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authorAndreas Jaeger <aj@suse.de>2001-06-29 17:51:27 +0000
committerAndreas Jaeger <aj@suse.de>2001-06-29 17:51:27 +0000
commit33e25d26e7ac71e0cfba55a34475cc0ac3570f61 (patch)
treecc99360bbb234c4dc4a091113ab6607b09494e85 /sysdeps/powerpc
parent2995f70ed7f3292edf0942e76128b7b0d5d1d165 (diff)
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Update.
2001-06-19 Andreas Jaeger <aj@suse.de> * sysdeps/powerpc/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE): Handle profiling.
Diffstat (limited to 'sysdeps/powerpc')
-rw-r--r--sysdeps/powerpc/dl-machine.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/sysdeps/powerpc/dl-machine.h b/sysdeps/powerpc/dl-machine.h
index f3f6a138e2..ace7aab8e9 100644
--- a/sysdeps/powerpc/dl-machine.h
+++ b/sysdeps/powerpc/dl-machine.h
@@ -102,6 +102,7 @@ elf_machine_load_address (void)
/* This code is used in dl-runtime.c to call the `fixup' function
and then redirect to the address it returns. It is called
from code built in the PLT by elf_machine_runtime_setup. */
+#if !defined PROF
#define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\n\
.section \".text\" \n\
.align 2 \n\
@@ -198,6 +199,59 @@ _dl_prof_resolve: \n\
# Undo '.section text'.\n\
.previous \n\
");
+#else
+# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\n\
+ .section \".text\" \n\
+ .align 2 \n\
+ .globl _dl_runtime_resolve \n\
+ .globl _dl_prof_resolve \n\
+ .type _dl_runtime_resolve,@function \n\
+ .type _dl_prof_resolve,@function \n\
+_dl_runtime_resolve: \n\
+_dl_prof_resolve: \n\
+ # We need to save the registers used to pass parameters, and register 0,\n\
+ # which is used by _mcount; the registers are saved in a stack frame.\n\
+ stwu 1,-64(1) \n\
+ stw 0,12(1) \n\
+ stw 3,16(1) \n\
+ stw 4,20(1) \n\
+ # The code that calls this has put parameters for `fixup' in r12 and r11.\n\
+ mr 3,12 \n\
+ stw 5,24(1) \n\
+ mr 4,11 \n\
+ stw 6,28(1) \n\
+ mflr 0 \n\
+ # We also need to save some of the condition register fields.\n\
+ stw 7,32(1) \n\
+ stw 0,48(1) \n\
+ stw 8,36(1) \n\
+ mfcr 0 \n\
+ stw 9,40(1) \n\
+ stw 10,44(1) \n\
+ stw 0,8(1) \n\
+ bl fixup@local \n\
+ # 'fixup' returns the address we want to branch to.\n\
+ mtctr 3 \n\
+ # Put the registers back...\n\
+ lwz 0,48(1) \n\
+ lwz 10,44(1) \n\
+ lwz 9,40(1) \n\
+ mtlr 0 \n\
+ lwz 8,36(1) \n\
+ lwz 0,8(1) \n\
+ lwz 7,32(1) \n\
+ lwz 6,28(1) \n\
+ mtcrf 0xFF,0 \n\
+ lwz 5,24(1) \n\
+ lwz 4,20(1) \n\
+ lwz 3,16(1) \n\
+ lwz 0,12(1) \n\
+ # ...unwind the stack frame, and jump to the PLT entry we updated.\n\
+ addi 1,1,64 \n\
+ bctr \n\
+ .size _dl_runtime_resolve,.-_dl_runtime_resolve \n\
+");
+#endif
/* The actual _start code is in dl-start.S. Use a really
ugly bit of assembler to let dl-start.o see _dl_start. */