diff options
Diffstat (limited to 'pkg')
| -rw-r--r-- | pkg/ifuzz/powerpc/pseudo.go | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/pkg/ifuzz/powerpc/pseudo.go b/pkg/ifuzz/powerpc/pseudo.go index 4790cea9f..f67a38907 100644 --- a/pkg/ifuzz/powerpc/pseudo.go +++ b/pkg/ifuzz/powerpc/pseudo.go @@ -12,6 +12,8 @@ import ( const ( // Valid hcall humbers at the momemt are: 4..0x450. MaxHcall = 0x450 // MAX_HCALL + SprnSrr0 = 0x01A // pc for rfid (SPRN_SRR0) + SprnSrr1 = 0x01B // msr for rfid (SPRN_SRR1) ) // nolint:dupl @@ -56,6 +58,16 @@ func (insnset *InsnSet) initPseudo() { return gen.text }, }) + insnset.Insns = append(insnset.Insns, &Insn{ + Name: "PSEUDO_rfid", + Priv: true, + Pseudo: true, + generator: func(cfg *iset.Config, r *rand.Rand) []byte { + gen := makeGen(insnset, cfg, r) + gen.rfid() + return gen.text + }, + }) } type generator struct { @@ -116,3 +128,18 @@ func (gen *generator) rtas() { gen.byte(imap.sc(1)) } + +func (gen *generator) rfid() { + imap := gen.imap + tmpreg := uint(gen.r.Intn(32)) + + // SRR0 contains a PC + gen.byte(imap.ld64(tmpreg, iset.GenerateInt(gen.cfg, gen.r, 8))) + gen.byte(imap["mtspr"].enc(map[string]uint{"RS": tmpreg, "SPR": SprnSrr0})) + + // SRR1 contains an MSR + gen.byte(imap.ld64(tmpreg, gen.r.Uint64())) + gen.byte(imap["mtspr"].enc(map[string]uint{"RS": tmpreg, "SPR": SprnSrr1})) + + gen.byte(imap["rfid"].enc(map[string]uint{})) +} |