sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

libc/machine/arm: align related implementations of armv7 architecture

Browse Source 
1. sync arch elf changes
2. fix cmake compilation break
3. remove the definition of related math files

Signed-off-by: chao an <anchao@xiaomi.com>
This commit is contained in:
chao an 2023-11-28 12:35:06 +08:00 committed by Xiang Xiao
parent 74874e0874
commit 29bda7cf27
10 changed files with 470 additions and 223 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
libs/libc/machine/arm/arm/arch_elf.c
View File

@ -157,11 +157,11 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_CALL:
case R_ARM_JUMP24:
{
binfo("Performing PC24 [%" PRId32 "] link "
"at addr %08lx [%08lx] to sym '%p' st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
(long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
binfo("Performing PC24 [%" PRId32 "] link at "
"addr %08" PRIxPTR " [%08" PRIx32 "] to "
"sym '%p' st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
*(uint32_t *)addr, sym, sym->st_value);
offset = (*(uint32_t *)addr & 0x00ffffff) << 2;
if (offset & 0x02000000)
@ -179,7 +179,7 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
offset >= (int32_t) 0x02000000)
{
berr("ERROR: PC24 [%" PRId32 "] relocation out of range, "
"offset=%08lx\n",
"offset=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), offset);
return -EINVAL;
@ -196,9 +196,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_TARGET1: /* New ABI: TARGET1 always treated as ABS32 */
{
binfo("Performing ABS32 link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
(long)addr, (long)(*(uint32_t *)addr), sym,
(long)sym->st_value);
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
addr, *(uint32_t *)addr, sym, sym->st_value);
*(uint32_t *)addr += sym->st_value;
}
@ -206,8 +206,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_V4BX:
{
binfo("Performing V4BX link at addr=%08lx [%08lx]\n",
(long)addr, (long)(*(uint32_t *)addr));
binfo("Performing V4BX link at addr=%08" PRIxPTR
" [%08" PRIx32 "]\n",
addr, *(uint32_t *)addr);
/* Preserve only Rm and the condition code */
@ -222,9 +223,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_PREL31:
{
binfo("Performing PREL31 link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
(long)addr, (long)(*(uint32_t *)addr), sym,
(long)sym->st_value);
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
addr, *(uint32_t *)addr, sym, sym->st_value);
offset = *(uint32_t *)addr + sym->st_value - addr;
*(uint32_t *)addr = offset & 0x7fffffff;
@ -235,10 +236,10 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_MOVT_ABS:
{
binfo("Performing MOVx_ABS [%" PRId32 "] link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
(long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
*(uint32_t *)addr, sym, sym->st_value);
offset = *(uint32_t *)addr;
offset = ((offset & 0xf0000) >> 4) | (offset & 0xfff);
@ -292,10 +293,11 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
lower_insn = (uint32_t)(*(uint16_t *)(addr + 2));
binfo("Performing THM_MOVx [%" PRId32 "] link "
"at addr=%08lx [%04x %04x] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
"at addr=%08" PRIxPTR " [%04x %04x] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
(int)upper_insn, (int)lower_insn,
sym, (long)sym->st_value);
sym, sym->st_value);
/* Extract the 16-bit offset from the 32-bit instruction */
@ -361,7 +363,7 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
* |OP | | 32-Bit
* +---+--+---+---+---+---------------------------------+
* |1 1 |J1 | 1 |J2 | imm11 | BL
* +------+---+---+---+--------------------------------+
* +------+---+---+---+---------------------------------+
*
* The branch target is encoded in these bits:
*
@ -376,10 +378,11 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
lower_insn = (uint32_t)(*(uint16_t *)(addr + 2));
binfo("Performing THM_JUMP24 [%" PRId32 "] link "
"at addr=%08lx [%04x %04x] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
"at addr=%08" PRIxPTR " [%04x %04x] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
(int)upper_insn, (int)lower_insn,
sym, (long)sym->st_value);
sym, sym->st_value);
/* Extract the 25-bit offset from the 32-bit instruction:
*

