58 lines
1.6 KiB
Diff
58 lines
1.6 KiB
Diff
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From 0a337328411d5b3f37b169a83b6fee3f1726130f Mon Sep 17 00:00:00 2001
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From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Date: Thu, 26 May 2016 15:57:33 +0200
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Subject: [PATCH] Support architectures with non-empty __USER_LABEL_PREFIX__
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On some architectures (like Blackfin), a C symbol does not directly
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match with assembly symbols. The C symbol references are in fact all
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prefixed by a so-called "user label prefix". So when a symbol defined
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in an assembly file needs to be referenced from C, this symbol should
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be prefixed by the "user label prefix".
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This commit updates dtddata.S to take into account
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__USER_LABEL_PREFIX__ when it exists.
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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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---
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src/dtddata.S | 19 +++++++++++++------
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1 file changed, 13 insertions(+), 6 deletions(-)
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diff --git a/src/dtddata.S b/src/dtddata.S
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index ce51133..ad2a4db 100644
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--- a/src/dtddata.S
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+++ b/src/dtddata.S
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@@ -30,17 +30,24 @@
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/* from: http://www.linuxjournal.com/content/embedding-file-executable-aka-hello-world-version-5967#comment-348129 */
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+#ifdef __USER_LABEL_PREFIX__
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+#define CONCAT1(a, b) CONCAT2(a, b)
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+#define CONCAT2(a, b) a ## b
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+#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
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+#else
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+#endif
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+
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.macro binfile name file
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.p2align 2
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- .globl \name\()_begin
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-\name\()_begin:
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+ .globl SYM(\name\()_begin)
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+SYM(\name\()_begin):
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.incbin "\file"
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-\name\()_end:
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+SYM(\name\()_end):
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.byte 0
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.p2align 2
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- .globl \name\()_len
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-\name\()_len:
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- .int (\name\()_end - \name\()_begin)
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+ .globl SYM(\name\()_len)
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+SYM(\name\()_len):
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+ .int (SYM(\name\()_end) - SYM(\name\()_begin))
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.endm
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.section .rodata
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--
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2.7.4
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