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-rw-r--r--sysdeps/powerpc/powerpc64/dl-trampoline.S197
1 files changed, 121 insertions, 76 deletions
diff --git a/sysdeps/powerpc/powerpc64/dl-trampoline.S b/sysdeps/powerpc/powerpc64/dl-trampoline.S
index 7bdabe0171..4519af48e2 100644
--- a/sysdeps/powerpc/powerpc64/dl-trampoline.S
+++ b/sysdeps/powerpc/powerpc64/dl-trampoline.S
@@ -1,5 +1,5 @@
/* PLT trampolines. PPC64 version.
- Copyright (C) 2005-2012 Free Software Foundation, Inc.
+ Copyright (C) 2005-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -26,13 +26,13 @@
parm1 (r3) and the index (r0) need to be converted to an offset
(index * 24) in parm2 (r4). */
-#define FRAME_SIZE 176
+#define FRAME_SIZE (FRAME_MIN_SIZE+64)
/* We need to save the registers used to pass parameters, ie. r3 thru
r10; Use local var space rather than the parameter save area,
because gcc as of 2010/05 doesn't allocate a proper stack frame for
a function that makes no calls except for __tls_get_addr and we
might be here resolving the __tls_get_addr call. */
-#define INT_PARMS 112
+#define INT_PARMS FRAME_MIN_SIZE
EALIGN(_dl_runtime_resolve, 4, 0)
stdu r1,-FRAME_SIZE(r1)
cfi_adjust_cfa_offset (FRAME_SIZE)
@@ -48,36 +48,31 @@ EALIGN(_dl_runtime_resolve, 4, 0)
mflr r0
std r8,INT_PARMS+40(r1)
/* Store the LR in the LR Save area. */
- std r0,FRAME_SIZE+16(r1)
- cfi_offset (lr, 16)
- mfcr r0
+ std r0,FRAME_SIZE+FRAME_LR_SAVE(r1)
+ cfi_offset (lr, FRAME_LR_SAVE)
std r9,INT_PARMS+48(r1)
std r10,INT_PARMS+56(r1)
-/* I'm almost certain we don't have to save cr... be safe. */
- std r0,FRAME_SIZE+8(r1)
bl JUMPTARGET(_dl_fixup)
#ifndef SHARED
nop
#endif
/* Put the registers back. */
- ld r0,FRAME_SIZE+16(r1)
+ ld r0,FRAME_SIZE+FRAME_LR_SAVE(r1)
ld r10,INT_PARMS+56(r1)
ld r9,INT_PARMS+48(r1)
ld r8,INT_PARMS+40(r1)
ld r7,INT_PARMS+32(r1)
mtlr r0
- ld r0,FRAME_SIZE+8(r1)
ld r6,INT_PARMS+24(r1)
ld r5,INT_PARMS+16(r1)
ld r4,INT_PARMS+8(r1)
- mtcrf 0xFF,r0
-/* Load the target address, toc and static chain reg from the function
- descriptor returned by fixup. */
- ld r0,0(r3)
- ld r2,8(r3)
- mtctr r0
- ld r11,16(r3)
+/* Prepare for calling the function returned by fixup. */
+ PPC64_LOAD_FUNCPTR r3
ld r3,INT_PARMS+0(r1)
+#if _CALL_ELF == 2
+/* Restore the caller's TOC in case we jump to a local entry point. */
+ ld r2,FRAME_SIZE+FRAME_TOC_SAVE(r1)
+#endif
/* Unwind the stack frame, and jump. */
addi r1,r1,FRAME_SIZE
bctr
@@ -85,17 +80,30 @@ END(_dl_runtime_resolve)
#undef FRAME_SIZE
#undef INT_PARMS
- /* Stack layout:
- +592 previous backchain
- +584 spill_r31
- +576 spill_r30
- +560 v1
- +552 fp4
- +544 fp3
- +536 fp2
- +528 fp1
- +520 r4
- +512 r3
+ /* Stack layout: ELFv2 ABI.
