summaryrefslogtreecommitdiff
path: root/src/internal/sh/syscall.s
diff options
context:
space:
mode:
authorRich Felker <dalias@aerifal.cx>2014-02-27 22:03:25 -0500
committerRich Felker <dalias@aerifal.cx>2014-02-27 22:03:25 -0500
commitaacd348637e38795dd7ae3c7c8c908d8c0cd24fd (patch)
tree3055797eea08dafe99dcdbd1e7efabd44bcb723b /src/internal/sh/syscall.s
parentb9f7f2e8762922a1a24d41358164ebe9ae437e31 (diff)
downloadmusl-aacd348637e38795dd7ae3c7c8c908d8c0cd24fd.tar.gz
rename superh port to "sh" for consistency
linux, gcc, etc. all use "sh" as the name for the superh arch. there was already some inconsistency internally in musl: the dynamic linker was searching for "ld-musl-sh.path" as its path file despite its own name being "ld-musl-superh.so.1". there was some sentiment in both directions as to how to resolve the inconsistency, but overall "sh" was favored.
Diffstat (limited to 'src/internal/sh/syscall.s')
-rw-r--r--src/internal/sh/syscall.s22
1 files changed, 22 insertions, 0 deletions
diff --git a/src/internal/sh/syscall.s b/src/internal/sh/syscall.s
new file mode 100644
index 00000000..a8fda1c0
--- /dev/null
+++ b/src/internal/sh/syscall.s
@@ -0,0 +1,22 @@
+.global __syscall
+.type __syscall, @function
+__syscall:
+ ! The kernel syscall entry point documents that the trap number indicates
+ ! the number of arguments being passed, but it then ignores that information.
+ ! Since we do not actually know how many arguments are being passed, we will
+ ! say there are six, since that is the maximum we support here.
+ mov r4, r3
+ mov r5, r4
+ mov r6, r5
+ mov r7, r6
+ mov.l @r15, r7
+ mov.l @(4,r15), r0
+ mov.l @(8,r15), r1
+ trapa #22
+ or r0, r0
+ or r0, r0
+ or r0, r0
+ or r0, r0
+ or r0, r0
+ rts
+ nop