176
libs/libc/machine/arm/armv6-m/arch_elf.c
View File

@ -24,24 +24,13 @@
#include <nuttx/config.h>
#include <inttypes.h>
#include <stdlib.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/elf.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
@ -133,7 +122,8 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
*/
relotype = ELF32_R_TYPE(rel->r_info);
if (sym == NULL && relotype != R_ARM_NONE && relotype != R_ARM_V4BX)
if (sym == NULL && relotype != R_ARM_NONE && relotype != R_ARM_V4BX &&
relotype != R_ARM_RELATIVE && relotype != R_ARM_JUMP_SLOT)
{
return -EINVAL;
}
@ -152,11 +142,11 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_CALL:
case R_ARM_JUMP24:
{
binfo("Performing PC24 [%d] link at "
"addr %08lx [%08lx] to sym '%p' st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
(long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
binfo("Performing PC24 [%" PRId32 "] link at "
"addr %08" PRIxPTR " [%08" PRIx32 "] to "
"sym '%p' st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
*(uint32_t *)addr, sym, sym->st_value);
offset = (*(uint32_t *)addr & 0x00ffffff) << 2;
if (offset & 0x02000000)
@ -168,8 +158,8 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
if (offset & 3 || offset < (int32_t) 0xfe000000 ||
offset >= (int32_t) 0x02000000)
{
berr("ERROR: ERROR: PC24 [%d] relocation out of range, "
"offset=%08lx\n",
berr("ERROR: ERROR: PC24 [%" PRId32 "] "
"relocation out of range, offset=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), offset);
return -EINVAL;
@ -185,15 +175,29 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_ABS32:
case R_ARM_TARGET1: /* New ABI: TARGET1 always treated as ABS32 */
{
binfo("Performing ABS32 link at addr=%08lx [%08lx] "
"to sym=%p st_value=%08lx\n",
(long)addr, (long)(*(uint32_t *)addr), sym,
(long)sym->st_value);
binfo("Performing ABS32 link "
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
addr, *(uint32_t *)addr, sym, sym->st_value);
*(uint32_t *)addr += sym->st_value;
}
break;
#ifdef CONFIG_ARMV7M_TARGET2_PREL
case R_ARM_TARGET2: /* TARGET2 is a platform-specific relocation: gcc-arm-none-eabi
* performs a self relocation */
{
binfo("Performing TARGET2 link "
"at addr=%08" PRIx32 " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
addr, *(uint32_t *)addr, sym, sym->st_value);
*(uint32_t *)addr += sym->st_value - addr;
}
break;
#endif
case R_ARM_THM_CALL:
case R_ARM_THM_JUMP24:
{
@ -216,11 +220,11 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
* lower_insn:
*
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 Instructions
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 Instructions
* +---+------------------------------------------------+
* |OP | | 32-Bit
* +---+--+---+---+---+---------------------------------+
* |1 1 |J1 | 1 |J2 | imm11 | BL
* |1 1 |J1 | 1 |J2 | imm11 | BL
* +------+---+---+---+---------------------------------+
*
* The branch target is encoded in these bits:
@ -235,11 +239,12 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
upper_insn = (uint32_t)(*(uint16_t *)addr);
lower_insn = (uint32_t)(*(uint16_t *)(addr + 2));
binfo("Performing THM_JUMP24 [%d] link "
"at addr=%08lx [%04x %04x] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
binfo("Performing THM_JUMP24 [%" PRId32 "] link "
"at addr=%08" PRIxPTR " [%04x %04x] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
(int)upper_insn, (int)lower_insn,
sym, (long)sym->st_value);
sym, sym->st_value);
/* Extract the 25-bit offset from the 32-bit instruction:
*
@ -271,8 +276,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
/* And perform the relocation */
binfo(" S=%d J1=%d J2=%d offset=%08lx branch target=%08lx\n",
S, J1, J2, (long)offset, offset + sym->st_value - addr);
binfo(" S=%" PRId32 " J1=%" PRId32 " J2=%" PRId32
" offset=%08" PRIx32 " branch target=%08" PRIx32 "\n",
S, J1, J2, offset, offset + sym->st_value - addr);
offset += sym->st_value - addr;
@ -282,8 +288,8 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
if (ELF32_ST_TYPE(sym->st_info) == STT_FUNC && (offset & 1) == 0)
{
berr("ERROR: ERROR: JUMP24 [%d] "
"requires odd offset, offset=%08lx\n",
berr("ERROR: ERROR: JUMP24 [%" PRId32 "] "
"requires odd offset, offset=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), offset);
return -EINVAL;
@ -293,8 +299,8 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
if (offset < (int32_t)0xff000000 || offset >= (int32_t)0x01000000)
{
berr("ERROR: ERROR: JUMP24 [%d] "
