r14 is not supposed to be clobbered by functions. Switch to r12 and call GET_GOT when needed. This will allow u-boot to loose the -ffixed-r14 gcc option. --- cpu/74xx_7xx/start.S | 11 ++++++----- cpu/mpc512x/start.S | 11 ++++++----- cpu/mpc5xx/start.S | 11 ++++++----- cpu/mpc5xxx/start.S | 11 ++++++----- cpu/mpc8220/start.S | 11 ++++++----- cpu/mpc824x/start.S | 11 ++++++----- cpu/mpc8260/start.S | 15 +++++++++------ cpu/mpc83xx/start.S | 11 ++++++----- cpu/mpc85xx/start.S | 11 ++++++----- cpu/mpc86xx/start.S | 11 ++++++----- cpu/mpc8xx/start.S | 11 ++++++----- cpu/ppc4xx/start.S | 11 ++++++----- include/ppc_asm.tmpl | 8 ++++---- 13 files changed, 79 insertions(+), 65 deletions(-)
diff --git a/cpu/74xx_7xx/start.S b/cpu/74xx_7xx/start.S index efcd95f..88fdf88 100644 --- a/cpu/74xx_7xx/start.S +++ b/cpu/74xx_7xx/start.S @@ -63,7 +63,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ START_GOT GOT_ENTRY(_GOT2_TABLE_) @@ -599,6 +599,7 @@ relocate_code: mr r9, r4 /* Save copy of Global Data pointer */ mr r10, r5 /* Save copy of Destination Address */
+ GET_GOT mr r3, r5 /* Destination Address */ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l @@ -616,7 +617,7 @@ relocate_code: sub r15, r10, r4
/* First our own GOT */ - add r14, r14, r15 + add r12, r12, r15 /* then the one used by the C code */ add r30, r30, r15
@@ -691,7 +692,7 @@ in_ram: bl board_init_ecc #endif /* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -765,6 +766,8 @@ in_ram: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7, GOT(_start) lwz r8, GOT(_end_of_vectors)
@@ -772,8 +775,6 @@ trap_init:
cmplw 0, r7, r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0, 0(r7) stw r0, 0(r9) diff --git a/cpu/mpc512x/start.S b/cpu/mpc512x/start.S index 46c5efa..d26b617 100644 --- a/cpu/mpc512x/start.S +++ b/cpu/mpc512x/start.S @@ -65,7 +65,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ START_GOT GOT_ENTRY(_GOT2_TABLE_) @@ -486,6 +486,7 @@ relocate_code: mr r9, r4 /* Save copy of Global Data pointer */ mr r10, r5 /* Save copy of Destination Address */
+ GET_GOT mr r3, r5 /* Destination Address */ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l @@ -504,7 +505,7 @@ relocate_code: sub r15, r10, r4
/* First our own GOT */ - add r14, r14, r15 + add r12, r12, r15 /* then the one used by the C code */ add r30, r30, r15
@@ -584,7 +585,7 @@ relocate_code:
in_ram: /* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -648,6 +649,8 @@ clear_bss: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7, GOT(_start) lwz r8, GOT(_end_of_vectors)
@@ -655,8 +658,6 @@ trap_init:
cmplw 0, r7, r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0, 0(r7) stw r0, 0(r9) diff --git a/cpu/mpc5xx/start.S b/cpu/mpc5xx/start.S index be980a1..0af879e 100644 --- a/cpu/mpc5xx/start.S +++ b/cpu/mpc5xx/start.S @@ -56,7 +56,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ START_GOT GOT_ENTRY(_GOT2_TABLE_) @@ -372,6 +372,7 @@ relocate_code: mr r9, r4 /* Save copy of global data pointer in SRAM */ mr r10, r5 /* Save copy of monitor destination Address in SRAM */
+ GET_GOT mr r3, r5 /* Destination Address */ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l @@ -388,7 +389,7 @@ relocate_code: sub r15, r10, r4
/* First our own GOT */ - add r14, r14, r15 + add r12, r12, r15 /* the the one used by the C code */ add r30, r30, r15
@@ -433,7 +434,7 @@ relocate_code: in_ram:
/* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -497,6 +498,8 @@ clear_bss: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7, GOT(_start) lwz r8, GOT(_end_of_vectors)
@@ -504,8 +507,6 @@ trap_init:
cmplw 0, r7, r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0, 0(r7) stw r0, 0(r9) diff --git a/cpu/mpc5xxx/start.S b/cpu/mpc5xxx/start.S index 075a7dd..d499da5 100644 --- a/cpu/mpc5xxx/start.S +++ b/cpu/mpc5xxx/start.S @@ -56,7 +56,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ START_GOT GOT_ENTRY(_GOT2_TABLE_) @@ -567,6 +567,7 @@ relocate_code: mr r9, r4 /* Save copy of Global Data pointer */ mr r10, r5 /* Save copy of Destination Address */
+ GET_GOT mr r3, r5 /* Destination Address */ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l @@ -584,7 +585,7 @@ relocate_code: sub r15, r10, r4
/* First our own GOT */ - add r14, r14, r15 + add r12, r12, r15 /* then the one used by the C code */ add r30, r30, r15
@@ -657,7 +658,7 @@ relocate_code: in_ram:
/* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -722,6 +723,8 @@ clear_bss: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7, GOT(_start) lwz r8, GOT(_end_of_vectors)
@@ -729,8 +732,6 @@ trap_init:
cmplw 0, r7, r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0, 0(r7) stw r0, 0(r9) diff --git a/cpu/mpc8220/start.S b/cpu/mpc8220/start.S index 5218c85..e28999d 100644 --- a/cpu/mpc8220/start.S +++ b/cpu/mpc8220/start.S @@ -55,7 +55,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ START_GOT GOT_ENTRY(_GOT2_TABLE_) @@ -532,6 +532,7 @@ relocate_code: mr r9, r4 /* Save copy of Global Data pointer */ mr r10, r5 /* Save copy of Destination Address */
+ GET_GOT mr r3, r5 /* Destination Address */ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l @@ -549,7 +550,7 @@ relocate_code: sub r15, r10, r4
/* First our own GOT */ - add r14, r14, r15 + add r12, r12, r15 /* then the one used by the C code */ add r30, r30, r15
@@ -622,7 +623,7 @@ relocate_code: in_ram:
/* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -687,6 +688,8 @@ clear_bss: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7, GOT(_start) lwz r8, GOT(_end_of_vectors)
@@ -694,8 +697,6 @@ trap_init:
cmplw 0, r7, r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0, 0(r7) stw r0, 0(r9) diff --git a/cpu/mpc824x/start.S b/cpu/mpc824x/start.S index 7f40648..f3f595a 100644 --- a/cpu/mpc824x/start.S +++ b/cpu/mpc824x/start.S @@ -63,7 +63,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ START_GOT GOT_ENTRY(_GOT2_TABLE_) @@ -462,6 +462,7 @@ relocate_code: mr r9, r4 /* Save copy of Global Data pointer */ mr r10, r5 /* Save copy of Destination Address */
+ GET_GOT mr r3, r5 /* Destination Address */ #ifdef CONFIG_SYS_RAMBOOT lis r4, CONFIG_SYS_SDRAM_BASE@h /* Source Address */ @@ -484,7 +485,7 @@ relocate_code: sub r15, r10, r4
/* First our own GOT */ - add r14, r14, r15 + add r12, r12, r15 /* the the one used by the C code */ add r30, r30, r15
@@ -564,7 +565,7 @@ relocate_code: in_ram:
/* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -629,6 +630,8 @@ clear_bss: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7, GOT(_start) lwz r8, GOT(_end_of_vectors)
@@ -636,8 +639,6 @@ trap_init:
cmplw 0, r7, r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0, 0(r7) stw r0, 0(r9) diff --git a/cpu/mpc8260/start.S b/cpu/mpc8260/start.S index 7d80af5..1fc70bc 100644 --- a/cpu/mpc8260/start.S +++ b/cpu/mpc8260/start.S @@ -56,7 +56,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ START_GOT GOT_ENTRY(_GOT2_TABLE_) @@ -650,7 +650,9 @@ init_debug: /* RAM should now be operational */
