diff options
Diffstat (limited to 'arch/mn10300/mm')
| -rw-r--r-- | arch/mn10300/mm/misalignment.c | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/arch/mn10300/mm/misalignment.c b/arch/mn10300/mm/misalignment.c index a59836804bc..e247a6e1b8d 100644 --- a/arch/mn10300/mm/misalignment.c +++ b/arch/mn10300/mm/misalignment.c @@ -42,8 +42,9 @@ #define kdebug(FMT, ...) do {} while (0) #endif -static int misalignment_addr(unsigned long *registers, unsigned params, - unsigned opcode, unsigned long disp, +static int misalignment_addr(unsigned long *registers, unsigned long sp, + unsigned params, unsigned opcode, + unsigned long disp, void **_address, unsigned long **_postinc, unsigned long *_inc); @@ -322,7 +323,7 @@ asmlinkage void misalignment(struct pt_regs *regs, enum exception_code code) const struct exception_table_entry *fixup; const struct mn10300_opcode *pop; unsigned long *registers = (unsigned long *) regs; - unsigned long data, *store, *postinc, disp, inc; + unsigned long data, *store, *postinc, disp, inc, sp; mm_segment_t seg; siginfo_t info; uint32_t opcode, noc, xo, xm; @@ -330,7 +331,12 @@ asmlinkage void misalignment(struct pt_regs *regs, enum exception_code code) void *address; unsigned tmp, npop, dispsz, loop; - kdebug("==>misalignment({pc=%lx})", regs->pc); + if (user_mode(regs)) + sp = regs->sp; + else + sp = (unsigned long) regs + sizeof(*regs); + + kdebug("==>misalignment({pc=%lx,sp=%lx})", regs->pc, sp); if (regs->epsw & EPSW_IE) asm volatile("or %0,epsw" : : "i"(EPSW_IE)); @@ -496,7 +502,8 @@ found_opcode: if (pop->params[0] & 0x80000000) { /* move memory to register */ - if (!misalignment_addr(registers, pop->params[0], opcode, disp, + if (!misalignment_addr(registers, sp, + pop->params[0], opcode, disp, &address, &postinc, &inc)) goto bad_addr_mode; @@ -520,7 +527,8 @@ found_opcode: &store)) goto bad_reg_mode; - if (!misalignment_addr(registers, pop->params[1], opcode, disp, + if (!misalignment_addr(registers, sp, + pop->params[1], opcode, disp, &address, &postinc, &inc)) goto bad_addr_mode; @@ -548,8 +556,9 @@ found_opcode: /* * determine the address that was being accessed */ -static int misalignment_addr(unsigned long *registers, unsigned params, - unsigned opcode, unsigned long disp, +static int misalignment_addr(unsigned long *registers, unsigned long sp, + unsigned params, unsigned opcode, + unsigned long disp, void **_address, unsigned long **_postinc, unsigned long *_inc) { @@ -618,7 +627,7 @@ static int misalignment_addr(unsigned long *registers, unsigned params, address += *postinc; break; case SP: - address += registers[REG_SP >> 2]; + address += sp; break; /* displacements are either to be added to the address @@ -642,6 +651,12 @@ static int misalignment_addr(unsigned long *registers, unsigned params, asm("asr 28,%0" : "=r"(tmp) : "0"(tmp)); disp = (long) tmp; goto displace_or_inc; + case IMM8: + disp &= 0x000000ff; + goto displace_or_inc; + case IMM16: + disp &= 0x0000ffff; + goto displace_or_inc; case IMM24: disp &= 0x00ffffff; goto displace_or_inc; |