powerpc: Merge STK_REG/PARAM/FRAMESIZE

Merge the defines of STACKFRAMESIZE, STK_REG, STK_PARAM from different
places.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
index f6f67db..c0c6318 100644 (file)
--- a/arch/powerpc/include/asm/ppc_asm.h
+++ b/arch/powerpc/include/asm/ppc_asm.h
@@ -181,6 +181,11 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR)
 #ifdef __KERNEL__
 #ifdef CONFIG_PPC64
 
+#define STACKFRAMESIZE 256
+#define STK_REG(i)     (112 + ((i)-14)*8)
+
+#define STK_PARAM(i)   (48 + ((i)-3)*8)
+
 #define XGLUE(a,b) a##b
 #define GLUE(a,b) XGLUE(a,b)
 

diff --git a/arch/powerpc/lib/checksum_64.S b/arch/powerpc/lib/checksum_64.S
index 7ca6871..167f725 100644 (file)
--- a/arch/powerpc/lib/checksum_64.S
+++ b/arch/powerpc/lib/checksum_64.S
@@ -65,9 +65,6 @@ _GLOBAL(csum_tcpudp_magic)
        srwi    r3,r3,16
        blr
 
-#define STACKFRAMESIZE 256
-#define STK_REG(i)     (112 + ((i)-14)*8)
-
 /*
  * Computes the checksum of a memory block at buff, length len,
  * and adds in "sum" (32-bit).

diff --git a/arch/powerpc/lib/copypage_power7.S b/arch/powerpc/lib/copypage_power7.S
index a2126ce..0ef75bf 100644 (file)
--- a/arch/powerpc/lib/copypage_power7.S
+++ b/arch/powerpc/lib/copypage_power7.S
@@ -20,9 +20,6 @@
 #include <asm/page.h>
 #include <asm/ppc_asm.h>
 
-#define STACKFRAMESIZE 256
-#define STK_REG(i)     (112 + ((i)-14)*8)
-
 _GLOBAL(copypage_power7)
        /*
         * We prefetch both the source and destination using enhanced touch

diff --git a/arch/powerpc/lib/copyuser_power7.S b/arch/powerpc/lib/copyuser_power7.S
index c8680c0..f9ede7c 100644 (file)
--- a/arch/powerpc/lib/copyuser_power7.S
+++ b/arch/powerpc/lib/copyuser_power7.S
@@ -19,9 +19,6 @@
  */
 #include <asm/ppc_asm.h>
 
-#define STACKFRAMESIZE 256
-#define STK_REG(i)     (112 + ((i)-14)*8)
-
        .macro err1
 100:
        .section __ex_table,"a"

diff --git a/arch/powerpc/lib/memcpy_power7.S b/arch/powerpc/lib/memcpy_power7.S
index 04524a2..0efdc51 100644 (file)
--- a/arch/powerpc/lib/memcpy_power7.S
+++ b/arch/powerpc/lib/memcpy_power7.S
@@ -19,9 +19,6 @@
  */
 #include <asm/ppc_asm.h>
 
-#define STACKFRAMESIZE 256
-#define STK_REG(i)     (112 + ((i)-14)*8)
-
 _GLOBAL(memcpy_power7)
 #ifdef CONFIG_ALTIVEC
        cmpldi  r5,16

diff --git a/arch/powerpc/mm/hash_low_64.S b/arch/powerpc/mm/hash_low_64.S
index 113dcb0..602aeb0 100644 (file)
--- a/arch/powerpc/mm/hash_low_64.S
+++ b/arch/powerpc/mm/hash_low_64.S
@@ -34,14 +34,6 @@
  *         |   CR save area                    (SP + 8)
  * SP ---> +-- Back chain                      (SP + 0)
  */
-#define STACKFRAMESIZE 256
-
-/* Save parameters offsets */
-#define STK_PARM(i)    (STACKFRAMESIZE + 48 + ((i)-3)*8)
-
-/* Save non-volatile offsets */
-#define STK_REG(i)     (112 + ((i)-14)*8)
-
 
