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VexRiscv
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PMP registers are now WARL

This commit is contained in:
Samuel Lindemer 2021-01-20 09:27:35 +01:00
parent ed68c8cf04
commit 828ea96006
6 changed files with 293 additions and 245 deletions
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126
src/main/scala/vexriscv/plugin/PmpPlugin.scala
View File

@ -70,61 +70,78 @@ case class PmpRegister(previous : PmpRegister) extends Area {
def NA4 = 2
def NAPOT = 3
// Software-accessible CSR interface
val csr = new Area {
val state = new Area {
val r, w, x = Reg(Bool)
val l = RegInit(False)
val a = Reg(UInt(2 bits)) init(0)
val addr = Reg(UInt(32 bits))
}
// Active region bounds and permissions (internal)
// CSR writes connect to these signals rather than the internal state
// registers. This makes locking and WARL possible.
val csr = new Area {
val r, w, x = Bool
val l = Bool
val a = UInt(2 bits)
val addr = UInt(32 bits)
}
// Last assignment wins; nothing happens if a user-initiated write did not
// occur on this clock cycle.
csr.r := state.r
csr.w := state.w
csr.x := state.x
csr.l := state.l
csr.a := state.a
csr.addr := state.addr
// Computed PMP region bounds
val region = new Area {
val r, w, x = Reg(Bool)
val l, valid = RegInit(False)
val valid = Bool
val start, end = Reg(UInt(32 bits))
}
when(~region.l) {
region.r := csr.r
region.w := csr.w
region.x := csr.x
region.l := csr.l
val shifted = csr.addr |<< 2
region.valid := True
when(~state.l) {
state.r := csr.r
state.w := csr.w
state.x := csr.x
state.l := csr.l
state.a := csr.a
state.addr := csr.addr
switch(csr.a) {
if (csr.l == True & csr.a == TOR) {
previous.state.l := True
}
}
is(TOR) {
if (previous == null) {
region.start := 0
} else {
region.start := previous.region.end
}
if (csr.l == True) {
previous.region.l := True
}
region.end := shifted
val shifted = csr.addr |<< 2
region.valid := True
switch(state.a) {
is(TOR) {
if (previous == null) {
region.start := 0
} else {
region.start := previous.region.end
}
region.end := shifted
}
is(NA4) {
region.start := shifted
region.end := shifted + 4
}
is(NA4) {
region.start := shifted
region.end := shifted + 4
}
is(NAPOT) {
val mask = csr.addr & ~(csr.addr + 1)
val masked = (csr.addr & ~mask) |<< 2
region.start := masked
region.end := masked + ((mask + 1) |<< 3)
}
default {
region.end := shifted
region.valid := False
}
is(NAPOT) {
val mask = state.addr & ~(state.addr + 1)
val masked = (state.addr & ~mask) |<< 2
region.start := masked
region.end := masked + ((mask + 1) |<< 3)
}
default {
region.end := shifted
region.valid := False
}
}
}
@ -162,12 +179,25 @@ class PmpPlugin(regions : Int, ioRange : UInt => Bool) extends Plugin[VexRiscv]
} else {
pmps += PmpRegister(pmps.last)
}
csrService.rw(0x3b0 + i, pmps(i).csr.addr)
csrService.r(0x3b0 + i, pmps(i).state.addr)
csrService.w(0x3b0 + i, pmps(i).csr.addr)
}
// Instantiate pmpcfg0 ... pmpcfg# CSRs.
