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Implement suword16() for the 32-bit ARMv6/v7 architecture.

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This fixes compilation of usb(4) after 0ec590d24e .

MFC after:	1 week
Sponsored by:	NVIDIA Networking
This commit is contained in:
Hans Petter Selasky 2021-12-19 12:12:58 +01:00
parent 46e0c03795
commit 516df15582
1 changed files with 29 additions and 0 deletions
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29
sys/arm/arm/fusu.S
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@ -212,6 +212,35 @@ fusupcbfaulttext:
.align 2
#endif
/*
* suword16(caddr_t uaddr, int x);
* Store an uint16_t in the user's address space.
*/
ENTRY(suword16)
ldr r3, =(VM_MAXUSER_ADDRESS-3)
cmp r0, r3
mvncs r0, #0
RETc(cs)
GET_PCB(r2)
ldr r2, [r2]
#ifdef DIAGNOSTIC
teq r2, #0x00000000
beq .Lfusupcbfault
#endif
adr r3, .Lfusufault
str r3, [r2, #PCB_ONFAULT]
strht r1, [r0]
mov r0, #0x00000000
str r0, [r2, #PCB_ONFAULT]
RET
END(suword16)
/*
* suword(caddr_t uaddr, int x);
* Store an int in the user's address space.