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| author | Paul Mundt <lethal@linux-sh.org> | 2009-08-13 21:10:59 +0400 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-08-13 21:10:59 +0400 |
| commit | 3497447f15485b479366ec86effaac16fc82411b (patch) | |
| tree | 52369aa1441d5a4ff4fea1d175c96d63396e7224 /arch/sh/kernel/dwarf.c | |
| parent | cafb0ddac60556f7d2d4cd0ef1a93da8a6c71ffb (diff) | |
| download | linux-3497447f15485b479366ec86effaac16fc82411b.tar.xz | |
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 <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/dwarf.c')
| -rw-r--r-- | arch/sh/kernel/dwarf.c | 20 |
1 files 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 <asm/dwarf.h> #include <asm/unwinder.h> #include <asm/sections.h> -#include <asm-generic/unaligned.h> +#include <asm/unaligned.h> #include <asm/dwarf.h> #include <asm/stacktrace.h> @@ -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) { |