From 3497447f15485b479366ec86effaac16fc82411b Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Fri, 14 Aug 2009 02:10:59 +0900 Subject: [PATCH] sh: unwinder: Fix up usage of unaligned accessors. This was using internal symbols for unaligned accesses, bypassing the exposed interface for variable sized safe accesses. This converts all of the __get_unaligned_cpuXX() users over to get_unaligned() directly, relying on the cast to select the proper internal routine. Additionally, the __put_unaligned_cpuXX() case is superfluous given that the destination address is aligned in all of the current cases, so just drop that outright. Furthermore, this switches to the asm/unaligned.h header instead of the asm-generic version, which was silently bypassing the SH-4A optimized unaligned ops. Signed-off-by: Paul Mundt --- arch/sh/kernel/dwarf.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c index 09c6fd7fd05f..d1d8536e5ba3 100644 --- a/arch/sh/kernel/dwarf.c +++ b/arch/sh/kernel/dwarf.c @@ -21,7 +21,7 @@ #include #include #include -#include +#include #include #include @@ -87,11 +87,9 @@ static void dwarf_frame_alloc_regs(struct dwarf_frame *frame, * from @src and writing to @dst, because they can be arbitrarily * aligned. Return 'n' - the number of bytes read. */ -static inline int dwarf_read_addr(void *src, void *dst) +static inline int dwarf_read_addr(unsigned long *src, unsigned long *dst) { - u32 val = __get_unaligned_cpu32(src); - __put_unaligned_cpu32(val, dst); - + *dst = get_unaligned(src); return sizeof(unsigned long *); } @@ -207,7 +205,7 @@ static int dwarf_read_encoded_value(char *addr, unsigned long *val, case DW_EH_PE_sdata4: case DW_EH_PE_udata4: count += 4; - decoded_addr += __get_unaligned_cpu32(addr); + decoded_addr += get_unaligned((u32 *)addr); __raw_writel(decoded_addr, val); break; default: @@ -232,7 +230,7 @@ static inline int dwarf_entry_len(char *addr, unsigned long *len) u32 initial_len; int count; - initial_len = __get_unaligned_cpu32(addr); + initial_len = get_unaligned((u32 *)addr); count = 4; /* @@ -247,7 +245,7 @@ static inline int dwarf_entry_len(char *addr, unsigned long *len) * compulsory 32-bit length field. */ if (initial_len == DW_EXT_DWARF64) { - *len = __get_unaligned_cpu64(addr + 4); + *len = get_unaligned((u64 *)addr + 4); count = 12; } else { printk(KERN_WARNING "Unknown DWARF extension\n"); @@ -392,12 +390,12 @@ static int dwarf_cfa_execute_insns(unsigned char *insn_start, frame->pc += delta * cie->code_alignment_factor; break; case DW_CFA_advance_loc2: - delta = __get_unaligned_cpu16(current_insn); + delta = get_unaligned((u16 *)current_insn); current_insn += 2; frame->pc += delta * cie->code_alignment_factor; break; case DW_CFA_advance_loc4: - delta = __get_unaligned_cpu32(current_insn); + delta = get_unaligned((u32 *)current_insn); current_insn += 4; frame->pc += delta * cie->code_alignment_factor; break; @@ -841,7 +839,7 @@ void dwarf_unwinder_init(void) /* initial length does not include itself */ end = p + len; - entry_type = __get_unaligned_cpu32(p); + entry_type = get_unaligned((u32 *)p); p += 4; if (entry_type == DW_EH_FRAME_CIE) { -- 2.20.1