for (i <- 0 until (regions / 4)) {
csrService.rw(0x3a0 + i,
csrService.r(0x3a0 + i,
31 -> pmps((i * 4) + 3).state.l, 23 -> pmps((i * 4) + 2).state.l,
15 -> pmps((i * 4) + 1).state.l, 7 -> pmps((i * 4) ).state.l,
27 -> pmps((i * 4) + 3).state.a, 26 -> pmps((i * 4) + 3).state.x,
25 -> pmps((i * 4) + 3).state.w, 24 -> pmps((i * 4) + 3).state.r,
19 -> pmps((i * 4) + 2).state.a, 18 -> pmps((i * 4) + 2).state.x,
17 -> pmps((i * 4) + 2).state.w, 16 -> pmps((i * 4) + 2).state.r,
11 -> pmps((i * 4) + 1).state.a, 10 -> pmps((i * 4) + 1).state.x,
9 -> pmps((i * 4) + 1).state.w, 8 -> pmps((i * 4) + 1).state.r,
3 -> pmps((i * 4) ).state.a, 2 -> pmps((i * 4) ).state.x,
1 -> pmps((i * 4) ).state.w, 0 -> pmps((i * 4) ).state.r
)
csrService.w(0x3a0 + i,
31 -> pmps((i * 4) + 3).csr.l, 23 -> pmps((i * 4) + 2).csr.l,
15 -> pmps((i * 4) + 1).csr.l, 7 -> pmps((i * 4) ).csr.l,
27 -> pmps((i * 4) + 3).csr.a, 26 -> pmps((i * 4) + 3).csr.x,
@ -188,10 +218,10 @@ class PmpPlugin(regions : Int, ioRange : UInt => Bool) extends Plugin[VexRiscv]
port.bus.rsp.physicalAddress := address
// Only the first matching PMP region applies.
val hits = pmps.map(pmp => pmp.region.valid &&
pmp.region.start <= address &&
pmp.region.end > address &&
(pmp.region.l || ~privilegeService.isMachine()))
val hits = pmps.map(pmp => pmp.region.valid &
pmp.region.start <= address &
pmp.region.end > address &
(pmp.state.l | ~privilegeService.isMachine()))
// M-mode has full access by default, others have none.
when(CountOne(hits) === 0) {
@ -199,9 +229,9 @@ class PmpPlugin(regions : Int, ioRange : UInt => Bool) extends Plugin[VexRiscv]
port.bus.rsp.allowWrite := privilegeService.isMachine()
port.bus.rsp.allowExecute := privilegeService.isMachine()
} otherwise {
port.bus.rsp.allowRead := MuxOH(OHMasking.first(hits), pmps.map(_.region.r))
port.bus.rsp.allowWrite := MuxOH(OHMasking.first(hits), pmps.map(_.region.w))
port.bus.rsp.allowExecute := MuxOH(OHMasking.first(hits), pmps.map(_.region.x))
port.bus.rsp.allowRead := MuxOH(OHMasking.first(hits), pmps.map(_.state.r))
port.bus.rsp.allowWrite := MuxOH(OHMasking.first(hits), pmps.map(_.state.w))
port.bus.rsp.allowExecute := MuxOH(OHMasking.first(hits), pmps.map(_.state.x))
}
port.bus.rsp.isIoAccess := ioRange(port.bus.rsp.physicalAddress)

314
src/test/cpp/raw/pmp/build/pmp.asm
View File

@ -17,176 +17,184 @@ Disassembly of section .crt_section:
80000018 <test0>:
80000018: 00000e13 li t3,0
8000001c: 00000f17 auipc t5,0x0
80000020: 250f0f13 addi t5,t5,592 # 8000026c <fail>
80000020: 270f0f13 addi t5,t5,624 # 8000028c <fail>
