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riscv: Reduce reset trampoline code size by 2 bytes

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`addi` with 20 bit immediate does not have a compressed representation,
so using `jalr` with immediate offset uncompressed is smaller than using
`addi`+`c.jr`
This commit is contained in:
Joakim Nohlgård 2022-12-08 13:20:14 +01:00
parent 88d840f796
commit b3d04d8270
1 changed files with 1 additions and 2 deletions
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3
cpu/riscv_common/start.S
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@ -19,8 +19,7 @@ _start:
.option norelax
csrc CSR_MSTATUS, MSTATUS_MIE
lui a0, %hi(_start_real)
addi a0, a0, %lo(_start_real)
jr a0
jalr x0, a0, %lo(_start_real)
_start_real:
la gp, __global_pointer$