diff options
Diffstat (limited to 'toolchain/musl/patches/010-Add-PowerPC-soft-float-support.patch')
| -rw-r--r-- | toolchain/musl/patches/010-Add-PowerPC-soft-float-support.patch | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/toolchain/musl/patches/010-Add-PowerPC-soft-float-support.patch b/toolchain/musl/patches/010-Add-PowerPC-soft-float-support.patch new file mode 100644 index 0000000..195c933 --- /dev/null +++ b/toolchain/musl/patches/010-Add-PowerPC-soft-float-support.patch @@ -0,0 +1,154 @@ +From: Felix Fietkau <nbd@openwrt.org> +Date: Wed, 8 Jul 2015 13:56:37 +0200 +Subject: [PATCH] Add PowerPC soft-float support + +Some PowerPC CPUs (e.g. Freescale MPC85xx) have a completely different +instruction set for floating point operations (SPE). +Executing regular PowerPC floating point instructions results in +"Illegal instruction" errors. + +Make it possible to run these devices in soft-float mode. + +Signed-off-by: Felix Fietkau <nbd@openwrt.org> +--- + create mode 100644 src/fenv/powerpc-sf/fenv.sub + create mode 100644 src/setjmp/powerpc-sf/longjmp.s + create mode 100644 src/setjmp/powerpc-sf/longjmp.sub + create mode 100644 src/setjmp/powerpc-sf/setjmp.s + create mode 100644 src/setjmp/powerpc-sf/setjmp.sub + +--- a/arch/powerpc/reloc.h ++++ b/arch/powerpc/reloc.h +@@ -1,4 +1,10 @@ +-#define LDSO_ARCH "powerpc" ++#ifdef _SOFT_FLOAT ++#define FP_SUFFIX "-sf" ++#else ++#define FP_SUFFIX "" ++#endif ++ ++#define LDSO_ARCH "powerpc" FP_SUFFIX + + #define TPOFF_K (-0x7000) + +--- a/configure ++++ b/configure +@@ -538,6 +538,10 @@ trycppif "_MIPSEL || __MIPSEL || __MIPSE + trycppif __mips_soft_float "$t" && SUBARCH=${SUBARCH}-sf + fi + ++if test "$ARCH" = "powerpc" ; then ++trycppif _SOFT_FLOAT "$t" && SUBARCH=${SUBARCH}-sf ++fi ++ + test "$ARCH" = "microblaze" && trycppif __MICROBLAZEEL__ "$t" \ + && SUBARCH=${SUBARCH}el + +--- /dev/null ++++ b/src/fenv/powerpc-sf/fenv.sub +@@ -0,0 +1 @@ ++../fenv.c +--- /dev/null ++++ b/src/setjmp/powerpc-sf/longjmp.s +@@ -0,0 +1,47 @@ ++ .global _longjmp ++ .global longjmp ++ .type _longjmp,@function ++ .type longjmp,@function ++_longjmp: ++longjmp: ++# void longjmp(jmp_buf env, int val); ++# put val into return register and restore the env saved in setjmp ++# if val(r4) is 0, put 1 there. ++ # 0) move old return address into r0 ++ lwz 0, 0(3) ++ # 1) put it into link reg ++ mtlr 0 ++ #2 ) restore stack ptr ++ lwz 1, 4(3) ++ #3) restore control reg ++ lwz 0, 8(3) ++ mtcr 0 ++ #4) restore r14-r31 ++ lwz 14, 12(3) ++ lwz 15, 16(3) ++ lwz 16, 20(3) ++ lwz 17, 24(3) ++ lwz 18, 28(3) ++ lwz 19, 32(3) ++ lwz 20, 36(3) ++ lwz 21, 40(3) ++ lwz 22, 44(3) ++ lwz 23, 48(3) ++ lwz 24, 52(3) ++ lwz 25, 56(3) ++ lwz 26, 60(3) ++ lwz 27, 64(3) ++ lwz 28, 68(3) ++ lwz 29, 72(3) ++ lwz 30, 76(3) ++ lwz 31, 80(3) ++ #5) put val into return reg r3 ++ mr 3, 4 ++ ++ #6) check if return value is 0, make it 1 in that case ++ cmpwi cr7, 4, 0 ++ bne cr7, 1f ++ li 3, 1 ++1: ++ blr ++ +--- /dev/null ++++ b/src/setjmp/powerpc-sf/longjmp.sub +@@ -0,0 +1 @@ ++longjmp.s +--- /dev/null ++++ b/src/setjmp/powerpc-sf/setjmp.s +@@ -0,0 +1,43 @@ ++ .global ___setjmp ++ .hidden ___setjmp ++ .global __setjmp ++ .global _setjmp ++ .global setjmp ++ .type __setjmp,@function ++ .type _setjmp,@function ++ .type setjmp,@function ++___setjmp: ++__setjmp: ++_setjmp: ++setjmp: ++ # 0) store IP int 0, then into the jmpbuf pointed to by r3 (first arg) ++ mflr 0 ++ stw 0, 0(3) ++ # 1) store reg1 (SP) ++ stw 1, 4(3) ++ # 2) store cr ++ mfcr 0 ++ stw 0, 8(3) ++ # 3) store r14-31 ++ stw 14, 12(3) ++ stw 15, 16(3) ++ stw 16, 20(3) ++ stw 17, 24(3) ++ stw 18, 28(3) ++ stw 19, 32(3) ++ stw 20, 36(3) ++ stw 21, 40(3) ++ stw 22, 44(3) ++ stw 23, 48(3) ++ stw 24, 52(3) ++ stw 25, 56(3) ++ stw 26, 60(3) ++ stw 27, 64(3) ++ stw 28, 68(3) ++ stw 29, 72(3) ++ stw 30, 76(3) ++ stw 31, 80(3) ++ # 4) set return value to 0 ++ li 3, 0 ++ # 5) return ++ blr +--- /dev/null ++++ b/src/setjmp/powerpc-sf/setjmp.sub +@@ -0,0 +1 @@ ++setjmp.s |