#define VEC_WRD_CNT ((_end_of_vectors - _start + EXC_OFF_SYS_RESET) / 4) - + mflr r3 + GET_GOT + mtlr r3 lwz r3, GOT(_end_of_vectors) rlwinm r4, r3, 0, 18, 31 /* _end_of_vectors & 0x3FFF */ lis r5, VEC_WRD_CNT@h @@ -792,6 +794,7 @@ relocate_code: mr r9, r4 /* Save copy of Global Data pointer */ mr r10, r5 /* Save copy of Destination Address */
+ GET_GOT mr r3, r5 /* Destination Address */ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l @@ -809,7 +812,7 @@ relocate_code: sub r15, r10, r4
/* First our own GOT */ - add r14, r14, r15 + add r12, r12, r15 /* then the one used by the C code */ add r30, r30, r15
@@ -882,7 +885,7 @@ relocate_code: in_ram:
/* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -958,6 +961,8 @@ clear_bss: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7, GOT(_start) lwz r8, GOT(_end_of_vectors)
@@ -965,8 +970,6 @@ trap_init:
cmplw 0, r7, r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0, 0(r7) stw r0, 0(r9) diff --git a/cpu/mpc83xx/start.S b/cpu/mpc83xx/start.S index 5a50b09..68bb620 100644 --- a/cpu/mpc83xx/start.S +++ b/cpu/mpc83xx/start.S @@ -65,7 +65,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ START_GOT GOT_ENTRY(_GOT2_TABLE_) @@ -830,6 +830,7 @@ relocate_code: mr r9, r4 /* Save copy of Global Data pointer */ mr r10, r5 /* Save copy of Destination Address */
+ GET_GOT mr r3, r5 /* Destination Address */ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l @@ -848,7 +849,7 @@ relocate_code: sub r15, r10, r4
/* First our own GOT */ - add r14, r14, r15 + add r12, r12, r15 /* then the one used by the C code */ add r30, r30, r15
@@ -930,7 +931,7 @@ relocate_code: in_ram:
/* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -1010,6 +1011,8 @@ clear_bss: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7, GOT(_start) lwz r8, GOT(_end_of_vectors)
@@ -1017,8 +1020,6 @@ trap_init:
cmplw 0, r7, r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0, 0(r7) stw r0, 0(r9) diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S index 6fafbb7..79306e2 100644 --- a/cpu/mpc85xx/start.S +++ b/cpu/mpc85xx/start.S @@ -51,7 +51,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ START_GOT GOT_ENTRY(_GOT2_TABLE_) @@ -865,6 +865,7 @@ relocate_code: mr r9,r4 /* Save copy of Init Data pointer */ mr r10,r5 /* Save copy of Destination Address */
+ GET_GOT mr r3,r5 /* Destination Address */ lis r4,CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4,r4,CONFIG_SYS_MONITOR_BASE@l @@ -882,7 +883,7 @@ relocate_code: sub r15,r10,r4
/* First our own GOT */ - add r14,r14,r15 + add r12,r12,r15 /* the the one used by the C code */ add r30,r30,r15
@@ -952,7 +953,7 @@ relocate_code: in_ram:
/* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -1018,6 +1019,8 @@ clear_bss: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7,GOT(_start_of_vectors) lwz r8,GOT(_end_of_vectors)
@@ -1025,8 +1028,6 @@ trap_init:
cmplw 0,r7,r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0,0(r7) stw r0,0(r9) diff --git a/cpu/mpc86xx/start.S b/cpu/mpc86xx/start.S index eaa2657..ed1e4ca 100644 --- a/cpu/mpc86xx/start.S +++ b/cpu/mpc86xx/start.S @@ -52,7 +52,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ START_GOT GOT_ENTRY(_GOT2_TABLE_) @@ -630,6 +630,7 @@ relocate_code: mr r9, r4 /* Save copy of Global Data pointer */ mr r10, r5 /* Save copy of Destination Address */
