This implements emit_lock() and other closely related functions.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munte...@linux360.ro>
---
arch/x86/emit-code.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/arch/x86/emit-code.c b/arch/x86/emit-code.c
index 7b1f506..3d56581 100644
--- a/arch/x86/emit-code.c
+++ b/arch/x86/emit-code.c
@@ -2988,6 +2988,62 @@ void emit_trampoline(struct compilation_unit *cu,
jit_text_unlock();
}
+void emit_lock(struct buffer *buf, struct vm_object *obj)
+{
+ emit_save_regparm(buf);
+
+ __emit64_mov_imm_reg(buf, (unsigned long) obj, MACH_REG_RDI);
+ __emit_call(buf, vm_object_lock);
+
+ emit_restore_regparm(buf);
+
+ __emit64_push_reg(buf, MACH_REG_RAX);
+ emit_exception_test(buf, MACH_REG_RAX);
+ __emit64_pop_reg(buf, MACH_REG_RAX);
+}
+
+void emit_unlock(struct buffer *buf, struct vm_object *obj)
+{
+ __emit64_push_reg(buf, MACH_REG_RAX);
+ emit_save_regparm(buf);
+
+ __emit64_mov_imm_reg(buf, (unsigned long) obj, MACH_REG_RDI);
+ __emit_call(buf, vm_object_unlock);
+
+ emit_exception_test(buf, MACH_REG_RAX);
+
+ emit_restore_regparm(buf);
+ __emit64_pop_reg(buf, MACH_REG_RAX);
+}
+
+void emit_lock_this(struct buffer *buf)
+{
+ emit_save_regparm(buf);
+
+ /* %rdi already contains *this. */
+ __emit_call(buf, vm_object_lock);
+
+ emit_restore_regparm(buf);
+
+ __emit_push_reg(buf, MACH_REG_RAX);
+ emit_exception_test(buf, MACH_REG_RAX);
+ __emit_pop_reg(buf, MACH_REG_RAX);
+}
+
+void emit_unlock_this(struct buffer *buf)
+{
+ __emit_push_reg(buf, MACH_REG_RAX);
+ emit_save_regparm(buf);
+
+ /* %rdi already contains *this. */
+ __emit_call(buf, vm_object_unlock);
+
+ emit_exception_test(buf, MACH_REG_RAX);
+
+ emit_restore_regparm(buf);
+ __emit_pop_reg(buf, MACH_REG_RAX);
+}
+
void *emit_itable_resolver_stub(struct vm_class *vmc,
struct itable_entry **table,
unsigned int nr_entries)
--
1.6.0.6
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