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5e: push ERRMAX for note message on stack avoiding unaligned stack pointer

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cinap_lenrek 2014-09-03 19:23:55 +02:00
parent b864727723
commit e890c3d943
1 changed files with 3 additions and 3 deletions
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6
sys/src/cmd/5e/proc.c
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@ -385,9 +385,9 @@ donote(char *msg, ulong type)
ureg[16] = P->CPSR; ureg[16] = P->CPSR;
ureg[17] = P->R[15]; ureg[17] = P->R[15];
P->R[13] = uregp; P->R[13] = uregp;
msgp = P->R[13] -= strlen(msg) + 1; msgp = P->R[13] -= ERRMAX;
msgb = vaddrnol(msgp, strlen(msg) + 1); msgb = vaddrnol(msgp, ERRMAX);
strcpy(msgb, msg); strncpy(msgb, msg, ERRMAX);
P->R[13] -= 3 * 4; P->R[13] -= 3 * 4;
sp = vaddrnol(P->R[13], 3 * 4); sp = vaddrnol(P->R[13], 3 * 4);
sp[0] = 0; sp[0] = 0;