"relocation out of range, branch target=%08lx\n",
berr("ERROR: ERROR: JUMP24 [%" PRId32 "] "
"relocation out of range, branch target=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), offset);
return -EINVAL;
@ -316,15 +322,17 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
((offset >> 1) & 0x07ff));
*(uint16_t *)(addr + 2) = (uint16_t)lower_insn;
binfo(" S=%d J1=%d J2=%d insn [%04x %04x]\n",
S, J1, J2, (int)upper_insn, (int)lower_insn);
binfo(" S=%" PRId32 " J1=%" PRId32 " J2=%" PRId32
" insn [%04" PRIx32 " %04" PRIx32 "]\n",
S, J1, J2, upper_insn, lower_insn);
}
break;
case R_ARM_V4BX:
{
binfo("Performing V4BX link at addr=%08lx [%08lx]\n",
(long)addr, (long)(*(uint32_t *)addr));
binfo("Performing V4BX link at addr=%08" PRIxPTR
" [%08" PRIx32 "]\n",
addr, *(uint32_t *)addr);
/* Preserve only Rm and the condition code */
@ -339,9 +347,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_PREL31:
{
binfo("Performing PREL31 link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
(long)addr, (long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
addr, *(uint32_t *)addr, sym, sym->st_value);
offset = *(uint32_t *)addr + sym->st_value - addr;
*(uint32_t *)addr = offset & 0x7fffffff;
@ -351,11 +359,11 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_MOVW_ABS_NC:
case R_ARM_MOVT_ABS:
{
binfo("Performing MOVx_ABS [%d] link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info),
(long)addr, (long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
binfo("Performing MOVx_ABS [%" PRId32 "] link "
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
*(uint32_t *)addr, sym, sym->st_value);
offset = *(uint32_t *)addr;
offset = ((offset & 0xf0000) >> 4) | (offset & 0xfff);
@ -379,7 +387,7 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
* upper_insn:
*
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 Instructions
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 Instruction
* +----------+---+--------------------------+----------+
* |1 1 1 |OP1| OP2 | | 32-Bit
* +----------+---+--+-----+-----------------+----------+
@ -388,13 +396,13 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
*
* lower_insn:
*
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 Instructions
* +---+-----------------------------------------------+
* |OP | | 32-Bit
* +---+----------+-----------+------------------------+
* |0 | imm3 | Rd | imm8 | MOVT
* +---+----------+-----------+------------------------+
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 Instructions
* +---+-------------------------------------------------+
* |OP | | 32-Bit
* +---+----------+--------+-----------------------------+
* |0 | imm3 | Rd | imm8 | MOVT
* +---+----------+--------+-----------------------------+
*
* The 16-bit immediate value is encoded in these bits:
*
@ -407,11 +415,12 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
upper_insn = (uint32_t)(*(uint16_t *)addr);
lower_insn = (uint32_t)(*(uint16_t *)(addr + 2));
binfo("Performing THM_MOVx [%d] link "
"at addr=%08lx [%04x %04x] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
binfo("Performing THM_MOVx [%" PRId32 "] link "
"at addr=%08" PRIxPTR " [%04x %04x] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
(int)upper_insn, (int)lower_insn,
sym, (long)sym->st_value);
sym, sym->st_value);
/* Extract the 16-bit offset from the 32-bit instruction */
@ -450,8 +459,53 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
}
break;
case R_ARM_THM_JUMP11:
{
offset = (uint32_t)(*(uint16_t *)addr & 0x7ff) << 1;
if (offset & 0x0800)
{
offset -= 0x1000;
}
offset += sym->st_value - addr;
if (ELF32_ST_TYPE(sym->st_info) == STT_FUNC && (offset & 1) == 0)
{
berr("ERROR: JUMP11 [%" PRId32 "] "
"requires odd offset, offset=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), offset);
return -EINVAL;
}
/* Check the range of the offset */
if (offset < (int32_t)0xfffff800 || offset >= (int32_t)0x0800)
{
berr("ERROR: JUMP11 [%" PRId32 "] "
"relocation out of range, branch target=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), offset);
return -EINVAL;
}
offset >>= 1;
*(uint16_t *)addr &= 0xf800;
*(uint16_t *)addr |= offset & 0x7ff;
}
break;
case R_ARM_RELATIVE:
case R_ARM_JUMP_SLOT:
{
*(uint32_t *)addr = (uint32_t)sym->st_value;
}
break;
default:
berr("ERROR: Unsupported relocation: %d\n", ELF32_R_TYPE(rel->r_info));
berr("ERROR: Unsupported relocation: %" PRId32 "\n",
ELF32_R_TYPE(rel->r_info));
return -EINVAL;
}