 #ifndef CONFIG_PPC_64K_PAGES
 
@@ -64,9 +56,9 @@ _GLOBAL(__hash_page_4K)
        std     r0,16(r1)
        stdu    r1,-STACKFRAMESIZE(r1)
        /* Save all params that we need after a function call */
-       std     r6,STK_PARM(R6)(r1)
-       std     r8,STK_PARM(R8)(r1)
-       std     r9,STK_PARM(R9)(r1)
+       std     r6,STK_PARAM(R6)(r1)
+       std     r8,STK_PARAM(R8)(r1)
+       std     r9,STK_PARAM(R9)(r1)
        
        /* Save non-volatile registers.
         * r31 will hold "old PTE"
@@ -162,7 +154,7 @@ END_FTR_SECTION(CPU_FTR_NOEXECUTE|CPU_FTR_COHERENT_ICACHE, CPU_FTR_NOEXECUTE)
        /* At this point, r3 contains new PP bits, save them in
         * place of "access" in the param area (sic)
         */
-       std     r3,STK_PARM(R4)(r1)
+       std     r3,STK_PARAM(R4)(r1)
 
        /* Get htab_hash_mask */
        ld      r4,htab_hash_mask@got(2)
@@ -192,11 +184,11 @@ htab_insert_pte:
        rldicr  r3,r0,3,63-3            /* r3 = (hash & mask) << 3 */
 
        /* Call ppc_md.hpte_insert */
-       ld      r6,STK_PARM(R4)(r1)     /* Retrieve new pp bits */
+       ld      r6,STK_PARAM(R4)(r1)    /* Retrieve new pp bits */
        mr      r4,r29                  /* Retrieve va */
        li      r7,0                    /* !bolted, !secondary */
        li      r8,MMU_PAGE_4K          /* page size */
-       ld      r9,STK_PARM(R9)(r1)     /* segment size */
+       ld      r9,STK_PARAM(R9)(r1)    /* segment size */
 _GLOBAL(htab_call_hpte_insert1)
        bl      .                       /* Patched by htab_finish_init() */
        cmpdi   0,r3,0
@@ -215,11 +207,11 @@ _GLOBAL(htab_call_hpte_insert1)
        rldicr  r3,r0,3,63-3    /* r0 = (~hash & mask) << 3 */
        
        /* Call ppc_md.hpte_insert */
-       ld      r6,STK_PARM(R4)(r1)     /* Retrieve new pp bits */
+       ld      r6,STK_PARAM(R4)(r1)    /* Retrieve new pp bits */
        mr      r4,r29                  /* Retrieve va */
        li      r7,HPTE_V_SECONDARY     /* !bolted, secondary */
        li      r8,MMU_PAGE_4K          /* page size */
-       ld      r9,STK_PARM(R9)(r1)     /* segment size */
+       ld      r9,STK_PARAM(R9)(r1)    /* segment size */
 _GLOBAL(htab_call_hpte_insert2)
        bl      .                       /* Patched by htab_finish_init() */
        cmpdi   0,r3,0
@@ -255,7 +247,7 @@ htab_pte_insert_ok:
         * (maybe add eieio may be good still ?)
         */
 htab_write_out_pte:
-       ld      r6,STK_PARM(R6)(r1)
+       ld      r6,STK_PARAM(R6)(r1)
        std     r30,0(r6)
        li      r3, 0
 htab_bail:
@@ -288,8 +280,8 @@ htab_modify_pte:
        /* Call ppc_md.hpte_updatepp */
        mr      r5,r29                  /* va */
        li      r6,MMU_PAGE_4K          /* page size */
-       ld      r7,STK_PARM(R9)(r1)     /* segment size */
-       ld      r8,STK_PARM(R8)(r1)     /* get "local" param */
+       ld      r7,STK_PARAM(R9)(r1)    /* segment size */
+       ld      r8,STK_PARAM(R8)(r1)    /* get "local" param */
 _GLOBAL(htab_call_hpte_updatepp)
        bl      .                       /* Patched by htab_finish_init() */
 
