From: Lauri Kasanen <cand@gmx.com>
Date: Thu, 27 May 2021 15:25:11 +0000 (+0300)
Subject: KVM_SET_FPU isn't implemented on ppc, bah
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=81e453e2d0c1852055654de9582aa350d451528f;p=kvm-minippc.git

KVM_SET_FPU isn't implemented on ppc, bah
---

diff --git a/main.c b/main.c
index 0ace488..cf98fe3 100644
--- a/main.c
+++ b/main.c
@@ -196,6 +196,34 @@ static void load(const char arg[], uint8_t *ram) {
 	fclose(f);
 }
 
+static void setfpregs(const int vcpu, struct kvm_fpu *fpregs) {
+	// KVM_[SG]ET_FPU isn't supported on PPC, we have to move individual regs...
+	unsigned i;
+	for (i = 0; i < 32; i++) {
+		struct kvm_one_reg r = {
+			.id = KVM_REG_PPC_FPR(i),
+			.addr = (uint64_t) &fpregs->fpr[i]
+		};
+
+		if (ioctl(vcpu, KVM_SET_ONE_REG, &r) != 0)
+			abort();
+	}
+}
+
+static void getfpregs(const int vcpu, struct kvm_fpu *fpregs) {
+	// KVM_[SG]ET_FPU isn't supported on PPC, we have to move individual regs...
+	unsigned i;
+	for (i = 0; i < 32; i++) {
+		struct kvm_one_reg r = {
+			.id = KVM_REG_PPC_FPR(i),
+			.addr = (uint64_t) &fpregs->fpr[i]
+		};
+
+		if (ioctl(vcpu, KVM_GET_ONE_REG, &r) != 0)
+			abort();
+	}
+}
+
 int main(int argc, char **argv) {
 
 	const struct option longopts[] = {
@@ -358,8 +386,7 @@ int main(int argc, char **argv) {
 
 	if (ioctl(vcpu, KVM_SET_REGS, &regs) == -1)
 		abort();
-	if (ioctl(vcpu, KVM_SET_FPU, &fpregs) == -1)
-		abort();
+	setfpregs(vcpu, &fpregs);
 
 	const struct kvm_guest_debug dbg = {
 		.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP