2 + 6], %%g7\n\t" \
|
||||
"sll %%l2, 16, %%l2\n" \
|
||||
"16:\t" "ldub [%2 + 7], %%g1\n\t" \
|
||||
"sll %%g7, 8, %%g7\n\t" \
|
||||
"or %%l1, %%l2, %%l1\n\t" \
|
||||
"or %%g7, %%g1, %%g7\n\t" \
|
||||
"or %%l1, %%g7, %%g7\n\t" \
|
||||
"st %%g7, [%0 + 4]\n" \
|
||||
"0:\n\n\t" \
|
||||
".section __ex_table,#alloc\n\t" \
|
||||
".word 4b, " #errh "\n\t" \
|
||||
".word 5b, " #errh "\n\t" \
|
||||
".word 6b, " #errh "\n\t" \
|
||||
".word 7b, " #errh "\n\t" \
|
||||
".word 8b, " #errh "\n\t" \
|
||||
".word 9b, " #errh "\n\t" \
|
||||
".word 10b, " #errh "\n\t" \
|
||||
".word 11b, " #errh "\n\t" \
|
||||
".word 12b, " #errh "\n\t" \
|
||||
".word 13b, " #errh "\n\t" \
|
||||
".word 14b, " #errh "\n\t" \
|
||||
".word 15b, " #errh "\n\t" \
|
||||
".word 16b, " #errh "\n\n\t" \
|
||||
".previous\n\t" \
|
||||
: : "r" (dest_reg), "r" (size), "r" (saddr), "r" (is_signed) \
|
||||
: "l1", "l2", "g7", "g1", "cc"); \
|
||||
})
|
||||
|
||||
#define store_common(dst_addr, size, src_val, errh) ({ \
|
||||
__asm__ __volatile__ ( \
|
||||
"ld [%2], %%l1\n" \
|
||||
"cmp %1, 2\n\t" \
|
||||
"be 2f\n\t" \
|
||||
" cmp %1, 4\n\t" \
|
||||
"be 1f\n\t" \
|
||||
" srl %%l1, 24, %%l2\n\t" \
|
||||
"srl %%l1, 16, %%g7\n" \
|
||||
"4:\t" "stb %%l2, [%0]\n\t" \
|
||||
"srl %%l1, 8, %%l2\n" \
|
||||
"5:\t" "stb %%g7, [%0 + 1]\n\t" \
|
||||
"ld [%2 + 4], %%g7\n" \
|
||||
"6:\t" "stb %%l2, [%0 + 2]\n\t" \
|
||||
"srl %%g7, 24, %%l2\n" \
|
||||
"7:\t" "stb %%l1, [%0 + 3]\n\t" \
|
||||
"srl %%g7, 16, %%l1\n" \
|
||||
"8:\t" "stb %%l2, [%0 + 4]\n\t" \
|
||||
"srl %%g7, 8, %%l2\n" \
|
||||
"9:\t" "stb %%l1, [%0 + 5]\n" \
|
||||
"10:\t" "stb %%l2, [%0 + 6]\n\t" \
|
||||
"b 0f\n" \
|
||||
"11:\t" " stb %%g7, [%0 + 7]\n" \
|
||||
"1:\t" "srl %%l1, 16, %%g7\n" \
|
||||
"12:\t" "stb %%l2, [%0]\n\t" \
|
||||
"srl %%l1, 8, %%l2\n" \
|
||||
"13:\t" "stb %%g7, [%0 + 1]\n" \
|
||||
"14:\t" "stb %%l2, [%0 + 2]\n\t" \
|
||||
"b 0f\n" \
|
||||
"15:\t" " stb %%l1, [%0 + 3]\n" \
|
||||
"2:\t" "srl %%l1, 8, %%l2\n" \
|
||||
"16:\t" "stb %%l2, [%0]\n" \
|
||||
"17:\t" "stb %%l1, [%0 + 1]\n" \
|
||||
"0:\n\n\t" \
|
||||
".section __ex_table,#alloc\n\t" \
|
||||
".word 4b, " #errh "\n\t" \
|
||||
".word 5b, " #errh "\n\t" \
|
||||
".word 6b, " #errh "\n\t" \
|
||||
".word 7b, " #errh "\n\t" \
|
||||
".word 8b, " #errh "\n\t" \
|
||||
".word 9b, " #errh "\n\t" \
|
||||
".word 10b, " #errh "\n\t" \
|
||||
".word 11b, " #errh "\n\t" \
|
||||
".word 12b, " #errh "\n\t" \
|
||||
".word 13b, " #errh "\n\t" \
|
||||
".word 14b, " #errh "\n\t" \
|
||||
".word 15b, " #errh "\n\t" \
|
||||
".word 16b, " #errh "\n\t" \
|
||||
".word 17b, " #errh "\n\n\t" \
|
||||
".previous\n\t" \
|
||||
: : "r" (dst_addr), "r" (size), "r" (src_val) \
|
||||
: "l1", "l2", "g7", "g1", "cc"); \
|
||||
})
|
||||
/* una_asm.S */
|
||||
extern int do_int_load(unsigned long *dest_reg, int size,
|
||||
unsigned long *saddr, int is_signed);
|
||||
extern int __do_int_store(unsigned long *dst_addr, int size,
|
||||
unsigned long *src_val);
|
||||
|
||||
#define do_integer_store(reg_num, size, dst_addr, regs, errh) ({ \
|
||||
unsigned long *src_val; \
|
||||
static unsigned long zero[2] = { 0, }; \
