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authorMike Frysinger <vapier@gentoo.org>2006-11-17 06:51:34 +0000
committerMike Frysinger <vapier@gentoo.org>2006-11-17 06:51:34 +0000
commita86d1a42c8ddc7cc36f28921e2c0201b08138943 (patch)
tree5ea208bd46b020940b62f0c391b53ac755879e50 /libc/sysdeps/linux/bfin
parenta9f3bfe7dd2f2b3f690ff88d9ce83858f9b85b6d (diff)
Bernd Schmidt writes: [blackfin updates] add support for FDPIC and include L1 functions
Diffstat (limited to 'libc/sysdeps/linux/bfin')
-rw-r--r--libc/sysdeps/linux/bfin/bits/bfin_sram.h12
-rw-r--r--libc/sysdeps/linux/bfin/bits/mman.h2
-rw-r--r--libc/sysdeps/linux/bfin/crt1.S53
3 files changed, 62 insertions, 5 deletions
diff --git a/libc/sysdeps/linux/bfin/bits/bfin_sram.h b/libc/sysdeps/linux/bfin/bits/bfin_sram.h
new file mode 100644
index 000000000..1ac066a10
--- /dev/null
+++ b/libc/sysdeps/linux/bfin/bits/bfin_sram.h
@@ -0,0 +1,12 @@
+#ifndef BFIN_SRAM_H
+#define BFIN_SRAM_H
+
+#define L1_INST_SRAM 0x00000001
+#define L1_DATA_A_SRAM 0x00000002
+#define L1_DATA_B_SRAM 0x00000004
+#define L1_DATA_SRAM 0x00000006
+extern void *sram_alloc(size_t size, unsigned long flags);
+extern int sram_free(const void *addr);
+extern void *dma_memcpy(void *dest, const void *src, size_t len);
+
+#endif
diff --git a/libc/sysdeps/linux/bfin/bits/mman.h b/libc/sysdeps/linux/bfin/bits/mman.h
index 06767a9c0..c57238726 100644
--- a/libc/sysdeps/linux/bfin/bits/mman.h
+++ b/libc/sysdeps/linux/bfin/bits/mman.h
@@ -57,6 +57,8 @@
# define MAP_EXECUTABLE 0x1000 /* Mark it as an executable. */
# define MAP_LOCKED 0x2000 /* Lock the mapping. */
# define MAP_NORESERVE 0x4000 /* Don't check for reservations. */
+# define MAP_UNINITIALIZE 0x4000000 /* For anonymous mmap, memory could
+ be uninitialized. */
#endif
/* Flags to `msync'. */
diff --git a/libc/sysdeps/linux/bfin/crt1.S b/libc/sysdeps/linux/bfin/crt1.S
index ead8dbfbe..ffbd6e9af 100644
--- a/libc/sysdeps/linux/bfin/crt1.S
+++ b/libc/sysdeps/linux/bfin/crt1.S
@@ -34,11 +34,15 @@ Cambridge, MA 02139, USA. */
#include <features.h>
+#ifndef L_Scrt1
+
.text
.align 2
.global __start;
.type __start,STT_FUNC;
-.global ___uClibc_main;
+.weak __init;
+.weak __fini;
+.global ___uClibc_main;
.type ___uClibc_main,STT_FUNC;
/* Stick in a dummy reference to main(), so that if an application
@@ -49,7 +53,7 @@ Cambridge, MA 02139, USA. */
__start:
-#ifdef __BFIN_FDPIC__
+#if defined(__BFIN_FDPIC__) && !defined(__pie__)
/* P0 contains a pointer to the program's load map. */
call .Lcall;
.Lcall:
@@ -77,7 +81,10 @@ __start:
L1 = 0;
L2 = 0;
L3 = 0;
-
+
+#ifdef __ID_SHARED_LIB__
+ CALL ___shared_flat_add_library;
+#endif
/* Load register R1 (argc) from the stack to its final resting place */
P0 = SP;
R1 = [P0++];
@@ -92,21 +99,37 @@ __start:
R3 += 4;
R3 = R2 + R3;
- SP += -24;
+ P2 = SP;
+ SP += -32;
[SP + 12] = R3;
+#ifndef __BFIN_FDPIC__
+ R7 = 0;
+#endif
+ /* Pass highest stack pointer to the app. */
+ [SP + 28] = P2;
+ /* Store the pointer to ld.so's fini that we got in P1. */
+ [SP + 24] = R7;
+
/* Ok, now run uClibc's main() -- shouldn't return */
#if defined L_crt1 && defined __UCLIBC_CTOR_DTOR__
+
#ifdef __BFIN_FDPIC__
R3 = [P3 + __init@FUNCDESC_GOT17M4];
+#elif defined __ID_SHARED_LIB__
+ P5 = [P5 + _current_shared_library_p5_offset_];
+ R3 = [P5 + ___shared_flat_init@GOT];
#else
R3.H = __init;
R3.L = __init;
#endif
[SP+16] = R3;
+
#ifdef __BFIN_FDPIC__
R3 = [P3 + __fini@FUNCDESC_GOT17M4];
-#else
+#elif defined __ID_SHARED_LIB__
+ R3 = [P5 + ___shared_flat_fini@GOT];
+#else
R3.H = __fini;
R3.L = __fini;
#endif
@@ -119,8 +142,28 @@ __start:
#ifdef __BFIN_FDPIC__
R0 = [P3 + _main@FUNCDESC_GOT17M4];
+#elif defined __ID_SHARED_LIB__
+ R0 = [P5 + _main@GOT];
#else
R0.H = _main;
R0.L = _main;
#endif
+#ifdef __ID_SHARED_LIB__
+ P0 = [P5 + ___uClibc_main@GOT];
+ jump (P0)
+#else
jump.l ___uClibc_main;
+#endif
+
+#else
+ .text
+ .global lib_main
+ .hidden lib_main
+ .type lib_main,@function
+lib_main:
+ RETS = [SP++];
+ P0 = [P5 + ___shared_flat_add_library@GOT];
+ JUMP (P0);
+
+ .hidden _current_shared_library_p5_offset_
+#endif