Blame - docs/internals/register-uses.txt - platform/external/valgrind

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sewardj	becae08	2006-01-12 12:20:48 +0000	[diff] [blame]	1
				2	This file records register use conventions and info for the 4
				3	supported platforms (since it is ABI dependent). This is so as to
				4	avoid having to endlessly re-look up this info in ABI documents.
				5
				6	-----------------------
				7
				8	x86-linux
				9	~~~~~~~~~
				10
				11	Reg Callee Arg
				12	Name Saves? Reg? Comment Vex-uses?
				13	--------------------------------------------------------------
				14	eax n n int[31:0] retreg y
				15	ebx y n y
				16	ecx n n y
				17	edx n n int[63:32] retreg y
				18	esi y n y
				19	edi y n y
				20	ebp y n & guest state
				21	esp reserved n/a n/a
				22	eflags n n/a y
				23	st0 n ? n fp retreg y
				24	st1-7 n ? n y
				25	xmm0-7 n ? n y
				26
				27
				28	amd64-linux
				29	~~~~~~~~~~~
				30
				31	Reg Callee Arg
				32	Name Saves? Reg? Comment Vex-uses?
				33	-------------------------------------------------------------------
sewardj	9f6473a	2006-11-19 01:36:44 +0000	[diff] [blame]	34	rax n n int[63:0] retreg
sewardj	becae08	2006-01-12 12:20:48 +0000	[diff] [blame]	35	rbx y n y
sewardj	9f6473a	2006-11-19 01:36:44 +0000	[diff] [blame]	36	rcx n int#4
				37	rdx n int#3 int[127:64] retreg
sewardj	becae08	2006-01-12 12:20:48 +0000	[diff] [blame]	38	rsi n int#2 y
				39	rdi n int#1 y
				40	rbp y n & guest state
				41	rsp reserved n/a n/a
sewardj	9f6473a	2006-11-19 01:36:44 +0000	[diff] [blame]	42	r8 n int#5 y
				43	r9 n int#6 y
sewardj	becae08	2006-01-12 12:20:48 +0000	[diff] [blame]	44	r10 n ?
sewardj	9f6473a	2006-11-19 01:36:44 +0000	[diff] [blame]	45	r11 n jmp temporary
				46	r12-15 y y
sewardj	becae08	2006-01-12 12:20:48 +0000	[diff] [blame]	47	eflags n n/a y
				48	st0-7 n n long double retreg y
sewardj	9f6473a	2006-11-19 01:36:44 +0000	[diff] [blame]	49	xmm0 n fp#1 fp retreg
				50	xmm1 n fp#2 fp-high retreg
				51	xmm2-7 n fp#3-8 y (3-7)
				52	xmm8-15 n y (8-12)
sewardj	becae08	2006-01-12 12:20:48 +0000	[diff] [blame]	53
sewardj	069a075	2006-03-12 13:36:06 +0000	[diff] [blame]	54
				55	ppc32-linux
				56	~~~~~~~~~~~
				57
				58	Reg Callee Arg
				59	Name Saves? Reg? Comment Vex-uses?
				60	-------------------------------------------------------------------
				61	r0 n n sometimes RAZ
				62	r1 y n stack pointer
				63	r2 n n
				64	r3 n int#1 int[31:0] retreg y
				65	r4 n int#2 also int retreg y
				66	r5 n int#3 y
				67	r6 n int#4 y
				68	r7 n int#5 y
				69	r8 n int#6 y
				70	r9 n int#7 y
				71	r10 n int#8 y
				72	r11 n y
				73	r12 n y
				74	r13 ?
				75	r14-28 y y
				76	r29 y reserved for dispatcher
				77	r30 y altivec spill temporary
				78	r31 y & guest state
				79	f0 n
				80	f1 n fp#1 fp retreg
				81	f2-8 n fp#2-8
				82	f9-13 n
				83	f14-31 y y (14-21)
				84	v0-v19 ?
				85	v20-31 y y (20-27,29)
				86	cr0-7
				87	lr y return address
				88	ctr n
				89	xer n
				90	fpscr
				91
sewardj	bcad511	2006-10-17 01:48:02 +0000	[diff] [blame]	92
				93	ppc64-linux
				94	~~~~~~~~~~~
				95	TBD
				96
				97
				98	ppc32-aix5
				99	~~~~~~~~~~
				100
				101	Reg Callee Arg
				102	Name Saves? Reg? Comment Vex-uses?
				103	-------------------------------------------------------------------
				104	r0 n n sometimes RAZ
				105	r1 y n stack pointer
				106	r2 n n TOC pointer
				107	r3 n int#1 int[31:0] retreg y
				108	r4 n int#2 also int retreg y
				109	r5 n int#3 y
				110	r6 n int#4 y
				111	r7 n int#5 y
				112	r8 n int#6 y
				113	r9 n int#7 y
				114	r10 n int#8 y
				115	r11 n "env pointer?!" y
				116	r12 n "exn handling" y
				117	r13 ? "reserved in 64-bit env"
				118	r14-28 y y
				119	r29 y reserved for dispatcher
				120	r30 y altivec spill temporary
				121	r31 y & guest state
				122	f0 n
				123	f1 n fp#1 fp retreg
				124	f2-13 n fp#2-13
				125	f14-31 y y (14-21)
				126	v0-v19 ?
				127	v20-31 y y (20-27,29)
				128	cr0-7
				129	lr y return address
				130	ctr n
				131	xer n
				132	fpscr