xtensa: support coredump by register set alignment

apache · Dec 13, 2024 · 24b3eb1 · 24b3eb1
1 parent 5cdc6c7
commit 24b3eb1
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Showing 2 changed files with 68 additions and 1 deletion.
diff --git a/arch/xtensa/include/elf.h b/arch/xtensa/include/elf.h
@@ -34,4 +34,32 @@
 #define R_XTENSA_ASM_EXPAND 11
 #define R_XTENSA_SLOT0_OP   20
 
+/* elf header of xtensa core dump */
+
+#define EM_ARCH   EM_XTENSA
+#define EF_FLAG   0
+
+/* register set to dump status */
+
+typedef uint32_t xtensa_elf_greg_t;
+typedef struct
+{
+    xtensa_elf_greg_t pc;
+    xtensa_elf_greg_t ps;
+    xtensa_elf_greg_t lbeg;
+    xtensa_elf_greg_t lend;
+    xtensa_elf_greg_t lcount;
+    xtensa_elf_greg_t sar;
+    xtensa_elf_greg_t windowstart;
+    xtensa_elf_greg_t windowbase;
+    xtensa_elf_greg_t threadptr;
+    xtensa_elf_greg_t reserved[7 + 48];
+    xtensa_elf_greg_t ar[64];
+}
+__attribute__((packed)) xtensa_gregset_t;
+
+#define XTENSA_ELF_NGREG (sizeof(xtensa_gregset_t) / sizeof(xtensa_elf_greg_t))
+
+typedef unsigned long elf_gregset_t[XTENSA_ELF_NGREG];
+
 #endif /* __ARCH_XTENSA_INCLUDE_ELF_H */
diff --git a/arch/xtensa/src/common/xtensa_tcbinfo.c b/arch/xtensa/src/common/xtensa_tcbinfo.c
@@ -38,6 +38,33 @@ static const uint16_t g_reg_offs[] =
 {
   TCB_REG_OFF(REG_PC),
   TCB_REG_OFF(REG_PS),
+#if XCHAL_HAVE_LOOPS != 0
+  TCB_REG_OFF(REG_LBEG),
+  TCB_REG_OFF(REG_LEND),
+  TCB_REG_OFF(REG_LCOUNT),
+#else
+  UINT16_MAX,
+  UINT16_MAX,
+  UINT16_MAX,
+#endif
+  TCB_REG_OFF(REG_SAR),
+  UINT16_MAX, /* windowstart */
+  UINT16_MAX, /* windowbase */
+  UINT16_MAX, /* threadptr */
+  UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, /* reserved[7 + 48] */
   TCB_REG_OFF(REG_A0),
   TCB_REG_OFF(REG_A1),
   TCB_REG_OFF(REG_A2),
@@ -53,7 +80,19 @@ static const uint16_t g_reg_offs[] =
   TCB_REG_OFF(REG_A12),
   TCB_REG_OFF(REG_A13),
   TCB_REG_OFF(REG_A14),
-  TCB_REG_OFF(REG_A15),
+  TCB_REG_OFF(REG_A15), /* ar[0:15] */
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX,
+  UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX, /* ar[16:63] */
 };
 
 /****************************************************************************