diff options
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/arm/gdbarmsim/start/start.S | 56 |
1 files changed, 28 insertions, 28 deletions
diff --git a/c/src/lib/libbsp/arm/gdbarmsim/start/start.S b/c/src/lib/libbsp/arm/gdbarmsim/start/start.S index dc443beb92..e7c820352e 100644 --- a/c/src/lib/libbsp/arm/gdbarmsim/start/start.S +++ b/c/src/lib/libbsp/arm/gdbarmsim/start/start.S @@ -80,7 +80,7 @@ - Allow linker script to provide stack via __stack symbol - see defintion of .Lstack - Provide "hooks" that may be used by the application to add - custom init code - see .Lhwinit and .Lswinit + custom init code - see .Lhwinit and .Lswinit - Go through all execution modes and set up stack for each of them. Loosely based on init.s from ARM/Motorola example code. Note: Mode switch via CPSR is not allowed once in non-privileged @@ -91,10 +91,10 @@ cmp r3, #0 #ifdef __thumb2__ it eq -#endif +#endif ldreq r3, .LC0 /* Note: This 'mov' is essential when starting in User, and ensures we - always get *some* sp value for the initial mode, even if we + always get *some* sp value for the initial mode, even if we have somehow missed it below (in which case it gets the same value as FIQ - not ideal, but better than nothing.) */ mov sp, r3 @@ -107,8 +107,8 @@ msr CPSR_c, #0xD1 /* FIRQ mode, interrupts disabled */ mov sp, r3 sub sl, sp, #0x1000 /* This mode also has its own sl (see below) */ - - mov r3, sl + + mov r3, sl msr CPSR_c, #0xD7 /* Abort mode, interrupts disabled */ mov sp, r3 sub r3, r3, #0x1000 @@ -120,7 +120,7 @@ msr CPSR_c, #0xD2 /* IRQ mode, interrupts disabled */ mov sp, r3 sub r3, r3, #0x2000 - + msr CPSR_c, #0xD3 /* Supervisory mode, interrupts disabled */ mov sp, r3 @@ -128,11 +128,11 @@ bic r3, r3, #0x00FF /* Align with current 64k block */ bic r3, r3, #0xFF00 - str r3, [r3, #-4] /* Move value into user mode sp without */ - ldmdb r3, {sp}^ /* changing modes, via '^' form of ldm */ + str r3, [r3, #-4] /* Move value into user mode sp without */ + ldmdb r3, {sp}^ /* changing modes, via '^' form of ldm */ orr r2, r2, #0xC0 /* Back to original mode, presumably SVC, */ msr CPSR_c, r2 /* with FIQ/IRQ disable bits forced to 1 */ -#endif +#endif .LC23: /* Setup a default stack-limit in-case the code has been compiled with "-mapcs-stack-check". Hard-wiring this value @@ -148,11 +148,11 @@ mov a2, #0 /* Second arg: fill value */ mov fp, a2 /* Null frame pointer */ mov r7, a2 /* Null frame pointer for Thumb */ - + ldr a1, .LC1 /* First arg: start of memory block */ - ldr a3, .LC2 + ldr a3, .LC2 sub a3, a3, a1 /* Third arg: length of block */ - + #if defined(__thumb__) && !defined(__thumb2__) /* Enter Thumb mode.... */ @@ -162,9 +162,9 @@ .code 16 .global __change_mode .thumb_func -__change_mode: +__change_mode: #endif - + bl FUNCTION (memset) #if !defined (ARM_RDP_MONITOR) && !defined (ARM_RDI_MONITOR) /* Changes by toralf: Taken from libgloss/m68k/crt0.S @@ -180,7 +180,7 @@ __change_mode: mov lr, pc mov pc, r3 #endif -.LC24: +.LC24: ldr r3, .Lswinit cmp r3, #0 beq .LC25 @@ -191,13 +191,13 @@ __change_mode: mov pc, r3 #endif -.LC25: +.LC25: mov r0, #0 /* no arguments */ mov r1, #0 /* no argv either */ #else /* Need to set up standard file handles */ bl FUNCTION (initialise_monitor_handles) - + #ifdef ARM_RDP_MONITOR swi SWI_GetEnv /* sets r0 to point to the command line */ mov r1, r0 @@ -289,7 +289,7 @@ __change_mode: str r4, [r3] add r3, #4 b .LC15 -.LC14: +.LC14: /* Ensure doubleword stack alignment. */ mov r4, sp mov r5, #7 @@ -328,10 +328,10 @@ change_back: With an Angel debug monitor, this will report 'Unknown SWI'. */ swi SWI_Exit #endif - - /* For Thumb, constants must be after the code since only + + /* For Thumb, constants must be after the code since only positive offsets are supported for PC relative addresses. */ - + .align 0 .LC0: #ifdef ARM_RDI_MONITOR @@ -342,15 +342,15 @@ change_back: may be defined externally; .Lstack will be used instead of .LC0 if it points to a non-0 value. Also set up references to "hooks" that may be used by the application to provide additional init code. */ - + #ifdef __pe__ .word 0x800000 #else .word 0x80000 /* Top of RAM on the PIE board. */ #endif -.Lstack: +.Lstack: .word __stack -.Lhwinit: +.Lhwinit: .word FUNCTION (hardware_init_hook) .Lswinit: .word FUNCTION (software_init_hook) @@ -360,13 +360,13 @@ change_back: runtime (meaning "ignore setting") for the variables, when the user does not provide the symbols. (The linker uses a weak symbol if, and only if, a normal version of the same symbol isn't provided - e.g. by a linker script or another object file.) */ + e.g. by a linker script or another object file.) */ .weak __stack - .weak FUNCTION (hardware_init_hook) + .weak FUNCTION (hardware_init_hook) .weak FUNCTION (software_init_hook) #endif - + #endif #if defined(__ELF__) && !defined(__USING_SJLJ_EXCEPTIONS__) /* Protect against unhandled exceptions. */ @@ -396,7 +396,7 @@ __stack_base__: .word 0 StackLimit: .word 0 CommandLine: .space 256,0 /* Maximum length of 255 chars handled. */ #endif - + #ifdef __pe__ .section .idata$3 .long 0,0,0,0,0,0,0,0 |