34
libs/libc/machine/arm/armv7-m/CMakeLists.txt
View File

@ -24,22 +24,28 @@ if(CONFIG_ARMV7M_MEMCPY)
list(APPEND SRCS gnu/arch_memcpy.S)
endif()
if(CONFIG_ARMV7M_MEMSET)
list(APPEND SRCS arch_memset.S)
endif()
if(CONFIG_ARMV7M_MEMMOVE)
list(APPEND SRCS arch_memmove.S)
endif()
if(CONFIG_ARMV7M_STRCMP)
list(APPEND SRCS arch_strcmp.S)
endif()
if(CONFIG_ARMV7M_STRCPY)
list(APPEND SRCS arch_strcpy.S)
endif()
if(CONFIG_ARMV7M_STRLEN)
list(APPEND SRCS arch_strlen.S)
endif()
if(CONFIG_LIBC_ARCH_ELF)
list(APPEND SRCS arch_elf.c)
endif()
if(CONFIG_MACHINE_OPTS_ARMV7M)
if(CONFIG_LIBM_ARCH_FABSF)
list(APPEND SRCS arch_fabsf.c)
endif()
if(CONFIG_LIBM_ARCH_SQRTF)
list(APPEND SRCS arch_sqrtf.c)
endif()
endif()
if(CONFIG_ARCH_SETJMP_H)
list(APPEND SRCS gnu/arch_setjmp.S)
endif()
target_sources(c PRIVATE ${SRCS})

