File diff 052c0cbc4bbf → 85642093068c
BLD/build/HEADERS/CUR-92-vmkdrivers-asm-x64/vmkernel64/release/asm/calling.h
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new file 100644
 
/* 
 
 * Some macros to handle stack frames in assembly.
 
 */ 
 

	
 

	
 
#define R15 0
 
#define R14 8
 
#define R13 16
 
#define R12 24
 
#define RBP 32
 
#define RBX 40
 
/* arguments: interrupts/non tracing syscalls only save upto here*/
 
#define R11 48
 
#define R10 56	
 
#define R9 64
 
#define R8 72
 
#define RAX 80
 
#define RCX 88
 
#define RDX 96
 
#define RSI 104
 
#define RDI 112
 
#define ORIG_RAX 120       /* + error_code */ 
 
/* end of arguments */ 	
 
/* cpu exception frame or undefined in case of fast syscall. */
 
#define RIP 128
 
#define CS 136
 
#define EFLAGS 144
 
#define RSP 152
 
#define SS 160
 
#define ARGOFFSET R11
 
#define SWFRAME ORIG_RAX
 

	
 
	.macro SAVE_ARGS addskip=0,norcx=0,nor891011=0
 
	subq  $9*8+\addskip,%rsp
 
	CFI_ADJUST_CFA_OFFSET	9*8+\addskip
 
	movq  %rdi,8*8(%rsp) 
 
	CFI_REL_OFFSET	rdi,8*8
 
	movq  %rsi,7*8(%rsp) 
 
	CFI_REL_OFFSET	rsi,7*8
 
	movq  %rdx,6*8(%rsp)
 
	CFI_REL_OFFSET	rdx,6*8
 
	.if \norcx
 
	.else
 
	movq  %rcx,5*8(%rsp)
 
	CFI_REL_OFFSET	rcx,5*8
 
	.endif
 
	movq  %rax,4*8(%rsp) 
 
	CFI_REL_OFFSET	rax,4*8
 
	.if \nor891011
 
	.else
 
	movq  %r8,3*8(%rsp) 
 
	CFI_REL_OFFSET	r8,3*8
 
	movq  %r9,2*8(%rsp) 
 
	CFI_REL_OFFSET	r9,2*8
 
	movq  %r10,1*8(%rsp) 
 
	CFI_REL_OFFSET	r10,1*8
 
	movq  %r11,(%rsp) 
 
	CFI_REL_OFFSET	r11,0*8
 
	.endif
 
	.endm
 

	
 
#define ARG_SKIP 9*8
 
	.macro RESTORE_ARGS skiprax=0,addskip=0,skiprcx=0,skipr11=0,skipr8910=0,skiprdx=0
 
	.if \skipr11
 
	.else
 
	movq (%rsp),%r11
 
	CFI_RESTORE r11
 
	.endif
 
	.if \skipr8910
 
	.else
 
	movq 1*8(%rsp),%r10
 
	CFI_RESTORE r10
 
	movq 2*8(%rsp),%r9
 
	CFI_RESTORE r9
 
	movq 3*8(%rsp),%r8
 
	CFI_RESTORE r8
 
	.endif
 
	.if \skiprax
 
	.else
 
	movq 4*8(%rsp),%rax
 
	CFI_RESTORE rax
 
	.endif
 
	.if \skiprcx
 
	.else
 
	movq 5*8(%rsp),%rcx
 
	CFI_RESTORE rcx
 
	.endif
 
	.if \skiprdx
 
	.else
 
	movq 6*8(%rsp),%rdx
 
	CFI_RESTORE rdx
 
	.endif
 
	movq 7*8(%rsp),%rsi
 
	CFI_RESTORE rsi
 
	movq 8*8(%rsp),%rdi
 
	CFI_RESTORE rdi
 
	.if ARG_SKIP+\addskip > 0
 
	addq $ARG_SKIP+\addskip,%rsp
 
	CFI_ADJUST_CFA_OFFSET	-(ARG_SKIP+\addskip)
 
	.endif
 
	.endm	
 

	
 
	.macro LOAD_ARGS offset
 
	movq \offset(%rsp),%r11
 
	movq \offset+8(%rsp),%r10
 
	movq \offset+16(%rsp),%r9
 
	movq \offset+24(%rsp),%r8
 
	movq \offset+40(%rsp),%rcx
 
	movq \offset+48(%rsp),%rdx
 
	movq \offset+56(%rsp),%rsi
 
	movq \offset+64(%rsp),%rdi
 
	movq \offset+72(%rsp),%rax
 
	.endm
 
			
 
#define REST_SKIP 6*8			
 
	.macro SAVE_REST
 
	subq $REST_SKIP,%rsp
 
	CFI_ADJUST_CFA_OFFSET	REST_SKIP
 
	movq %rbx,5*8(%rsp) 
 
	CFI_REL_OFFSET	rbx,5*8
 
	movq %rbp,4*8(%rsp) 
 
	CFI_REL_OFFSET	rbp,4*8
 
	movq %r12,3*8(%rsp) 
 
	CFI_REL_OFFSET	r12,3*8
 
	movq %r13,2*8(%rsp) 
 
	CFI_REL_OFFSET	r13,2*8
 
	movq %r14,1*8(%rsp) 
 
	CFI_REL_OFFSET	r14,1*8
 
	movq %r15,(%rsp) 
 
	CFI_REL_OFFSET	r15,0*8
 
	.endm		
 

	
 
	.macro RESTORE_REST
 
	movq (%rsp),%r15
 
	CFI_RESTORE r15
 
	movq 1*8(%rsp),%r14
 
	CFI_RESTORE r14
 
	movq 2*8(%rsp),%r13
 
	CFI_RESTORE r13
 
	movq 3*8(%rsp),%r12
 
	CFI_RESTORE r12
 
	movq 4*8(%rsp),%rbp
 
	CFI_RESTORE rbp
 
	movq 5*8(%rsp),%rbx
 
	CFI_RESTORE rbx
 
	addq $REST_SKIP,%rsp
 
	CFI_ADJUST_CFA_OFFSET	-(REST_SKIP)
 
	.endm
 
		
 
	.macro SAVE_ALL
 
	SAVE_ARGS
 
	SAVE_REST
 
	.endm
 
		
 
	.macro RESTORE_ALL addskip=0
 
	RESTORE_REST
 
	RESTORE_ARGS 0,\addskip
 
	.endm
 

	
 
	.macro icebp
 
	.byte 0xf1
 
	.endm