80000024: 800000b7 lui ra,0x80000
80000028: 80008237 lui tp,0x80008
8000002c: deadc137 lui sp,0xdeadc
80000030: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc77>
80000034: 0020a023 sw sp,0(ra) # 80000000 <pass+0xfffffd88>
80000038: 00222023 sw sp,0(tp) # 80008000 <pass+0x7d88>
80000030: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc57>
80000034: 0020a023 sw sp,0(ra) # 80000000 <pass+0xfffffd68>
80000038: 00222023 sw sp,0(tp) # 80008000 <pass+0x7d68>
8000003c: 0000a183 lw gp,0(ra)
80000040: 22311663 bne sp,gp,8000026c <fail>
80000040: 24311663 bne sp,gp,8000028c <fail>
80000044: 00022183 lw gp,0(tp) # 0 <_start-0x80000000>
80000048: 22311263 bne sp,gp,8000026c <fail>
80000048: 24311263 bne sp,gp,8000028c <fail>
8000004c: 071202b7 lui t0,0x7120
80000050: 3a029073 csrw pmpcfg0,t0
80000054: 191f02b7 lui t0,0x191f0
80000058: 30428293 addi t0,t0,772 # 191f0304 <_start-0x66e0fcfc>
8000005c: 3a129073 csrw pmpcfg1,t0
80000060: 000f02b7 lui t0,0xf0
80000064: 50628293 addi t0,t0,1286 # f0506 <_start-0x7ff0fafa>
80000068: 3a229073 csrw pmpcfg2,t0
8000006c: 0f1e22b7 lui t0,0xf1e2
80000070: 90028293 addi t0,t0,-1792 # f1e1900 <_start-0x70e1e700>
80000074: 3a329073 csrw pmpcfg3,t0
80000078: 200002b7 lui t0,0x20000
8000007c: 3b029073 csrw pmpaddr0,t0
80000080: fff00293 li t0,-1
80000084: 3b129073 csrw pmpaddr1,t0
80000088: 200022b7 lui t0,0x20002
8000008c: 3b229073 csrw pmpaddr2,t0
80000090: 200042b7 lui t0,0x20004
80000094: fff28293 addi t0,t0,-1 # 20003fff <_start-0x5fffc001>
80000098: 3b329073 csrw pmpaddr3,t0
8000009c: 200042b7 lui t0,0x20004
800000a0: fff28293 addi t0,t0,-1 # 20003fff <_start-0x5fffc001>
800000a4: 3b429073 csrw pmpaddr4,t0
800000a8: 200042b7 lui t0,0x20004
800000ac: fff28293 addi t0,t0,-1 # 20003fff <_start-0x5fffc001>
800000b0: 3b529073 csrw pmpaddr5,t0
800000b4: 200022b7 lui t0,0x20002
800000b8: fff28293 addi t0,t0,-1 # 20001fff <_start-0x5fffe001>
800000bc: 3b629073 csrw pmpaddr6,t0
800000c0: 200062b7 lui t0,0x20006
800000c4: fff28293 addi t0,t0,-1 # 20005fff <_start-0x5fffa001>
800000c8: 3b729073 csrw pmpaddr7,t0
800000cc: 2000c2b7 lui t0,0x2000c
800000d0: 3b829073 csrw pmpaddr8,t0
800000d4: 2000d2b7 lui t0,0x2000d
800000d8: 3b929073 csrw pmpaddr9,t0
800000dc: fff00293 li t0,-1
800000e0: 3ba29073 csrw pmpaddr10,t0
800000e4: 00000293 li t0,0
800000e8: 3bb29073 csrw pmpaddr11,t0
800000ec: 00000293 li t0,0
800000f0: 3bc29073 csrw pmpaddr12,t0
80000054: 3a002373 csrr t1,pmpcfg0
80000058: 22629a63 bne t0,t1,8000028c <fail>
8000005c: 191f02b7 lui t0,0x191f0
