toolchain: fix MIPS softfloat build issue for gcc-5.4.0
Signed-off-by: BangLang Huang <banglang.huang@foxmail.com>
This commit is contained in:
BangLang Huang
Felix Fietkau
parent
5640986001
commit
0fe34d27e2
@ -0,0 +1,174 @@
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From 2b46f9187b6f994fc450628a7cd97fc703dd23e0 Mon Sep 17 00:00:00 2001
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From: BangLang Huang <banglang.huang@foxmail.com>
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Date: Wed, 9 Nov 2016 10:36:49 +0800
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Subject: [PATCH] fix MIPS softfloat build issue
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This patch is backport from github/libffi #272
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Signed-off-by: BangLang Huang <banglang.huang@foxmail.com>
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---
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libffi/src/mips/n32.S | 17 +++++++++++++++++
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libffi/src/mips/o32.S | 17 +++++++++++++++++
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2 files changed, 34 insertions(+)
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diff --git a/libffi/src/mips/n32.S b/libffi/src/mips/n32.S
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index c6985d3..8f25994 100644
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--- a/libffi/src/mips/n32.S
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+++ b/libffi/src/mips/n32.S
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@@ -107,6 +107,16 @@ loadregs:
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REG_L t6, 3*FFI_SIZEOF_ARG($fp) # load the flags word into t6.
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+#ifdef __mips_soft_float
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+ REG_L a0, 0*FFI_SIZEOF_ARG(t9)
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+ REG_L a1, 1*FFI_SIZEOF_ARG(t9)
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+ REG_L a2, 2*FFI_SIZEOF_ARG(t9)
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+ REG_L a3, 3*FFI_SIZEOF_ARG(t9)
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+ REG_L a4, 4*FFI_SIZEOF_ARG(t9)
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+ REG_L a5, 5*FFI_SIZEOF_ARG(t9)
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+ REG_L a6, 6*FFI_SIZEOF_ARG(t9)
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+ REG_L a7, 7*FFI_SIZEOF_ARG(t9)
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+#else
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and t4, t6, ((1<<FFI_FLAG_BITS)-1)
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REG_L a0, 0*FFI_SIZEOF_ARG(t9)
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beqz t4, arg1_next
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@@ -193,6 +203,7 @@ arg7_next:
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arg8_doublep:
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l.d $f19, 7*FFI_SIZEOF_ARG(t9)
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arg8_next:
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+#endif
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callit:
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# Load the function pointer
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@@ -214,6 +225,7 @@ retint:
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b epilogue
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retfloat:
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+#ifndef __mips_soft_float
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bne t6, FFI_TYPE_FLOAT, retdouble
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jal t9
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REG_L t4, 4*FFI_SIZEOF_ARG($fp)
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@@ -272,6 +284,7 @@ retstruct_f_d:
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s.s $f0, 0(t4)
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s.d $f2, 8(t4)
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b epilogue
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+#endif
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retstruct_d_soft:
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bne t6, FFI_TYPE_STRUCT_D_SOFT, retstruct_f_soft
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@@ -429,6 +442,7 @@ ffi_closure_N32:
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REG_S a6, A6_OFF2($sp)
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REG_S a7, A7_OFF2($sp)
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+#ifndef __mips_soft_float
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# Store all possible float/double registers.
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s.d $f12, F12_OFF2($sp)
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s.d $f13, F13_OFF2($sp)
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@@ -438,6 +452,7 @@ ffi_closure_N32:
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s.d $f17, F17_OFF2($sp)
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s.d $f18, F18_OFF2($sp)
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s.d $f19, F19_OFF2($sp)
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+#endif
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# Call ffi_closure_mips_inner_N32 to do the real work.
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LA t9, ffi_closure_mips_inner_N32
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@@ -458,6 +473,7 @@ cls_retint:
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b cls_epilogue
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cls_retfloat:
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+#ifndef __mips_soft_float
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bne v0, FFI_TYPE_FLOAT, cls_retdouble
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l.s $f0, V0_OFF2($sp)
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b cls_epilogue
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@@ -500,6 +516,7 @@ cls_retstruct_f_d:
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l.s $f0, V0_OFF2($sp)
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l.d $f2, V1_OFF2($sp)
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b cls_epilogue
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+#endif
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cls_retstruct_small2:
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REG_L v0, V0_OFF2($sp)
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diff --git a/libffi/src/mips/o32.S b/libffi/src/mips/o32.S
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index eb27981..1aff4b1 100644
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--- a/libffi/src/mips/o32.S
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+++ b/libffi/src/mips/o32.S
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@@ -82,13 +82,16 @@ sixteen:
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ADDU $sp, 4 * FFI_SIZEOF_ARG # adjust $sp to new args
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+#ifndef __mips_soft_float
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bnez t0, pass_d # make it quick for int
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+#endif
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REG_L a0, 0*FFI_SIZEOF_ARG($sp) # just go ahead and load the
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REG_L a1, 1*FFI_SIZEOF_ARG($sp) # four regs.
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REG_L a2, 2*FFI_SIZEOF_ARG($sp)
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REG_L a3, 3*FFI_SIZEOF_ARG($sp)
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b call_it
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+#ifndef __mips_soft_float
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pass_d:
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bne t0, FFI_ARGS_D, pass_f
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l.d $f12, 0*FFI_SIZEOF_ARG($sp) # load $fp regs from args
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@@ -130,6 +133,7 @@ pass_f_d:
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# bne t0, FFI_ARGS_F_D, call_it
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l.s $f12, 0*FFI_SIZEOF_ARG($sp) # load $fp regs from args
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l.d $f14, 2*FFI_SIZEOF_ARG($sp) # passing double and float
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+#endif
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call_it:
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# Load the function pointer
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@@ -158,14 +162,23 @@ retfloat:
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bne t2, FFI_TYPE_FLOAT, retdouble
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jalr t9
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REG_L t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
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+#ifndef __mips_soft_float
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s.s $f0, 0(t0)
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+#else
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+ REG_S v0, 0(t0)
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+#endif
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b epilogue
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retdouble:
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bne t2, FFI_TYPE_DOUBLE, noretval
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jalr t9
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REG_L t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
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+#ifndef __mips_soft_float
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s.d $f0, 0(t0)
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+#else
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+ REG_S v1, 4(t0)
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+ REG_S v0, 0(t0)
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+#endif
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b epilogue
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noretval:
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@@ -261,9 +274,11 @@ $LCFI7:
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li $13, 1 # FFI_O32
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bne $16, $13, 1f # Skip fp save if FFI_O32_SOFT_FLOAT
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+#ifndef __mips_soft_float
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# Store all possible float/double registers.
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s.d $f12, FA_0_0_OFF2($fp)
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s.d $f14, FA_1_0_OFF2($fp)
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+#endif
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1:
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# Call ffi_closure_mips_inner_O32 to do the work.
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la t9, ffi_closure_mips_inner_O32
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@@ -281,6 +296,7 @@ $LCFI7:
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li $13, 1 # FFI_O32
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bne $16, $13, 1f # Skip fp restore if FFI_O32_SOFT_FLOAT
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+#ifndef __mips_soft_float
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li $9, FFI_TYPE_FLOAT
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l.s $f0, V0_OFF2($fp)
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beq $8, $9, closure_done
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@@ -288,6 +304,7 @@ $LCFI7:
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li $9, FFI_TYPE_DOUBLE
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l.d $f0, V0_OFF2($fp)
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beq $8, $9, closure_done
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+#endif
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1:
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REG_L $3, V1_OFF2($fp)
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REG_L $2, V0_OFF2($fp)
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--
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2.7.4
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