+ +752 previous backchain
+ +744 spill_r31
+ +736 spill_r30
+ +720 v8
+ +704 v7
+ +688 v6
+ +672 v5
+ +656 v4
+ +640 v3
+ +624 v2
+ +608 v1
+ +600 fp10
+ ELFv1 ABI +592 fp9
+ +592 previous backchain +584 fp8
+ +584 spill_r31 +576 fp7
+ +576 spill_r30 +568 fp6
+ +560 v1 +560 fp5
+ +552 fp4 +552 fp4
+ +544 fp3 +544 fp3
+ +536 fp2 +536 fp2
+ +528 fp1 +528 fp1
+ +520 r4 +520 r4
+ +512 r3 +512 r3
return values
+504 free
+496 stackframe
@@ -147,18 +155,24 @@ END(_dl_runtime_resolve)
+64 parm3
+56 parm2
+48 parm1
- * Parameter save area, Allocated by the call, at least 8 double words
- +40 TOC save area
- +32 Reserved for linker
- +24 Reserved for compiler
+ * Parameter save area
+ * (v1 ABI: Allocated by the call, at least 8 double words)
+ +40 v1 ABI: TOC save area
+ +32 v1 ABI: Reserved for linker
+ +24 v1 ABI: Reserved for compiler / v2 ABI: TOC save area
+16 LR save area
+8 CR save area
r1+0 stack back chain
*/
-#define FRAME_SIZE 592
+#if _CALL_ELF == 2
+# define FRAME_SIZE 752
+# define VR_RTN 608
+#else
+# define FRAME_SIZE 592
+# define VR_RTN 560
+#endif
#define INT_RTN 512
#define FPR_RTN 528
-#define VR_RTN 560
#define STACK_FRAME 496
#define CALLING_LR 488
#define CALLING_SP 480
@@ -203,18 +217,14 @@ EALIGN(_dl_profile_resolve, 4, 0)
mflr r5
std r7,INT_PARMS+32(r1)
std r8,INT_PARMS+40(r1)
-/* Store the LR in the LR Save area of the previous frame. */
-/* XXX Do we have to do this? */
+/* Store the LR in the LR Save area. */
la r8,FRAME_SIZE(r1)
- std r5,FRAME_SIZE+16(r1)
- cfi_offset (lr, 16)
+ std r5,FRAME_SIZE+FRAME_LR_SAVE(r1)
+ cfi_offset (lr, FRAME_LR_SAVE)
std r5,CALLING_LR(r1)
- mfcr r0
std r9,INT_PARMS+48(r1)
std r10,INT_PARMS+56(r1)
std r8,CALLING_SP(r1)
-/* I'm almost certain we don't have to save cr... be safe. */
- std r0,FRAME_SIZE+8(r1)
ld r12,.LC__dl_hwcap@toc(r2)
#ifdef SHARED
/* Load _rtld_local_ro._dl_hwcap. */
@@ -311,24 +321,22 @@ L(saveFP):
lvx v12,r11,r10
lvx v13,r11,r9
L(restoreFXR):
- ld r0,FRAME_SIZE+16(r1)
+ ld r0,FRAME_SIZE+FRAME_LR_SAVE(r1)
ld r10,INT_PARMS+56(r1)
ld r9,INT_PARMS+48(r1)
ld r8,INT_PARMS+40(r1)
ld r7,INT_PARMS+32(r1)
mtlr r0
- ld r0,FRAME_SIZE+8(r1)
ld r6,INT_PARMS+24(r1)
ld r5,INT_PARMS+16(r1)
ld r4,INT_PARMS+8(r1)
- mtcrf 0xFF,r0
-/* Load the target address, toc and static chain reg from the function
- descriptor returned by fixup. */
- ld r0,0(r3)
- ld r2,8(r3)
- ld r11,16(r3)
+/* Prepare for calling the function returned by fixup. */
+ PPC64_LOAD_FUNCPTR r3
ld r3,INT_PARMS+0(r1)
- mtctr r0
+#if _CALL_ELF == 2
+/* Restore the caller's TOC in case we jump to a local entry point. */
+ ld r2,FRAME_SIZE+FRAME_TOC_SAVE(r1)
+#endif
/* Load the floating point registers. */
lfd fp1,FPR_PARMS+0(r1)
lfd fp2,FPR_PARMS+8(r1)
@@ -344,10 +352,11 @@ L(restoreFXR):
lfd fp12,FPR_PARMS+88(r1)
lfd fp13,FPR_PARMS+96(r1)
/* Unwind the stack frame, and jump. */
- ld r31,584(r1)
- ld r30,576(r1)
+ ld r31,FRAME_SIZE-8(r1)
+ ld r30,FRAME_SIZE-16(r1)