80000060: 30428293 addi t0,t0,772 # 191f0304 <_start-0x66e0fcfc>
80000064: 3a129073 csrw pmpcfg1,t0
80000068: 000f02b7 lui t0,0xf0
8000006c: 50628293 addi t0,t0,1286 # f0506 <_start-0x7ff0fafa>
80000070: 3a229073 csrw pmpcfg2,t0
80000074: 0f1e22b7 lui t0,0xf1e2
80000078: 90028293 addi t0,t0,-1792 # f1e1900 <_start-0x70e1e700>
8000007c: 3a329073 csrw pmpcfg3,t0
80000080: 200002b7 lui t0,0x20000
80000084: 3b029073 csrw pmpaddr0,t0
80000088: 3b002373 csrr t1,pmpaddr0
8000008c: 20629063 bne t0,t1,8000028c <fail>
80000090: fff00293 li t0,-1
80000094: 3b129073 csrw pmpaddr1,t0
80000098: 200022b7 lui t0,0x20002
8000009c: 3b229073 csrw pmpaddr2,t0
800000a0: 200042b7 lui t0,0x20004
800000a4: fff28293 addi t0,t0,-1 # 20003fff <_start-0x5fffc001>
800000a8: 3b329073 csrw pmpaddr3,t0
800000ac: 200042b7 lui t0,0x20004
800000b0: fff28293 addi t0,t0,-1 # 20003fff <_start-0x5fffc001>
800000b4: 3b429073 csrw pmpaddr4,t0
800000b8: 200042b7 lui t0,0x20004
800000bc: fff28293 addi t0,t0,-1 # 20003fff <_start-0x5fffc001>
800000c0: 3b529073 csrw pmpaddr5,t0
800000c4: 200022b7 lui t0,0x20002
800000c8: fff28293 addi t0,t0,-1 # 20001fff <_start-0x5fffe001>
800000cc: 3b629073 csrw pmpaddr6,t0
800000d0: 200062b7 lui t0,0x20006
800000d4: fff28293 addi t0,t0,-1 # 20005fff <_start-0x5fffa001>
800000d8: 3b729073 csrw pmpaddr7,t0
800000dc: 2000c2b7 lui t0,0x2000c
800000e0: 3b829073 csrw pmpaddr8,t0
800000e4: 2000d2b7 lui t0,0x2000d
800000e8: 3b929073 csrw pmpaddr9,t0
800000ec: fff00293 li t0,-1
800000f0: 3ba29073 csrw pmpaddr10,t0
800000f4: 00000293 li t0,0
800000f8: 3bd29073 csrw pmpaddr13,t0
800000f8: 3bb29073 csrw pmpaddr11,t0
800000fc: 00000293 li t0,0
80000100: 3be29073 csrw pmpaddr14,t0
80000100: 3bc29073 csrw pmpaddr12,t0
80000104: 00000293 li t0,0
80000108: 3bf29073 csrw pmpaddr15,t0
8000010c: 00c10137 lui sp,0xc10
80000110: fee10113 addi sp,sp,-18 # c0ffee <_start-0x7f3f0012>
80000114: 0020a023 sw sp,0(ra)
80000118: 00222023 sw sp,0(tp) # 0 <_start-0x80000000>
8000011c: 0000a183 lw gp,0(ra)
80000120: 14311663 bne sp,gp,8000026c <fail>
80000124: 00000193 li gp,0
80000128: 00022183 lw gp,0(tp) # 0 <_start-0x80000000>
8000012c: 14311063 bne sp,gp,8000026c <fail>
80000108: 3bd29073 csrw pmpaddr13,t0
8000010c: 00000293 li t0,0
80000110: 3be29073 csrw pmpaddr14,t0
80000114: 00000293 li t0,0
80000118: 3bf29073 csrw pmpaddr15,t0
8000011c: 00c10137 lui sp,0xc10
80000120: fee10113 addi sp,sp,-18 # c0ffee <_start-0x7f3f0012>
80000124: 0020a023 sw sp,0(ra)
80000128: 00222023 sw sp,0(tp) # 0 <_start-0x80000000>
8000012c: 0000a183 lw gp,0(ra)
80000130: 14311e63 bne sp,gp,8000028c <fail>
