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authorRich Felker <dalias@aerifal.cx>2012-09-29 01:05:31 -0400
committerRich Felker <dalias@aerifal.cx>2012-09-29 01:05:31 -0400
commit8c0a3d9e5c169fc9d0f246ab59362b658b029ad7 (patch)
tree6ac54202768db511e8bb959d85060adb98cbf226 /src
parente0ea44cb764fcdbe8515f22096930bede2c7896f (diff)
downloadmusl-8c0a3d9e5c169fc9d0f246ab59362b658b029ad7.tar.gz
microblaze port
based on initial work by rdp, with heavy modifications. some features including threads are untested because qemu app-level emulation seems to be broken and I do not have a proper system image for testing.
Diffstat (limited to 'src')
-rw-r--r--src/internal/microblaze/syscall.s13
-rw-r--r--src/ldso/microblaze/dlsym.s5
-rw-r--r--src/ldso/microblaze/start.s27
-rw-r--r--src/setjmp/microblaze/longjmp.s29
-rw-r--r--src/setjmp/microblaze/setjmp.s29
-rw-r--r--src/signal/microblaze/restore.s11
-rw-r--r--src/signal/microblaze/sigsetjmp.s9
-rw-r--r--src/thread/microblaze/__set_thread_area.s5
-rw-r--r--src/thread/microblaze/__unmapself.s8
-rw-r--r--src/thread/microblaze/clone.s33
-rw-r--r--src/thread/microblaze/syscall_cp.s19
11 files changed, 188 insertions, 0 deletions
diff --git a/src/internal/microblaze/syscall.s b/src/internal/microblaze/syscall.s
new file mode 100644
index 00000000..9bf7c0e0
--- /dev/null
+++ b/src/internal/microblaze/syscall.s
@@ -0,0 +1,13 @@
+.global __syscall
+.type __syscall,@function
+__syscall:
+ addi r12, r5, 0 # Save the system call number
+ add r5, r6, r0 # Shift the arguments, arg1
+ add r6, r7, r0 # arg2
+ add r7, r8, r0 # arg3
+ add r8, r9, r0 # arg4
+ add r9, r10, r0 # arg5
+ lwi r10, r1, 28 # Get arg6.
+ brki r14, 0x8 # syscall
+ rtsd r15, 8
+ nop
diff --git a/src/ldso/microblaze/dlsym.s b/src/ldso/microblaze/dlsym.s
new file mode 100644
index 00000000..2044e2df
--- /dev/null
+++ b/src/ldso/microblaze/dlsym.s
@@ -0,0 +1,5 @@
+.global dlsym
+.type dlsym,@function
+dlsym:
+ brid __dlsym
+ add r7, r15, r0
diff --git a/src/ldso/microblaze/start.s b/src/ldso/microblaze/start.s
new file mode 100644
index 00000000..4afd59f0
--- /dev/null
+++ b/src/ldso/microblaze/start.s
@@ -0,0 +1,27 @@
+# FIXME: clearing argv entries
+.global _start
+_start:
+ add r19, r0, r0
+
+ lw r5, r0, r1
+ addi r6, r1, 4
+ mfs r7, rpc
+ addi r7, r7, _GLOBAL_OFFSET_TABLE_+8
+ addi r7, r7, _DYNAMIC@GOTOFF
+ brlid r15, __reloc_self
+ nop
+
+ lwi r5, r1, 0
+ brlid r15, __dynlink
+ addi r6, r1, 4
+
+ lwi r4, r1, 0
+1: lwi r5, r1, 4
+ addi r5, r5, 1
+ bnei r5, 1f
+ addi r4, r4, -1
+ addi r1, r1, 4
+ bri 1b
+1: swi r4, r1, 0
+ add r5, r0, r0
+ bra r3
diff --git a/src/setjmp/microblaze/longjmp.s b/src/setjmp/microblaze/longjmp.s
new file mode 100644
index 00000000..c0760288
--- /dev/null
+++ b/src/setjmp/microblaze/longjmp.s
@@ -0,0 +1,29 @@
+.global _longjmp
+.global longjmp
+.type _longjmp,@function
+.type longjmp,@function
+_longjmp:
+longjmp:
+ addi r3, r6, 0
+ bnei r3, 1f
+ addi r3, r3, 1
+1: lwi r1, r5, 0
+ lwi r15, r5, 4
+ lwi r2, r5, 8
+ lwi r13, r5, 12
+ lwi r18, r5, 16
+ lwi r19, r5, 20
+ lwi r20, r5, 24
+ lwi r21, r5, 28
+ lwi r22, r5, 32
+ lwi r23, r5, 36
+ lwi r24, r5, 40
+ lwi r25, r5, 44
+ lwi r26, r5, 48
+ lwi r27, r5, 52
+ lwi r28, r5, 56
+ lwi r29, r5, 60
+ lwi r30, r5, 64
+ lwi r31, r5, 68
+ rtsd r15, 8
+ nop
