[PATCH 3/7] MIPS: Add option to export uasm API.

Prev: [PATCH 4/7] MIPS: Octeon: Export prom_putchar().
Next: Assist Me

From: David Daney on 23 Jul 2010 21:50

---

A 'select EXPORT_UASM' in Kconfig will cause the uasm to be exported
for use in modules. When it is exported, all the uasm data and code
cease to be __init and __initdata.

Also daddiu_bug cannot be __cpuinitdata if uasm is exported. The
cleanest thing is to just make it normal data.

Signed-off-by: David Daney <ddaney(a)caviumnetworks.com>
---
arch/mips/Kconfig | 3 +
arch/mips/include/asm/uasm.h | 37 ++++++++----
arch/mips/kernel/cpu-bugs64.c | 2 +-
arch/mips/mm/uasm.c | 131 +++++++++++++++++++++++++---------------
4 files changed, 110 insertions(+), 63 deletions(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index cdaae94..4588f42 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -892,6 +892,9 @@ config CPU_LITTLE_ENDIAN

endchoice

+config EXPORT_UASM
+ bool
+
config SYS_SUPPORTS_APM_EMULATION
bool

diff --git a/arch/mips/include/asm/uasm.h b/arch/mips/include/asm/uasm.h
index db9d449..892062d 100644
--- a/arch/mips/include/asm/uasm.h
+++ b/arch/mips/include/asm/uasm.h
@@ -10,44 +10,55 @@

#include <linux/types.h>

+#ifdef CONFIG_EXPORT_UASM
+#include <linux/module.h>
+#define __uasminit
+#define __uasminitdata
+#define UASM_EXPORT_SYMBOL(sym) EXPORT_SYMBOL(sym)
+#else
+#define __uasminit __cpuinit
+#define __uasminitdata __cpuinitdata
+#define UASM_EXPORT_SYMBOL(sym)
+#endif
+
#define Ip_u1u2u3(op) \
-void __cpuinit \
+void __uasminit \
uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)

#define Ip_u2u1u3(op) \
-void __cpuinit \
+void __uasminit \
uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)

#define Ip_u3u1u2(op) \
-void __cpuinit \
+void __uasminit \
uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)

#define Ip_u1u2s3(op) \
-void __cpuinit \
+void __uasminit \
uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)

#define Ip_u2s3u1(op) \
-void __cpuinit \
+void __uasminit \
uasm_i##op(u32 **buf, unsigned int a, signed int b, unsigned int c)

#define Ip_u2u1s3(op) \
-void __cpuinit \
+void __uasminit \
uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)

#define Ip_u2u1msbu3(op) \
-void __cpuinit \
+void __uasminit \
uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c, \
unsigned int d)

#define Ip_u1u2(op) \
-void __cpuinit uasm_i##op(u32 **buf, unsigned int a, unsigned int b)
+void __uasminit uasm_i##op(u32 **buf, unsigned int a, unsigned int b)

#define Ip_u1s2(op) \
-void __cpuinit uasm_i##op(u32 **buf, unsigned int a, signed int b)
+void __uasminit uasm_i##op(u32 **buf, unsigned int a, signed int b)

-#define Ip_u1(op) void __cpuinit uasm_i##op(u32 **buf, unsigned int a)
+#define Ip_u1(op) void __uasminit uasm_i##op(u32 **buf, unsigned int a)

-#define Ip_0(op) void __cpuinit uasm_i##op(u32 **buf)
+#define Ip_0(op) void __uasminit uasm_i##op(u32 **buf)

Ip_u2u1s3(_addiu);
Ip_u3u1u2(_addu);
@@ -112,7 +123,7 @@ struct uasm_label {
int lab;
};

-void __cpuinit uasm_build_label(struct uasm_label **lab, u32 *addr, int lid);
+void __uasminit uasm_build_label(struct uasm_label **lab, u32 *addr, int lid);
#ifdef CONFIG_64BIT
int uasm_in_compat_space_p(long addr);
#endif
@@ -122,7 +133,7 @@ void UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr);
void UASM_i_LA(u32 **buf, unsigned int rs, long addr);

