Acelogic
1510d8c6ce
An EL2 monitor/hypervisor and toolchain that boots macOS 27 on the ASUS A16 (Snapdragon X2 Elite), with an Adreno Metal plug-in and IOGPU kext, and air2ir3, an AIR to Mesa ir3 shader compiler. MIT, with GPL-2.0 components listed in LICENSE and THIRD_PARTY_NOTICES.md. No Apple, Qualcomm, ASUS or Microsoft binaries are included.
42 lines
2.0 KiB
C
42 lines
2.0 KiB
C
/* SPDX-License-Identifier: MIT */
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#include "sprr.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define CHECK(x) do {checks++;if(!(x)){fprintf(stderr,"FAIL %u: %s\n",__LINE__,#x);exit(1);}} while(0)
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static unsigned checks;
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struct backend {struct sprr_state *s;uint64_t before,installed;unsigned calls,fail;};
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static int change(void *ctx,uint64_t pperm)
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{
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struct backend *b=ctx;CHECK(b->s->pperm==b->before);b->calls++;
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if(b->fail)return 0;
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b->installed=pperm;return 1;
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}
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static uint64_t value(unsigned n)
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{return SPRR_PPERM_INITIAL|((uint64_t)(n&1)<<8)|((uint64_t)(n>>1)<<36);}
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int main(void)
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{
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for(unsigned cpu=0;cpu<6;cpu++)for(unsigned old=0;old<4;old++)for(unsigned next=0;next<4;next++) {
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struct sprr_state cpus[6]={0};
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for(unsigned i=0;i<6;i++){sprr_root_reset(&cpus[i],10);cpus[i].pperm=value(old);}
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struct sprr_state before[6];memcpy(before,cpus,sizeof cpus);
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struct backend b={.s=&cpus[cpu],.before=value(old),.installed=value(old),.fail=1};
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uint64_t wanted=value(next),readback=0;
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CHECK(sprr_access_with(b.s,SPRR_PPERM,0,&wanted,change,&b)==(old==next ? SPRR_OK : SPRR_VIEW_FAILED));
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CHECK(b.s->pperm==value(old) && b.installed==value(old));
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b.fail=0;
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CHECK(sprr_access_with(b.s,SPRR_PPERM,0,&wanted,change,&b)==SPRR_OK);
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CHECK(b.s->pperm==wanted && b.installed==wanted);
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CHECK(sprr_access(b.s,SPRR_PPERM,1,&readback)==SPRR_OK && readback==wanted);
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unsigned calls=b.calls;b.before=wanted;
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for(unsigned bit=0;bit<64;bit++)if(bit!=8 && bit!=36) {
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uint64_t bad=wanted^(UINT64_C(1)<<bit);
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CHECK(sprr_access_with(b.s,SPRR_PPERM,0,&bad,change,&b)==SPRR_WRITE_UNIMPLEMENTED);
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CHECK(b.calls==calls && b.s->pperm==wanted && b.installed==wanted);
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}
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for(unsigned i=0;i<6;i++)if(i!=cpu)CHECK(!memcmp(&cpus[i],&before[i],sizeof cpus[i]));
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sprr_root_reset(b.s,0);CHECK(b.s->pperm==SPRR_PPERM_INITIAL);
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}
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printf("PASS: %u PPERM copy-grant/restore and selector2 interaction checks\n",checks);
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}
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