[arm] Split out 32-bit-specific code to arch/arm32

Signed-off-by: Michael Brown <mcb30@ipxe.org>

3 files changed, 13 insertions, 147 deletions

diff --git a/src/arch/arm/core/arm_bigint.c b/src/arch/arm/core/arm_bigint.c
deleted file mode 100644
index 839bead18..000000000
--- a/src/arch/arm/core/arm_bigint.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Copyright (C) 2016 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * 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; either version 2 of the
- * License, or any later version.
- *
- * 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 Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- * You can also choose to distribute this program under the terms of
- * the Unmodified Binary Distribution Licence (as given in the file
- * COPYING.UBDL), provided that you have satisfied its requirements.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
-
-#include <stdint.h>
-#include <string.h>
-#include <ipxe/bigint.h>
-
-/** @file
- *
- * Big integer support
- */
-
-/**
- * Multiply big integers
- *
- * @v multiplicand0	Element 0 of big integer to be multiplied
- * @v multiplier0	Element 0 of big integer to be multiplied
- * @v result0		Element 0 of big integer to hold result
- * @v size		Number of elements
- */
-void bigint_multiply_raw ( const uint32_t *multiplicand0,
-			   const uint32_t *multiplier0,
-			   uint32_t *result0, unsigned int size ) {
-	const bigint_t ( size ) __attribute__ (( may_alias )) *multiplicand =
-		( ( const void * ) multiplicand0 );
-	const bigint_t ( size ) __attribute__ (( may_alias )) *multiplier =
-		( ( const void * ) multiplier0 );
-	bigint_t ( size * 2 ) __attribute__ (( may_alias )) *result =
-		( ( void * ) result0 );
-	unsigned int i;
-	unsigned int j;
-	uint32_t multiplicand_element;
-	uint32_t multiplier_element;
-	uint32_t *result_elements;
-	uint32_t discard_low;
-	uint32_t discard_high;
-	uint32_t discard_temp;
-
-	/* Zero result */
-	memset ( result, 0, sizeof ( *result ) );
-
-	/* Multiply integers one element at a time */
-	for ( i = 0 ; i < size ; i++ ) {
-		multiplicand_element = multiplicand->element[i];
-		for ( j = 0 ; j < size ; j++ ) {
-			multiplier_element = multiplier->element[j];
-			result_elements = &result->element[ i + j ];
-			/* Perform a single multiply, and add the
-			 * resulting double-element into the result,
-			 * carrying as necessary.  The carry can
-			 * never overflow beyond the end of the
-			 * result, since:
-			 *
-			 *     a < 2^{n}, b < 2^{n} => ab < 2^{2n}
-			 */
-			__asm__ __volatile__ ( "umull %1, %2, %5, %6\n\t"
-					       "ldr %3, [%0]\n\t"
-					       "adds %3, %1\n\t"
-					       "stmia %0!, {%3}\n\t"
-					       "ldr %3, [%0]\n\t"
-					       "adcs %3, %2\n\t"
-					       "stmia %0!, {%3}\n\t"
-					       "bcc 2f\n\t"
-					       "\n1:\n\t"
-					       "ldr %3, [%0]\n\t"
-					       "adcs %3, #0\n\t"
-					       "stmia %0!, {%3}\n\t"
-					       "bcs 1b\n\t"
-					       "\n2:\n\t"
-					       : "+l" ( result_elements ),
-						 "=l" ( discard_low ),
-						 "=l" ( discard_high ),
-						 "=l" ( discard_temp ),
-						 "+m" ( *result )
-					       : "l" ( multiplicand_element ),
-						 "l" ( multiplier_element )
-					       : "cc" );
-		}
-	}
-}
diff --git a/src/arch/arm/core/arm_io.c b/src/arch/arm/core/arm_io.c
index 804014c9a..4bc47a5c6 100644
--- a/src/arch/arm/core/arm_io.c
+++ b/src/arch/arm/core/arm_io.c
@@ -33,7 +33,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
  */
 
 /** An ARM I/O qword */
-union arm_io_qword {
+union arm32_io_qword {
 	uint64_t qword;
 	uint32_t dword[2];
 };
@@ -44,12 +44,12 @@ union arm_io_qword {
  * @v io_addr		I/O address
  * @ret data		Value read
  *
- * This is not atomic for ARM.
+ * This is not atomic for ARM32.
  */
-static uint64_t arm_readq ( volatile uint64_t *io_addr ) {
-	volatile union arm_io_qword *ptr =
-		container_of ( io_addr, union arm_io_qword, qword );
-	union arm_io_qword tmp;
+static uint64_t arm32_readq ( volatile uint64_t *io_addr ) {
+	volatile union arm32_io_qword *ptr =
+		container_of ( io_addr, union arm32_io_qword, qword );
+	union arm32_io_qword tmp;
 
 	tmp.dword[0] = readl ( &ptr->dword[0] );
 	tmp.dword[1] = readl ( &ptr->dword[1] );
@@ -62,12 +62,12 @@ static uint64_t arm_readq ( volatile uint64_t *io_addr ) {
  * @v data		Value to write
  * @v io_addr		I/O address
  *
- * This is not atomic for ARM.
+ * This is not atomic for ARM32.
  */
-static void arm_writeq ( uint64_t data, volatile uint64_t *io_addr ) {
-	volatile union arm_io_qword *ptr =
-		container_of ( io_addr, union arm_io_qword, qword );
-	union arm_io_qword tmp;
+static void arm32_writeq ( uint64_t data, volatile uint64_t *io_addr ) {
+	volatile union arm32_io_qword *ptr =
+		container_of ( io_addr, union arm32_io_qword, qword );
+	union arm32_io_qword tmp;
 
 	tmp.qword = data;
 	writel ( tmp.dword[0], &ptr->dword[0] );
@@ -84,5 +84,5 @@ PROVIDE_IOAPI_INLINE ( arm, writew );
 PROVIDE_IOAPI_INLINE ( arm, writel );
 PROVIDE_IOAPI_INLINE ( arm, iodelay );
 PROVIDE_IOAPI_INLINE ( arm, mb );
-PROVIDE_IOAPI ( arm, readq, arm_readq );
-PROVIDE_IOAPI ( arm, writeq, arm_writeq );
+PROVIDE_IOAPI ( arm, readq, arm32_readq );
+PROVIDE_IOAPI ( arm, writeq, arm32_writeq );
diff --git a/src/arch/arm/core/setjmp.S b/src/arch/arm/core/setjmp.S
deleted file mode 100644
index 7e7b0fe58..000000000
--- a/src/arch/arm/core/setjmp.S
+++ /dev/null
@@ -1,32 +0,0 @@
-FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL )
-
-	.text
-	.arm
-
-/*
- * Save stack context for non-local goto
- */
-	.globl	setjmp
-	.type	setjmp, %function
-setjmp:
-	/* Store registers */
-	stmia	r0, { r4, r5, r6, r7, r8, r9, r10, fp, sp, lr }
-	/* Return 0 when returning as setjmp() */
-	mov	r0, #0
-	bx	lr
-	.size	setjmp, . - setjmp
-
-/*
- * Non-local jump to a saved stack context
- */
-	.globl	longjmp
-	.type	longjmp, %function
-longjmp:
-	/* Restore registers */
-	ldmia	r0, { r4, r5, r6, r7, r8, r9, r10, fp, sp, lr }
-	/* Force result to non-zero */
-	movs	r0, r1
-	moveq	r0, #1
-	/* Return to setjmp() caller */
-	bx	lr
-	.size	longjmp, . - longjmp