@@ -312,7 +304,7 @@ htab_wrong_access:
 
 htab_pte_insert_failure:
        /* Bail out restoring old PTE */
-       ld      r6,STK_PARM(R6)(r1)
+       ld      r6,STK_PARAM(R6)(r1)
        std     r31,0(r6)
        li      r3,-1
        b       htab_bail
@@ -340,9 +332,9 @@ _GLOBAL(__hash_page_4K)
        std     r0,16(r1)
        stdu    r1,-STACKFRAMESIZE(r1)
        /* Save all params that we need after a function call */
-       std     r6,STK_PARM(R6)(r1)
-       std     r8,STK_PARM(R8)(r1)
-       std     r9,STK_PARM(R9)(r1)
+       std     r6,STK_PARAM(R6)(r1)
+       std     r8,STK_PARAM(R8)(r1)
+       std     r9,STK_PARAM(R9)(r1)
 
        /* Save non-volatile registers.
         * r31 will hold "old PTE"
@@ -452,7 +444,7 @@ END_FTR_SECTION(CPU_FTR_NOEXECUTE|CPU_FTR_COHERENT_ICACHE, CPU_FTR_NOEXECUTE)
        /* At this point, r3 contains new PP bits, save them in
         * place of "access" in the param area (sic)
         */
-       std     r3,STK_PARM(R4)(r1)
+       std     r3,STK_PARAM(R4)(r1)
 
        /* Get htab_hash_mask */
        ld      r4,htab_hash_mask@got(2)
@@ -473,7 +465,7 @@ END_FTR_SECTION(CPU_FTR_NOEXECUTE|CPU_FTR_COHERENT_ICACHE, CPU_FTR_NOEXECUTE)
        andis.  r0,r31,_PAGE_COMBO@h
        beq     htab_inval_old_hpte
 
-       ld      r6,STK_PARM(R6)(r1)
+       ld      r6,STK_PARAM(R6)(r1)
        ori     r26,r6,0x8000           /* Load the hidx mask */
        ld      r26,0(r26)
        addi    r5,r25,36               /* Check actual HPTE_SUB bit, this */
@@ -495,11 +487,11 @@ htab_special_pfn:
        rldicr  r3,r0,3,63-3            /* r0 = (hash & mask) << 3 */
 
        /* Call ppc_md.hpte_insert */
-       ld      r6,STK_PARM(R4)(r1)     /* Retrieve new pp bits */
+       ld      r6,STK_PARAM(R4)(r1)    /* Retrieve new pp bits */
        mr      r4,r29                  /* Retrieve va */
        li      r7,0                    /* !bolted, !secondary */
        li      r8,MMU_PAGE_4K          /* page size */
-       ld      r9,STK_PARM(R9)(r1)     /* segment size */
+       ld      r9,STK_PARAM(R9)(r1)    /* segment size */
 _GLOBAL(htab_call_hpte_insert1)
        bl      .                       /* patched by htab_finish_init() */
        cmpdi   0,r3,0
@@ -522,11 +514,11 @@ _GLOBAL(htab_call_hpte_insert1)
        rldicr  r3,r0,3,63-3            /* r0 = (~hash & mask) << 3 */
 
        /* Call ppc_md.hpte_insert */
-       ld      r6,STK_PARM(R4)(r1)     /* Retrieve new pp bits */
+       ld      r6,STK_PARAM(R4)(r1)    /* Retrieve new pp bits */
        mr      r4,r29                  /* Retrieve va */
        li      r7,HPTE_V_SECONDARY     /* !bolted, secondary */
        li      r8,MMU_PAGE_4K          /* page size */
-       ld      r9,STK_PARM(R9)(r1)     /* segment size */
+       ld      r9,STK_PARAM(R9)(r1)    /* segment size */
 _GLOBAL(htab_call_hpte_insert2)
        bl      .                       /* patched by htab_finish_init() */
        cmpdi   0,r3,0
@@ -559,8 +551,8 @@ htab_inval_old_hpte:
        mr      r4,r31                  /* PTE.pte */
        li      r5,0                    /* PTE.hidx */
        li      r6,MMU_PAGE_64K         /* psize */
-       ld      r7,STK_PARM(R9)(r1)     /* ssize */
-       ld      r8,STK_PARM(R8)(r1)     /* local */
+       ld      r7,STK_PARAM(R9)(r1)    /* ssize */
+       ld      r8,STK_PARAM(R8)(r1)    /* local */
        bl      .flush_hash_page
        /* Clear out _PAGE_HPTE_SUB bits in the new linux PTE */
        lis     r0,_PAGE_HPTE_SUB@h
@@ -576,7 +568,7 @@ htab_pte_insert_ok:
        /* Insert slot number & secondary bit in PTE second half,
         * clear _PAGE_BUSY and set approriate HPTE slot bit
         */
-       ld      r6,STK_PARM(R6)(r1)
+       ld      r6,STK_PARAM(R6)(r1)
        li      r0,_PAGE_BUSY
        andc    r30,r30,r0
        /* HPTE SUB bit */
@@ -630,8 +622,8 @@ htab_modify_pte:
        /* Call ppc_md.hpte_updatepp */
        mr      r5,r29                  /* va */
        li      r6,MMU_PAGE_4K          /* page size */
-       ld      r7,STK_PARM(R9)(r1)     /* segment size */
-       ld      r8,STK_PARM(R8)(r1)     /* get "local" param */
+       ld      r7,STK_PARAM(R9)(r1)    /* segment size */
+       ld      r8,STK_PARAM(R8)(r1)    /* get "local" param */
 _GLOBAL(htab_call_hpte_updatepp)
        bl      .                       /* patched by htab_finish_init() */
 
