1 // See LICENSE for license details.
6 #define SR_S 0x00000001
7 #define SR_PS 0x00000002
8 #define SR_EI 0x00000004
9 #define SR_PEI 0x00000008
10 #define SR_EF 0x00000010
11 #define SR_U64 0x00000020
12 #define SR_S64 0x00000040
13 #define SR_VM 0x00000080
14 #define SR_EA 0x00000100
15 #define SR_IM 0x00FF0000
16 #define SR_IP 0xFF000000
17 #define SR_ZERO ~(SR_S|SR_PS|SR_EI|SR_PEI|SR_EF|SR_U64|SR_S64|SR_VM|SR_EA|SR_IM|SR_IP)
18 #define SR_IM_SHIFT 16
19 #define SR_IP_SHIFT 24
24 #define PCR_BADVADDR 3
35 #define PCR_SEND_IPI 14
36 #define PCR_CLR_IPI 15
37 #define PCR_VECBANK 18
41 #define PCR_FROMHOST 31
51 #define CAUSE_MISALIGNED_FETCH 0
52 #define CAUSE_FAULT_FETCH 1
53 #define CAUSE_ILLEGAL_INSTRUCTION 2
54 #define CAUSE_PRIVILEGED_INSTRUCTION 3
55 #define CAUSE_FP_DISABLED 4
56 #define CAUSE_SYSCALL 6
57 #define CAUSE_BREAKPOINT 7
58 #define CAUSE_MISALIGNED_LOAD 8
59 #define CAUSE_MISALIGNED_STORE 9
60 #define CAUSE_FAULT_LOAD 10
61 #define CAUSE_FAULT_STORE 11
63 // page table entry (PTE) fields
64 #define PTE_V 0x001 // Entry is a page Table descriptor
65 #define PTE_T 0x002 // Entry is a page Table, not a terminal node
66 #define PTE_G 0x004 // Global
67 #define PTE_UR 0x008 // User Write permission
68 #define PTE_UW 0x010 // User Read permission
69 #define PTE_UX 0x020 // User eXecute permission
70 #define PTE_SR 0x040 // Supervisor Read permission
71 #define PTE_SW 0x080 // Supervisor Write permission
72 #define PTE_SX 0x100 // Supervisor eXecute permission
73 #define PTE_PERM (PTE_SR | PTE_SW | PTE_SX | PTE_UR | PTE_UW | PTE_UX)
78 # define RISCV_PGLEVELS 3
79 # define RISCV_PGSHIFT 13
81 # define RISCV_PGLEVELS 2
82 # define RISCV_PGSHIFT 12
84 #define RISCV_PGLEVEL_BITS 10
85 #define RISCV_PGSIZE (1 << RISCV_PGSHIFT)
89 #define mtpcr(reg,val) ({ long __tmp = (long)(val), __tmp2; \
90 asm volatile ("mtpcr %0,%1,cr%2" : "=r"(__tmp2) : "r"(__tmp),"i"(reg)); \
93 #define mfpcr(reg) ({ long __tmp; \
94 asm volatile ("mfpcr %0,cr%1" : "=r"(__tmp) : "i"(reg)); \
97 #define setpcr(reg,val) ({ long __tmp; \
98 asm volatile ("setpcr %0,cr%2,%1" : "=r"(__tmp) : "i"(val), "i"(reg)); \
101 #define clearpcr(reg,val) ({ long __tmp; \
102 asm volatile ("clearpcr %0,cr%2,%1" : "=r"(__tmp) : "i"(val), "i"(reg)); \
105 #define rdcycle() ({ unsigned long __tmp; \
106 asm volatile ("rdcycle %0" : "=r"(__tmp)); \