55
libs/libc/machine/arm/armv7-m/arch_elf.c
View File

@ -143,10 +143,10 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_JUMP24:
{
binfo("Performing PC24 [%" PRId32 "] link at "
"addr %08lx [%08lx] to sym '%p' st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
(long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"addr %08" PRIxPTR " [%08" PRIx32 "] to "
"sym '%p' st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
*(uint32_t *)addr, sym, sym->st_value);
offset = (*(uint32_t *)addr & 0x00ffffff) << 2;
if (offset & 0x02000000)
@ -176,9 +176,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_TARGET1: /* New ABI: TARGET1 always treated as ABS32 */
{
binfo("Performing ABS32 link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
(long)addr, (long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
addr, *(uint32_t *)addr, sym, sym->st_value);
*(uint32_t *)addr += sym->st_value;
}
@ -189,9 +189,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
* performs a self relocation */
{
binfo("Performing TARGET2 link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
(long)addr, (long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"at addr=%08" PRIx32 " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
addr, *(uint32_t *)addr, sym, sym->st_value);
*(uint32_t *)addr += sym->st_value - addr;
}
@ -225,7 +225,7 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
* |OP | | 32-Bit
* +---+--+---+---+---+---------------------------------+
* |1 1 |J1 | 1 |J2 | imm11 | BL
* +------+---+---+---+--------------------------------+
* +------+---+---+---+---------------------------------+
*
* The branch target is encoded in these bits:
*
@ -240,10 +240,11 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
lower_insn = (uint32_t)(*(uint16_t *)(addr + 2));
binfo("Performing THM_JUMP24 [%" PRId32 "] link "
"at addr=%08lx [%04x %04x] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
"at addr=%08" PRIxPTR " [%04x %04x] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
(int)upper_insn, (int)lower_insn,
sym, (long)sym->st_value);
sym, sym->st_value);
/* Extract the 25-bit offset from the 32-bit instruction:
*
@ -329,8 +330,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_V4BX:
{
binfo("Performing V4BX link at addr=%08lx [%08lx]\n",
(long)addr, (long)(*(uint32_t *)addr));
binfo("Performing V4BX link at addr=%08" PRIxPTR
" [%08" PRIx32 "]\n",
addr, *(uint32_t *)addr);
/* Preserve only Rm and the condition code */
@ -345,9 +347,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_PREL31:
{
binfo("Performing PREL31 link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
(long)addr, (long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
addr, *(uint32_t *)addr, sym, sym->st_value);
offset = *(uint32_t *)addr + sym->st_value - addr;
*(uint32_t *)addr = offset & 0x7fffffff;
@ -358,10 +360,10 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_MOVT_ABS:
{
binfo("Performing MOVx_ABS [%" PRId32 "] link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
(long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
*(uint32_t *)addr, sym, sym->st_value);
offset = *(uint32_t *)addr;
offset = ((offset & 0xf0000) >> 4) | (offset & 0xfff);
@ -414,10 +416,11 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
lower_insn = (uint32_t)(*(uint16_t *)(addr + 2));
binfo("Performing THM_MOVx [%" PRId32 "] link "
"at addr=%08lx [%04x %04x] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
"at addr=%08" PRIxPTR " [%04x %04x] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
(int)upper_insn, (int)lower_insn,
sym, (long)sym->st_value);
sym, sym->st_value);
/* Extract the 16-bit offset from the 32-bit instruction */

63
libs/libc/machine/arm/armv8-m/CMakeLists.txt
View File

@ -24,55 +24,32 @@ if(CONFIG_LIBC_ARCH_ELF)
list(APPEND SRCS arch_elf.c)
endif()
if(CONFIG_ARMV8M_LIBM)
if(CONFIG_LIBM_ARCH_CEIL)
list(APPEND SRCS arch_ceil.c)
endif()
if(CONFIG_ARMV8M_MEMCHR)
list(APPEND SRCS arch_memchr.S)
endif()
if(CONFIG_LIBM_ARCH_CEILF)
list(APPEND SRCS arch_ceilf.c)
endif()
if(CONFIG_ARMV8M_MEMCPY)
list(APPEND SRCS arch_memcpy.S)
endif()
if(CONFIG_LIBM_ARCH_FLOOR)
list(APPEND SRCS arch_floor.c)
endif()
if(CONFIG_ARMV8M_MEMSET)
list(APPEND SRCS arch_memset.S)
endif()
if(CONFIG_LIBM_ARCH_FLOORF)
list(APPEND SRCS arch_floorf.c)
endif()
if(CONFIG_ARMV8M_MEMMOVE)
list(APPEND SRCS arch_memmove.S)
endif()
if(CONFIG_LIBM_ARCH_NEARBYINT)
list(APPEND SRCS arch_nearbyint.c)
endif()
if(CONFIG_ARMV8M_STRCMP)
list(APPEND SRCS arch_strcmp.S)
endif()
if(CONFIG_LIBM_ARCH_NEARBYINTF)
list(APPEND SRCS arch_nearbyintf.c)
endif()
if(CONFIG_LIBM_ARCH_RINTF)
list(APPEND SRCS arch_rintf.c)
endif()
if(CONFIG_LIBM_ARCH_ROUNDF)
list(APPEND SRCS arch_roundf.c)
endif()
if(CONFIG_LIBM_ARCH_TRUNCF)
list(APPEND SRCS arch_truncf.c)
endif()
if(CONFIG_LIBM_ARCH_RINT)
list(APPEND SRCS arch_rint.c)
endif()
if(CONFIG_LIBM_ARCH_ROUND)
list(APPEND SRCS arch_round.c)
endif()
if(CONFIG_LIBM_ARCH_TRUNC)
list(APPEND SRCS arch_trunc.c)
endif()
if(CONFIG_ARMV8M_STRCPY)
list(APPEND SRCS arch_strcpy.S)
endif()
if(CONFIG_ARMV8M_STRLEN)
list(APPEND SRCS arch_strlen.S)
endif()
target_sources(c PRIVATE ${SRCS})

