zyfeier commented on code in PR #21496:
URL: https://github.com/apache/nuttx/pull/21496#discussion_r4490151536
##########
arch/tricore/src/common/tricore_trapcall.c:
##########
@@ -39,13 +39,92 @@
#include "tricore_internal.h"
-#include "IfxCpu_Trap.h"
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Trap classes and trap identification numbers (TIN), as named in the
+ * TriCore architecture manual.
+ */
+
+#define TRICORE_TRAP_CLASS_MMU 0 /* Memory management */
+#define TRICORE_TRAP_CLASS_PROT 1 /* Internal protection */
+#define TRICORE_TRAP_CLASS_INSN 2 /* Instruction errors */
+#define TRICORE_TRAP_CLASS_CTX 3 /* Context management */
+#define TRICORE_TRAP_CLASS_BUS 4 /* System bus and peripheral errors */
+#define TRICORE_TRAP_CLASS_ASSERT 5 /* Assertion */
+#define TRICORE_TRAP_CLASS_NMI 7 /* Non-maskable interrupt */
+
+#define TRICORE_TIN_VAF 0 /* Class 0: virtual address fill */
+#define TRICORE_TIN_VAP 1 /* Class 0: virtual addr protection */
+
+#define TRICORE_TIN_PRIV 1 /* Class 1: privilege violation */
+#define TRICORE_TIN_MPR 2 /* Class 1: protection read */
+#define TRICORE_TIN_MPW 3 /* Class 1: protection write */
+#define TRICORE_TIN_MPX 4 /* Class 1: protection execute */
+#define TRICORE_TIN_MPP 5 /* Class 1: peripheral access */
+#define TRICORE_TIN_MPN 6 /* Class 1: null address */
+#define TRICORE_TIN_GRWP 7 /* Class 1: global register write */
+
+#define TRICORE_TIN_IOPC 1 /* Class 2: illegal opcode */
+#define TRICORE_TIN_UOPC 2 /* Class 2: unimplemented opcode */
+#define TRICORE_TIN_OPD 3 /* Class 2: invalid operand */
+#define TRICORE_TIN_ALN 4 /* Class 2: data address alignment */
+#define TRICORE_TIN_MEM 5 /* Class 2: invalid local memory */
+#define TRICORE_TIN_CSE 6 /* Class 2: coprocessor synchronous */
+
+#define TRICORE_TIN_FCD 1 /* Class 3: free context depletion */
+#define TRICORE_TIN_CDO 2 /* Class 3: call depth overflow */
+#define TRICORE_TIN_CDU 3 /* Class 3: call depth underflow */
+#define TRICORE_TIN_FCU 4 /* Class 3: free context underflow */
+#define TRICORE_TIN_CSU 5 /* Class 3: call stack underflow */
+#define TRICORE_TIN_CTYP 6 /* Class 3: context type error */
+#define TRICORE_TIN_NEST 7 /* Class 3: nesting error */
+
+#define TRICORE_TIN_PSE 1 /* Class 4: program fetch synchronous */
+#define TRICORE_TIN_DSE 2 /* Class 4: data access synchronous */
+#define TRICORE_TIN_DAE 3 /* Class 4: data access asynchronous */
+#define TRICORE_TIN_CAE 4 /* Class 4: coprocessor asynchronous */
+#define TRICORE_TIN_PIE 5 /* Class 4: program memory integrity */
+#define TRICORE_TIN_DIE 6 /* Class 4: data memory integrity */
+#define TRICORE_TIN_TAE 7 /* Class 4: temporal asynchronous */
+
+#define TRICORE_TIN_OVF 1 /* Class 5: arithmetic overflow */
+#define TRICORE_TIN_SOVF 2 /* Class 5: sticky overflow */
+
+/* The trap vectors enter tricore_trapcall() with jli, return with ji */
+
+#ifdef CONFIG_TRICORE_TOOLCHAIN_TASKING
+# define tricore_trap_return() __asm__ volatile ("ji a11" : : : "a11")
+#else
+# define tricore_trap_return() __asm__ volatile ("ji %a11")
+#endif
+
+/* Smallest FCU pool: two CSAs for the trapped context, the rest for the
+ * panic path.
+ */
+
+#define TRICORE_FCU_CSA_MINNUM 20
Review Comment:
If CONFIG_TRICORE_FCU_CSA_NUM is defined, this macro is not needed.
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