author | Wolfgang Rosenauer <wr@rosenauer.org> |
Tue, 18 Mar 2014 22:50:41 +0100 | |
changeset 712 | 427ae22e730e |
parent 710 | 5341dc98d26c |
child 714 | b686e856c800 |
permissions | -rw-r--r-- |
710
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# HG changeset patch |
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# Parent 571f8d1f1501d31bd7c0d0affdc7cdc8b21203a0 |
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# User Ulrich Weigand <uweigand@de.ibm.com> |
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Bug 976648 - powerpc64le-linux support - xptcall port |
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|
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diff --git a/xpcom/reflect/xptcall/src/md/unix/moz.build b/xpcom/reflect/xptcall/src/md/unix/moz.build |
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--- a/xpcom/reflect/xptcall/src/md/unix/moz.build |
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+++ b/xpcom/reflect/xptcall/src/md/unix/moz.build |
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@@ -228,16 +228,23 @@ if CONFIG['OS_TEST'] == 'powerpc64': |
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if CONFIG['OS_ARCH'] in ('Linux', 'FreeBSD'): |
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SOURCES += [ |
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'xptcinvoke_asm_ppc64_linux.s', |
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'xptcinvoke_ppc64_linux.cpp', |
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'xptcstubs_asm_ppc64_linux.s', |
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'xptcstubs_ppc64_linux.cpp', |
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] |
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|
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+if CONFIG['OS_TEST'] == 'powerpc64le': |
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+ if CONFIG['OS_ARCH'] == 'Linux': |
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+ CPP_SOURCES += [ |
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+ 'xptcinvoke_ppc64_linux.cpp', |
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+ 'xptcstubs_ppc64_linux.cpp', |
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+ ] |
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+ |
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if CONFIG['OS_TEST'] in ('macppc', 'bebox', 'ofppc', 'prep', 'amigappc'): |
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if CONFIG['OS_ARCH'] == 'NetBSD': |
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SOURCES += [ |
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'xptcinvoke_asm_ppc_netbsd.s', |
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'xptcinvoke_ppc_netbsd.cpp', |
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'xptcstubs_asm_ppc_netbsd.s', |
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'xptcstubs_ppc_netbsd.cpp', |
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] |
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diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_ppc64_linux.s b/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_ppc64_linux.s |
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--- a/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_ppc64_linux.s |
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+++ b/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_ppc64_linux.s |
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@@ -12,90 +12,121 @@ |
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.set f0,0; .set f1,1; .set f2,2; .set f3,3; .set f4,4 |
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.set f5,5; .set f6,6; .set f7,7; .set f8,8; .set f9,9 |
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.set f10,10; .set f11,11; .set f12,12; .set f13,13; .set f14,14 |
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.set f15,15; .set f16,16; .set f17,17; .set f18,18; .set f19,19 |
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.set f20,20; .set f21,21; .set f22,22; .set f23,23; .set f24,24 |
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.set f25,25; .set f26,26; .set f27,27; .set f28,28; .set f29,29 |
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.set f30,30; .set f31,31 |
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|
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+# The ABI defines a fixed stack frame area of 4 doublewords (ELFv2) |
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+# or 6 doublewords (ELFv1); the last of these doublewords is used |
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+# as TOC pointer save area. The fixed area is followed by a parameter |
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+# save area of 8 doublewords (used for vararg routines), followed |
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+# by space for parameters passed on the stack. |
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+# |
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+# We set STACK_TOC to the offset of the TOC pointer save area, and |
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+# STACK_PARAMS to the offset of the first on-stack parameter. |
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+ |
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+#if _CALL_ELF == 2 |
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+#define STACK_TOC 24 |
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+#define STACK_PARAMS 96 |
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+#else |
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+#define STACK_TOC 40 |
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+#define STACK_PARAMS 112 |
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+#endif |
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|
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# |
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# NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex, |
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# uint32_t paramCount, nsXPTCVariant* params) |
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# |
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|
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+#if _CALL_ELF == 2 |
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+ .section ".text" |
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+ .type NS_InvokeByIndex,@function |
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+ .globl NS_InvokeByIndex |
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+ .align 2 |
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+NS_InvokeByIndex: |
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+0: addis 2,12,(.TOC.-0b)@ha |
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+ addi 2,2,(.TOC.-0b)@l |
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+ .localentry NS_InvokeByIndex,.-NS_InvokeByIndex |
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+#else |
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.section ".toc","aw" |
