summaryrefslogtreecommitdiff
path: root/arch/sh/crt_arch.h
diff options
context:
space:
mode:
authorVladimir Azarov <avm@intermediate-node.net>2024-10-01 15:47:05 +0200
committerVladimir Azarov <avm@intermediate-node.net>2024-10-01 15:47:05 +0200
commit4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch)
treeebf009bf1376a5a223a915bc27cbbd791a1316bc /arch/sh/crt_arch.h
Initial version
Diffstat (limited to 'arch/sh/crt_arch.h')
-rw-r--r--arch/sh/crt_arch.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/arch/sh/crt_arch.h b/arch/sh/crt_arch.h
new file mode 100644
index 0000000..f341c8f
--- /dev/null
+++ b/arch/sh/crt_arch.h
@@ -0,0 +1,78 @@
+#ifdef __SH_FDPIC__
+
+__asm__(
+".text \n"
+".global " START " \n"
+START ": \n"
+" tst r8, r8 \n"
+" bf 1f \n"
+" mov #68, r3 \n"
+" add r3, r3 \n"
+" mov #8, r4 \n"
+" swap.w r4, r4 \n"
+" trapa #31 \n"
+" nop \n"
+" nop \n"
+" nop \n"
+" nop \n"
+"1: nop \n"
+#ifndef SHARED
+" mov r8, r4 \n"
+" mova 1f, r0 \n"
+" mov.l 1f, r5 \n"
+" mov.l 1f+4, r6 \n"
+" add r0, r5 \n"
+" mov.l 4f, r1 \n"
+"5: bsrf r1 \n"
+" add r0, r6 \n"
+" mov r0, r12 \n"
+#endif
+" mov r10, r5 \n"
+" mov r15, r4 \n"
+" mov.l r9, @-r15 \n"
+" mov.l r8, @-r15 \n"
+" mov #-16, r0 \n"
+" mov.l 2f, r1 \n"
+"3: bsrf r1 \n"
+" and r0, r15 \n"
+".align 2 \n"
+"1: .long __ROFIXUP_LIST__@PCREL \n"
+" .long __ROFIXUP_END__@PCREL + 4 \n"
+"2: .long " START "_c@PCREL - (3b+4-.) \n"
+#ifndef SHARED
+"4: .long __fdpic_fixup@PCREL - (5b+4-.) \n"
+#endif
+);
+
+#ifndef SHARED
+#include "fdpic_crt.h"
+#endif
+
+#else
+
+__asm__(
+".text \n"
+".global " START " \n"
+START ": \n"
+" mova 1f, r0 \n"
+" mov.l 1f, r5 \n"
+" add r0, r5 \n"
+" mov r15, r4 \n"
+" mov #-16, r0 \n"
+" mov.l 2f, r1 \n"
+"3: bsrf r1 \n"
+" and r0, r15 \n"
+".align 2 \n"
+".weak _DYNAMIC \n"
+".hidden _DYNAMIC \n"
+"1: .long _DYNAMIC-. \n"
+"2: .long " START "_c@PCREL - (3b+4-.) \n"
+);
+
+#endif
+
+/* used by gcc for switching the FPU between single and double precision */
+#ifdef SHARED
+__attribute__((__visibility__("hidden")))
+#endif
+const unsigned long __fpscr_values[2] = { 0, 0x80000 };