diff options
| author | Michael Shalayeff <mickey@cvs.openbsd.org> | 1996-05-04 16:38:08 +0000 |
|---|---|---|
| committer | Michael Shalayeff <mickey@cvs.openbsd.org> | 1996-05-04 16:38:08 +0000 |
| commit | 2362af25f630b99da3d5d042b3c182d0b687ace5 (patch) | |
| tree | 3e024872658f41d34159ab8feedc37e25ee66286 /sys/arch | |
| parent | f6a26a5c8469534f8df50b62b341b4d621b7d6e0 (diff) | |
from CMU(CODA or MACH, by Robert Baron):
Under the GPROF conditional emit a call to mcount for bcopy, bzero,
copyin, and copyout, so they can be profiled. During a kernel build
these 4 routines account for 14% of the time in the kernel.
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/i386/i386/locore.s | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/sys/arch/i386/i386/locore.s b/sys/arch/i386/i386/locore.s index 65f33efa92e..9d6eb1775d3 100644 --- a/sys/arch/i386/i386/locore.s +++ b/sys/arch/i386/i386/locore.s @@ -133,6 +133,20 @@ .set _APTD,(_APTmap + APTDPTDI * NBPG) .set _APTDpde,(_PTD + APTDPTDI * 4) # XXX 4 == sizeof pde +#ifdef GPROF +#define PENTRY(name) \ + ENTRY(name) \ + pushl %ebp \ + movl %esp,%ebp \ + pushl %ebx \ + pushl _cpl \ + movl $0,_cpl \ + call _Xspllower \ + call mcount \ + popl _cpl \ + leal 4(%esp),%esp \ + popl %ebp +#endif #define ENTRY(name) .globl _/**/name; ALIGN_TEXT; _/**/name: #define ALTENTRY(name) .globl _/**/name; _/**/name: @@ -801,8 +815,14 @@ ENTRY(bcopyw) * bcopy(caddr_t from, caddr_t to, size_t len); * Copy len bytes. */ +#ifdef GPROF +ENTRY(ovbcopy) + jmp _bcopy +PENTRY(bcopy) +#else ENTRY(bcopy) ALTENTRY(ovbcopy) +#endif pushl %esi pushl %edi movl 12(%esp),%esi @@ -853,7 +873,11 @@ ALTENTRY(ovbcopy) * copyout(caddr_t from, caddr_t to, size_t len); * Copy len bytes into the user's address space. */ +#ifdef GPROF +PENTRY(copyout) +#else ENTRY(copyout) +#endif pushl %esi pushl %edi movl _curpcb,%eax @@ -948,7 +972,11 @@ ENTRY(copyout) * copyin(caddr_t from, caddr_t to, size_t len); * Copy len bytes from the user's address space. */ +#ifdef GPROF +PENTRY(copyin) +#else ENTRY(copyin) +#endif pushl %esi pushl %edi movl _curpcb,%eax @@ -2128,7 +2156,11 @@ syscall1: * write len zero bytes to the string b. */ +#ifdef GPROF +PENTRY(bzero) +#else ENTRY(bzero) +#endif pushl %edi movl 8(%esp),%edi movl 12(%esp),%edx |