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.section ".text" |
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.align 2 |
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.globl NS_InvokeByIndex |
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.section ".opd","aw" |
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.align 3 |
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NS_InvokeByIndex: |
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.quad .NS_InvokeByIndex,.TOC.@tocbase |
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.previous |
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.type NS_InvokeByIndex,@function |
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.NS_InvokeByIndex: |
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+#endif |
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mflr 0 |
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std 0,16(r1) |
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|
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std r29,-24(r1) |
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std r30,-16(r1) |
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std r31,-8(r1) |
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|
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mr r29,r3 # Save 'that' in r29 |
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mr r30,r4 # Save 'methodIndex' in r30 |
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mr r31,r1 # Save old frame |
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|
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# Allocate stack frame with space for params. Since at least the |
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# first 7 parameters (not including 'that') will be in registers, |
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# we don't actually need stack space for those. We must ensure |
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# that the stack remains 16-byte aligned. |
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# |
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- # | ..128-byte stack frame.. | | 7 GP | 13 FP | 3 NV | |
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- # | |(params)........| regs | regs | regs | |
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- # (r1)...........(+112)....(+128) |
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- # (-23*8).(-16*8).(-3*8)..(r31) |
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+ # | (fixed area + | | 7 GP | 13 FP | 3 NV | |
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+ # | param. save) |(params)........| regs | regs | regs | |
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+ # (r1)......(+STACK_PARAMS)... (-23*8).(-16*8).(-3*8)..(r31) |
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112 |
|
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# +stack frame, -unused stack params, +regs storage, +1 for alignment |
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- addi r7,r5,((112/8)-7+7+13+3+1) |
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+ addi r7,r5,((STACK_PARAMS/8)-7+7+13+3+1) |
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rldicr r7,r7,3,59 # multiply by 8 and mask with ~15 |
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117 |
neg r7,r7 |
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118 |
stdux r1,r1,r7 |
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119 |
|
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120 |
|
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# Call invoke_copy_to_stack(uint64_t* gpregs, double* fpregs, |
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122 |
# uint32_t paramCount, nsXPTCVariant* s, |
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123 |
# uint64_t* d)) |
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124 |
|
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# r5, r6 are passed through intact (paramCount, params) |
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- # r7 (d) has to be r1+112 -- where parameters are passed on the stack. |
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+ # r7 (d) has to be r1+STACK_PARAMS |
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+ # -- where parameters are passed on the stack. |
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129 |
# r3, r4 are above that, easier to address from r31 than from r1 |
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130 |
|
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131 |
subi r3,r31,(23*8) # r3 --> GPRS |
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subi r4,r31,(16*8) # r4 --> FPRS |
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133 |
- addi r7,r1,112 # r7 --> params |
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134 |
+ addi r7,r1,STACK_PARAMS # r7 --> params |
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135 |
bl invoke_copy_to_stack |
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136 |
nop |
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137 |
|
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138 |
# Set up to invoke function |
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139 |
|
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140 |
ld r9,0(r29) # vtable (r29 is 'that') |
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141 |
mr r3,r29 # self is first arg, obviously |
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142 |
|
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143 |
sldi r30,r30,3 # Find function descriptor |
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144 |
add r9,r9,r30 |
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145 |
- ld r9,0(r9) |
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146 |
+ ld r12,0(r9) |
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147 |
|
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148 |
- ld r0,0(r9) # Actual address from fd. |
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149 |
- std r2,40(r1) # Save r2 (TOC pointer) |
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150 |
+ std r2,STACK_TOC(r1) # Save r2 (TOC pointer) |
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151 |
|
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152 |
+#if _CALL_ELF == 2 |
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153 |
+ mtctr r12 |
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154 |
+#else |
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155 |
+ ld r0,0(r12) # Actual address from fd. |
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156 |
mtctr 0 |
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157 |
- ld r11,16(r9) # Environment pointer from fd. |
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158 |
- ld r2,8(r9) # TOC pointer from fd. |
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159 |
+ ld r11,16(r12) # Environment pointer from fd. |
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160 |
+ ld r2,8(r12) # TOC pointer from fd. |
