powerpc: Add vr save/restore functions
GCC 4.8 now generates out-of-line vr save/restore functions when optimizing for size. They are needed for the raid6 altivec support. Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Andreas Schwab
Benjamin Herrenschmidt
Родитель
dece8ada99
Коммит
8fe9c93e74
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@ -231,6 +231,87 @@ _GLOBAL(_rest32gpr_31_x)
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mr 1,11
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blr
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#ifdef CONFIG_ALTIVEC
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/* Called with r0 pointing just beyond the end of the vector save area. */
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_GLOBAL(_savevr_20)
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li r11,-192
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stvx vr20,r11,r0
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_GLOBAL(_savevr_21)
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li r11,-176
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stvx vr21,r11,r0
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_GLOBAL(_savevr_22)
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li r11,-160
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stvx vr22,r11,r0
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_GLOBAL(_savevr_23)
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li r11,-144
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stvx vr23,r11,r0
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_GLOBAL(_savevr_24)
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li r11,-128
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stvx vr24,r11,r0
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_GLOBAL(_savevr_25)
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li r11,-112
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stvx vr25,r11,r0
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_GLOBAL(_savevr_26)
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li r11,-96
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stvx vr26,r11,r0
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_GLOBAL(_savevr_27)
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li r11,-80
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stvx vr27,r11,r0
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_GLOBAL(_savevr_28)
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li r11,-64
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stvx vr28,r11,r0
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_GLOBAL(_savevr_29)
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li r11,-48
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stvx vr29,r11,r0
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_GLOBAL(_savevr_30)
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li r11,-32
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stvx vr30,r11,r0
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_GLOBAL(_savevr_31)
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li r11,-16
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stvx vr31,r11,r0
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blr
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_GLOBAL(_restvr_20)
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li r11,-192
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lvx vr20,r11,r0
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_GLOBAL(_restvr_21)
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li r11,-176
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lvx vr21,r11,r0
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_GLOBAL(_restvr_22)
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li r11,-160
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lvx vr22,r11,r0
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_GLOBAL(_restvr_23)
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li r11,-144
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lvx vr23,r11,r0
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_GLOBAL(_restvr_24)
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li r11,-128
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lvx vr24,r11,r0
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_GLOBAL(_restvr_25)
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li r11,-112
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lvx vr25,r11,r0
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_GLOBAL(_restvr_26)
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li r11,-96
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lvx vr26,r11,r0
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_GLOBAL(_restvr_27)
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li r11,-80
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lvx vr27,r11,r0
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_GLOBAL(_restvr_28)
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li r11,-64
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lvx vr28,r11,r0
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_GLOBAL(_restvr_29)
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li r11,-48
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lvx vr29,r11,r0
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_GLOBAL(_restvr_30)
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li r11,-32
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lvx vr30,r11,r0
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_GLOBAL(_restvr_31)
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li r11,-16
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lvx vr31,r11,r0
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blr
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#endif /* CONFIG_ALTIVEC */
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#else /* CONFIG_PPC64 */
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.section ".text.save.restore","ax",@progbits
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@ -356,6 +437,111 @@ _restgpr0_31:
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mtlr r0
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blr
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#ifdef CONFIG_ALTIVEC
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/* Called with r0 pointing just beyond the end of the vector save area. */
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.globl _savevr_20
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_savevr_20:
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li r12,-192
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stvx vr20,r12,r0
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.globl _savevr_21
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_savevr_21:
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li r12,-176
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stvx vr21,r12,r0
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.globl _savevr_22
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_savevr_22:
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li r12,-160
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stvx vr22,r12,r0
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.globl _savevr_23
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_savevr_23:
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li r12,-144
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stvx vr23,r12,r0
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.globl _savevr_24
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_savevr_24:
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li r12,-128
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stvx vr24,r12,r0
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.globl _savevr_25
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_savevr_25:
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li r12,-112
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stvx vr25,r12,r0
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.globl _savevr_26
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_savevr_26:
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li r12,-96
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stvx vr26,r12,r0
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.globl _savevr_27
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_savevr_27:
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li r12,-80
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stvx vr27,r12,r0
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.globl _savevr_28
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_savevr_28:
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li r12,-64
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stvx vr28,r12,r0
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.globl _savevr_29
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_savevr_29:
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li r12,-48
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stvx vr29,r12,r0
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.globl _savevr_30
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_savevr_30:
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li r12,-32
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stvx vr30,r12,r0
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.globl _savevr_31
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_savevr_31:
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li r12,-16
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stvx vr31,r12,r0
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blr
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.globl _restvr_20
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_restvr_20:
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li r12,-192
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lvx vr20,r12,r0
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.globl _restvr_21
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_restvr_21:
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li r12,-176
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lvx vr21,r12,r0
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.globl _restvr_22
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_restvr_22:
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li r12,-160
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lvx vr22,r12,r0
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.globl _restvr_23
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_restvr_23:
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li r12,-144
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lvx vr23,r12,r0
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.globl _restvr_24
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_restvr_24:
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li r12,-128
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lvx vr24,r12,r0
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.globl _restvr_25
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_restvr_25:
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li r12,-112
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lvx vr25,r12,r0
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.globl _restvr_26
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_restvr_26:
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li r12,-96
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lvx vr26,r12,r0
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.globl _restvr_27
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_restvr_27:
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li r12,-80
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lvx vr27,r12,r0
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.globl _restvr_28
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_restvr_28:
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li r12,-64
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lvx vr28,r12,r0
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.globl _restvr_29
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_restvr_29:
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li r12,-48
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lvx vr29,r12,r0
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.globl _restvr_30
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_restvr_30:
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li r12,-32
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lvx vr30,r12,r0
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.globl _restvr_31
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_restvr_31:
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li r12,-16
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lvx vr31,r12,r0
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blr
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#endif /* CONFIG_ALTIVEC */
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#endif /* CONFIG_PPC64 */
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#endif
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@ -584,12 +584,16 @@ static int ignore_undef_symbol(struct elf_info *info, const char *symname)
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if (strncmp(symname, "_restgpr_", sizeof("_restgpr_") - 1) == 0 ||
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strncmp(symname, "_savegpr_", sizeof("_savegpr_") - 1) == 0 ||
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strncmp(symname, "_rest32gpr_", sizeof("_rest32gpr_") - 1) == 0 ||
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strncmp(symname, "_save32gpr_", sizeof("_save32gpr_") - 1) == 0)
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strncmp(symname, "_save32gpr_", sizeof("_save32gpr_") - 1) == 0 ||
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strncmp(symname, "_restvr_", sizeof("_restvr_") - 1) == 0 ||
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strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0)
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return 1;
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if (info->hdr->e_machine == EM_PPC64)
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/* Special register function linked on all modules during final link of .ko */
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if (strncmp(symname, "_restgpr0_", sizeof("_restgpr0_") - 1) == 0 ||
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strncmp(symname, "_savegpr0_", sizeof("_savegpr0_") - 1) == 0)
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strncmp(symname, "_savegpr0_", sizeof("_savegpr0_") - 1) == 0 ||
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strncmp(symname, "_restvr_", sizeof("_restvr_") - 1) == 0 ||
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strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0)
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return 1;
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/* Do not ignore this symbol */
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return 0;
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