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Restored to original WALLY-init-lib beause new flavor is moved to cvw-arch-verif and the old is needed for PMP code coverage

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This commit is contained in:
David Harris 2024-11-14 10:56:13 -08:00
parent 8e6170cc83
commit 4251f0c6a2
1 changed files with 22 additions and 43 deletions
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23
tests/coverage/WALLY-init-lib.h
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@ -28,12 +28,6 @@
// The PMP tests are sensitive to the exact addresses in this code, so unfortunately // The PMP tests are sensitive to the exact addresses in this code, so unfortunately
// modifying anything breaks those tests. // modifying anything breaks those tests.
// Provides simple firmware services through ecall. Place argument in a0 and issue ecall:
// 0: change to user mode
// 1: change to supervisor mode
// 3: change to machine mode
// 4: terminate program
.section .text.init .section .text.init
.global rvtest_entry_point .global rvtest_entry_point
@ -77,7 +71,7 @@ trap_handler:
interrupt: # must be a timer interrupt interrupt: # must be a timer interrupt
li t0, -1 # set mtimecmp to biggest number so it doesnt interrupt again li t0, -1 # set mtimecmp to biggest number so it doesnt interrupt again
li t1, 0x02004000 # MTIMECMP in CLINT li t1, 0x02004000 # MTIMECMP in CLIN
sd t0, 0(t1) sd t0, 0(t1)
csrw stimecmp, t0 # sets stimecmp to big number so it doesnt interrupt csrw stimecmp, t0 # sets stimecmp to big number so it doesnt interrupt
li t0, 32 li t0, 32
@ -134,18 +128,6 @@ write_tohost:
self_loop: self_loop:
j self_loop # wait j self_loop # wait
// utility routines
# put a 1 in msb of a0 (position XLEN-1); works for both RV32 and RV64
setmsb:
li a0, 0x80000000 # 1 in bit 31
slli a1, a0, 1 # check if register is wider than 31 bits
beqz a1, setmsbdone # yes, a0 has 1 in bit 31
slli a0, a0, 16 # no: shift a0 to have 1 inn bit 63
slli a0, a0, 16 # use two shifts of 16 bits each to be compatible with compiling either RV32 or 64
setmsbdone:
ret # return to calller
.section .tohost .section .tohost
tohost: # write to HTIF tohost: # write to HTIF
.dword 0 .dword 0
@ -157,9 +139,6 @@ begin_signature:
.fill 6*(XLEN/32),4,0xdeadbeef # .fill 6*(XLEN/32),4,0xdeadbeef #
end_signature: end_signature:
scratch:
.fill 4,4,0x0
# Initialize stack with room for 512 bytes # Initialize stack with room for 512 bytes
.bss .bss
.space 512 .space 512