80000134: 00000193 li gp,0
80000138: 00022183 lw gp,0(tp) # 0 <_start-0x80000000>
8000013c: 14311863 bne sp,gp,8000028c <fail>
80000130 <test1>:
80000130: 00100e13 li t3,1
80000134: 00000f17 auipc t5,0x0
80000138: 138f0f13 addi t5,t5,312 # 8000026c <fail>
8000013c: 079212b7 lui t0,0x7921
80000140: 80828293 addi t0,t0,-2040 # 7920808 <_start-0x786df7f8>
80000144: 3a029073 csrw pmpcfg0,t0
80000148: 800080b7 lui ra,0x80008
8000014c: deadc137 lui sp,0xdeadc
80000150: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc77>
80000154: 0020a023 sw sp,0(ra) # 80008000 <pass+0x7d88>
80000158: 00000f17 auipc t5,0x0
8000015c: 010f0f13 addi t5,t5,16 # 80000168 <test2>
80000160: 0000a183 lw gp,0(ra)
80000164: 1080006f j 8000026c <fail>
80000140 <test1>:
80000140: 00100e13 li t3,1
80000144: 00000f17 auipc t5,0x0
80000148: 148f0f13 addi t5,t5,328 # 8000028c <fail>
8000014c: 079212b7 lui t0,0x7921
80000150: 80828293 addi t0,t0,-2040 # 7920808 <_start-0x786df7f8>
80000154: 3a029073 csrw pmpcfg0,t0
80000158: 3a002373 csrr t1,pmpcfg0
8000015c: 12629863 bne t0,t1,8000028c <fail>
80000160: 800080b7 lui ra,0x80008
80000164: deadc137 lui sp,0xdeadc
80000168: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc57>
8000016c: 0020a023 sw sp,0(ra) # 80008000 <pass+0x7d68>
80000170: 00000f17 auipc t5,0x0
80000174: 010f0f13 addi t5,t5,16 # 80000180 <test2>
80000178: 0000a183 lw gp,0(ra)
8000017c: 1100006f j 8000028c <fail>
80000168 <test2>:
80000168: 00200e13 li t3,2
8000016c: 00000f17 auipc t5,0x0
80000170: 100f0f13 addi t5,t5,256 # 8000026c <fail>
80000174: 071202b7 lui t0,0x7120
80000178: 3a029073 csrw pmpcfg0,t0
8000017c: 800080b7 lui ra,0x80008
80000180: deadc137 lui sp,0xdeadc
80000184: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc77>
80000188: 0020a023 sw sp,0(ra) # 80008000 <pass+0x7d88>
8000018c: 00000f17 auipc t5,0x0
80000190: 010f0f13 addi t5,t5,16 # 8000019c <test3>
80000194: 0000a183 lw gp,0(ra)
80000198: 0d40006f j 8000026c <fail>
80000180 <test2>:
80000180: 00200e13 li t3,2
80000184: 00000f17 auipc t5,0x0
80000188: 108f0f13 addi t5,t5,264 # 8000028c <fail>
8000018c: 071202b7 lui t0,0x7120
80000190: 3a029073 csrw pmpcfg0,t0
80000194: 3a002373 csrr t1,pmpcfg0
80000198: 0e628a63 beq t0,t1,8000028c <fail>
8000019c: 800080b7 lui ra,0x80008
800001a0: deadc137 lui sp,0xdeadc
800001a4: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc57>
800001a8: 0020a023 sw sp,0(ra) # 80008000 <pass+0x7d68>
800001ac: 00000f17 auipc t5,0x0
800001b0: 010f0f13 addi t5,t5,16 # 800001bc <test3>
800001b4: 0000a183 lw gp,0(ra)
