From 200d15479c0bc48471ee7b8e538ce33af990f82e Mon Sep 17 00:00:00 2001 From: Stefan Kristiansson Date: Thu, 17 Jul 2014 22:09:10 +0300 Subject: 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. --- src/ldso/or1k/dlsym.s | 5 +++++ src/ldso/or1k/start.s | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+) create mode 100644 src/ldso/or1k/dlsym.s create mode 100644 src/ldso/or1k/start.s (limited to 'src/ldso') diff --git a/src/ldso/or1k/dlsym.s b/src/ldso/or1k/dlsym.s new file mode 100644 index 00000000..b2f4dfe3 --- /dev/null +++ b/src/ldso/or1k/dlsym.s @@ -0,0 +1,5 @@ +.global dlsym +.type dlsym,@function +dlsym: + l.j plt(__dlsym) + l.ori r5, r9, 0 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 -- cgit v1.2.1