#define UASM_L_LA(lb) \
-static inline void __cpuinit uasm_l##lb(struct uasm_label **lab, u32 *addr) \
+static inline void __uasminit uasm_l##lb(struct uasm_label **lab, u32 *addr) \
{ \
uasm_build_label(lab, addr, label##lb); \
}
diff --git a/arch/mips/kernel/cpu-bugs64.c b/arch/mips/kernel/cpu-bugs64.c
index 408d0a0..b8bb8ba 100644
--- a/arch/mips/kernel/cpu-bugs64.c
+++ b/arch/mips/kernel/cpu-bugs64.c
@@ -239,7 +239,7 @@ static inline void check_daddi(void)
panic(bug64hit, !DADDI_WAR ? daddiwar : nowar);
}

-int daddiu_bug __cpuinitdata = -1;
+int daddiu_bug = -1;

static inline void check_daddiu(void)
{
diff --git a/arch/mips/mm/uasm.c b/arch/mips/mm/uasm.c
index 636b817..d2647a4 100644
--- a/arch/mips/mm/uasm.c
+++ b/arch/mips/mm/uasm.c
@@ -86,7 +86,7 @@ struct insn {
| (e) << RE_SH \
| (f) << FUNC_SH)

-static struct insn insn_table[] __cpuinitdata = {
+static struct insn insn_table[] __uasminitdata = {
{ insn_addiu, M(addiu_op, 0, 0, 0, 0, 0), RS | RT | SIMM },
{ insn_addu, M(spec_op, 0, 0, 0, 0, addu_op), RS | RT | RD },
{ insn_and, M(spec_op, 0, 0, 0, 0, and_op), RS | RT | RD },
@@ -150,7 +150,7 @@ static struct insn insn_table[] __cpuinitdata = {

#undef M

-static inline __cpuinit u32 build_rs(u32 arg)
+static inline __uasminit u32 build_rs(u32 arg)
{
if (arg & ~RS_MASK)
printk(KERN_WARNING "Micro-assembler field overflow\n");
@@ -158,7 +158,7 @@ static inline __cpuinit u32 build_rs(u32 arg)
return (arg & RS_MASK) << RS_SH;
}

-static inline __cpuinit u32 build_rt(u32 arg)
+static inline __uasminit u32 build_rt(u32 arg)
{
if (arg & ~RT_MASK)
printk(KERN_WARNING "Micro-assembler field overflow\n");
@@ -166,7 +166,7 @@ static inline __cpuinit u32 build_rt(u32 arg)
return (arg & RT_MASK) << RT_SH;
}

-static inline __cpuinit u32 build_rd(u32 arg)
+static inline __uasminit u32 build_rd(u32 arg)
{
if (arg & ~RD_MASK)
printk(KERN_WARNING "Micro-assembler field overflow\n");
@@ -174,7 +174,7 @@ static inline __cpuinit u32 build_rd(u32 arg)
return (arg & RD_MASK) << RD_SH;
}

-static inline __cpuinit u32 build_re(u32 arg)
+static inline __uasminit u32 build_re(u32 arg)
{
if (arg & ~RE_MASK)
printk(KERN_WARNING "Micro-assembler field overflow\n");
@@ -182,7 +182,7 @@ static inline __cpuinit u32 build_re(u32 arg)
return (arg & RE_MASK) << RE_SH;
}

-static inline __cpuinit u32 build_simm(s32 arg)
+static inline __uasminit u32 build_simm(s32 arg)
{
if (arg > 0x7fff || arg < -0x8000)
printk(KERN_WARNING "Micro-assembler field overflow\n");
@@ -190,7 +190,7 @@ static inline __cpuinit u32 build_simm(s32 arg)
return arg & 0xffff;
}

-static inline __cpuinit u32 build_uimm(u32 arg)
+static inline __uasminit u32 build_uimm(u32 arg)
{
if (arg & ~IMM_MASK)
printk(KERN_WARNING "Micro-assembler field overflow\n");
@@ -198,7 +198,7 @@ static inline __cpuinit u32 build_uimm(u32 arg)
return arg & IMM_MASK;
}

-static inline __cpuinit u32 build_bimm(s32 arg)
+static inline __uasminit u32 build_bimm(s32 arg)
{
if (arg > 0x1ffff || arg < -0x20000)
printk(KERN_WARNING "Micro-assembler field overflow\n");
@@ -209,7 +209,7 @@ static inline __cpuinit u32 build_bimm(s32 arg)
return ((arg < 0) ? (1 << 15) : 0) | ((arg >> 2) & 0x7fff);
}

