diff options
Diffstat (limited to 'payloads')
| -rw-r--r-- | payloads/libpayload/arch/arm/head.S | 20 | ||||
| -rw-r--r-- | payloads/libpayload/arch/arm/util.S | 8 | ||||
| -rw-r--r-- | payloads/libpayload/include/arm/arch/asm.h | 47 |
3 files changed, 60 insertions, 15 deletions
diff --git a/payloads/libpayload/arch/arm/head.S b/payloads/libpayload/arch/arm/head.S index 7a706e3aa6..0d23c7256f 100644 --- a/payloads/libpayload/arch/arm/head.S +++ b/payloads/libpayload/arch/arm/head.S @@ -27,17 +27,16 @@ * SUCH DAMAGE. */ - .global _entry, _leave - .text - .align 4 +#include <arch/asm.h> 1: +.align 4 .word _stack /* * Our entry point */ -_entry: +ENTRY(_entry) /* TODO: disable interrupts */ @@ -46,14 +45,15 @@ _entry: /* Setup new stack */ ldr sp, 1b - /* TODO: Save old stack pointer */ + /* TODO: Save old stack pointer and link register */ /* Let's rock. */ - b start_main + bl start_main - /* %eax has the return value - pass it on unmolested */ -_leave: - /* TODO: restore old stack pointer. */ + /* %r0 has the return value - pass it on unmolested */ + + /* TODO: restore old stack pointer and link register */ /* Return to the original context. */ - mov pc, lr + bx lr +ENDPROC(_entry) diff --git a/payloads/libpayload/arch/arm/util.S b/payloads/libpayload/arch/arm/util.S index e3f173eb2d..7c14a39a4f 100644 --- a/payloads/libpayload/arch/arm/util.S +++ b/payloads/libpayload/arch/arm/util.S @@ -27,11 +27,9 @@ * SUCH DAMAGE. */ - .global halt - .text - .align 4 +#include <arch/asm.h> /* This function puts the system into a halt. */ - .type halt, function -halt: +ENTRY(halt) b halt +ENDPROC(halt) diff --git a/payloads/libpayload/include/arm/arch/asm.h b/payloads/libpayload/include/arm/arch/asm.h new file mode 100644 index 0000000000..1c3f7a21c3 --- /dev/null +++ b/payloads/libpayload/include/arm/arch/asm.h @@ -0,0 +1,47 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2013 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef __ARM_ASM_H +#define __ARM_ASM_H + +#if defined __arm__ +# define ARM(x...) x +# define THUMB(x...) +#elif defined __thumb__ +# define ARM(x...) +# define THUMB(x...) x +#else +# error Not in ARM or thumb mode! +#endif + +#define ALIGN .align 0 + +#define ENDPROC(name) \ + .type name, %function; \ + END(name) + +#define ENTRY(name) \ + .globl name; \ + ALIGN; \ + name: + +#define END(name) \ + .size name, .-name + +#endif /* __ARM_ASM_H */ |