riscv: Format assembler files

Use tabs to match the GCC generated assembler output.

Update #3433.

1 files changed, 168 insertions, 167 deletions

diff --git a/cpukit/score/cpu/riscv/riscv-exception-handler.S b/cpukit/score/cpu/riscv/riscv-exception-handler.S
index 8aba339453..9af88eadcd 100644
--- a/cpukit/score/cpu/riscv/riscv-exception-handler.S
+++ b/cpukit/score/cpu/riscv/riscv-exception-handler.S
@@ -45,177 +45,178 @@ EXTERN(bsp_start_vector_table_begin)
 EXTERN(_Thread_Dispatch)
 PUBLIC(ISR_Handler)
 
-.section .text, "ax"
-.align 4
+	.section	.text, "ax", @progbits
+	.align	2
+
 TYPE_FUNC(ISR_Handler)
 SYM(ISR_Handler):
-  addi sp, sp, -1 * 36 * CPU_SIZEOF_POINTER
-
-  SREG x1, (1 * CPU_SIZEOF_POINTER)(sp)
-  /* Skip x2/sp */
-  SREG x3, (3 * CPU_SIZEOF_POINTER)(sp)
-  SREG x4, (4 * CPU_SIZEOF_POINTER)(sp)
-  SREG x5, (5 * CPU_SIZEOF_POINTER)(sp)
-  SREG x6, (6 * CPU_SIZEOF_POINTER)(sp)
-  SREG x7, (7 * CPU_SIZEOF_POINTER)(sp)
-  SREG x8, (8 * CPU_SIZEOF_POINTER)(sp)
-  SREG x9, (9 * CPU_SIZEOF_POINTER)(sp)
-  SREG x10, (10 * CPU_SIZEOF_POINTER)(sp)
-  SREG x11, (11 * CPU_SIZEOF_POINTER)(sp)
-  SREG x12, (12 * CPU_SIZEOF_POINTER)(sp)
-  SREG x13, (13 * CPU_SIZEOF_POINTER)(sp)
-  SREG x14, (14 * CPU_SIZEOF_POINTER)(sp)
-  SREG x15, (15 * CPU_SIZEOF_POINTER)(sp)
-  SREG x16, (16 * CPU_SIZEOF_POINTER)(sp)
-  SREG x17, (17 * CPU_SIZEOF_POINTER)(sp)
-  SREG x18, (18 * CPU_SIZEOF_POINTER)(sp)
-  SREG x19, (19 * CPU_SIZEOF_POINTER)(sp)
-  SREG x20, (20 * CPU_SIZEOF_POINTER)(sp)
-  SREG x21, (21 * CPU_SIZEOF_POINTER)(sp)
-  SREG x22, (22 * CPU_SIZEOF_POINTER)(sp)
-  SREG x23, (23 * CPU_SIZEOF_POINTER)(sp)
-  SREG x24, (24 * CPU_SIZEOF_POINTER)(sp)
-  SREG x25, (25 * CPU_SIZEOF_POINTER)(sp)
-  SREG x26, (26 * CPU_SIZEOF_POINTER)(sp)
-  SREG x27, (27 * CPU_SIZEOF_POINTER)(sp)
-  SREG x28, (28 * CPU_SIZEOF_POINTER)(sp)
-  SREG x29, (28 * CPU_SIZEOF_POINTER)(sp)
-  SREG x30, (30 * CPU_SIZEOF_POINTER)(sp)
-  SREG x31, (31 * CPU_SIZEOF_POINTER)(sp)
-
-  /* Exception level related registers */
-  csrr a0, mstatus
-  SREG a0, (32 * CPU_SIZEOF_POINTER)(sp)
-  csrr a0, mcause
-  SREG a0, (33 * CPU_SIZEOF_POINTER)(sp)
-  csrr a1, mepc
-  SREG a1, (34 * CPU_SIZEOF_POINTER)(sp)
-
-  /* FIXME Only handle interrupts for now (MSB = 1) */
-  andi a0, a0, 0xf
-
-  /* Increment nesting level */
-  la t0, ISR_NEST_LEVEL
-
-  /* Disable multitasking */
-  la t1, THREAD_DISPATCH_DISABLE_LEVEL
-
-  lw t2, (t0)
-  lw t3, (t1)
-  addi t2, t2, 1
-  addi t3, t3, 1
-  sw t2, (t0)
-  sw t3, (t1)
-
-  /* Save interrupted task stack pointer */
-  addi t4, sp, 36 * CPU_SIZEOF_POINTER
-  SREG t4, (2 * CPU_SIZEOF_POINTER)(sp)
-
-  /* Keep sp (Exception frame address) in s1 */
-  mv   s1, sp
-
-  /* Call the exception handler from vector table */
-
-  /* First function arg for C handler is vector number,
-   * and the second is a pointer to exception frame.
-   * a0/mcause/vector number is already loaded above */
-  mv a1, sp
-
-  /* calculate the offset */
-  la   t5, bsp_start_vector_table_begin
-#if __riscv_xlen == 32
-  slli t6, a0, 2
