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Implement x86 dtrace_invop_(un)init() in C.

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There is no reason for these routines to be written in assembly.  In
the ports of DTrace to other platforms, they are already written in C.
No functional change intended.

MFC after:	1 week
Sponsored by:	Netflix
This commit is contained in:
Mark Johnston 2019-09-23 15:08:17 +00:00
parent 07bf14bb72
commit 9093dd9a66
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=352627
4 changed files with 38 additions and 34 deletions
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16
sys/cddl/dev/dtrace/amd64/dtrace_asm.S
View File

@ -149,22 +149,6 @@ bp_ret:
END(dtrace_invop_start)
/*
void dtrace_invop_init(void)
*/
ENTRY(dtrace_invop_init)
movq $dtrace_invop_start, dtrace_invop_jump_addr(%rip)
ret
END(dtrace_invop_init)
/*
void dtrace_invop_uninit(void)
*/
ENTRY(dtrace_invop_uninit)
movq $0, dtrace_invop_jump_addr(%rip)
ret
END(dtrace_invop_uninit)
/*
greg_t dtrace_getfp(void)
*/

20
sys/cddl/dev/dtrace/amd64/dtrace_subr.c
View File

@ -48,8 +48,12 @@
#include <vm/pmap.h>
extern void dtrace_getnanotime(struct timespec *tsp);
extern int (*dtrace_invop_jump_addr)(struct trapframe *);
int dtrace_invop(uintptr_t, struct trapframe *, uintptr_t);
int dtrace_invop(uintptr_t, struct trapframe *, uintptr_t);
int dtrace_invop_start(struct trapframe *frame);
void dtrace_invop_init(void);
void dtrace_invop_uninit(void);
typedef struct dtrace_invop_hdlr {
int (*dtih_func)(uintptr_t, struct trapframe *, uintptr_t);
@ -109,6 +113,20 @@ dtrace_invop_remove(int (*func)(uintptr_t, struct trapframe *, uintptr_t))
kmem_free(hdlr, 0);
}
void
dtrace_invop_init(void)
{
dtrace_invop_jump_addr = dtrace_invop_start;
}
void
dtrace_invop_uninit(void)
{
dtrace_invop_jump_addr = NULL;
}
/*ARGSUSED*/
void
dtrace_toxic_ranges(void (*func)(uintptr_t base, uintptr_t limit))

16
sys/cddl/dev/dtrace/i386/dtrace_asm.S
View File

@ -134,22 +134,6 @@ invop_nop:
END(dtrace_invop_start)
/*
void dtrace_invop_init(void)
*/
ENTRY(dtrace_invop_init)
movl $dtrace_invop_start, dtrace_invop_jump_addr
ret
END(dtrace_invop_init)
/*
void dtrace_invop_uninit(void)
*/
ENTRY(dtrace_invop_uninit)
movl $0, dtrace_invop_jump_addr
ret
END(dtrace_invop_uninit)
/*
greg_t dtrace_getfp(void)
*/

20
sys/cddl/dev/dtrace/i386/dtrace_subr.c
View File

@ -51,8 +51,12 @@
extern uintptr_t kernelbase;
extern void dtrace_getnanotime(struct timespec *tsp);
extern int (*dtrace_invop_jump_addr)(struct trapframe *);
int dtrace_invop(uintptr_t, struct trapframe *, uintptr_t);
int dtrace_invop(uintptr_t, struct trapframe *, uintptr_t);
int dtrace_invop_start(struct trapframe *frame);
void dtrace_invop_init(void);
void dtrace_invop_uninit(void);
typedef struct dtrace_invop_hdlr {
int (*dtih_func)(uintptr_t, struct trapframe *, uintptr_t);
@ -112,6 +116,20 @@ dtrace_invop_remove(int (*func)(uintptr_t, struct trapframe *, uintptr_t))
kmem_free(hdlr, 0);
}
void
dtrace_invop_init(void)
{
dtrace_invop_jump_addr = dtrace_invop_start;
}
void
dtrace_invop_uninit(void)
{
dtrace_invop_jump_addr = NULL;
}
void
dtrace_toxic_ranges(void (*func)(uintptr_t base, uintptr_t limit))
{