microblaze: Do not use r0_ram space for syscall debugging (d8748e73) · Commits · 戴 / test

arch/microblaze/kernel/entry.S

+16 −3

Original line number	Diff line number	Diff line
		@@ -39,6 +39,15 @@
		/* The offset of the struct pt_regs in a `state save frame' on the stack. */
		#define PTO STATE_SAVE_ARG_SPACE /* 24 the space for args */

		#ifdef DEBUG
		/* Create space for syscalls counting. */
		.section .data
		.global syscall_debug_table
		.align 4
		syscall_debug_table:
		.space (__NR_syscalls * 4)
		#endif /* DEBUG */

		#define C_ENTRY(name) .globl name; .align 4; name

		/*
		@@ -371,10 +380,14 @@ C_ENTRY(_user_exception):
		add r12, r12, r12;

		#ifdef DEBUG
		/* Trac syscalls and stored them to r0_ram */
		lwi r3, r12, 0x400 + r0_ram
		/* Trac syscalls and stored them to syscall_debug_table */
		/* The first syscall location stores total syscall number */
		lwi r3, r0, syscall_debug_table
		addi r3, r3, 1
		swi r3, r0, syscall_debug_table
		lwi r3, r12, syscall_debug_table
		addi r3, r3, 1
		swi r3, r12, 0x400 + r0_ram
		swi r3, r12, syscall_debug_table
		#endif

		# Find and jump into the syscall handler.