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161 |
+#endif |
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162 |
|
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163 |
# Load FP and GP registers as required |
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164 |
ld r4, -(23*8)(r31) |
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165 |
ld r5, -(22*8)(r31) |
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166 |
ld r6, -(21*8)(r31) |
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167 |
ld r7, -(20*8)(r31) |
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168 |
ld r8, -(19*8)(r31) |
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169 |
ld r9, -(18*8)(r31) |
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170 |
@@ -112,21 +143,25 @@ NS_InvokeByIndex: |
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171 |
lfd f9, -(8*8)(r31) |
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172 |
lfd f10, -(7*8)(r31) |
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173 |
lfd f11, -(6*8)(r31) |
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174 |
lfd f12, -(5*8)(r31) |
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175 |
lfd f13, -(4*8)(r31) |
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176 |
|
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177 |
bctrl # Do it |
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178 |
|
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179 |
- ld r2,40(r1) # Load our own TOC pointer |
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180 |
+ ld r2,STACK_TOC(r1) # Load our own TOC pointer |
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181 |
ld r1,0(r1) # Revert stack frame |
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182 |
ld 0,16(r1) # Reload lr |
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183 |
ld 29,-24(r1) # Restore NVGPRS |
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184 |
ld 30,-16(r1) |
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185 |
ld 31,-8(r1) |
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186 |
mtlr 0 |
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187 |
blr |
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188 |
|
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189 |
+#if _CALL_ELF == 2 |
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190 |
+ .size NS_InvokeByIndex,.-NS_InvokeByIndex |
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191 |
+#else |
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192 |
.size NS_InvokeByIndex,.-.NS_InvokeByIndex |
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193 |
+#endif |
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194 |
|
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195 |
# Magic indicating no need for an executable stack |
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196 |
.section .note.GNU-stack, "", @progbits ; .previous |
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197 |
diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_ppc64_linux.cpp b/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_ppc64_linux.cpp |
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198 |
--- a/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_ppc64_linux.cpp |
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199 |
+++ b/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_ppc64_linux.cpp |
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200 |
@@ -69,17 +69,19 @@ invoke_copy_to_stack(uint64_t* gpregs, |
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201 |
else |
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202 |
*(double *)d = s->val.d; |
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203 |
} |
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204 |
else if (!s->IsPtrData() && s->type == nsXPTType::T_FLOAT) { |
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205 |
if (i < FPR_COUNT) { |
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206 |
fpregs[i] = s->val.f; // if passed in registers, floats are promoted to doubles |
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207 |
} else { |
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208 |
float *p = (float *)d; |
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209 |
+#ifndef __LITTLE_ENDIAN__ |
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210 |
p++; |
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211 |
+#endif |
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212 |
*p = s->val.f; |
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213 |
} |
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214 |
} |
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215 |
else { |
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216 |
if (i < GPR_COUNT) |
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217 |
gpregs[i] = tempu64; |
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218 |
else |
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219 |
*d = tempu64; |
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220 |
diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_ppc64_linux.s b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_ppc64_linux.s |
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221 |
--- a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_ppc64_linux.s |
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222 |
+++ b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_ppc64_linux.s |
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223 |
@@ -12,28 +12,50 @@ |
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224 |
.set f0,0; .set f1,1; .set f2,2; .set f3,3; .set f4,4 |
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225 |
.set f5,5; .set f6,6; .set f7,7; .set f8,8; .set f9,9 |
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226 |
.set f10,10; .set f11,11; .set f12,12; .set f13,13; .set f14,14 |
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227 |
.set f15,15; .set f16,16; .set f17,17; .set f18,18; .set f19,19 |
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228 |
.set f20,20; .set f21,21; .set f22,22; .set f23,23; .set f24,24 |
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229 |
.set f25,25; .set f26,26; .set f27,27; .set f28,28; .set f29,29 |
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230 |
.set f30,30; .set f31,31 |
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231 |
|
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232 |
+#if _CALL_ELF == 2 |
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233 |
+#define STACK_PARAMS 96 |
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234 |
+#else |
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235 |
+#define STACK_PARAMS 112 |
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236 |
+#endif |
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237 |
+ |
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238 |
+#if _CALL_ELF == 2 |
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239 |
+ .section ".text" |