diff --git a/src/setjmp/microblaze/setjmp.s b/src/setjmp/microblaze/setjmp.s
new file mode 100644
index 00000000..f39468a5
--- /dev/null
+++ b/src/setjmp/microblaze/setjmp.s
@@ -0,0 +1,29 @@
+.global __setjmp
+.global _setjmp
+.global setjmp
+.type __setjmp,@function
+.type _setjmp,@function
+.type setjmp,@function
+__setjmp:
+_setjmp:
+setjmp:
+ swi r1, r5, 0
+ swi r15, r5, 4
+ swi r2, r5, 8
+ swi r13, r5, 12
+ swi r18, r5, 16
+ swi r19, r5, 20
+ swi r20, r5, 24
+ swi r21, r5, 28
+ swi r22, r5, 32
+ swi r23, r5, 36
+ swi r24, r5, 30
+ swi r25, r5, 44
+ swi r26, r5, 48
+ swi r27, r5, 52
+ swi r28, r5, 56
+ swi r29, r5, 60
+ swi r30, r5, 64
+ swi r31, r5, 68
+ rtsd r15, 8
+ ori r3, r0, 0
diff --git a/src/signal/microblaze/restore.s b/src/signal/microblaze/restore.s
new file mode 100644
index 00000000..fe4f5a09
--- /dev/null
+++ b/src/signal/microblaze/restore.s
@@ -0,0 +1,11 @@
+.global __restore
+.type __restore,@function
+__restore:
+ ori r12, r0, 119
+ brki r14, 0x8
+
+.global __restore_rt
+.type __restore_rt,@function
+__restore_rt:
+ ori r12, r0, 173
+ brki r14, 0x8
diff --git a/src/signal/microblaze/sigsetjmp.s b/src/signal/microblaze/sigsetjmp.s
new file mode 100644
index 00000000..3aca90dc
--- /dev/null
+++ b/src/signal/microblaze/sigsetjmp.s
@@ -0,0 +1,9 @@
+.global sigsetjmp
+.type sigsetjmp,@function
+sigsetjmp:
+ lwi r11, r5, 72
+ beqi r11, setjmp
+ addi r7, r5, 76
+ add r6, r0, r0
+ brid sigprocmask
+ ori r5, r0, 2
diff --git a/src/thread/microblaze/__set_thread_area.s b/src/thread/microblaze/__set_thread_area.s
new file mode 100644
index 00000000..2b112ae2
--- /dev/null
+++ b/src/thread/microblaze/__set_thread_area.s
@@ -0,0 +1,5 @@
+.global __set_thread_area
+.type __set_thread_area,@function
+__set_thread_area:
+ rtsd r15, 8
+ ori r21, r5, 0
diff --git a/src/thread/microblaze/__unmapself.s b/src/thread/microblaze/__unmapself.s
new file mode 100644
index 00000000..b180de60
--- /dev/null
+++ b/src/thread/microblaze/__unmapself.s
@@ -0,0 +1,8 @@
+.global __unmapself
+.type __unmapself,@function
+__unmapself:
+ ori r12, r0, 91
+ brki r14, 0x8
+ ori r12, r0, 1
+ brki r14, 0x8
+ nop
diff --git a/src/thread/microblaze/clone.s b/src/thread/microblaze/clone.s
new file mode 100644
index 00000000..cff80efa
--- /dev/null
+++ b/src/thread/microblaze/clone.s
@@ -0,0 +1,33 @@
+.global __clone
+.weak clone
+.type __clone,@function
+.type clone,@function
+
+# r5, r6, r7, r8, r9, r10, stack
+# fn, st, fl, ar, pt, tl, ct
+# fl, st, pt, tl, ctx
+
+__clone:
+clone:
+ andi r6, r6, -16
+ addi r6, r6, -16
+ swi r5, r6, 0
+ swi r8, r6, 4
+
+ ori r5, r7, 0
+ ori r7, r9, 0
+ ori r8, r10, 0
+ lwi r9, r1, 28
+ ori r12, r0, 120
+
+ brki r14, 8
+ beqi r3, 1f
+ rtsd r15, 8
+ nop
+
+1: lwi r3, r1, 0
+ lwi r5, r1, 4
+ brald r15, r3
+ nop
+ ori r12, r0, 1
+ brki r14, 8
diff --git a/src/thread/microblaze/syscall_cp.s b/src/thread/microblaze/syscall_cp.s
new file mode 100644
index 00000000..c470521c
--- /dev/null
+++ b/src/thread/microblaze/syscall_cp.s
@@ -0,0 +1,19 @@
+.global __syscall_cp_asm
+.type __syscall_cp_asm,@function
+__syscall_cp_asm:
+.global __cp_begin
+__cp_begin:
+ lwi r5, r5, 0
+ bnei r5, __cancel
+ addi r12, r6, 0
+ add r5, r7, r0
+ add r6, r8, r0
+ add r7, r9, r0
+ add r8, r10, r0
+ lwi r9, r1, 28
+ lwi r10, r1, 32
+ brki r14, 0x8
+.global __cp_end
+__cp_end:
+ rtsd r15, 8
+ nop