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Merge pull request #1096 from davidharrishmc/dev

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XLEN32 support for functional coverage, restore WALLY-init-lib
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Rose Thompson 2024-11-14 15:28:20 -06:00 committed by GitHub
commit 06fb807839
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3 changed files with 27 additions and 42 deletions
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3
config/rv32gc/coverage.svh
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@ -5,6 +5,9 @@
// This file is needed in the config subdirectory for each config supporting coverage. // This file is needed in the config subdirectory for each config supporting coverage.
// It defines which extensions are enabled for that config. // It defines which extensions are enabled for that config.
// Define XLEN, used in covergroups
`define XLEN32 1
// Unprivileged extensions // Unprivileged extensions
`include "RV32I_coverage.svh" `include "RV32I_coverage.svh"
`include "RV32M_coverage.svh" `include "RV32M_coverage.svh"

3
config/rv64gc/coverage.svh
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@ -5,6 +5,9 @@
// This file is needed in the config subdirectory for each config supporting coverage. // This file is needed in the config subdirectory for each config supporting coverage.
// It defines which extensions are enabled for that config. // It defines which extensions are enabled for that config.
// Define XLEN, used in covergroups
`define XLEN64 1
// Unprivileged extensions // Unprivileged extensions
`include "RV64I_coverage.svh" `include "RV64I_coverage.svh"
`include "RV64M_coverage.svh" `include "RV64M_coverage.svh"

21
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
@ -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