|
||||
\
|
||||
if (reg_num) src_val = fetch_reg_addr(reg_num, regs); \
|
||||
else { \
|
||||
src_val = &zero[0]; \
|
||||
if (size == 8) \
|
||||
zero[1] = fetch_reg(1, regs); \
|
||||
} \
|
||||
store_common(dst_addr, size, src_val, errh); \
|
||||
})
|
||||
static int do_int_store(int reg_num, int size, unsigned long *dst_addr,
|
||||
struct pt_regs *regs)
|
||||
{
|
||||
unsigned long zero[2] = { 0, 0 };
|
||||
unsigned long *src_val;
|
||||
|
||||
if (reg_num)
|
||||
src_val = fetch_reg_addr(reg_num, regs);
|
||||
else {
|
||||
src_val = &zero[0];
|
||||
if (size == 8)
|
||||
zero[1] = fetch_reg(1, regs);
|
||||
}
|
||||
return __do_int_store(dst_addr, size, src_val);
|
||||
}
|
||||
|
||||
extern void smp_capture(void);
|
||||
extern void smp_release(void);
|
||||
|
||||
#define do_atomic(srcdest_reg, mem, errh) ({ \
|
||||
unsigned long flags, tmp; \
|
||||
\
|
||||
smp_capture(); \
|
||||
local_irq_save(flags); \
|
||||
tmp = *srcdest_reg; \
|
||||
do_integer_load(srcdest_reg, 4, mem, 0, errh); \
|
||||
store_common(mem, 4, &tmp, errh); \
|
||||
local_irq_restore(flags); \
|
||||
smp_release(); \
|
||||
})
|
||||
|
||||
static inline void advance(struct pt_regs *regs)
|
||||
{
|
||||
regs->pc = regs->npc;
|
||||
|
|
@ -342,9 +216,7 @@ static inline int ok_for_kernel(unsigned int insn)
|
|||
return !floating_point_load_or_store_p(insn);
|
||||
}
|
||||
|
||||
void kernel_mna_trap_fault(struct pt_regs *regs, unsigned int insn) __asm__ ("kernel_mna_trap_fault");
|
||||
|
||||
void kernel_mna_trap_fault(struct pt_regs *regs, unsigned int insn)
|
||||
static void kernel_mna_trap_fault(struct pt_regs *regs, unsigned int insn)
|
||||
{
|
||||
unsigned long g2 = regs->u_regs [UREG_G2];
|
||||
unsigned long fixup = search_extables_range(regs->pc, &g2);
|
||||
|
|
@ -379,48 +251,34 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
|
|||
printk("Unsupported unaligned load/store trap for kernel at <%08lx>.\n",
|
||||
regs->pc);
|
||||
unaligned_panic("Wheee. Kernel does fpu/atomic unaligned load/store.");
|
||||
|
||||
__asm__ __volatile__ ("\n"
|
||||
"kernel_unaligned_trap_fault:\n\t"
|
||||
"mov %0, %%o0\n\t"
|
||||
"call kernel_mna_trap_fault\n\t"
|
||||
" mov %1, %%o1\n\t"
|
||||
:
|
||||
: "r" (regs), "r" (insn)
|
||||
: "o0", "o1", "o2", "o3", "o4", "o5", "o7",
|
||||
"g1", "g2", "g3", "g4", "g5", "g7", "cc");
|
||||
} else {
|
||||
unsigned long addr = compute_effective_address(regs, insn);
|
||||
int err;
|
||||
|
||||
#ifdef DEBUG_MNA
|
||||
printk("KMNA: pc=%08lx [dir=%s addr=%08lx size=%d] retpc[%08lx]\n",
|
||||
regs->pc, dirstrings[dir], addr, size, regs->u_regs[UREG_RETPC]);
|
||||
#endif
|
||||
switch(dir) {
|
||||
switch (dir) {
|
||||
case load:
|
||||
do_integer_load(fetch_reg_addr(((insn>>25)&0x1f), regs),
|
||||
size, (unsigned long *) addr,
|
||||
decode_signedness(insn),
|
||||
kernel_unaligned_trap_fault);
|
||||
err = do_int_load(fetch_reg_addr(((insn>>25)&0x1f),
|
||||
regs),
|
||||
size, (unsigned long *) addr,
|
||||
decode_signedness(insn));
|
||||
break;
|
||||
|
||||
case store:
|
||||
do_integer_store(((insn>>25)&0x1f), size,
|
||||
(unsigned long *) addr, regs,
|
||||