800001b8: 0d40006f j 8000028c <fail>
8000019c <test3>:
8000019c: 00300e13 li t3,3
800001a0: 00000f17 auipc t5,0x0
800001a4: 0ccf0f13 addi t5,t5,204 # 8000026c <fail>
800001a8: 00000117 auipc sp,0x0
800001ac: 01010113 addi sp,sp,16 # 800001b8 <test4>
800001b0: 34111073 csrw mepc,sp
800001b4: 30200073 mret
800001bc <test3>:
800001bc: 00300e13 li t3,3
800001c0: 00000f17 auipc t5,0x0
800001c4: 0ccf0f13 addi t5,t5,204 # 8000028c <fail>
800001c8: 00000117 auipc sp,0x0
800001cc: 01010113 addi sp,sp,16 # 800001d8 <test4>
800001d0: 34111073 csrw mepc,sp
800001d4: 30200073 mret
800001b8 <test4>:
800001b8: 00400e13 li t3,4
800001bc: 00000f17 auipc t5,0x0
800001c0: 0b0f0f13 addi t5,t5,176 # 8000026c <fail>
800001c4: deadc137 lui sp,0xdeadc
800001c8: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc77>
800001cc: 800080b7 lui ra,0x80008
800001d0: 0020a023 sw sp,0(ra) # 80008000 <pass+0x7d88>
800001d4: 00000f17 auipc t5,0x0
800001d8: 010f0f13 addi t5,t5,16 # 800001e4 <test5>
800001dc: 0000a183 lw gp,0(ra)
800001e0: 08c0006f j 8000026c <fail>
800001d8 <test4>:
800001d8: 00400e13 li t3,4
800001dc: 00000f17 auipc t5,0x0
800001e0: 0b0f0f13 addi t5,t5,176 # 8000028c <fail>
800001e4: deadc137 lui sp,0xdeadc
800001e8: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc57>
800001ec: 800080b7 lui ra,0x80008
800001f0: 0020a023 sw sp,0(ra) # 80008000 <pass+0x7d68>
800001f4: 00000f17 auipc t5,0x0
800001f8: 010f0f13 addi t5,t5,16 # 80000204 <test5>
800001fc: 0000a183 lw gp,0(ra)
80000200: 08c0006f j 8000028c <fail>
800001e4 <test5>:
800001e4: 00500e13 li t3,5
800001e8: deadc137 lui sp,0xdeadc
800001ec: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc77>
800001f0: 800000b7 lui ra,0x80000
800001f4: 0020a023 sw sp,0(ra) # 80000000 <pass+0xfffffd88>
800001f8: 0000a183 lw gp,0(ra)
800001fc: 06311863 bne sp,gp,8000026c <fail>
80000204 <test5>:
80000204: 00500e13 li t3,5
80000208: deadc137 lui sp,0xdeadc
8000020c: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc57>
80000210: 800000b7 lui ra,0x80000
80000214: 0020a023 sw sp,0(ra) # 80000000 <pass+0xfffffd68>
80000218: 0000a183 lw gp,0(ra)
8000021c: 06311863 bne sp,gp,8000028c <fail>
80000200 <test6>:
80000200: 00600e13 li t3,6
80000204: 800100b7 lui ra,0x80010
80000208: 0000a183 lw gp,0(ra) # 80010000 <pass+0xfd88>
8000020c: 00000f17 auipc t5,0x0
80000210: 06cf0f13 addi t5,t5,108 # 80000278 <pass>
80000214: 0030a023 sw gp,0(ra)
80000218: 0540006f j 8000026c <fail>
80000220 <test6>:
80000220: 00600e13 li t3,6
80000224: 800100b7 lui ra,0x80010
80000228: 0000a183 lw gp,0(ra) # 80010000 <pass+0xfd68>
