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Updated and reorganized the comments for the fetch and store families of

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functions.
This commit is contained in:
Bruce Evans 2004-05-21 16:08:26 +00:00
parent 2151041f22
commit 912f07a626
1 changed files with 10 additions and 21 deletions
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31
sys/i386/i386/support.s
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@ -1221,10 +1221,10 @@ ENTRY(casuptr)
ret
/*
* fu{byte,sword,word} - MP SAFE
*
* Fetch a byte (sword, word) from user memory
* Fetch (load) a 32-bit word, a 16-bit word, or an 8-bit byte from user
* memory. All these functions are MPSAFE.
*/
ALTENTRY(fuword32)
ENTRY(fuword)
movl PCPU(CURPCB),%ecx
@ -1239,9 +1239,10 @@ ENTRY(fuword)
ret
/*
* These two routines are called from the profiling code, potentially
* at interrupt time. If they fail, that's okay, good things will
* happen later. Fail all the time for now - until the trap code is
* fuswintr() and suswintr() are specialized variants of fuword16() and
* suword16(), respectively. They are called from the profiling code,
* potentially at interrupt time. If they fail, that's okay; good things
* will happen later. They always fail for now, until the trap code is
* able to deal with this.
*/
ALTENTRY(suswintr)
@ -1249,9 +1250,6 @@ ENTRY(fuswintr)
movl $-1,%eax
ret
/*
* fuword16 - MP SAFE
*/
ENTRY(fuword16)
movl PCPU(CURPCB),%ecx
movl $fusufault,PCB_ONFAULT(%ecx)
@ -1264,9 +1262,6 @@ ENTRY(fuword16)
movl $0,PCB_ONFAULT(%ecx)
ret
/*
* fubyte - MP SAFE
*/
ENTRY(fubyte)
movl PCPU(CURPCB),%ecx
movl $fusufault,PCB_ONFAULT(%ecx)
@ -1288,10 +1283,10 @@ fusufault:
ret
/*
* su{byte,sword,word} - MP SAFE (if not I386_CPU)
*
* Write a byte (word, longword) to user memory
* Store a 32-bit word, a 16-bit word, or an 8-bit byte to user memory.
* All these functions are MPSAFE unless I386_CPU is configured.
*/
ALTENTRY(suword32)
ENTRY(suword)
movl PCPU(CURPCB),%ecx
@ -1336,9 +1331,6 @@ ENTRY(suword)
movl %eax,PCB_ONFAULT(%ecx)
ret
/*
* suword16 - MP SAFE (if not I386_CPU)
*/
ENTRY(suword16)
movl PCPU(CURPCB),%ecx
movl $fusufault,PCB_ONFAULT(%ecx)
@ -1382,9 +1374,6 @@ ENTRY(suword16)
movl %eax,PCB_ONFAULT(%ecx)
ret
/*
* subyte - MP SAFE (if not I386_CPU)
*/
ENTRY(subyte)
movl PCPU(CURPCB),%ecx
movl $fusufault,PCB_ONFAULT(%ecx)