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Added negative offset case for JALR

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Valentin Haudiquet
2023-10-09 14:51:42 +02:00
parent 1c1b6a7ac0
commit a62148255e
1 changed files with 15 additions and 4 deletions
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19
tests/jalr.s
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@@ -12,17 +12,19 @@ _start:
# Try to call two imbricated functions # Try to call two imbricated functions
jal fn0 jal fn0
# Jump to 'just_after'
auipc ra, 0 auipc ra, 0
jalr 12(ra) jalr 16(ra)
# Jump far to test jalr with negative offset
jal fnfar
ebreak ebreak
# just_after : address is 12 bytes after auipc # just_after : address is 16 bytes after auipc
just_after: just_after:
# ra must still be the old address # ra must still be the old address
addi a0, zero, 0
ret ret
addi a0, zero, 1
ebreak ebreak
# fn0 : function that calls fn1 and returns # fn0 : function that calls fn1 and returns
@@ -46,3 +48,12 @@ fn0:
fn1: fn1:
ret ret
ebreak ebreak
fnneg:
addi a0, zero, 0
ebreak
fnfar:
auipc ra, 0
jalr -8(ra)
ebreak