Darwin/iOS: More unified syntax support w/ Clang.
Signed-off-by: Zachary Waldowski <zwaldowski@gmail.com>
This commit is contained in:
Zachary Waldowski
@@ -1,8 +1,8 @@
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/* -----------------------------------------------------------------------
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sysv.S - Copyright (c) 1998, 2008, 2011 Red Hat, Inc.
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Copyright (c) 2011 Plausible Labs Cooperative, Inc.
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ARM Foreign Function Interface
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ARM Foreign Function Interface
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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@@ -25,7 +25,7 @@
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DEALINGS IN THE SOFTWARE.
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----------------------------------------------------------------------- */
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#define LIBFFI_ASM
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#define LIBFFI_ASM
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#include <fficonfig.h>
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#include <ffi.h>
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#ifdef HAVE_MACHINE_ASM_H
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@@ -59,7 +59,7 @@
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#define __SOFTFP__
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#endif
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/* We need a better way of testing for this, but for now, this is all
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/* We need a better way of testing for this, but for now, this is all
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we can do. */
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@ This selects the minimum architecture level required.
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#define __ARM_ARCH__ 3
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@@ -68,7 +68,7 @@
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# undef __ARM_ARCH__
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# define __ARM_ARCH__ 4
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#endif
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#if defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
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|| defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
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|| defined(__ARM_ARCH_5TEJ__)
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@@ -107,44 +107,29 @@
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#define UNWIND
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#else
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#define UNWIND @
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#endif
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#endif
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.syntax unified
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#if defined(__thumb__) && !defined(__THUMB_INTERWORK__)
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.macro ARM_FUNC_START name
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.text
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.align 0
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.thumb
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.thumb_func
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#ifdef __APPLE__
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ENTRY($0)
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#define ARM_FUNC_START(name) \
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.text; \
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.align 2; \
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.thumb; \
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.thumb_func; \
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ENTRY(name); \
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bx pc; \
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nop; \
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.arm; \
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UNWIND .fnstart; \
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_L__##name:
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#else
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ENTRY(\name)
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#endif
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bx pc
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nop
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.arm
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#define ARM_FUNC_START(name) \
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.text; \
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.align 2; \
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.arm; \
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ENTRY(name); \
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UNWIND .fnstart
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/* A hook to tell gdb that we've switched to ARM mode. Also used to call
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directly from other local arm routines. */
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#ifdef __APPLE__
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_L__$0:
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#else
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_L__\name:
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#endif
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.endm
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#else
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.macro ARM_FUNC_START name
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.text
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.align 0
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.arm
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#ifdef __APPLE__
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ENTRY($0)
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#else
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ENTRY(\name)
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#endif
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UNWIND .fnstart
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.endm
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#endif
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.macro RETLDM
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@@ -163,7 +148,7 @@ _L__\name:
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@ sp+0: ecif.rvalue
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@ This assumes we are using gas.
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ARM_FUNC_START ffi_call_SYSV
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ARM_FUNC_START(ffi_call_SYSV)
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@ Save registers
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stmfd sp!, {r0-r3, fp, lr}
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UNWIND .save {r0-r3, fp, lr}
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@@ -193,14 +178,14 @@ ARM_FUNC_START ffi_call_SYSV
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@ call (fn) (...)
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call_reg(ip)
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@ Remove the space we pushed for the args
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mov sp, fp
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@ Load r2 with the pointer to storage for the return value
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ldr r2, [sp, #24]
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@ Load r3 with the return type code
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@ Load r3 with the return type code
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ldr r3, [sp, #12]
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@ If the return value pointer is NULL, assume no return value.
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@@ -220,7 +205,7 @@ ARM_FUNC_START ffi_call_SYSV
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#if defined(__SOFTFP__) || defined(__ARM_EABI__)
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cmpne r3, #FFI_TYPE_DOUBLE
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#endif
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stmeqia r2, {r0, r1}
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stmiaeq r2, {r0, r1}
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#if !defined(__SOFTFP__) && !defined(__ARM_EABI__)
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beq LSYM(Lepilogue)
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@@ -258,7 +243,7 @@ LSYM(Lepilogue):
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void *args;
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*/
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ARM_FUNC_START ffi_closure_SYSV
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ARM_FUNC_START(ffi_closure_SYSV)
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UNWIND .pad #16
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add ip, sp, #16
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stmfd sp!, {ip, lr}
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@@ -337,7 +322,7 @@ ARM_FUNC_START ffi_closure_SYSV
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@ r3: fig->flags
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@ sp+0: ecif.rvalue
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ARM_FUNC_START ffi_call_VFP
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ARM_FUNC_START(ffi_call_VFP)
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@ Save registers
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stmfd sp!, {r0-r3, fp, lr}
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UNWIND .save {r0-r3, fp, lr}
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@@ -389,7 +374,7 @@ LSYM(Lbase_args):
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@ the return value
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ldr r2, [sp, #24]
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@ Load r3 with the return type code
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@ Load r3 with the return type code
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ldr r3, [sp, #12]
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@ If the return value pointer is NULL,
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@@ -408,7 +393,7 @@ LSYM(Lbase_args):
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cmp r3, #FFI_TYPE_FLOAT
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fstseq s0, [r2]
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beq LSYM(Lepilogue_vfp)
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cmp r3, #FFI_TYPE_DOUBLE
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fstdeq d0, [r2]
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beq LSYM(Lepilogue_vfp)
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@@ -425,7 +410,7 @@ LSYM(Lepilogue_vfp):
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.size CNAME(ffi_call_VFP),.ffi_call_VFP_end-CNAME(ffi_call_VFP)
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ARM_FUNC_START ffi_closure_VFP
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ARM_FUNC_START(ffi_closure_VFP)
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fstmfdd sp!, {d0-d7}
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@ r0-r3, then d0-d7
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UNWIND .pad #80
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@@ -458,7 +443,7 @@ ARM_FUNC_START ffi_closure_VFP
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cmp r0, #FFI_TYPE_STRUCT_VFP_DOUBLE
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beq .Lretdouble_struct_vfp
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.Lclosure_epilogue_vfp:
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add sp, sp, #72
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ldmfd sp, {sp, pc}
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