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| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-09-10 07:47:39 +0200 |
|---|---|---|
| committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-09-14 23:28:52 +0200 |
| commit | 6b9966e1aa362e97e9b33b7b82ff713f2ddea2c1 (patch) | |
| tree | 14e78259abcd6048df08632b5aaba134beb80db4 | |
| parent | e5a31376acdd3f07a08be4433d9113ba61319204 (diff) | |
riscv: define function set_gd()
Function set_gd() is needed in the UEFI sub-system if the global data
pointer is stored in a register.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
| -rw-r--r-- | arch/riscv/include/asm/global_data.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/global_data.h b/arch/riscv/include/asm/global_data.h index 2eb14815bc..b711fcc44d 100644 --- a/arch/riscv/include/asm/global_data.h +++ b/arch/riscv/include/asm/global_data.h @@ -39,4 +39,13 @@ struct arch_global_data { #define DECLARE_GLOBAL_DATA_PTR register gd_t *gd asm ("gp") +static inline void set_gd(volatile gd_t *gd_ptr) +{ +#ifdef CONFIG_64BIT + asm volatile("ld gp, %0\n" : : "m"(gd_ptr)); +#else + asm volatile("lw gp, %0\n" : : "m"(gd_ptr)); +#endif +} + #endif /* __ASM_GBL_DATA_H */ |