8000022c: 00000f17 auipc t5,0x0
80000230: 06cf0f13 addi t5,t5,108 # 80000298 <pass>
80000234: 0030a023 sw gp,0(ra)
80000238: 0540006f j 8000028c <fail>
8000021c <test7>:
8000021c: 00700e13 li t3,7
80000220: 00000f17 auipc t5,0x0
80000224: 04cf0f13 addi t5,t5,76 # 8000026c <fail>
80000228: deadc137 lui sp,0xdeadc
8000022c: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc77>
80000230: 800300b7 lui ra,0x80030
80000234: ff808093 addi ra,ra,-8 # 8002fff8 <pass+0x2fd80>
80000238: 00222023 sw sp,0(tp) # 0 <_start-0x80000000>
8000023c: 00000f17 auipc t5,0x0
80000240: fa8f0f13 addi t5,t5,-88 # 800001e4 <test5>
80000244: 00022183 lw gp,0(tp) # 0 <_start-0x80000000>
80000248: 0240006f j 8000026c <fail>
8000024c <test8>:
8000024c: 00800e13 li t3,8
80000250: 800400b7 lui ra,0x80040
80000254: ff808093 addi ra,ra,-8 # 8003fff8 <pass+0x3fd80>
80000258: 0000a183 lw gp,0(ra)
8000023c <test7>:
8000023c: 00700e13 li t3,7
80000240: 00000f17 auipc t5,0x0
80000244: 04cf0f13 addi t5,t5,76 # 8000028c <fail>
80000248: deadc137 lui sp,0xdeadc
8000024c: eef10113 addi sp,sp,-273 # deadbeef <pass+0x5eadbc57>
80000250: 800300b7 lui ra,0x80030
80000254: ff808093 addi ra,ra,-8 # 8002fff8 <pass+0x2fd60>
80000258: 00222023 sw sp,0(tp) # 0 <_start-0x80000000>
8000025c: 00000f17 auipc t5,0x0
80000260: 01cf0f13 addi t5,t5,28 # 80000278 <pass>
80000264: 0030a023 sw gp,0(ra)
80000268: 0040006f j 8000026c <fail>
80000260: fa8f0f13 addi t5,t5,-88 # 80000204 <test5>
80000264: 00022183 lw gp,0(tp) # 0 <_start-0x80000000>
80000268: 0240006f j 8000028c <fail>
8000026c <fail>:
8000026c: f0100137 lui sp,0xf0100
80000270: f2410113 addi sp,sp,-220 # f00fff24 <pass+0x700ffcac>
80000274: 01c12023 sw t3,0(sp)
8000026c <test8>:
8000026c: 00800e13 li t3,8
80000270: 800400b7 lui ra,0x80040
80000274: ff808093 addi ra,ra,-8 # 8003fff8 <pass+0x3fd60>
80000278: 0000a183 lw gp,0(ra)
8000027c: 00000f17 auipc t5,0x0
80000280: 01cf0f13 addi t5,t5,28 # 80000298 <pass>
80000284: 0030a023 sw gp,0(ra)
80000288: 0040006f j 8000028c <fail>
80000278 <pass>:
80000278: f0100137 lui sp,0xf0100
8000027c: f2010113 addi sp,sp,-224 # f00fff20 <pass+0x700ffca8>
80000280: 00012023 sw zero,0(sp)
8000028c <fail>:
8000028c: f0100137 lui sp,0xf0100
80000290: f2410113 addi sp,sp,-220 # f00fff24 <pass+0x700ffc8c>
80000294: 01c12023 sw t3,0(sp)
80000298 <pass>:
80000298: f0100137 lui sp,0xf0100
8000029c: f2010113 addi sp,sp,-224 # f00fff20 <pass+0x700ffc88>
800002a0: 00012023 sw zero,0(sp)

BIN
src/test/cpp/raw/pmp/build/pmp.elf
View File

Binary file not shown.

