summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
authorSzabolcs Nagy <nsz@port70.net>2014-02-24 23:16:29 +0100
committerSzabolcs Nagy <nsz@port70.net>2014-02-24 23:16:29 +0100
commite5bb165bed7be4176914672d25ff8e286b6fba49 (patch)
treed2f682e9425d1277a9e92cc694b2590a0c22eb0c /src
parentdbed392410e333fde86c14ea17a46d1ad9c760f1 (diff)
downloadmusl-e5bb165bed7be4176914672d25ff8e286b6fba49.tar.gz
mips: add mips-sf subarch support (soft-float)
Userspace emulated floating-point (gcc -msoft-float) is not compatible with the default mips abi (assumes an FPU or in kernel emulation of it). Soft vs hard float abi should not be mixed, __mips_soft_float is checked in musl's configure script and there is no runtime check. The -sf subarch does not save/restore floating-point registers in setjmp/longjmp and only provides dummy fenv implementation.
Diffstat (limited to 'src')
-rw-r--r--src/fenv/mips-sf/fenv.sub1
-rw-r--r--src/setjmp/mips-sf/longjmp.s25
-rw-r--r--src/setjmp/mips-sf/longjmp.sub1
-rw-r--r--src/setjmp/mips-sf/setjmp.s25
-rw-r--r--src/setjmp/mips-sf/setjmp.sub1
5 files changed, 53 insertions, 0 deletions
diff --git a/src/fenv/mips-sf/fenv.sub b/src/fenv/mips-sf/fenv.sub
new file mode 100644
index 00000000..9cafca5e
--- /dev/null
+++ b/src/fenv/mips-sf/fenv.sub
@@ -0,0 +1 @@
+../fenv.c
diff --git a/src/setjmp/mips-sf/longjmp.s b/src/setjmp/mips-sf/longjmp.s
new file mode 100644
index 00000000..8e769675
--- /dev/null
+++ b/src/setjmp/mips-sf/longjmp.s
@@ -0,0 +1,25 @@
+.set noreorder
+
+.global _longjmp
+.global longjmp
+.type _longjmp,@function
+.type longjmp,@function
+_longjmp:
+longjmp:
+ move $2, $5
+ bne $2, $0, 1f
+ nop
+ addu $2, $2, 1
+1: lw $ra, 0($4)
+ lw $sp, 4($4)
+ lw $16, 8($4)
+ lw $17, 12($4)
+ lw $18, 16($4)
+ lw $19, 20($4)
+ lw $20, 24($4)
+ lw $21, 28($4)
+ lw $22, 32($4)
+ lw $23, 36($4)
+ lw $30, 40($4)
+ jr $ra
+ lw $28, 44($4)
diff --git a/src/setjmp/mips-sf/longjmp.sub b/src/setjmp/mips-sf/longjmp.sub
new file mode 100644
index 00000000..e80331b6
--- /dev/null
+++ b/src/setjmp/mips-sf/longjmp.sub
@@ -0,0 +1 @@
+longjmp.s
diff --git a/src/setjmp/mips-sf/setjmp.s b/src/setjmp/mips-sf/setjmp.s
new file mode 100644
index 00000000..38ed5e00
--- /dev/null
+++ b/src/setjmp/mips-sf/setjmp.s
@@ -0,0 +1,25 @@
+.set noreorder
+
+.global __setjmp
+.global _setjmp
+.global setjmp
+.type __setjmp,@function
+.type _setjmp,@function
+.type setjmp,@function
+__setjmp:
+_setjmp:
+setjmp:
+ sw $ra, 0($4)
+ sw $sp, 4($4)
+ sw $16, 8($4)
+ sw $17, 12($4)
+ sw $18, 16($4)
+ sw $19, 20($4)
+ sw $20, 24($4)
+ sw $21, 28($4)
+ sw $22, 32($4)
+ sw $23, 36($4)
+ sw $30, 40($4)
+ sw $28, 44($4)
+ jr $ra
+ li $2, 0
diff --git a/src/setjmp/mips-sf/setjmp.sub b/src/setjmp/mips-sf/setjmp.sub
new file mode 100644
index 00000000..b7ad2210
--- /dev/null
+++ b/src/setjmp/mips-sf/setjmp.sub
@@ -0,0 +1 @@
+setjmp.s