@@ -644,7 +636,7 @@ _GLOBAL(htab_call_hpte_updatepp)
        /* Clear the BUSY bit and Write out the PTE */
        li      r0,_PAGE_BUSY
        andc    r30,r30,r0
-       ld      r6,STK_PARM(R6)(r1)
+       ld      r6,STK_PARAM(R6)(r1)
        std     r30,0(r6)
        li      r3,0
        b       htab_bail
@@ -657,7 +649,7 @@ htab_wrong_access:
 
 htab_pte_insert_failure:
        /* Bail out restoring old PTE */
-       ld      r6,STK_PARM(R6)(r1)
+       ld      r6,STK_PARAM(R6)(r1)
        std     r31,0(r6)
        li      r3,-1
        b       htab_bail
@@ -677,9 +669,9 @@ _GLOBAL(__hash_page_64K)
        std     r0,16(r1)
        stdu    r1,-STACKFRAMESIZE(r1)
        /* Save all params that we need after a function call */
-       std     r6,STK_PARM(R6)(r1)
-       std     r8,STK_PARM(R8)(r1)
-       std     r9,STK_PARM(R9)(r1)
+       std     r6,STK_PARAM(R6)(r1)
+       std     r8,STK_PARAM(R8)(r1)
+       std     r9,STK_PARAM(R9)(r1)
 
        /* Save non-volatile registers.
         * r31 will hold "old PTE"
@@ -780,7 +772,7 @@ END_FTR_SECTION(CPU_FTR_NOEXECUTE|CPU_FTR_COHERENT_ICACHE, CPU_FTR_NOEXECUTE)
        /* At this point, r3 contains new PP bits, save them in
         * place of "access" in the param area (sic)
         */
-       std     r3,STK_PARM(R4)(r1)
+       std     r3,STK_PARAM(R4)(r1)
 
        /* Get htab_hash_mask */
        ld      r4,htab_hash_mask@got(2)
@@ -813,11 +805,11 @@ ht64_insert_pte:
        rldicr  r3,r0,3,63-3    /* r0 = (hash & mask) << 3 */
 
        /* Call ppc_md.hpte_insert */
-       ld      r6,STK_PARM(R4)(r1)     /* Retrieve new pp bits */
+       ld      r6,STK_PARAM(R4)(r1)    /* Retrieve new pp bits */
        mr      r4,r29                  /* Retrieve va */
        li      r7,0                    /* !bolted, !secondary */
        li      r8,MMU_PAGE_64K
-       ld      r9,STK_PARM(R9)(r1)     /* segment size */
+       ld      r9,STK_PARAM(R9)(r1)    /* segment size */
 _GLOBAL(ht64_call_hpte_insert1)
        bl      .                       /* patched by htab_finish_init() */
        cmpdi   0,r3,0
@@ -836,11 +828,11 @@ _GLOBAL(ht64_call_hpte_insert1)
        rldicr  r3,r0,3,63-3    /* r0 = (~hash & mask) << 3 */
 
