From 5972c4a4113e2a4de5edf519faf15296ae1eb3ed Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Mon, 18 Apr 2016 05:19:13 +0000
Subject: add mips n32 port (ILP32 ABI for mips64)

based on patch submitted by Jaydeep Patil, with minor changes.
---
 src/signal/mipsn32/restore.s   |  9 +++++++++
 src/signal/mipsn32/sigsetjmp.s | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 src/signal/mipsn32/restore.s
 create mode 100644 src/signal/mipsn32/sigsetjmp.s

(limited to 'src/signal')

diff --git a/src/signal/mipsn32/restore.s b/src/signal/mipsn32/restore.s
new file mode 100644
index 00000000..0d1c1c5e
--- /dev/null
+++ b/src/signal/mipsn32/restore.s
@@ -0,0 +1,9 @@
+.set	noreorder
+.global	__restore_rt
+.global	__restore
+.type	__restore_rt,@function
+.type	__restore,@function
+__restore_rt:
+__restore:
+	li	$2,6211
+	syscall
diff --git a/src/signal/mipsn32/sigsetjmp.s b/src/signal/mipsn32/sigsetjmp.s
new file mode 100644
index 00000000..c0c6961f
--- /dev/null
+++ b/src/signal/mipsn32/sigsetjmp.s
@@ -0,0 +1,38 @@
+.set	noreorder
+.global	sigsetjmp
+.global	__sigsetjmp
+.type	sigsetjmp,@function
+.type	__sigsetjmp,@function
+sigsetjmp:
+__sigsetjmp:
+	lui	$3, %hi(%neg(%gp_rel(sigsetjmp)))
+	addiu	$3, $3, %lo(%neg(%gp_rel(sigsetjmp)))
+
+	# comparing save mask with 0, if equals to 0 then
+	# sigsetjmp is equal to setjmp.
+	beq	$5, $0, 1f
+	addu	$3, $3, $25
+	sd	$ra, 160($4)
+	sd	$16, 168($4)
+
+	# save base of got so that we can use it later
+	# once we return from 'longjmp'
+	sd	$3, 176($4)
+	lw	$25, %got_disp(setjmp)($3)
+	jalr	$25
+	move	$16, $4
+
+	move	$5, $2		# Return from 'setjmp' or 'longjmp'
+	move	$4, $16		# Restore the pointer-to-sigjmp_buf
+	ld	$ra, 160($4)	# Restore ra of sigsetjmp
+	ld	$16, 168($4)	# Restore $16 of sigsetjmp
+	ld	$3, 176($4)	# Restore base of got
+
+.hidden	__sigsetjmp_tail
+	lw	$25, %got_disp(__sigsetjmp_tail)($3)
+	jr	$25
+	nop
+1:
+	lw	$25, %got_disp(setjmp)($3)
+	jr	$25
+	nop
-- 
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