-#else /* xlen = 64 */
-  slli t6, a0, 3
+	addi	sp, sp, -1 * 36 * CPU_SIZEOF_POINTER
+
+	SREG	x1, (1 * CPU_SIZEOF_POINTER)(sp)
+	/* Skip x2/sp */
+	SREG	x3, (3 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x4, (4 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x5, (5 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x6, (6 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x7, (7 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x8, (8 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x9, (9 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x10, (10 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x11, (11 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x12, (12 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x13, (13 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x14, (14 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x15, (15 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x16, (16 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x17, (17 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x18, (18 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x19, (19 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x20, (20 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x21, (21 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x22, (22 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x23, (23 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x24, (24 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x25, (25 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x26, (26 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x27, (27 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x28, (28 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x29, (28 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x30, (30 * CPU_SIZEOF_POINTER)(sp)
+	SREG	x31, (31 * CPU_SIZEOF_POINTER)(sp)
+
+	/* Exception level related registers */
+	csrr	a0, mstatus
+	SREG	a0, (32 * CPU_SIZEOF_POINTER)(sp)
+	csrr	a0, mcause
+	SREG	a0, (33 * CPU_SIZEOF_POINTER)(sp)
+	csrr	a1, mepc
+	SREG	a1, (34 * CPU_SIZEOF_POINTER)(sp)
+
+	/* FIXME Only handle interrupts for now (MSB = 1) */
+	andi	a0, a0, 0xf
+
+	/* Increment nesting level */
+	la	t0, ISR_NEST_LEVEL
+
+	/* Disable multitasking */
+	la	t1, THREAD_DISPATCH_DISABLE_LEVEL
+
+	lw	t2, (t0)
+	lw	t3, (t1)
+	addi	t2, t2, 1
+	addi	t3, t3, 1
+	sw	t2, (t0)
+	sw	t3, (t1)
+
+	/* Save interrupted task stack pointer */
+	addi	t4, sp, 36 * CPU_SIZEOF_POINTER
+	SREG	t4, (2 * CPU_SIZEOF_POINTER)(sp)
+
+	/* Keep sp (Exception frame address) in s1 */
+	mv	s1, sp
+
+	/* Call the exception handler from vector table */
+
+	/* First function arg for C handler is vector number,
+		* and the second is a pointer to exception frame.
+		* a0/mcause/vector number is already loaded above */
+	mv	a1, sp
+
+	/* calculate the offset */
+	la	t5, bsp_start_vector_table_begin
+#if	__riscv_xlen == 32
+	slli	t6, a0, 2
+#else	/* xlen = 64 */
+	slli	t6, a0, 3
 #endif
-  add  t5, t5, t6
-  LREG t5, (t5)
+	add	t5, t5, t6
+	LREG	t5, (t5)
 
-  /* Do not switch stacks if we are in a nested interrupt. At
-   * this point t2 should be holding ISR_NEST_LEVEL value.
-   */
-  li   s0, 1
-  bgtu t2, s0, jump_to_c_handler
+	/* Do not switch stacks if we are in a nested interrupt. At
+		* this point t2 should be holding ISR_NEST_LEVEL value.
+		*/
+	li	s0, 1
+	bgtu	t2, s0, jump_to_c_handler
 
-  /* Switch to RTEMS dedicated interrupt stack */
-  la     sp, INTERRUPT_STACK_HIGH
-  LREG   sp, (sp)
+	/* Switch to RTEMS dedicated interrupt stack */
+	la	sp, INTERRUPT_STACK_HIGH
+	LREG	sp, (sp)
 
 jump_to_c_handler:
-  jalr t5
-
-  /* Switch back to the interrupted task stack */
-  mv sp, s1
-
-  /* Decrement nesting level */
-  la t0, ISR_NEST_LEVEL
-
-  /* Enable multitasking */
-  la t1, THREAD_DISPATCH_DISABLE_LEVEL
-
-  Lw t2, (t0)
-  lw t3, (t1)
-  addi t2, t2, -1
-  addi t3, t3, -1
-  sw t2, (t0)
-  sw t3, (t1)
-
-  /* Check if _ISR_Nest_level > 0 */
-  bgtz t2, exception_frame_restore
-
-  /* Check if _Thread_Dispatch_disable_level > 0 */
-  bgtz t3, exception_frame_restore
-
-  /* Check if dispatch needed */
-  la   x31, DISPATCH_NEEDED
-  lw x31, (x31)
-  beqz x31, exception_frame_restore
-
-  la x31, _Thread_Dispatch
-  jalr x31
-
-  SYM(exception_frame_restore):
-  LREG x1, (1 * CPU_SIZEOF_POINTER)(sp)
-  /* Skip sp/x2 */
-  LREG x3, (3 * CPU_SIZEOF_POINTER)(sp)
-  LREG x4, (4 * CPU_SIZEOF_POINTER)(sp)
-  LREG x5, (5 * CPU_SIZEOF_POINTER)(sp)
-  LREG x6, (6 * CPU_SIZEOF_POINTER)(sp)
-  LREG x7, (7 * CPU_SIZEOF_POINTER)(sp)
-  LREG x8, (8 * CPU_SIZEOF_POINTER)(sp)
-  LREG x9, (9 * CPU_SIZEOF_POINTER)(sp)
-  LREG x10, (10 * CPU_SIZEOF_POINTER)(sp)
-  LREG x11, (11 * CPU_SIZEOF_POINTER)(sp)
-  LREG x12, (12 * CPU_SIZEOF_POINTER)(sp)
-  LREG x13, (13 * CPU_SIZEOF_POINTER)(sp)
-  LREG x14, (14 * CPU_SIZEOF_POINTER)(sp)
-  LREG x15, (15 * CPU_SIZEOF_POINTER)(sp)
-  LREG x16, (16 * CPU_SIZEOF_POINTER)(sp)
-  LREG x17, (17 * CPU_SIZEOF_POINTER)(sp)
-  LREG x18, (18 * CPU_SIZEOF_POINTER)(sp)
-  LREG x19, (19 * CPU_SIZEOF_POINTER)(sp)
-  LREG x20, (20 * CPU_SIZEOF_POINTER)(sp)
-  LREG x21, (21 * CPU_SIZEOF_POINTER)(sp)
-  LREG x22, (22 * CPU_SIZEOF_POINTER)(sp)
-  LREG x23, (23 * CPU_SIZEOF_POINTER)(sp)
-  LREG x24, (24 * CPU_SIZEOF_POINTER)(sp)
-  LREG x25, (25 * CPU_SIZEOF_POINTER)(sp)
-  LREG x26, (26 * CPU_SIZEOF_POINTER)(sp)
-  LREG x27, (27 * CPU_SIZEOF_POINTER)(sp)
-  LREG x28, (28 * CPU_SIZEOF_POINTER)(sp)
-  LREG x29, (29 * CPU_SIZEOF_POINTER)(sp)
-  LREG x30, (30 * CPU_SIZEOF_POINTER)(sp)
-
-  /* Load mstatus */
-  LREG x31, (32 * CPU_SIZEOF_POINTER)(sp)
-  csrw mstatus, x31
-  /* Load mepc */
-  LREG x31, (34 * CPU_SIZEOF_POINTER)(sp)
-  csrw mepc, x31
-
-  LREG x31, (31 * CPU_SIZEOF_POINTER)(sp)
-
-  /* Unwind exception frame */
-  addi sp, sp, 36 * CPU_SIZEOF_POINTER
-
-  mret
+	jalr	t5
+
+	/* Switch back to the interrupted task stack */
+	mv	sp, s1
+
+	/* Decrement nesting level */
+	la	t0, ISR_NEST_LEVEL
+
+	/* Enable multitasking */
+	la	t1, THREAD_DISPATCH_DISABLE_LEVEL
+
+	Lw	t2, (t0)
+	lw	t3, (t1)
+	addi	t2, t2, -1
+	addi	t3, t3, -1
+	sw	t2, (t0)
+	sw	t3, (t1)
+
+	/* Check if _ISR_Nest_level > 0 */
+	bgtz	t2, exception_frame_restore
+
+	/* Check if _Thread_Dispatch_disable_level > 0 */
+	bgtz	t3, exception_frame_restore
+
+	/* Check if dispatch needed */
+	la	x31, DISPATCH_NEEDED
+	lw	x31, (x31)
+	beqz	x31, exception_frame_restore
+
+	la	x31, _Thread_Dispatch
+	jalr	x31
+
+	SYM(exception_frame_restore):
+	LREG	x1, (1 * CPU_SIZEOF_POINTER)(sp)
+	/* Skip sp/x2 */
+	LREG	x3, (3 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x4, (4 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x5, (5 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x6, (6 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x7, (7 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x8, (8 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x9, (9 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x10, (10 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x11, (11 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x12, (12 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x13, (13 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x14, (14 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x15, (15 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x16, (16 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x17, (17 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x18, (18 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x19, (19 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x20, (20 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x21, (21 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x22, (22 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x23, (23 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x24, (24 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x25, (25 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x26, (26 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x27, (27 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x28, (28 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x29, (29 * CPU_SIZEOF_POINTER)(sp)
+	LREG	x30, (30 * CPU_SIZEOF_POINTER)(sp)
+
+	/* Load mstatus */
+	LREG	x31, (32 * CPU_SIZEOF_POINTER)(sp)
+	csrw	mstatus, x31
+	/* Load mepc */
+	LREG	x31, (34 * CPU_SIZEOF_POINTER)(sp)
+	csrw	mepc, x31
+
+	LREG	x31, (31 * CPU_SIZEOF_POINTER)(sp)
+
+	/* Unwind exception frame */
+	addi	sp, sp, 36 * CPU_SIZEOF_POINTER
+
+	mret