diff options
| author | Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> | 2014-07-17 22:09:10 +0300 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2014-07-18 14:10:23 -0400 |
| commit | 200d15479c0bc48471ee7b8e538ce33af990f82e (patch) | |
| tree | 864cc38895b9277384ed3a956f4ad324de2c4455 /src/ldso/or1k/start.s | |
| parent | 7bece9c2095ee81f14b1088f6b0ba2f37fecb283 (diff) | |
| download | musl-200d15479c0bc48471ee7b8e538ce33af990f82e.tar.gz | |
add or1k (OpenRISC 1000) architecture port
With the exception of a fenv implementation, the port is fully featured.
The port has been tested in or1ksim, the golden reference functional
simulator for OpenRISC 1000.
It passes all libc-test tests (except the math tests that
requires a fenv implementation).
The port assumes an or1k implementation that has support for
atomic instructions (l.lwa/l.swa).
Although it passes all the libc-test tests, the port is still
in an experimental state, and has yet experienced very little
'real-world' use.
Diffstat (limited to 'src/ldso/or1k/start.s')
| -rw-r--r-- | src/ldso/or1k/start.s | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/ldso/or1k/start.s b/src/ldso/or1k/start.s new file mode 100644 index 00000000..83b7c2c6 --- /dev/null +++ b/src/ldso/or1k/start.s @@ -0,0 +1,34 @@ +.global _dlstart +_dlstart: + l.jal 1f + l.nop +1: l.movhi r5, gotpchi(_GLOBAL_OFFSET_TABLE_+0) + l.ori r5, r5, gotpclo(_GLOBAL_OFFSET_TABLE_+4) + l.add r5, r5, r9 + l.movhi r3, gotoffhi(_DYNAMIC) + l.ori r3, r3, gotofflo(_DYNAMIC) + l.add r5, r5, r3 + + l.lwz r3, 0(r1) + l.addi r4, r1, 4 + l.jal plt(__reloc_self) + l.addi r1, r1, -16 + + l.lwz r3, 16(r1) + l.jal plt(__dynlink) + l.addi r4, r1, 20 + l.addi r1, r1, 16 + + l.lwz r4, 0(r1) +1: l.addi r4, r4, -1 + l.lwz r5, 4(r1) + l.sfeqi r5, -1 + l.bf 1b + l.addi r1, r1, 4 + + l.addi r4, r4, 1 + l.addi r1, r1, -4 + l.sw 0(r1), r4 + + l.jr r11 + l.ori r3, r0, 0 |