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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mm/proc-macros.S
downloadlinux-stericsson-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm/mm/proc-macros.S')
-rw-r--r--arch/arm/mm/proc-macros.S51
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S
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+/*
+ * We need constants.h for:
+ * VMA_VM_MM
+ * VMA_VM_FLAGS
+ * VM_EXEC
+ */
+#include <asm/constants.h>
+#include <asm/thread_info.h>
+
+/*
+ * vma_vm_mm - get mm pointer from vma pointer (vma->vm_mm)
+ */
+ .macro vma_vm_mm, rd, rn
+ ldr \rd, [\rn, #VMA_VM_MM]
+ .endm
+
+/*
+ * vma_vm_flags - get vma->vm_flags
+ */
+ .macro vma_vm_flags, rd, rn
+ ldr \rd, [\rn, #VMA_VM_FLAGS]
+ .endm
+
+ .macro tsk_mm, rd, rn
+ ldr \rd, [\rn, #TI_TASK]
+ ldr \rd, [\rd, #TSK_ACTIVE_MM]
+ .endm
+
+/*
+ * act_mm - get current->active_mm
+ */
+ .macro act_mm, rd
+ bic \rd, sp, #8128
+ bic \rd, \rd, #63
+ ldr \rd, [\rd, #TI_TASK]
+ ldr \rd, [\rd, #TSK_ACTIVE_MM]
+ .endm
+
+/*
+ * mmid - get context id from mm pointer (mm->context.id)
+ */
+ .macro mmid, rd, rn
+ ldr \rd, [\rn, #MM_CONTEXT_ID]
+ .endm
+
+/*
+ * mask_asid - mask the ASID from the context ID
+ */
+ .macro asid, rd, rn
+ and \rd, \rn, #255
+ .endm