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240 |
+ .type SharedStub,@function |
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+ .globl SharedStub |
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+ # Make the symbol hidden so that the branch from the stub does |
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+ # not go via a PLT. This is not only better for performance, |
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+ # but may be necessary to avoid linker errors since there is |
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+ # no place to restore the TOC register in a sibling call. |
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246 |
+ .hidden SharedStub |
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247 |
+ .align 2 |
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248 |
+SharedStub: |
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+0: addis 2,12,(.TOC.-0b)@ha |
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250 |
+ addi 2,2,(.TOC.-0b)@l |
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251 |
+ .localentry SharedStub,.-SharedStub |
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252 |
+#else |
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253 |
.section ".text" |
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254 |
.align 2 |
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255 |
.globl SharedStub |
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256 |
.section ".opd","aw" |
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.align 3 |
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258 |
|
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259 |
SharedStub: |
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260 |
.quad .SharedStub,.TOC.@tocbase |
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261 |
.previous |
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262 |
.type SharedStub,@function |
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263 |
|
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264 |
.SharedStub: |
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+#endif |
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266 |
mflr r0 |
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267 |
|
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268 |
std r4, -56(r1) # Save all GPRS |
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269 |
std r5, -48(r1) |
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std r6, -40(r1) |
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271 |
std r7, -32(r1) |
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std r8, -24(r1) |
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273 |
std r9, -16(r1) |
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274 |
@@ -50,17 +72,17 @@ SharedStub: |
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275 |
stfd f5, -128(r1) |
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276 |
stfd f4, -136(r1) |
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277 |
stfd f3, -144(r1) |
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278 |
stfd f2, -152(r1) |
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279 |
stfd f1, -160(r1) |
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280 |
|
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281 |
subi r6,r1,56 # r6 --> gprData |
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282 |
subi r7,r1,160 # r7 --> fprData |
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283 |
- addi r5,r1,112 # r5 --> extra stack args |
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284 |
+ addi r5,r1,STACK_PARAMS # r5 --> extra stack args |
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285 |
|
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286 |
std r0, 16(r1) |
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287 |
|
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288 |
stdu r1,-288(r1) |
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289 |
# r3 has the 'self' pointer |
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290 |
# already |
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291 |
|
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292 |
mr r4,r11 # r4 is methodIndex selector, |
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293 |
@@ -70,12 +92,16 @@ SharedStub: |
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294 |
bl PrepareAndDispatch |
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295 |
nop |
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296 |
|
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297 |
ld 1,0(r1) # restore stack |
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298 |
ld r0,16(r1) # restore LR |
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299 |
mtlr r0 |
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300 |
blr |
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301 |
|
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302 |
+#if _CALL_ELF == 2 |
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303 |
+ .size SharedStub,.-SharedStub |
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304 |
+#else |
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305 |
.size SharedStub,.-.SharedStub |
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306 |
+#endif |
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307 |
|
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308 |
# Magic indicating no need for an executable stack |
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309 |
.section .note.GNU-stack, "", @progbits ; .previous |
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310 |
diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_ppc64_linux.cpp b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_ppc64_linux.cpp |
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311 |
--- a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_ppc64_linux.cpp |
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312 |
+++ b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_ppc64_linux.cpp |
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313 |
@@ -78,17 +78,19 @@ PrepareAndDispatch(nsXPTCStubBase* self, |
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314 |
dp->val.d = fprData[i]; |
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315 |
else |
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316 |
dp->val.d = *(double*) ap; |
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317 |
} else if (!param.IsOut() && type == nsXPTType::T_FLOAT) { |
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318 |
if (i < FPR_COUNT) |
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319 |
dp->val.f = (float) fprData[i]; // in registers floats are passed as doubles |
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320 |
else { |
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321 |
float *p = (float *)ap; |
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322 |
+#ifndef __LITTLE_ENDIAN__ |
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323 |
p++; |