78
src/test/cpp/raw/pmp/build/pmp.hex
View File

@ -1,44 +1,46 @@
:0200000480007A
:100000009700000093800001739050306F00C00093
:1000100073101F3473002030130E0000170F000000
:10002000130F0F25B70000803782008037C1ADDE87
:10002000130F0F27B70000803782008037C1ADDE85
:100030001301F1EE23A020002320220083A1000061
:10004000631631228321020063123122B7021207A4
:100050007390023AB7021F19938242307390123A9A
:10006000B7020F00938262507390223AB7221E0F9C
:10007000938202907390323AB70200207390023B51
:100080009302F0FF7390123BB72200207390223B43
:10009000B74200209382F2FF7390323BB7420020B8
:1000A0009382F2FF7390423BB74200209382F2FFAB
:1000B0007390523BB72200209382F2FF7390623B11
:1000C000B76200209382F2FF7390723BB7C20020A8
:1000D0007390823BB7D200207390923B9302F0FF63
:1000E0007390A23B930200007390B23B9302000016
:1000F0007390C23B930200007390D23B93020000C6
:100100007390E23B930200007390F23B3701C10011
:100110001301E1FE23A020002320220083A1000080
:10012000631631149301000083210200631031141F
:10013000130E1000170F0000130F8F13B712920742
:10014000938282807390023AB780008037C1ADDE1F
:100150001301F1EE23A02000170F0000130F0F0171
:1001600083A100006F008010130E2000170F000005
:10017000130F0F10B70212077390023AB780008076
:1001800037C1ADDE1301F1EE23A02000170F0000F0
:10019000130F0F0183A100006F00400D130E3000FC
:1001A000170F0000130FCF0C1701000013010101FE
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:1000F0007390A23B930200007390B23B9302000006
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:10024000170F0000130FCF0437C1ADDE1301F1EE1D
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:10026000130F8FFA832102006F004002130E8000EB
:10027000B7000480938080FF83A10000170F000067
:10028000130FCF0123A030006F004000370110F0A2
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:0402A0002320010016
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:00000001FF

12
src/test/cpp/raw/pmp/build/pmp.map
View File

@ -15,19 +15,19 @@ LOAD /opt/riscv/lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-e
END GROUP
LOAD /opt/riscv/lib/gcc/riscv64-unknown-elf/10.2.0/libgcc.a
.crt_section 0x0000000080000000 0x284
.crt_section 0x0000000080000000 0x2a4
0x0000000080000000 . = ALIGN (0x4)
*crt.o(.text)
.text 0x0000000080000000 0x284 build/src/crt.o
.text 0x0000000080000000 0x2a4 build/src/crt.o
0x0000000080000000 _start
0x0000000080000010 trap
OUTPUT(build/pmp.elf elf32-littleriscv)
.data 0x0000000080000284 0x0
.data 0x0000000080000284 0x0 build/src/crt.o
.data 0x00000000800002a4 0x0
.data 0x00000000800002a4 0x0 build/src/crt.o
.bss 0x0000000080000284 0x0
.bss 0x0000000080000284 0x0 build/src/crt.o
.bss 0x00000000800002a4 0x0
.bss 0x00000000800002a4 0x0 build/src/crt.o
.riscv.attributes
0x0000000000000000 0x1e

8
src/test/cpp/raw/pmp/src/crt.S
View File

@ -58,6 +58,8 @@ test0:
li x5, PMPCFG0
csrw pmpcfg0, x5
csrr x6, pmpcfg0
bne x5, x6, fail
li x5, PMPCFG1
csrw pmpcfg1, x5
li x5, PMPCFG2
@ -66,6 +68,8 @@ test0:
csrw pmpcfg3, x5
li x5, PMPADDR0
csrw pmpaddr0, x5
csrr x6, pmpaddr0
bne x5, x6, fail
li x5, PMPADDR1
csrw pmpaddr1, x5
li x5, PMPADDR2
@ -112,6 +116,8 @@ test1:
la TRAP_RA, fail
li x5, PMPCFG0_
csrw pmpcfg0, x5 // lock region 2
csrr x6, pmpcfg0
bne x5, x6, fail
li x1, 0x80008000
li x2, 0xdeadbeef
sw x2, 0x0(x1) // should be OK (write 0x80008000)
@ -125,6 +131,8 @@ test2:
la TRAP_RA, fail
li x5, PMPCFG0
csrw pmpcfg0, x5 // "unlock" region 2
csrr x6, pmpcfg0
beq x5, x6, fail
li x1, 0x80008000
li x2, 0xdeadbeef
sw x2, 0x0(x1) // should still be OK (write 0x80008000)