esp (reference) in projects: xv6-public

18   # Call trap(tf), where tf=%esp
19   pushl %esp
21   addl $4, %esp
31   addl $0x8, %esp  # trapno and errcode

H A D

TRICKS

12 %esp and then jumps to trapret, which pops the 
14 came in between the mov tf, %esp and the iret that
23 *is* a valid %esp that can hold interrupt state.
26 a cli before the mov tf, %esp.

H A D

x86.h

180   uint esp;  member

H A D

mmu.h

125   uint *esp;  member

/xv6-public/
H A D	trapasm.S	`18 # Call trap(tf), where tf=%esp 19 pushl %esp 21 addl $4, %esp 31 addl $0x8, %esp # trapno and errcode`
H A D	swtch.S	`11 movl 4(%esp), %eax 12 movl 8(%esp), %edx 21 movl %esp, (%eax) 22 movl %edx, %esp`
H A D	TRICKS	`12 %esp and then jumps to trapret, which pops the 14 came in between the mov tf, %esp and the iret that 23 is a valid %esp that can hold interrupt state. 26 a cli before the mov tf, %esp.`
H A D	syscall.c	`52 return fetchint((myproc()->tf->esp) + 4 + 4*n, ip); in argint()`
H A D	x86.h	`180 uint esp; member`
H A D	exec.c	`101 curproc->tf->esp = sp; in exec()`
H A D	mmu.h	`125 uint *esp; member`
H A D	proc.c	`139 p->tf->esp = PGSIZE; in userinit()`

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