kernel_unaligned_trap_fault);
|
||||
err = do_int_store(((insn>>25)&0x1f), size,
|
||||
(unsigned long *) addr, regs);
|
||||
break;
|
||||
#if 0 /* unsupported */
|
||||
case both:
|
||||
do_atomic(fetch_reg_addr(((insn>>25)&0x1f), regs),
|
||||
(unsigned long *) addr,
|
||||
kernel_unaligned_trap_fault);
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
panic("Impossible kernel unaligned trap.");
|
||||
/* Not reached... */
|
||||
}
|
||||
advance(regs);
|
||||
if (err)
|
||||
kernel_mna_trap_fault(regs, insn);
|
||||
else
|
||||
advance(regs);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -459,9 +317,7 @@ static inline int ok_for_user(struct pt_regs *regs, unsigned int insn,
|
|||
return 0;
|
||||
}
|
||||
|
||||
void user_mna_trap_fault(struct pt_regs *regs, unsigned int insn) __asm__ ("user_mna_trap_fault");
|
||||
|
||||
void user_mna_trap_fault(struct pt_regs *regs, unsigned int insn)
|
||||
static void user_mna_trap_fault(struct pt_regs *regs, unsigned int insn)
|
||||
{
|
||||
siginfo_t info;
|
||||
|
||||
|
|
@ -485,7 +341,7 @@ asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn)
|
|||
if(!ok_for_user(regs, insn, dir)) {
|
||||
goto kill_user;
|
||||
} else {
|
||||
int size = decode_access_size(insn);
|
||||
int err, size = decode_access_size(insn);
|
||||
unsigned long addr;
|
||||
|
||||
if(floating_point_load_or_store_p(insn)) {
|
||||
|
|
@ -496,48 +352,34 @@ asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn)
|
|||
addr = compute_effective_address(regs, insn);
|
||||
switch(dir) {
|
||||
case load:
|
||||
do_integer_load(fetch_reg_addr(((insn>>25)&0x1f), regs),
|
||||
size, (unsigned long *) addr,
|
||||
decode_signedness(insn),
|
||||
user_unaligned_trap_fault);
|
||||
err = do_int_load(fetch_reg_addr(((insn>>25)&0x1f),
|
||||
regs),
|
||||
size, (unsigned long *) addr,
|
||||
decode_signedness(insn));
|
||||
break;
|
||||
|
||||
case store:
|
||||
do_integer_store(((insn>>25)&0x1f), size,
|
||||
(unsigned long *) addr, regs,
|
||||
user_unaligned_trap_fault);
|
||||
err = do_int_store(((insn>>25)&0x1f), size,
|
||||
(unsigned long *) addr, regs);
|
||||
break;
|
||||
|
||||
case both:
|
||||
#if 0 /* unsupported */
|
||||
do_atomic(fetch_reg_addr(((insn>>25)&0x1f), regs),
|
||||
(unsigned long *) addr,
|
||||
user_unaligned_trap_fault);
|
||||
#else
|
||||
/*
|
||||
* This was supported in 2.4. However, we question
|
||||
* the value of SWAP instruction across word boundaries.
|
||||
*/
|
||||
printk("Unaligned SWAP unsupported.\n");
|
||||
goto kill_user;
|
||||
#endif
|
||||
err = -EFAULT;
|
||||
break;
|
||||
|
||||
default:
|
||||
unaligned_panic("Impossible user unaligned trap.");
|
||||
|
||||
__asm__ __volatile__ ("\n"
|
||||
"user_unaligned_trap_fault:\n\t"
|
||||
"mov %0, %%o0\n\t"
|
||||
"call user_mna_trap_fault\n\t"
|
||||
" mov %1, %%o1\n\t"
|
||||
:
|
||||
: "r" (regs), "r" (insn)
|
||||
: "o0", "o1", "o2", "o3", "o4", "o5", "o7",
|
||||
"g1", "g2", "g3", "g4", "g5", "g7", "cc");
|
||||
goto out;
|
||||
}
|
||||
advance(regs);
|
||||
if (err)
|
||||
goto kill_user;
|
||||
else
|
||||
advance(regs);
|
||||
goto out;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue