diff options
Diffstat (limited to 'c/src/lib/libbsp/mips/rbtx4925/startup/exception.S')
| -rw-r--r-- | c/src/lib/libbsp/mips/rbtx4925/startup/exception.S | 46 |
1 files changed, 23 insertions, 23 deletions
diff --git a/c/src/lib/libbsp/mips/rbtx4925/startup/exception.S b/c/src/lib/libbsp/mips/rbtx4925/startup/exception.S index 7efe6c5583..d4904e6439 100644 --- a/c/src/lib/libbsp/mips/rbtx4925/startup/exception.S +++ b/c/src/lib/libbsp/mips/rbtx4925/startup/exception.S @@ -137,7 +137,7 @@ void _ISR_Handler() FRAME(rbtx4925_ISR_Handler,sp,0,ra) .set noreorder -#if 0 +#if 0 /* Activate TX4925 PIO19 signal for diagnostics */ lui k0,0xff1f ori k0,k0,0xf500 @@ -148,7 +148,7 @@ FRAME(rbtx4925_ISR_Handler,sp,0,ra) ori k0,k0,0xf500 sw k1,(k0) #endif - + mfc0 k0,C0_CAUSE /* Determine if an interrupt generated this exception */ nop and k1,k0,CAUSE_EXCMASK @@ -190,7 +190,7 @@ _chk_int: /* wastes a lot of stack space for context?? */ ADDIU sp,sp,-EXCP_STACK_SIZE - STREG ra, R_RA*R_SZ(sp) /* store ra on the stack */ + STREG ra, R_RA*R_SZ(sp) /* store ra on the stack */ STREG v0, R_V0*R_SZ(sp) STREG v1, R_V1*R_SZ(sp) STREG a0, R_A0*R_SZ(sp) @@ -207,13 +207,13 @@ _chk_int: STREG t7, R_T7*R_SZ(sp) mflo t0 STREG t8, R_T8*R_SZ(sp) - STREG t0, R_MDLO*R_SZ(sp) + STREG t0, R_MDLO*R_SZ(sp) STREG t9, R_T9*R_SZ(sp) mfhi t0 STREG gp, R_GP*R_SZ(sp) - STREG t0, R_MDHI*R_SZ(sp) + STREG t0, R_MDHI*R_SZ(sp) STREG fp, R_FP*R_SZ(sp) - + .set noat STREG AT, R_AT*R_SZ(sp) .set at @@ -287,7 +287,7 @@ _chk_int: mtc0 t1,C0_SR nop #endif - + _ISR_Handler_cleanup: /* @@ -317,7 +317,7 @@ _ISR_Handler_cleanup: * #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == TRUE ) * restore stack * #endif - * + * * if ( !_Context_Switch_necessary && !_ISR_Signals_to_thread_executing ) * goto the label "exit interrupt (simple case)" */ @@ -351,7 +351,7 @@ _ISR_Handler_cleanup: /* save off our stack frame so the context switcher can get to it */ la t0,__exceptionStackFrame STREG sp,(t0) - + jal _Thread_Dispatch NOP @@ -361,7 +361,7 @@ _ISR_Handler_cleanup: STREG zero,(t0) NOP -/* +/* ** turn interrupts back off while we restore context so ** a badly timed interrupt won't accidentally mess things up */ @@ -375,7 +375,7 @@ _ISR_Handler_cleanup: mtc0 t0, C0_SR NOP - + /* * prepare to get out of interrupt * return from interrupt (maybe to _ISR_Dispatch) @@ -391,7 +391,7 @@ _ISR_Handler_exit: LDREG t8, R_MDLO*R_SZ(sp) LDREG t0, R_T0*R_SZ(sp) mtlo t8 - LDREG t8, R_MDHI*R_SZ(sp) + LDREG t8, R_MDHI*R_SZ(sp) LDREG t1, R_T1*R_SZ(sp) mthi t8 LDREG t2, R_T2*R_SZ(sp) @@ -411,10 +411,10 @@ _ISR_Handler_exit: LDREG a3, R_A3*R_SZ(sp) LDREG v1, R_V1*R_SZ(sp) LDREG v0, R_V0*R_SZ(sp) - + LDREG k1, R_EPC*R_SZ(sp) mtc0 k1,C0_EPC - + .set noat LDREG AT, R_AT*R_SZ(sp) .set at @@ -428,7 +428,7 @@ _ISR_Handler_quick_exit: #if 0 .global int7_isr - .extern Interrupt_7_isr + .extern Interrupt_7_isr int7_isr: /* Verify interrupt is from Timer */ la k0,IRCS /* read Interrupt Current Status register */ @@ -464,7 +464,7 @@ FRAME(_BRK_Handler,sp,0,ra) la k0,INT_CFG3 sw k1,(k0) #endif - + la k0,_brk_esr_link /* Jump to next exception handler in PMON exception chain */ lw k0,(k0) lw k0,4(k0) @@ -492,7 +492,7 @@ FRAME(init_exc_vecs,sp,0,ra) .set noreorder .extern mon_onintr - + /* Install interrupt handler in PMON exception handling chain */ addiu sp,sp,-8 @@ -522,7 +522,7 @@ ENDFRAME(init_exc_vecs) */ FRAME(enable_int7,sp,0,ra) .set noreorder - + la t0,IRDM1 # Set interrupt controller detection mode (bits 2-3 = 0 for int 7 active low) li t1,0x0 sw t1,(t0) @@ -530,7 +530,7 @@ FRAME(enable_int7,sp,0,ra) la t0,IRLVL4 # Set interrupt controller level (bit 8-10 = 2 for int 7 at level 2) li t1,0x200 sw t1,(t0) - + la t0,IRMSK # Set interrupt controller mask li t1,0x0 sw t1,(t0) @@ -566,7 +566,7 @@ ENDFRAME(disable_int7) * tx4925exception: * Diagnostic code that can be hooked to PMON interrupt handler. * Generates pulse on PIO22 pin. -* Called from _exception code in PMON (see mips.s of PMON). +* Called from _exception code in PMON (see mips.s of PMON). * Return address is located in k1. */ FRAME(tx4925exception,sp,0,ra) @@ -609,7 +609,7 @@ ENDFRAME(tx4925exception) .data k1tmp: .word 0 /* Temporary strage for K1 during interrupt service */ - + /************************************************************* * * Exception handler links, used in PMON exception handler chains @@ -619,7 +619,7 @@ k1tmp: .word 0 /* Temporary strage for K1 during interrupt service */ _int_esr_link: .word 0 .word rbtx4925_ISR_Handler - + /* Break exception service routine link */ .global _brk_esr_link _brk_esr_link: @@ -627,5 +627,5 @@ _brk_esr_link: .word _BRK_Handler - + |