-static inline __cpuinit u32 build_jimm(u32 arg)
+static inline __uasminit u32 build_jimm(u32 arg)
{
if (arg & ~((JIMM_MASK) << 2))
printk(KERN_WARNING "Micro-assembler field overflow\n");
@@ -217,7 +217,7 @@ static inline __cpuinit u32 build_jimm(u32 arg)
return (arg >> 2) & JIMM_MASK;
}

-static inline __cpuinit u32 build_scimm(u32 arg)
+static inline __uasminit u32 build_scimm(u32 arg)
{
if (arg & ~SCIMM_MASK)
printk(KERN_WARNING "Micro-assembler field overflow\n");
@@ -225,7 +225,7 @@ static inline __cpuinit u32 build_scimm(u32 arg)
return (arg & SCIMM_MASK) << SCIMM_SH;
}

-static inline __cpuinit u32 build_func(u32 arg)
+static inline __uasminit u32 build_func(u32 arg)
{
if (arg & ~FUNC_MASK)
printk(KERN_WARNING "Micro-assembler field overflow\n");
@@ -233,7 +233,7 @@ static inline __cpuinit u32 build_func(u32 arg)
return arg & FUNC_MASK;
}

-static inline __cpuinit u32 build_set(u32 arg)
+static inline __uasminit u32 build_set(u32 arg)
{
if (arg & ~SET_MASK)
printk(KERN_WARNING "Micro-assembler field overflow\n");
@@ -245,7 +245,7 @@ static inline __cpuinit u32 build_set(u32 arg)
* The order of opcode arguments is implicitly left to right,
* starting with RS and ending with FUNC or IMM.
*/
-static void __cpuinit build_insn(u32 **buf, enum opcode opc, ...)
+static void __uasminit build_insn(u32 **buf, enum opcode opc, ...)
{
struct insn *ip = NULL;
unsigned int i;
@@ -295,67 +295,78 @@ static void __cpuinit build_insn(u32 **buf, enum opcode opc, ...)
Ip_u1u2u3(op) \
{ \
build_insn(buf, insn##op, a, b, c); \
-}
+} \
+UASM_EXPORT_SYMBOL(uasm_i##op);

#define I_u2u1u3(op) \
Ip_u2u1u3(op) \
{ \
build_insn(buf, insn##op, b, a, c); \
-}
+} \
+UASM_EXPORT_SYMBOL(uasm_i##op);

#define I_u3u1u2(op) \
Ip_u3u1u2(op) \
{ \
build_insn(buf, insn##op, b, c, a); \
-}
+} \
+UASM_EXPORT_SYMBOL(uasm_i##op);

#define I_u1u2s3(op) \
Ip_u1u2s3(op) \
{ \
build_insn(buf, insn##op, a, b, c); \
-}
+} \
+UASM_EXPORT_SYMBOL(uasm_i##op);

#define I_u2s3u1(op) \
Ip_u2s3u1(op) \
{ \
build_insn(buf, insn##op, c, a, b); \
-}
+} \
+UASM_EXPORT_SYMBOL(uasm_i##op);

#define I_u2u1s3(op) \
Ip_u2u1s3(op) \
{ \
build_insn(buf, insn##op, b, a, c); \
-}
+} \
+UASM_EXPORT_SYMBOL(uasm_i##op);

#define I_u2u1msbu3(op) \
Ip_u2u1msbu3(op) \
{ \
build_insn(buf, insn##op, b, a, c+d-1, c); \
-}
+} \
+UASM_EXPORT_SYMBOL(uasm_i##op);

#define I_u1u2(op) \
Ip_u1u2(op) \
{ \
build_insn(buf, insn##op, a, b); \
-}
+} \
+UASM_EXPORT_SYMBOL(uasm_i##op);

#define I_u1s2(op) \
Ip_u1s2(op) \
{ \
build_insn(buf, insn##op, a, b); \
-}
+} \
+UASM_EXPORT_SYMBOL(uasm_i##op);

#define I_u1(op) \
Ip_u1(op) \
{ \
build_insn(buf, insn##op, a); \
-}
+} \
+UASM_EXPORT_SYMBOL(uasm_i##op);

#define I_0(op) \
Ip_0(op) \
{ \
build_insn(buf, insn##op); \
-}
+} \
+UASM_EXPORT_SYMBOL(uasm_i##op);