        /* Call ppc_md.hpte_insert */
-       ld      r6,STK_PARM(R4)(r1)     /* Retrieve new pp bits */
+       ld      r6,STK_PARAM(R4)(r1)    /* Retrieve new pp bits */
        mr      r4,r29                  /* Retrieve va */
        li      r7,HPTE_V_SECONDARY     /* !bolted, secondary */
        li      r8,MMU_PAGE_64K
-       ld      r9,STK_PARM(R9)(r1)     /* segment size */
+       ld      r9,STK_PARAM(R9)(r1)    /* segment size */
 _GLOBAL(ht64_call_hpte_insert2)
        bl      .                       /* patched by htab_finish_init() */
        cmpdi   0,r3,0
@@ -876,7 +868,7 @@ ht64_pte_insert_ok:
         * (maybe add eieio may be good still ?)
         */
 ht64_write_out_pte:
-       ld      r6,STK_PARM(R6)(r1)
+       ld      r6,STK_PARAM(R6)(r1)
        std     r30,0(r6)
        li      r3, 0
 ht64_bail:
@@ -909,8 +901,8 @@ ht64_modify_pte:
        /* Call ppc_md.hpte_updatepp */
        mr      r5,r29                  /* va */
        li      r6,MMU_PAGE_64K
-       ld      r7,STK_PARM(R9)(r1)     /* segment size */
-       ld      r8,STK_PARM(R8)(r1)     /* get "local" param */
+       ld      r7,STK_PARAM(R9)(r1)    /* segment size */
+       ld      r8,STK_PARAM(R8)(r1)    /* get "local" param */
 _GLOBAL(ht64_call_hpte_updatepp)
        bl      .                       /* patched by htab_finish_init() */
 
@@ -933,7 +925,7 @@ ht64_wrong_access:
 
 ht64_pte_insert_failure:
        /* Bail out restoring old PTE */
-       ld      r6,STK_PARM(R6)(r1)
+       ld      r6,STK_PARAM(R6)(r1)
        std     r31,0(r6)
        li      r3,-1
        b       ht64_bail

diff --git a/arch/powerpc/platforms/cell/beat_hvCall.S b/arch/powerpc/platforms/cell/beat_hvCall.S
index 079165e..96c8019 100644 (file)
--- a/arch/powerpc/platforms/cell/beat_hvCall.S
+++ b/arch/powerpc/platforms/cell/beat_hvCall.S
@@ -22,8 +22,6 @@
 
 #include <asm/ppc_asm.h>
 
-#define        STK_PARM(i)     (48 + ((i)-3)*8)
-
 /* Not implemented on Beat, now */
 #define        HCALL_INST_PRECALL
 #define        HCALL_INST_POSTCALL
@@ -74,7 +72,7 @@ _GLOBAL(beat_hcall_norets8)
        mr      r6,r7
        mr      r7,r8
        mr      r8,r9
-       ld      r10,STK_PARM(R10)(r1)
+       ld      r10,STK_PARAM(R10)(r1)
 
        HVSC                            /* invoke the hypervisor */
 
@@ -94,7 +92,7 @@ _GLOBAL(beat_hcall1)
 
        HCALL_INST_PRECALL
 
-       std     r4,STK_PARM(R4)(r1)     /* save ret buffer */
+       std     r4,STK_PARAM(R4)(r1)    /* save ret buffer */
 
        mr      r11,r3
        mr      r3,r5
@@ -108,7 +106,7 @@ _GLOBAL(beat_hcall1)
 
        HCALL_INST_POSTCALL
 
-       ld      r12,STK_PARM(R4)(r1)
+       ld      r12,STK_PARAM(R4)(r1)
        std     r4,  0(r12)
 
        lwz     r0,8(r1)
@@ -125,7 +123,7 @@ _GLOBAL(beat_hcall2)
 
        HCALL_INST_PRECALL
 
-       std     r4,STK_PARM(R4)(r1)     /* save ret buffer */
+       std     r4,STK_PARAM(R4)(r1)    /* save ret buffer */
 
        mr      r11,r3
        mr      r3,r5
@@ -139,7 +137,7 @@ _GLOBAL(beat_hcall2)
 
