[Minios-devel] [PATCH v2 11/47] arm64: dump the registers for do_bad_mode()/do_sync()

[Huang Shijie <shijie.huang@xxxxxxx>]

This patch adds a new function dump_regs() which can dump the registers
information.

And the do_bad_mode()/do_sync() will use the function to dump the
registers.

This patch refers to Volodymyr Babchuk's patch:
  "WIP: trap.c: add trap handles for arm64"

Signed-off-by: Huang Shijie <shijie.huang@xxxxxxx>
---
 arch/arm/arm64/traps.c | 32 ++++++++++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

diff --git a/arch/arm/arm64/traps.c b/arch/arm/arm64/traps.c
index 62dd2e6..66f842e 100644
--- a/arch/arm/arm64/traps.c
+++ b/arch/arm/arm64/traps.c
@@ -2,15 +2,43 @@
 #include <mini-os/arm64/traps.h>
 #include <console.h>
 
+static void dump_regs(struct pt_regs *regs,
+                  unsigned long esr, unsigned long far)
+{
+    printk("*** Sync exception at PC = %lx *** \n", regs->pc);
+    printk("Thread state:\n");
+    printk("\tX0  = 0x%016lx X1  = 0x%016lx\n", regs->x[0], regs->x[1]);
+    printk("\tX2  = 0x%016lx X3  = 0x%016lx\n", regs->x[2], regs->x[3]);
+    printk("\tX4  = 0x%016lx X5  = 0x%016lx\n", regs->x[4], regs->x[5]);
+    printk("\tX6  = 0x%016lx X7  = 0x%016lx\n", regs->x[6], regs->x[7]);
+    printk("\tX8  = 0x%016lx X9  = 0x%016lx\n", regs->x[8], regs->x[9]);
+    printk("\tX10 = 0x%016lx X11 = 0x%016lx\n", regs->x[10], regs->x[11]);
+    printk("\tX12 = 0x%016lx X13 = 0x%016lx\n", regs->x[12], regs->x[13]);
+    printk("\tX14 = 0x%016lx X15 = 0x%016lx\n", regs->x[14], regs->x[15]);
+    printk("\tX16 = 0x%016lx X17 = 0x%016lx\n", regs->x[16], regs->x[17]);
+    printk("\tX18 = 0x%016lx X19 = 0x%016lx\n", regs->x[18], regs->x[19]);
+    printk("\tX20 = 0x%016lx X21 = 0x%016lx\n", regs->x[20], regs->x[21]);
+    printk("\tX22 = 0x%016lx X23 = 0x%016lx\n", regs->x[22], regs->x[23]);
+    printk("\tX24 = 0x%016lx X25 = 0x%016lx\n", regs->x[24], regs->x[25]);
+    printk("\tX26 = 0x%016lx X27 = 0x%016lx\n", regs->x[26], regs->x[27]);
+    printk("\tX28 = 0x%016lx X29 = 0x%016lx\n", regs->x[28], regs->x[29]);
+    printk("\tX30 (lr) = 0x%016lx\n", regs->lr);
+    printk("\tsp  = 0x%016lx\n", regs->sp);
+    printk("\tpstate  = 0x%016x\n", regs->pstate);
+    printk("\tesr_el1 = %08lx\n", esr);
+    printk("\tfar_el1 = %08lx\n", far);
+}
+
 void do_bad_mode(struct pt_regs *regs, int reason,
                   unsigned long esr, unsigned long far)
 {
-    /* TO DO */
+    printk(" Bad abort number : %d\n", reason);
+    dump_regs(regs, esr, far);
     do_exit();
 }
 
 void do_sync(struct pt_regs *regs, unsigned long esr, unsigned long far)
 {
-    /* TO DO */
+    dump_regs(regs, esr, far);
     do_exit();
 }
-- 
2.7.4


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