I_u2u1s3(_addiu)
I_u3u1u2(_addu)
@@ -417,14 +428,15 @@ I_u1u2s3(_bbit0);
I_u1u2s3(_bbit1);

/* Handle labels. */
-void __cpuinit uasm_build_label(struct uasm_label **lab, u32 *addr, int lid)
+void __uasminit uasm_build_label(struct uasm_label **lab, u32 *addr, int lid)
{
(*lab)->addr = addr;
(*lab)->lab = lid;
(*lab)++;
}
+UASM_EXPORT_SYMBOL(uasm_build_label);

-int __cpuinit uasm_in_compat_space_p(long addr)
+int __uasminit uasm_in_compat_space_p(long addr)
{
/* Is this address in 32bit compat space? */
#ifdef CONFIG_64BIT
@@ -433,8 +445,9 @@ int __cpuinit uasm_in_compat_space_p(long addr)
return 1;
#endif
}
+UASM_EXPORT_SYMBOL(uasm_in_compat_space_p);

-static int __cpuinit uasm_rel_highest(long val)
+static int __uasminit uasm_rel_highest(long val)
{
#ifdef CONFIG_64BIT
return ((((val + 0x800080008000L) >> 48) & 0xffff) ^ 0x8000) - 0x8000;
@@ -443,7 +456,7 @@ static int __cpuinit uasm_rel_highest(long val)
#endif
}

-static int __cpuinit uasm_rel_higher(long val)
+static int __uasminit uasm_rel_higher(long val)
{
#ifdef CONFIG_64BIT
return ((((val + 0x80008000L) >> 32) & 0xffff) ^ 0x8000) - 0x8000;
@@ -452,17 +465,19 @@ static int __cpuinit uasm_rel_higher(long val)
#endif
}

-int __cpuinit uasm_rel_hi(long val)
+int __uasminit uasm_rel_hi(long val)
{
return ((((val + 0x8000L) >> 16) & 0xffff) ^ 0x8000) - 0x8000;
}
+UASM_EXPORT_SYMBOL(uasm_rel_hi);

-int __cpuinit uasm_rel_lo(long val)
+int __uasminit uasm_rel_lo(long val)
{
return ((val & 0xffff) ^ 0x8000) - 0x8000;
}
+UASM_EXPORT_SYMBOL(uasm_rel_lo);

-void __cpuinit UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr)
+void __uasminit UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr)
{
if (!uasm_in_compat_space_p(addr)) {
uasm_i_lui(buf, rs, uasm_rel_highest(addr));
@@ -477,8 +492,9 @@ void __cpuinit UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr)
} else
uasm_i_lui(buf, rs, uasm_rel_hi(addr));
}
+UASM_EXPORT_SYMBOL(UASM_i_LA_mostly);

-void __cpuinit UASM_i_LA(u32 **buf, unsigned int rs, long addr)
+void __uasminit UASM_i_LA(u32 **buf, unsigned int rs, long addr)
{
UASM_i_LA_mostly(buf, rs, addr);
if (uasm_rel_lo(addr)) {
@@ -488,9 +504,10 @@ void __cpuinit UASM_i_LA(u32 **buf, unsigned int rs, long addr)
uasm_i_addiu(buf, rs, rs, uasm_rel_lo(addr));
}
}
+UASM_EXPORT_SYMBOL(UASM_i_LA);

/* Handle relocations. */
-void __cpuinit
+void __uasminit
uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid)
{
(*rel)->addr = addr;
@@ -498,8 +515,9 @@ uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid)
(*rel)->lab = lid;
(*rel)++;
}
+UASM_EXPORT_SYMBOL(uasm_r_mips_pc16);

-static inline void __cpuinit
+static inline void __uasminit
__resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab)
{
long laddr = (long)lab->addr;
@@ -516,7 +534,7 @@ __resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab)
}
}

-void __cpuinit
+void __uasminit
uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab)
{
struct uasm_label *l;
@@ -526,24 +544,27 @@ uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab)
if (rel->lab == l->lab)
__resolve_relocs(rel, l);
}
+UASM_EXPORT_SYMBOL(uasm_resolve_relocs);

-void __cpuinit
+void __uasminit
uasm_move_relocs(struct uasm_reloc *rel, u32 *first, u32 *end, long off)
{
for (; rel->lab != UASM_LABEL_INVALID; rel++)
if (rel->addr >= first && rel->addr < end)
rel->addr += off;
}
+UASM_EXPORT_SYMBOL(uasm_move_relocs);

