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Add support for 64-bit MIPS to examples/standalone

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Signed-off-by: Stanislav Galabov <sgalabov@gmail.com>
This commit is contained in:
Stanislav Galabov 2016-02-17 15:23:33 +02:00 committed by Daniel Schwierzeck
parent 78757d52c8
commit 4a48cfc4e5
1 changed files with 18 additions and 0 deletions
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18
examples/standalone/stubs.c
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@ -65,6 +65,23 @@ gd_t *global_data;
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "ip");
#endif
#elif defined(CONFIG_MIPS)
#ifdef CONFIG_CPU_MIPS64
/*
* k0 ($26) holds the pointer to the global_data; t9 ($25) is a call-
* clobbered register that is also used to set gp ($26). Note that the
* jr instruction also executes the instruction immediately following
* it; however, GCC/mips generates an additional `nop' after each asm
* statement
*/
#define EXPORT_FUNC(f, a, x, ...) \
asm volatile ( \
" .globl " #x "\n" \
#x ":\n" \
" ld $25, %0($26)\n" \
" ld $25, %1($25)\n" \
" jr $25\n" \
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "t9");
#else
/*
* k0 ($26) holds the pointer to the global_data; t9 ($25) is a call-
* clobbered register that is also used to set gp ($26). Note that the
@ -80,6 +97,7 @@ gd_t *global_data;
" lw $25, %1($25)\n" \
" jr $25\n" \
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "t9");
#endif
#elif defined(CONFIG_NIOS2)
/*
* gp holds the pointer to the global_data, r8 is call-clobbered