diff options
Diffstat (limited to 'arch/arm/mm/cache-v4wb.S')
| -rw-r--r-- | arch/arm/mm/cache-v4wb.S | 49 |
1 files changed, 25 insertions, 24 deletions
diff --git a/arch/arm/mm/cache-v4wb.S b/arch/arm/mm/cache-v4wb.S index ad382cee0f..ce55a2eef5 100644 --- a/arch/arm/mm/cache-v4wb.S +++ b/arch/arm/mm/cache-v4wb.S @@ -6,6 +6,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/page.h> #include "proc-macros.S" @@ -53,11 +54,11 @@ flush_base: * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(v4wb_flush_icache_all) +SYM_TYPED_FUNC_START(v4wb_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(v4wb_flush_icache_all) +SYM_FUNC_END(v4wb_flush_icache_all) /* * flush_user_cache_all() @@ -65,14 +66,14 @@ ENDPROC(v4wb_flush_icache_all) * Clean and invalidate all cache entries in a particular address * space. */ -ENTRY(v4wb_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(v4wb_flush_user_cache_all, v4wb_flush_kern_cache_all) + /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(v4wb_flush_kern_cache_all) +SYM_TYPED_FUNC_START(v4wb_flush_kern_cache_all) mov ip, #0 mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache __flush_whole_cache: @@ -93,6 +94,7 @@ __flush_whole_cache: #endif mcr p15, 0, ip, c7, c10, 4 @ drain write buffer ret lr +SYM_FUNC_END(v4wb_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -104,7 +106,7 @@ __flush_whole_cache: * - end - end address (exclusive, page aligned) * - flags - vma_area_struct flags describing address space */ -ENTRY(v4wb_flush_user_cache_range) +SYM_TYPED_FUNC_START(v4wb_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size tst r2, #VM_EXEC @ executable region? @@ -121,6 +123,7 @@ ENTRY(v4wb_flush_user_cache_range) tst r2, #VM_EXEC mcrne p15, 0, ip, c7, c10, 4 @ drain write buffer ret lr +SYM_FUNC_END(v4wb_flush_user_cache_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -131,9 +134,12 @@ ENTRY(v4wb_flush_user_cache_range) * - addr - kernel address * - size - region size */ -ENTRY(v4wb_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(v4wb_flush_kern_dcache_area) add r1, r0, r1 - /* fall through */ +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b v4wb_coherent_user_range +#endif +SYM_FUNC_END(v4wb_flush_kern_dcache_area) /* * coherent_kern_range(start, end) @@ -145,8 +151,11 @@ ENTRY(v4wb_flush_kern_dcache_area) * - start - virtual start address * - end - virtual end address */ -ENTRY(v4wb_coherent_kern_range) - /* fall through */ +SYM_TYPED_FUNC_START(v4wb_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b v4wb_coherent_user_range +#endif +SYM_FUNC_END(v4wb_coherent_kern_range) /* * coherent_user_range(start, end) @@ -158,7 +167,7 @@ ENTRY(v4wb_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(v4wb_coherent_user_range) +SYM_TYPED_FUNC_START(v4wb_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry @@ -169,7 +178,7 @@ ENTRY(v4wb_coherent_user_range) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr - +SYM_FUNC_END(v4wb_coherent_user_range) /* * dma_inv_range(start, end) @@ -231,13 +240,13 @@ v4wb_dma_clean_range: * - size - size of region * - dir - DMA direction */ -ENTRY(v4wb_dma_map_area) +SYM_TYPED_FUNC_START(v4wb_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq v4wb_dma_clean_range bcs v4wb_dma_inv_range b v4wb_dma_flush_range -ENDPROC(v4wb_dma_map_area) +SYM_FUNC_END(v4wb_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -245,14 +254,6 @@ ENDPROC(v4wb_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(v4wb_dma_unmap_area) +SYM_TYPED_FUNC_START(v4wb_dma_unmap_area) ret lr -ENDPROC(v4wb_dma_unmap_area) - - .globl v4wb_flush_kern_cache_louis - .equ v4wb_flush_kern_cache_louis, v4wb_flush_kern_cache_all - - __INITDATA - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions v4wb +SYM_FUNC_END(v4wb_dma_unmap_area) |