-void __cpuinit
+void __uasminit
uasm_move_labels(struct uasm_label *lab, u32 *first, u32 *end, long off)
{
for (; lab->lab != UASM_LABEL_INVALID; lab++)
if (lab->addr >= first && lab->addr < end)
lab->addr += off;
}
+UASM_EXPORT_SYMBOL(uasm_move_labels);

-void __cpuinit
+void __uasminit
uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab, u32 *first,
u32 *end, u32 *target)
{
@@ -554,8 +575,9 @@ uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab, u32 *first,
uasm_move_relocs(rel, first, end, off);
uasm_move_labels(lab, first, end, off);
}
+UASM_EXPORT_SYMBOL(uasm_copy_handler);

-int __cpuinit uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr)
+int __uasminit uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr)
{
for (; rel->lab != UASM_LABEL_INVALID; rel++) {
if (rel->addr == addr
@@ -566,77 +588,88 @@ int __cpuinit uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr)

return 0;
}
+UASM_EXPORT_SYMBOL(uasm_insn_has_bdelay);

/* Convenience functions for labeled branches. */
-void __cpuinit
+void __uasminit
uasm_il_bltz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
{
uasm_r_mips_pc16(r, *p, lid);
uasm_i_bltz(p, reg, 0);
}
+UASM_EXPORT_SYMBOL(uasm_il_bltz);

-void __cpuinit
+void __uasminit
uasm_il_b(u32 **p, struct uasm_reloc **r, int lid)
{
uasm_r_mips_pc16(r, *p, lid);
uasm_i_b(p, 0);
}
+UASM_EXPORT_SYMBOL(uasm_il_b);

-void __cpuinit
+void __uasminit
uasm_il_beqz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
{
uasm_r_mips_pc16(r, *p, lid);
uasm_i_beqz(p, reg, 0);
}
+UASM_EXPORT_SYMBOL(uasm_il_beqz);

-void __cpuinit
+void __uasminit
uasm_il_beqzl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
{
uasm_r_mips_pc16(r, *p, lid);
uasm_i_beqzl(p, reg, 0);
}
+UASM_EXPORT_SYMBOL(uasm_il_beqzl);

-void __cpuinit
+void __uasminit
uasm_il_bne(u32 **p, struct uasm_reloc **r, unsigned int reg1,
unsigned int reg2, int lid)
{
uasm_r_mips_pc16(r, *p, lid);
uasm_i_bne(p, reg1, reg2, 0);
}
+UASM_EXPORT_SYMBOL(uasm_il_bne);

-void __cpuinit
+void __uasminit
uasm_il_bnez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
{
uasm_r_mips_pc16(r, *p, lid);
uasm_i_bnez(p, reg, 0);
}
+UASM_EXPORT_SYMBOL(uasm_il_bnez);

-void __cpuinit
+void __uasminit
uasm_il_bgezl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
{
uasm_r_mips_pc16(r, *p, lid);
uasm_i_bgezl(p, reg, 0);
}
+UASM_EXPORT_SYMBOL(uasm_il_bgezl);

-void __cpuinit
+void __uasminit
uasm_il_bgez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid)
{
uasm_r_mips_pc16(r, *p, lid);
uasm_i_bgez(p, reg, 0);
}
+UASM_EXPORT_SYMBOL(uasm_il_bgez);

-void __cpuinit
+void __uasminit
uasm_il_bbit0(u32 **p, struct uasm_reloc **r, unsigned int reg,
unsigned int bit, int lid)
{
uasm_r_mips_pc16(r, *p, lid);
uasm_i_bbit0(p, reg, bit, 0);
}
+UASM_EXPORT_SYMBOL(uasm_il_bbit0);

-void __cpuinit
+void __uasminit
uasm_il_bbit1(u32 **p, struct uasm_reloc **r, unsigned int reg,
unsigned int bit, int lid)
{
uasm_r_mips_pc16(r, *p, lid);
uasm_i_bbit1(p, reg, bit, 0);
}
+UASM_EXPORT_SYMBOL(uasm_il_bbit1);
--
1.7.1.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

 | 
Pages: 1
Prev: [PATCH 4/7] MIPS: Octeon: Export prom_putchar().
Next: Assist Me