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sh: SH-2A FPU support.

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Signed-off-by: Kieran Bingham <[email protected]>
Signed-off-by: Paul Mundt <[email protected]>
This commit is contained in:
Paul Mundt 2007-11-26 20:38:36 +09:00
commit 74d99a5e26
11 changed files with 673 additions and 30 deletions
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2
include/asm-sh/fpu.h
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@ -26,6 +26,8 @@ extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs);
#define save_fpu(tsk, regs) do { } while (0)
#endif
extern int do_fpu_inst(unsigned short, struct pt_regs *);
#define unlazy_fpu(tsk, regs) do { \
if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \
save_fpu(tsk, regs); \

3
include/asm-sh/sigcontext.h
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@ -25,7 +25,8 @@ struct sigcontext {
unsigned long sc_mach;
unsigned long sc_macl;
#if defined(__SH4__) || defined(CONFIG_CPU_SH4)
#if defined(__SH4__) || defined(CONFIG_CPU_SH4) || \
defined(__SH2A__) || defined(CONFIG_CPU_SH2A)
/* FPU registers */
unsigned long sc_fpregs[16];
unsigned long sc_xfpregs[16];

2
include/asm-sh/system.h
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@ -205,6 +205,8 @@ asmlinkage void name##_trap_handler(unsigned int vec, struct pt_regs *regs)
BUILD_TRAP_HANDLER(address_error);
BUILD_TRAP_HANDLER(debug);
BUILD_TRAP_HANDLER(bug);
BUILD_TRAP_HANDLER(fpu_error);
BUILD_TRAP_HANDLER(fpu_state_restore);
#define arch_align_stack(x) (x)