| Message ID | 1387203165-5553-4-git-send-email-james.hogan@imgtec.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Dec 16, 2013 at 02:12:38PM +0000, James Hogan wrote: > Add preprocessor definitions for 32bit segment bases for use in > get_physical_address(). These will also be taken advantage of in the > next patch which adds KVM awareness. > > Signed-off-by: James Hogan <james.hogan@imgtec.com> > Cc: Aurelien Jarno <aurelien@aurel32.net> > --- > target-mips/helper.c | 18 ++++++++++++------ > 1 file changed, 12 insertions(+), 6 deletions(-) > > diff --git a/target-mips/helper.c b/target-mips/helper.c > index 33e0e88..2e96655 100644 > --- a/target-mips/helper.c > +++ b/target-mips/helper.c > @@ -118,7 +118,13 @@ static int get_physical_address (CPUMIPSState *env, hwaddr *physical, > qemu_log("user mode %d h %08x\n", user_mode, env->hflags); > #endif > > - if (address <= (int32_t)0x7FFFFFFFUL) { > +#define USEG_LIMIT 0x7FFFFFFFUL > +#define KSEG0_BASE 0x80000000UL > +#define KSEG1_BASE 0xA0000000UL > +#define KSEG2_BASE 0xC0000000UL > +#define KSEG3_BASE 0xE0000000UL > + > + if (address <= USEG_LIMIT) { > /* useg */ > if (env->CP0_Status & (1 << CP0St_ERL)) { > *physical = address & 0xFFFFFFFF; > @@ -160,23 +166,23 @@ static int get_physical_address (CPUMIPSState *env, hwaddr *physical, > ret = TLBRET_BADADDR; > } > #endif > - } else if (address < (int32_t)0xA0000000UL) { > + } else if (address < (int32_t)KSEG1_BASE) { > /* kseg0 */ > if (kernel_mode) { > - *physical = address - (int32_t)0x80000000UL; > + *physical = address - (int32_t)KSEG0_BASE; > *prot = PAGE_READ | PAGE_WRITE; > } else { > ret = TLBRET_BADADDR; > } > - } else if (address < (int32_t)0xC0000000UL) { > + } else if (address < (int32_t)KSEG2_BASE) { > /* kseg1 */ > if (kernel_mode) { > - *physical = address - (int32_t)0xA0000000UL; > + *physical = address - (int32_t)KSEG1_BASE; > *prot = PAGE_READ | PAGE_WRITE; > } else { > ret = TLBRET_BADADDR; > } > - } else if (address < (int32_t)0xE0000000UL) { > + } else if (address < (int32_t)KSEG3_BASE) { > /* sseg (kseg2) */ > if (supervisor_mode || kernel_mode) { > ret = env->tlb->map_address(env, physical, prot, address, rw, access_type); Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
diff --git a/target-mips/helper.c b/target-mips/helper.c index 33e0e88..2e96655 100644 --- a/target-mips/helper.c +++ b/target-mips/helper.c @@ -118,7 +118,13 @@ static int get_physical_address (CPUMIPSState *env, hwaddr *physical, qemu_log("user mode %d h %08x\n", user_mode, env->hflags); #endif - if (address <= (int32_t)0x7FFFFFFFUL) { +#define USEG_LIMIT 0x7FFFFFFFUL +#define KSEG0_BASE 0x80000000UL +#define KSEG1_BASE 0xA0000000UL +#define KSEG2_BASE 0xC0000000UL +#define KSEG3_BASE 0xE0000000UL + + if (address <= USEG_LIMIT) { /* useg */ if (env->CP0_Status & (1 << CP0St_ERL)) { *physical = address & 0xFFFFFFFF; @@ -160,23 +166,23 @@ static int get_physical_address (CPUMIPSState *env, hwaddr *physical, ret = TLBRET_BADADDR; } #endif - } else if (address < (int32_t)0xA0000000UL) { + } else if (address < (int32_t)KSEG1_BASE) { /* kseg0 */ if (kernel_mode) { - *physical = address - (int32_t)0x80000000UL; + *physical = address - (int32_t)KSEG0_BASE; *prot = PAGE_READ | PAGE_WRITE; } else { ret = TLBRET_BADADDR; } - } else if (address < (int32_t)0xC0000000UL) { + } else if (address < (int32_t)KSEG2_BASE) { /* kseg1 */ if (kernel_mode) { - *physical = address - (int32_t)0xA0000000UL; + *physical = address - (int32_t)KSEG1_BASE; *prot = PAGE_READ | PAGE_WRITE; } else { ret = TLBRET_BADADDR; } - } else if (address < (int32_t)0xE0000000UL) { + } else if (address < (int32_t)KSEG3_BASE) { /* sseg (kseg2) */ if (supervisor_mode || kernel_mode) { ret = env->tlb->map_address(env, physical, prot, address, rw, access_type);
Add preprocessor definitions for 32bit segment bases for use in get_physical_address(). These will also be taken advantage of in the next patch which adds KVM awareness. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Aurelien Jarno <aurelien@aurel32.net> --- target-mips/helper.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-)