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324 |
+#endif |
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325 |
dp->val.f = *p; |
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326 |
} |
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327 |
} else { /* integer type or pointer */ |
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328 |
if (i < GPR_COUNT) |
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329 |
tempu64 = gprData[i]; |
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330 |
else |
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331 |
tempu64 = *ap; |
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332 |
|
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333 |
@@ -148,16 +150,53 @@ PrepareAndDispatch(nsXPTCStubBase* self, |
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334 |
// Create names would be like: |
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335 |
// _ZN14nsXPTCStubBase5Stub1Ev |
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336 |
// _ZN14nsXPTCStubBase6Stub12Ev |
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337 |
// _ZN14nsXPTCStubBase7Stub123Ev |
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338 |
// _ZN14nsXPTCStubBase8Stub1234Ev |
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339 |
// etc. |
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340 |
// Use assembler directives to get the names right... |
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341 |
|
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342 |
+#if _CALL_ELF == 2 |
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343 |
+# define STUB_ENTRY(n) \ |
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344 |
+__asm__ ( \ |
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345 |
+ ".section \".text\" \n\t" \ |
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346 |
+ ".align 2 \n\t" \ |
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347 |
+ ".if "#n" < 10 \n\t" \ |
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348 |
+ ".globl _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \ |
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349 |
+ ".type _ZN14nsXPTCStubBase5Stub"#n"Ev,@function \n\n" \ |
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350 |
+"_ZN14nsXPTCStubBase5Stub"#n"Ev: \n\t" \ |
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351 |
+ "0: addis 2,12,.TOC.-0b@ha \n\t" \ |
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352 |
+ "addi 2,2,.TOC.-0b@l \n\t" \ |
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353 |
+ ".localentry _ZN14nsXPTCStubBase5Stub"#n"Ev,.-_ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \ |
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354 |
+ \ |
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355 |
+ ".elseif "#n" < 100 \n\t" \ |
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356 |
+ ".globl _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \ |
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357 |
+ ".type _ZN14nsXPTCStubBase6Stub"#n"Ev,@function \n\n" \ |
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+"_ZN14nsXPTCStubBase6Stub"#n"Ev: \n\t" \ |
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+ "0: addis 2,12,.TOC.-0b@ha \n\t" \ |
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+ "addi 2,2,.TOC.-0b@l \n\t" \ |
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+ ".localentry _ZN14nsXPTCStubBase6Stub"#n"Ev,.-_ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \ |
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+ \ |
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+ ".elseif "#n" < 1000 \n\t" \ |
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+ ".globl _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \ |
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+ ".type _ZN14nsXPTCStubBase7Stub"#n"Ev,@function \n\n" \ |
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+"_ZN14nsXPTCStubBase7Stub"#n"Ev: \n\t" \ |
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+ "0: addis 2,12,.TOC.-0b@ha \n\t" \ |
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+ "addi 2,2,.TOC.-0b@l \n\t" \ |
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+ ".localentry _ZN14nsXPTCStubBase7Stub"#n"Ev,.-_ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \ |
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+ \ |
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+ ".else \n\t" \ |
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+ ".err \"stub number "#n" >= 1000 not yet supported\"\n" \ |
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+ ".endif \n\t" \ |
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+ \ |
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+ "li 11,"#n" \n\t" \ |
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+ "b SharedStub \n" \ |
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+); |
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+#else |
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# define STUB_ENTRY(n) \ |
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__asm__ ( \ |
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".section \".toc\",\"aw\" \n\t" \ |
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".section \".text\" \n\t" \ |
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".align 2 \n\t" \ |
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".if "#n" < 10 \n\t" \ |
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".globl _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \ |
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".section \".opd\",\"aw\" \n\t" \ |
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@@ -190,16 +229,17 @@ PrepareAndDispatch(nsXPTCStubBase* self, |
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\ |
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389 |
".else \n\t" \ |
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".err \"stub number "#n" >= 1000 not yet supported\"\n" \ |
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".endif \n\t" \ |
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\ |
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393 |
"li 11,"#n" \n\t" \ |
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394 |
"b SharedStub \n" \ |
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395 |
); |
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396 |
+#endif |
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397 |
|
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398 |
#define SENTINEL_ENTRY(n) \ |
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399 |
nsresult nsXPTCStubBase::Sentinel##n() \ |
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400 |
{ \ |
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401 |
NS_ERROR("nsXPTCStubBase::Sentinel called"); \ |
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402 |
return NS_ERROR_NOT_IMPLEMENTED; \ |
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403 |
} |
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404 |