ARMv7 - Revision history

Dialexio at 21:13, 4 July 2016

2016-07-04T21:13:30Z

IAdam1n at 20:00, 3 July 2016

2016-07-03T20:00:07Z

IAdam1n: Updating

2015-10-12T11:07:58Z

Updating

Http: fix casing, links

2012-03-09T20:17:34Z

fix casing, links

Http: moved Armv7 to ARMv7: was wrong cased

2012-03-09T20:10:13Z

moved Armv7 to ARMv7: was wrong cased

5urd at 16:28, 19 February 2011

2011-02-19T16:28:14Z

Iemit737: Someone should put new section titles up and fix my martian wording. kthx

2010-08-06T05:49:35Z

Someone should put new section titles up and fix my martian wording. kthx

New page

Armv7 is the processor instruction set used starting with the [[S5L8920]] in the [[N88ap|iPhone 3GS]] and in all subsequent devices. Processors that support Armv7 instructions are backward compatible with Armv6 instructions, but attempting to run binaries compiled for Arm7 on older, Armv6 processors will result in the error: "Bad CPU type in executable".

==Benefits==
The instructions are more efficient and numerous than the older Armv6 instructions, resulting in a smaller binary and faster execution time. The official SDK allows developers to choose to compile for only Armv6 or a hybrid Armv6/Armv7 binary.

==Negatives==
The applications and libraries that are built into [[iOS]] for Armv7 devices do not contain the Armv6 binaries, so the code will not run on the older processors. This is likely because Apple wants to keep the iOS filesize down and not include unnecessary "junk". It could also serve as a side-benefit for Apple because it prohibits older processors from running "premium features" like Voice Control on an iPhone 3G.

@@ Line 1: / Line 1: @@
-[[ARMv7]] is the processor instruction set used starting with the [[S5L8920]] in the [[N88AP|iPhone 3GS]], [[S5L8922]], [[S5L8930]], [[S5L8940]], [[S5L8942]], [[S5L8945]], [[S5L8950]] and [[S7002]] devices. Processors that support [[ARMv7]] instructions are backward compatible with [[ARMv6]] instructions, but attempting to run binaries compiled for [[ARMv7]] on older, [[ARMv6]] processors will result in the error: "Bad CPU type in executable".
+[[ARMv7]] is the processor instruction set used starting with the [[S5L8920]] in the [[N88AP|iPhone 3GS]], [[S5L8922]], [[S5L8930]], [[S5L8940]], [[S5L8942]], [[S5L8945]], [[S5L8950]], and [[S7002]] devices. Processors that support ARMv7 instructions maintain backwards compatibility with [[ARMv6]] instructions.
-==Benefits==
+== Benefits ==
-The instructions are more efficient and numerous than the older [[ARMv6]] instructions, resulting in a smaller binary and faster execution time. The official SDK allows developers to choose to compile for only [[ARMv6]] or a hybrid [[ARMv6]]/[[ARMv7]] binary.
+The instructions are more efficient and numerous than the older [[ARMv6]] instructions, resulting in a smaller binary and faster execution time. The official SDK allows developers to choose to compile for only [[ARMv6]] or a universal [[ARMv6]]/ARMv7 binary.
 {{stub|hardware}}

← Older revision		Revision as of 20:00, 3 July 2016
Line 1:		Line 1:
−	[[ARMv7]] is the processor instruction set used starting with the [[S5L8920]] in the [[N88AP\|iPhone 3GS]] ~~and~~ in ~~all~~ ~~subsequent~~ devices. Processors that support [[ARMv7]] instructions are backward compatible with [[ARMv6]] instructions, but attempting to run binaries compiled for [[ARMv7]] on older, [[ARMv6]] processors will result in the error: "Bad CPU type in executable".	+	[[ARMv7]] is the processor instruction set used starting with the [[S5L8920]] in the [[N88AP\|iPhone 3GS]], [[S5L8922]], [[S5L8930]], [[S5L8940]], [[S5L8942]], [[S5L8945]], [[S5L8950]] and [[S7002]] devices. Processors that support [[ARMv7]] instructions are backward compatible with [[ARMv6]] instructions, but attempting to run binaries compiled for [[ARMv7]] on older, [[ARMv6]] processors will result in the error: "Bad CPU type in executable".

	==Benefits==		==Benefits==

@@ Line 1: / Line 1: @@
-[[ARMv7]] is the processor instruction set used starting with the [[S5L8920]] in the [[N88ap|iPhone 3GS]] and in all subsequent devices. Processors that support [[ARMv7]] instructions are backward compatible with [[ARMv6]] instructions, but attempting to run binaries compiled for [[ARMv7]] on older, [[ARMv6]] processors will result in the error: "Bad CPU type in executable".
+[[ARMv7]] is the processor instruction set used starting with the [[S5L8920]] in the [[N88AP|iPhone 3GS]] and in all subsequent devices. Processors that support [[ARMv7]] instructions are backward compatible with [[ARMv6]] instructions, but attempting to run binaries compiled for [[ARMv7]] on older, [[ARMv6]] processors will result in the error: "Bad CPU type in executable".
 ==Benefits==
@@ Line 5: / Line 5: @@
 ==Negatives==
-The applications and libraries that are built into [[iOS]] for [[ARMv7]] devices do not contain the [[ARMv6]] binaries, so the code will not run on the older processors. This is likely because Apple wants to keep the [[iOS]] filesize down and not include unnecessary "junk". It could also serve as a side-benefit for Apple because it prohibits older processors from running "premium features" like Voice Control on an [[N82ap|iPhone 3G]].
+The applications and libraries that are built into [[iOS]] for [[ARMv7]] devices do not contain the [[ARMv6]] binaries, so the code will not run on the older processors. This is likely because Apple wants to keep the [[iOS]] filesize down and not include unnecessary "junk". It could also serve as a side-benefit for Apple because it prohibits older processors from running "premium features" like Voice Control on an [[N82AP|iPhone 3G]].
 {{stub|hardware}}

← Older revision		Revision as of 16:28, 19 February 2011
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	==Negatives==		==Negatives==
	The applications and libraries that are built into [[iOS]] for Armv7 devices do not contain the Armv6 binaries, so the code will not run on the older processors. This is likely because Apple wants to keep the iOS filesize down and not include unnecessary "junk". It could also serve as a side-benefit for Apple because it prohibits older processors from running "premium features" like Voice Control on an iPhone 3G.		The applications and libraries that are built into [[iOS]] for Armv7 devices do not contain the Armv6 binaries, so the code will not run on the older processors. This is likely because Apple wants to keep the iOS filesize down and not include unnecessary "junk". It could also serve as a side-benefit for Apple because it prohibits older processors from running "premium features" like Voice Control on an iPhone 3G.
		+
		+	{{stub\|hardware}}

← Older revision	Revision as of 20:10, 9 March 2012
(No difference)