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-rw-r--r--c/src/lib/librdbg/i386/rdbg_cpu_asm.S70
1 files changed, 70 insertions, 0 deletions
diff --git a/c/src/lib/librdbg/i386/rdbg_cpu_asm.S b/c/src/lib/librdbg/i386/rdbg_cpu_asm.S
new file mode 100644
index 0000000000..f0942310ce
--- /dev/null
+++ b/c/src/lib/librdbg/i386/rdbg_cpu_asm.S
@@ -0,0 +1,70 @@
+/* cpu_asm.s
+ *
+ * This file contains all assembly code for the Intel i386 implementation
+ * of RDBG.
+ *
+ */
+
+#include <asm.h>
+
+ BEGIN_CODE
+
+/*
+ * void copyback_data_cache_and_invalidate_instr_cache()
+ *
+ * This routine performs a copy of the data cache
+ * and invalidate the instruction cache
+ */
+
+ .p2align 1
+ PUBLIC (copyback_data_cache_and_invalidate_instr_cache)
+
+SYM (copyback_data_cache_and_invalidate_instr_cache):
+ wbinvd
+ ret
+
+
+
+/*
+ * void enterRdbg(void)
+ *
+ * This function perform a call to the exception 19
+ * It is used :
+ * 1 - in the user code, to simulate a Breakpoint.
+ * (with justSaveContext = 0)
+ * 2 - in the RDBG code, to push a ctx in the list.
+ * (with justSaveContext = 1)
+ *
+ * In most of case, it will be use as described in 1.
+ * The 2nd possibility will be used by RDBG to obtain
+ * its own ctx
+ */
+
+ PUBLIC (enterRdbg)
+
+SYM (enterRdbg):
+ int $50
+ ret
+
+
+/*
+ * void rtems_exception_prologue_50(void)
+ *
+ * Exception 50 is used to enter Rdbg
+ *
+ */
+
+ .p2align 4
+
+ PUBLIC (rtems_exception_prologue_50)
+ PUBLIC (_Exception_Handler)
+
+SYM (rtems_exception_prologue_50):
+ pushl $ 0
+ pushl $ 50
+ jmp SYM(_Exception_Handler) ;
+
+
+END_CODE
+
+END