Commit e78e17ad authored by Russell King's avatar Russell King

[ARM] Update nwfpe to use new fp_init hook.

Take FPA11_CheckInit out of the hot path, and use the fp_init hook
instead.
parent 6c7a027f
......@@ -73,8 +73,6 @@ nwfpe_enter:
mov r4, lr @ save the failure-return addresses
mov sl, sp
bl FPA11_CheckInit @ check to see if we are initialised
ldr r5, [sp, #60] @ get contents of PC;
sub r8, r5, #4
.Lx2: ldrt r0, [r8] @ get actual instruction into r0
......
......@@ -66,7 +66,6 @@ several floating point instructions. */
.globl nwfpe_enter
nwfpe_enter:
mov sl, sp
bl FPA11_CheckInit @ check to see if we are initialised
ldr r5, [sp, #60] @ get contents of PC
bic r5, r5, #0xfc000003
......
......@@ -34,7 +34,7 @@ unsigned int EmulateCPDT(const unsigned int);
unsigned int EmulateCPRT(const unsigned int);
/* Reset the FPA11 chip. Called to initialize and reset the emulator. */
void resetFPA11(void)
static void resetFPA11(void)
{
int i;
FPA11 *fpa11 = GET_FPA11();
......@@ -126,16 +126,14 @@ void SetRoundingPrecision(const unsigned int opcode)
}
}
void FPA11_CheckInit(void)
void nwfpe_init(union fp_state *fp)
{
FPA11 *fpa11 = GET_FPA11();
if (unlikely(fpa11->initflag == 0))
{
FPA11 *fpa11 = (FPA11 *)fp;
memset(fpa11, 0, sizeof(FPA11));
resetFPA11();
SetRoundingMode(ROUND_TO_NEAREST);
SetRoundingPrecision(ROUND_EXTENDED);
fpa11->initflag = 1;
}
}
/* Emulate the instruction in the opcode. */
......
......@@ -80,8 +80,8 @@ typedef struct tagFPA11 {
initialised. */
} FPA11;
extern void resetFPA11(void);
extern void SetRoundingMode(const unsigned int);
extern void SetRoundingPrecision(const unsigned int);
extern void nwfpe_init(union fp_state *fp);
#endif
......@@ -42,10 +42,8 @@
#include "fpa11.inl"
/* kernel symbols required for signal handling */
typedef struct task_struct* PTASK;
#ifdef MODULE
void fp_send_sig(unsigned long sig, PTASK p, int priv);
void fp_send_sig(unsigned long sig, struct task_struct *p, int priv);
#if LINUX_VERSION_CODE > 0x20115
MODULE_AUTHOR("Scott Bambrough <scottb@rebel.com>");
MODULE_DESCRIPTION("NWFPE floating point emulator");
......@@ -63,9 +61,11 @@ void fp_setup(void);
/* external declarations for saved kernel symbols */
extern void (*kern_fp_enter)(void);
extern void (*fp_init)(union fp_state *);
/* Original value of fp_enter from kernel before patched by fpe_init. */
static void (*orig_fp_enter)(void);
static void (*orig_fp_init)(union fp_state *);
/* forward declarations */
extern void nwfpe_enter(void);
......@@ -108,7 +108,9 @@ static int __init fpe_init(void)
/* Save pointer to the old FP handler and then patch ourselves in */
orig_fp_enter = kern_fp_enter;
orig_fp_init = fp_init;
kern_fp_enter = nwfpe_enter;
fp_init = nwfpe_init;
return 0;
}
......@@ -117,6 +119,7 @@ static void __exit fpe_exit(void)
{
/* Restore the values we saved earlier. */
kern_fp_enter = orig_fp_enter;
fp_init = orig_fp_init;
}
/*
......
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