        HCALL_INST_POSTCALL
 
-       ld      r12,STK_PARM(R4)(r1)
+       ld      r12,STK_PARAM(R4)(r1)
        std     r4,  0(r12)
        std     r5,  8(r12)
 
@@ -157,7 +155,7 @@ _GLOBAL(beat_hcall3)
 
        HCALL_INST_PRECALL
 
-       std     r4,STK_PARM(R4)(r1)     /* save ret buffer */
+       std     r4,STK_PARAM(R4)(r1)    /* save ret buffer */
 
        mr      r11,r3
        mr      r3,r5
@@ -171,7 +169,7 @@ _GLOBAL(beat_hcall3)
 
        HCALL_INST_POSTCALL
 
-       ld      r12,STK_PARM(R4)(r1)
+       ld      r12,STK_PARAM(R4)(r1)
        std     r4,  0(r12)
        std     r5,  8(r12)
        std     r6, 16(r12)
@@ -190,7 +188,7 @@ _GLOBAL(beat_hcall4)
 
        HCALL_INST_PRECALL
 
-       std     r4,STK_PARM(R4)(r1)     /* save ret buffer */
+       std     r4,STK_PARAM(R4)(r1)    /* save ret buffer */
 
        mr      r11,r3
        mr      r3,r5
@@ -204,7 +202,7 @@ _GLOBAL(beat_hcall4)
 
        HCALL_INST_POSTCALL
 
-       ld      r12,STK_PARM(R4)(r1)
+       ld      r12,STK_PARAM(R4)(r1)
        std     r4,  0(r12)
        std     r5,  8(r12)
        std     r6, 16(r12)
@@ -224,7 +222,7 @@ _GLOBAL(beat_hcall5)
 
        HCALL_INST_PRECALL
 
-       std     r4,STK_PARM(R4)(r1)     /* save ret buffer */
+       std     r4,STK_PARAM(R4)(r1)    /* save ret buffer */
 
        mr      r11,r3
        mr      r3,r5
@@ -238,7 +236,7 @@ _GLOBAL(beat_hcall5)
 
        HCALL_INST_POSTCALL
 
-       ld      r12,STK_PARM(R4)(r1)
+       ld      r12,STK_PARAM(R4)(r1)
        std     r4,  0(r12)
        std     r5,  8(r12)
        std     r6, 16(r12)
@@ -259,7 +257,7 @@ _GLOBAL(beat_hcall6)
 
        HCALL_INST_PRECALL
 
-       std     r4,STK_PARM(R4)(r1)     /* save ret buffer */
+       std     r4,STK_PARAM(R4)(r1)    /* save ret buffer */
 
        mr      r11,r3
        mr      r3,r5
@@ -273,7 +271,7 @@ _GLOBAL(beat_hcall6)
 
        HCALL_INST_POSTCALL
 
-       ld      r12,STK_PARM(R4)(r1)
+       ld      r12,STK_PARAM(R4)(r1)
        std     r4,  0(r12)
        std     r5,  8(r12)
        std     r6, 16(r12)

diff --git a/arch/powerpc/platforms/powernv/opal-takeover.S b/arch/powerpc/platforms/powernv/opal-takeover.S
index 1bb7768..3cd2628 100644 (file)
--- a/arch/powerpc/platforms/powernv/opal-takeover.S
+++ b/arch/powerpc/platforms/powernv/opal-takeover.S
@@ -14,8 +14,6 @@
 #include <asm/asm-offsets.h>
 #include <asm/opal.h>
 
-#define STK_PARAM(i)   (48 + ((i)-3)*8)
-
 #define H_HAL_TAKEOVER                 0x5124
 #define H_HAL_TAKEOVER_QUERY_MAGIC     -1
 

diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S
index 04b8efd..444fe77 100644 (file)
--- a/arch/powerpc/platforms/pseries/hvCall.S
+++ b/arch/powerpc/platforms/pseries/hvCall.S
@@ -13,8 +13,6 @@
 #include <asm/asm-offsets.h>
 #include <asm/ptrace.h>
        
-#define STK_PARM(i)     (48 + ((i)-3)*8)
-
 #ifdef CONFIG_TRACEPOINTS
 
        .section        ".toc","aw"
@@ -26,7 +24,7 @@ hcall_tracepoint_refcount:
        .section        ".text"
 