addi r1,r1,FRAME_SIZE
bctr
+
L(do_pltexit):
la r10,(VR_PARMS+0)(r1)
la r9,(VR_PARMS+16)(r1)
@@ -375,25 +384,19 @@ L(do_pltexit):
lvx v12,r11,r10
lvx v13,r11,r9
L(restoreFXR2):
- ld r0,FRAME_SIZE+16(r1)
+ ld r0,FRAME_SIZE+FRAME_LR_SAVE(r1)
ld r10,INT_PARMS+56(r1)
ld r9,INT_PARMS+48(r1)
ld r8,INT_PARMS+40(r1)
ld r7,INT_PARMS+32(r1)
mtlr r0
- ld r0,FRAME_SIZE+8(r1)
ld r6,INT_PARMS+24(r1)
ld r5,INT_PARMS+16(r1)
ld r4,INT_PARMS+8(r1)
- mtcrf 0xFF,r0
-/* Load the target address, toc and static chain reg from the function
- descriptor returned by fixup. */
- ld r0,0(r3)
- std r2,40(r1)
- ld r2,8(r3)
- ld r11,16(r3)
+/* Prepare for calling the function returned by fixup. */
+ std r2,FRAME_TOC_SAVE(r1)
+ PPC64_LOAD_FUNCPTR r3
ld r3,INT_PARMS+0(r1)
- mtctr r0
/* Load the floating point registers. */
lfd fp1,FPR_PARMS+0(r1)
lfd fp2,FPR_PARMS+8(r1)
@@ -410,21 +413,42 @@ L(restoreFXR2):
lfd fp13,FPR_PARMS+96(r1)
/* Call the target function. */
bctrl
- ld r2,40(r1)
+ ld r2,FRAME_TOC_SAVE(r1)
lwz r12,VR_VRSAVE(r1)
/* But return here and store the return values. */
std r3,INT_RTN(r1)
std r4,INT_RTN+8(r1)
- stfd fp1,FPR_PARMS+0(r1)
- stfd fp2,FPR_PARMS+8(r1)
+ stfd fp1,FPR_RTN+0(r1)
+ stfd fp2,FPR_RTN+8(r1)
cmpdi cr0,r12,0
la r10,VR_RTN(r1)
- stfd fp3,FPR_PARMS+16(r1)
- stfd fp4,FPR_PARMS+24(r1)
+ stfd fp3,FPR_RTN+16(r1)
+ stfd fp4,FPR_RTN+24(r1)
+#if _CALL_ELF == 2
+ la r12,VR_RTN+16(r1)
+ stfd fp5,FPR_RTN+32(r1)
+ stfd fp6,FPR_RTN+40(r1)
+ li r5,32
+ li r6,64
+ stfd fp7,FPR_RTN+48(r1)
+ stfd fp8,FPR_RTN+56(r1)
+ stfd fp9,FPR_RTN+64(r1)
+ stfd fp10,FPR_RTN+72(r1)
+#endif
mr r3,r31
mr r4,r30
beq L(callpltexit)
stvx v2,0,r10
+#if _CALL_ELF == 2
+ stvx v3,0,r12
+ stvx v4,r5,r10
+ stvx v5,r5,r12
+ addi r5,r5,64
+ stvx v6,r6,r10
+ stvx v7,r6,r12
+ stvx v8,r5,r10
+ stvx v9,r5,r12
+#endif
L(callpltexit):
addi r5,r1,INT_PARMS
addi r6,r1,INT_RTN
@@ -436,18 +460,39 @@ L(callpltexit):
lwz r12,VR_VRSAVE(r1)
ld r3,INT_RTN(r1)
ld r4,INT_RTN+8(r1)
- lfd fp1,FPR_PARMS+0(r1)
- lfd fp2,FPR_PARMS+8(r1)
+ lfd fp1,FPR_RTN+0(r1)
+ lfd fp2,FPR_RTN+8(r1)
cmpdi cr0,r12,0
- la r10,VR_RTN(r1)
- lfd fp3,FPR_PARMS+16(r1)
- lfd fp4,FPR_PARMS+24(r1)
+ la r11,VR_RTN(r1)
+ lfd fp3,FPR_RTN+16(r1)
+ lfd fp4,FPR_RTN+24(r1)
+#if _CALL_ELF == 2
+ la r12,VR_RTN+16(r1)
+ lfd fp5,FPR_RTN+32(r1)
+ lfd fp6,FPR_RTN+40(r1)
+ li r30,32
+ li r31,64
+ lfd fp7,FPR_RTN+48(r1)
+ lfd fp8,FPR_RTN+56(r1)
+ lfd fp9,FPR_RTN+64(r1)
+ lfd fp10,FPR_RTN+72(r1)
+#endif
beq L(pltexitreturn)
- lvx v2,0,r10
+ lvx v2,0,r11
+#if _CALL_ELF == 2
+ lvx v3,0,r12
+ lvx v4,r30,r11
+ lvx v5,r30,r12
+ addi r30,r30,64
+ lvx v6,r31,r11
+ lvx v7,r31,r12
+ lvx v8,r30,r11
+ lvx v9,r30,r12
+#endif
L(pltexitreturn):
- ld r0,FRAME_SIZE+16(r1)
- ld r31,584(r1)
- ld r30,576(r1)
+ ld r0,FRAME_SIZE+FRAME_LR_SAVE(r1)
+ ld r31,FRAME_SIZE-8(r1)
+ ld r30,FRAME_SIZE-16(r1)
mtlr r0
ld r1,0(r1)
blr
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-31 03:00:32 +0000