119
libs/libc/machine/arm/armv8-m/arch_elf.c
View File

@ -122,7 +122,8 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
*/
relotype = ELF32_R_TYPE(rel->r_info);
if (sym == NULL && relotype != R_ARM_NONE && relotype != R_ARM_V4BX)
if (sym == NULL && relotype != R_ARM_NONE && relotype != R_ARM_V4BX &&
relotype != R_ARM_RELATIVE && relotype != R_ARM_JUMP_SLOT)
{
return -EINVAL;
}
@ -142,10 +143,10 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_JUMP24:
{
binfo("Performing PC24 [%" PRId32 "] link at "
"addr %08lx [%08lx] to sym '%p' st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
(long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"addr %08" PRIxPTR " [%08" PRIx32 "] to "
"sym '%p' st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
*(uint32_t *)addr, sym, sym->st_value);
offset = (*(uint32_t *)addr & 0x00ffffff) << 2;
if (offset & 0x02000000)
@ -175,9 +176,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_TARGET1: /* New ABI: TARGET1 always treated as ABS32 */
{
binfo("Performing ABS32 link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
(long)addr, (long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
addr, *(uint32_t *)addr, sym, sym->st_value);
*(uint32_t *)addr += sym->st_value;
}
@ -188,9 +189,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
* performs a self relocation */
{
binfo("Performing TARGET2 link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
(long)addr, (long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"at addr=%08" PRIx32 " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
addr, *(uint32_t *)addr, sym, sym->st_value);
*(uint32_t *)addr += sym->st_value - addr;
}
@ -208,23 +209,23 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
*
* upper_insn:
*
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-------+---+----------------------+-----------+
* |1 1 1|OP1| OP2 | | 32Bit Instruction
* +-------+---+-+---+----------------+-----------+
* |1 1 1| 1 0| S | imm10 | BL Instruction
* +-------+-----+---+----------------------------+
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 Instructions
* +----------+---+--------------------------+----------+
* |1 1 1 |OP1| OP2 | | 32-Bit
* +----------+---+--+-----+-----------------+----------+
* |1 1 1 | 1 0| S | imm10 | BL
* +----------+------+-----+----------------------------+
*
* lower_insn:
*
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +--+-------------------------------------------+
* |OP| | 32Bit Instruction
* +--+-+--+--+--+--------------------------------+
* |1 1|J1| 1|J2| imm11 | BL Instruction
* +----+--+--+--+--------------------------------+
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 Instructions
* +---+------------------------------------------------+
* |OP | | 32-Bit
* +---+--+---+---+---+---------------------------------+
* |1 1 |J1 | 1 |J2 | imm11 | BL
* +------+---+---+---+---------------------------------+
*
* The branch target is encoded in these bits:
*
@ -239,10 +240,11 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
lower_insn = (uint32_t)(*(uint16_t *)(addr + 2));
binfo("Performing THM_JUMP24 [%" PRId32 "] link "
"at addr=%08lx [%04x %04x] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
"at addr=%08" PRIxPTR " [%04x %04x] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