+ GET_GOT mr r3, r5 /* Destination Address */ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l @@ -647,7 +648,7 @@ relocate_code: sub r15, r10, r4
/* First our own GOT */ - add r14, r14, r15 + add r12, r12, r15 /* then the one used by the C code */ add r30, r30, r15
@@ -708,7 +709,7 @@ relocate_code:
in_ram: /* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -775,6 +776,8 @@ in_ram: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7, GOT(_start) lwz r8, GOT(_end_of_vectors)
@@ -782,8 +785,6 @@ trap_init:
cmplw 0, r7, r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0, 0(r7) stw r0, 0(r9) diff --git a/cpu/mpc8xx/start.S b/cpu/mpc8xx/start.S index 24e9053..7cf602f 100644 --- a/cpu/mpc8xx/start.S +++ b/cpu/mpc8xx/start.S @@ -63,7 +63,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ START_GOT GOT_ENTRY(_GOT2_TABLE_) @@ -482,6 +482,7 @@ relocate_code: mr r9, r4 /* Save copy of Global Data pointer */ mr r10, r5 /* Save copy of Destination Address */
+ GET_GOT mr r3, r5 /* Destination Address */ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l @@ -499,7 +500,7 @@ relocate_code: sub r15, r10, r4
/* First our own GOT */ - add r14, r14, r15 + add r12, r12, r15 /* then the one used by the C code */ add r30, r30, r15
@@ -564,7 +565,7 @@ relocate_code: in_ram:
/* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -629,6 +630,8 @@ clear_bss: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7, GOT(_start) lwz r8, GOT(_end_of_vectors)
@@ -636,8 +639,6 @@ trap_init:
cmplw 0, r7, r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0, 0(r7) stw r0, 0(r9) diff --git a/cpu/ppc4xx/start.S b/cpu/ppc4xx/start.S index 2eb21fa..927c88c 100644 --- a/cpu/ppc4xx/start.S +++ b/cpu/ppc4xx/start.S @@ -228,7 +228,7 @@ /* * Set up GOT: Global Offset Table * - * Use r14 to access the GOT + * Use r12 to access the GOT */ #if !defined(CONFIG_NAND_SPL) START_GOT @@ -1489,6 +1489,7 @@ relocate_code: mr r9, r4 /* Save copy of Init Data pointer */ mr r10, r5 /* Save copy of Destination Address */
+ GET_GOT mr r3, r5 /* Destination Address */ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l @@ -1506,7 +1507,7 @@ relocate_code: sub r15, r10, r4
/* First our own GOT */ - add r14, r14, r15 + add r12, r12, r15 /* then the one used by the C code */ add r30, r30, r15
@@ -1571,7 +1572,7 @@ relocate_code: in_ram:
/* - * Relocation Function, r14 point to got2+0x8000 + * Relocation Function, r12 point to got2+0x8000 * * Adjust got2 pointers, no need to check for 0, this code * already puts a few entries in the table. @@ -1645,6 +1646,8 @@ clear_bss: */ .globl trap_init trap_init: + mflr r4 /* save link register */ + GET_GOT lwz r7, GOT(_start_of_vectors) lwz r8, GOT(_end_of_vectors)
@@ -1652,8 +1655,6 @@ trap_init:
cmplw 0, r7, r8 bgelr /* return if r7>=r8 - just in case */ - - mflr r4 /* save link register */ 1: lwz r0, 0(r7) stw r0, 0(r9) diff --git a/include/ppc_asm.tmpl b/include/ppc_asm.tmpl index fa5c5f6..84de146 100644 --- a/include/ppc_asm.tmpl +++ b/include/ppc_asm.tmpl @@ -50,13 +50,13 @@ .text 2 ; \ 0: .long .LCTOC1-1f ; \ .text ; \ -1: mflr r14 ; \ - lwz r0,0b-1b(r14) ; \ - add r14,r0,r14 ; +1: mflr r12 ; \ + lwz r0,0b-1b(r12) ; \ + add r12,r0,r12 ;
#define GOT_ENTRY(NAME) .L_ ## NAME = . - .LCTOC1 ; .long NAME
-#define GOT(NAME) .L_ ## NAME (r14) +#define GOT(NAME) .L_ ## NAME (r12)
/***************************************************************************