1 <!-- Instructions here described in PowerISA Version 3.0 B Book 1 -->
3 <!-- 3.3.1 System Linkage Instructions Page 952 - 956 -->
5 <!-- These instructions provide the means by which a program can call upon the system to perform a service. -->
18 SRR1[0:32] <- MSR[0:32]
19 SRR1[37:41] <- MSR[37:41]
20 SRR1[48:63] <- MSR[48:63]
22 NIA <- 0x0000_0000_0000_0C00
24 Special Registers Altered:
28 # System Call Vectored
37 SRR1[33:36] <- undefined([0]*4)
38 SRR1[42:47] <- undefined([0]*6)
39 SRR1[0:32] <- MSR[0:32]
40 SRR1[37:41] <- MSR[37:41]
41 SRR1[48:63] <- MSR[48:63]
45 Special Registers Altered:
49 # Return From System Call Vectored
57 if (MSR[29:31] != 0b010) | (CTR[29:31] != 0b000) then
58 MSR[29:31] <- CTR[29:31]
63 MSR[4:28] <- CTR[4:28]
65 MSR[37:41] <- CTR[37:41]
66 MSR[49:50] <- CTR[49:50]
67 MSR[52:57] <- CTR[52:57]
68 MSR[60:63] <- CTR[60:63]
69 NIA <-iea LR[0:61] || 0b00
71 Special Registers Altered:
75 # Return From Interrupt Doubleword
83 MSR[51] <- (MSR[3] & SRR1[51]) | ((¬MSR[3] & MSR[51]))
84 MSR[3] <- (MSR[3] & SRR1[3])
85 if (MSR[29:31] != 0b010) | (SRR1[29:31] != 0b000) then
86 MSR[29:31] <- SRR1[29:31]
87 MSR[48] <- SRR1[48] | SRR1[49]
88 MSR[58] <- SRR1[58] | SRR1[49]
89 MSR[59] <- SRR1[59] | SRR1[49]
91 MSR[4:28] <- SRR1[4:28]
93 MSR[37:41] <- SRR1[37:41]
94 MSR[49:50] <- SRR1[49:50]
95 MSR[52:57] <- SRR1[52:57]
96 MSR[60:63] <- SRR1[60:63]
97 NIA <-iea SRR0[0:61] || 0b00
99 Special Registers Altered:
103 # Hypervisor Return From Interrupt Doubleword
111 if (MSR[29:31] != 0b010) | (HSRR1[29:31] != 0b000) then
112 MSR[29:31] <- HSRR1[29:31]
113 MSR[48] <- HSRR1[48] | HSRR1[49]
114 MSR[58] <- HSRR1[58] | HSRR1[49]
115 MSR[59] <- HSRR1[59] | HSRR1[49]
116 MSR[0:28] <- HSRR1[0:28]
118 MSR[37:41] <- HSRR1[37:41]
119 MSR[49:57] <- HSRR1[49:57]
120 MSR[60:63] <- HSRR1[60:63]
121 NIA <-iea HSRR0[0:61] || 0b00
123 Special Registers Altered:
127 <!-- Checked March 2021 -->