 /*
- * precall must preserve all registers.  use unused STK_PARM()
+ * precall must preserve all registers.  use unused STK_PARAM()
  * areas to save snapshots and opcode. We branch around this
  * in early init (eg when populating the MMU hashtable) by using an
  * unconditional cpu feature.
@@ -40,28 +38,28 @@ END_FTR_SECTION(0, 1);                                              \
        cmpdi   r12,0;                                          \
        beq+    1f;                                             \
        mflr    r0;                                             \
-       std     r3,STK_PARM(R3)(r1);                            \
-       std     r4,STK_PARM(R4)(r1);                            \
-       std     r5,STK_PARM(R5)(r1);                            \
-       std     r6,STK_PARM(R6)(r1);                            \
-       std     r7,STK_PARM(R7)(r1);                            \
-       std     r8,STK_PARM(R8)(r1);                            \
-       std     r9,STK_PARM(R9)(r1);                            \
-       std     r10,STK_PARM(R10)(r1);                          \
+       std     r3,STK_PARAM(R3)(r1);                           \
+       std     r4,STK_PARAM(R4)(r1);                           \
+       std     r5,STK_PARAM(R5)(r1);                           \
+       std     r6,STK_PARAM(R6)(r1);                           \
+       std     r7,STK_PARAM(R7)(r1);                           \
+       std     r8,STK_PARAM(R8)(r1);                           \
+       std     r9,STK_PARAM(R9)(r1);                           \
+       std     r10,STK_PARAM(R10)(r1);                         \
        std     r0,16(r1);                                      \
-       addi    r4,r1,STK_PARM(FIRST_REG);                      \
+       addi    r4,r1,STK_PARAM(FIRST_REG);                     \
        stdu    r1,-STACK_FRAME_OVERHEAD(r1);                   \
        bl      .__trace_hcall_entry;                           \
        addi    r1,r1,STACK_FRAME_OVERHEAD;                     \
        ld      r0,16(r1);                                      \
-       ld      r3,STK_PARM(R3)(r1);                            \
-       ld      r4,STK_PARM(R4)(r1);                            \
-       ld      r5,STK_PARM(R5)(r1);                            \
-       ld      r6,STK_PARM(R6)(r1);                            \
-       ld      r7,STK_PARM(R7)(r1);                            \
-       ld      r8,STK_PARM(R8)(r1);                            \
-       ld      r9,STK_PARM(R9)(r1);                            \
-       ld      r10,STK_PARM(R10)(r1);                          \
+       ld      r3,STK_PARAM(R3)(r1);                           \
+       ld      r4,STK_PARAM(R4)(r1);                           \
+       ld      r5,STK_PARAM(R5)(r1);                           \
+       ld      r6,STK_PARAM(R6)(r1);                           \
+       ld      r7,STK_PARAM(R7)(r1);                           \
+       ld      r8,STK_PARAM(R8)(r1);                           \
+       ld      r9,STK_PARAM(R9)(r1);                           \
+       ld      r10,STK_PARAM(R10)(r1);                         \
        mtlr    r0;                                             \
 1:
 
@@ -79,8 +77,8 @@ END_FTR_SECTION(0, 1);                                                \
        cmpdi   r12,0;                                          \
        beq+    1f;                                             \
        mflr    r0;                                             \
-       ld      r6,STK_PARM(R3)(r1);                            \
-       std     r3,STK_PARM(R3)(r1);                            \
+       ld      r6,STK_PARAM(R3)(r1);                           \
+       std     r3,STK_PARAM(R3)(r1);                           \
        mr      r4,r3;                                          \
        mr      r3,r6;                                          \
        std     r0,16(r1);                                      \
@@ -88,7 +86,7 @@ END_FTR_SECTION(0, 1);                                                \
        bl      .__trace_hcall_exit;                            \
        addi    r1,r1,STACK_FRAME_OVERHEAD;                     \
        ld      r0,16(r1);                                      \
-       ld      r3,STK_PARM(R3)(r1);                            \
+       ld      r3,STK_PARAM(R3)(r1);                           \
        mtlr    r0;                                             \
 1:
 
@@ -132,7 +130,7 @@ _GLOBAL(plpar_hcall)
 
        HCALL_INST_PRECALL(R5)
 
-       std     r4,STK_PARM(R4)(r1)     /* Save ret buffer */
+       std     r4,STK_PARAM(R4)(r1)     /* Save ret buffer */
 
        mr      r4,r5
        mr      r5,r6
@@ -143,7 +141,7 @@ _GLOBAL(plpar_hcall)
 
        HVSC                            /* invoke the hypervisor */
 
-       ld      r12,STK_PARM(R4)(r1)
+       ld      r12,STK_PARAM(R4)(r1)
        std     r4,  0(r12)
        std     r5,  8(r12)
        std     r6, 16(r12)
@@ -168,7 +166,7 @@ _GLOBAL(plpar_hcall_raw)
        mfcr    r0
        stw     r0,8(r1)
 
-       std     r4,STK_PARM(R4)(r1)     /* Save ret buffer */
+       std     r4,STK_PARAM(R4)(r1)     /* Save ret buffer */
 
        mr      r4,r5
        mr      r5,r6
@@ -179,7 +177,7 @@ _GLOBAL(plpar_hcall_raw)
 
        HVSC                            /* invoke the hypervisor */
 
-       ld      r12,STK_PARM(R4)(r1)
+       ld      r12,STK_PARAM(R4)(r1)
        std     r4,  0(r12)
        std     r5,  8(r12)
        std     r6, 16(r12)
@@ -198,7 +196,7 @@ _GLOBAL(plpar_hcall9)
 
        HCALL_INST_PRECALL(R5)
 
-       std     r4,STK_PARM(R4)(r1)     /* Save ret buffer */
+       std     r4,STK_PARAM(R4)(r1)     /* Save ret buffer */
 
        mr      r4,r5
        mr      r5,r6
@@ -206,14 +204,14 @@ _GLOBAL(plpar_hcall9)
        mr      r7,r8
        mr      r8,r9
        mr      r9,r10
-       ld      r10,STK_PARM(R11)(r1)    /* put arg7 in R10 */
-       ld      r11,STK_PARM(R12)(r1)    /* put arg8 in R11 */
-       ld      r12,STK_PARM(R13)(r1)    /* put arg9 in R12 */
+       ld      r10,STK_PARAM(R11)(r1)   /* put arg7 in R10 */
+       ld      r11,STK_PARAM(R12)(r1)   /* put arg8 in R11 */
+       ld      r12,STK_PARAM(R13)(r1)    /* put arg9 in R12 */
 
        HVSC                            /* invoke the hypervisor */
 
        mr      r0,r12
-       ld      r12,STK_PARM(R4)(r1)
+       ld      r12,STK_PARAM(R4)(r1)
        std     r4,  0(r12)
        std     r5,  8(r12)
        std     r6, 16(r12)
@@ -238,7 +236,7 @@ _GLOBAL(plpar_hcall9_raw)
        mfcr    r0
        stw     r0,8(r1)
 
-       std     r4,STK_PARM(R4)(r1)     /* Save ret buffer */
+       std     r4,STK_PARAM(R4)(r1)     /* Save ret buffer */
 
        mr      r4,r5
        mr      r5,r6
@@ -246,14 +244,14 @@ _GLOBAL(plpar_hcall9_raw)
        mr      r7,r8
        mr      r8,r9
        mr      r9,r10
-       ld      r10,STK_PARM(R11)(r1)    /* put arg7 in R10 */
-       ld      r11,STK_PARM(R12)(r1)    /* put arg8 in R11 */
-       ld      r12,STK_PARM(R13)(r1)    /* put arg9 in R12 */
+       ld      r10,STK_PARAM(R11)(r1)   /* put arg7 in R10 */
+       ld      r11,STK_PARAM(R12)(r1)   /* put arg8 in R11 */
+       ld      r12,STK_PARAM(R13)(r1)    /* put arg9 in R12 */
 
        HVSC                            /* invoke the hypervisor */
 
        mr      r0,r12
-       ld      r12,STK_PARM(R4)(r1)
+       ld      r12,STK_PARAM(R4)(r1)
        std     r4,  0(r12)
        std     r5,  8(r12)
        std     r6, 16(r12)