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runtime instrinsics refactoring using RISC-V custom instruction assmebly directives

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Blaise Tine
2021-02-04 15:15:20 -05:00
parent a9f82bceae
commit b047f589d6
44 changed files with 90586 additions and 90486 deletions
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12
runtime/src/vx_start.S
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@@ -8,12 +8,12 @@ _start:
# execute stack initialization on all warps
la a1, vx_set_sp
csrr a0, CSR_NW # get num warps
.word 0x00b5106b # wspawn a0, a1
.insn s 0x6b, 1, a1, 0(a0) # wspawn a0, a1
jal vx_set_sp
# return back to single thread execution
li a0, 1
.word 0x0005006b # tmc a0
.insn s 0x6b, 0, x0, 0(a0) # tmc a0
# Clear the bss segment
la a0, _edata
@@ -44,15 +44,15 @@ _start:
_exit:
# disable all threads in current warp
li a0, 0
.word 0x0005006b # tmc a0
.insn s 0x6b, 0, x0, 0(a0) # tmc a0
.section .text
.type vx_set_sp, @function
.global vx_set_sp
vx_set_sp:
# activate all threads
csrr a0, CSR_NT # get num threads
.word 0x0005006b # set thread mask
csrr a0, CSR_NT # get num threads
.insn s 0x6b, 0, x0, 0(a0) # tmc a0
# set global pointer register
.option push
@@ -76,7 +76,7 @@ vx_set_sp:
csrr a3, CSR_LWID # get local wid
beqz a3, RETURN
li a0, 0
.word 0x0005006b # tmc a0
.insn s 0x6b, 0, x0, 0(a0) # tmc a0
RETURN:
ret