(int)upper_insn, (int)lower_insn,
sym, (long)sym->st_value);
sym, sym->st_value);
/* Extract the 25-bit offset from the 32-bit instruction:
*
@ -328,8 +330,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_V4BX:
{
binfo("Performing V4BX link at addr=%08lx [%08lx]\n",
(long)addr, (long)(*(uint32_t *)addr));
binfo("Performing V4BX link at addr=%08" PRIxPTR
" [%08" PRIx32 "]\n",
addr, *(uint32_t *)addr);
/* Preserve only Rm and the condition code */
@ -344,9 +347,9 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_PREL31:
{
binfo("Performing PREL31 link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
(long)addr, (long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
addr, *(uint32_t *)addr, sym, sym->st_value);
offset = *(uint32_t *)addr + sym->st_value - addr;
*(uint32_t *)addr = offset & 0x7fffffff;
@ -357,10 +360,10 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
case R_ARM_MOVT_ABS:
{
binfo("Performing MOVx_ABS [%" PRId32 "] link "
"at addr=%08lx [%08lx] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
(long)(*(uint32_t *)addr),
sym, (long)sym->st_value);
"at addr=%08" PRIxPTR " [%08" PRIx32 "] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
*(uint32_t *)addr, sym, sym->st_value);
offset = *(uint32_t *)addr;
offset = ((offset & 0xf0000) >> 4) | (offset & 0xfff);
@ -383,23 +386,23 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
*
* upper_insn:
*
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-------+---+-----------------------+----------+
* |1 1 1|OP1| OP2 | | 32Bit Instruction
* +-------+---+-+---+-----------------+----------+
* |1 1 1| 1 0| i | 1 0 1 1 0 0 | imm4 | MOVT Instruction
* +-------+-----+---+-----------------+----------+
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 Instruction
* +----------+---+--------------------------+----------+
* |1 1 1 |OP1| OP2 | | 32-Bit
* +----------+---+--+-----+-----------------+----------+
* |1 1 1 | 1 0| i |1 0 1 1 0 0 | imm4 | MOVT
* +----------+------+-----+-----------------+----------+
*
* lower_insn:
*
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +--+-------------------------------------------+
* |OP| | 32Bit Instruction
* +--+--------+----------+-----------------------+
* |0 | imm3 | Rd | imm8 | MOVT Instruction
* +--+--------+----------+-----------------------+
* 1 1 1 1 1 1
* 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 Instructions
* +---+-------------------------------------------------+
* |OP | | 32-Bit
* +---+----------+--------+-----------------------------+
* |0 | imm3 | Rd | imm8 | MOVT
* +---+----------+--------+-----------------------------+
*
* The 16-bit immediate value is encoded in these bits:
*
@ -413,10 +416,11 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
lower_insn = (uint32_t)(*(uint16_t *)(addr + 2));
binfo("Performing THM_MOVx [%" PRId32 "] link "
"at addr=%08lx [%04x %04x] to sym=%p st_value=%08lx\n",
ELF32_R_TYPE(rel->r_info), (long)addr,
"at addr=%08" PRIxPTR " [%04x %04x] to "
"sym=%p st_value=%08" PRIx32 "\n",
ELF32_R_TYPE(rel->r_info), addr,
(int)upper_insn, (int)lower_insn,
sym, (long)sym->st_value);
sym, sym->st_value);
/* Extract the 16-bit offset from the 32-bit instruction */
@ -492,6 +496,13 @@ int up_relocate(const Elf32_Rel *rel, const Elf32_Sym *sym, uintptr_t addr)
}
break;
case R_ARM_RELATIVE:
case R_ARM_JUMP_SLOT:
{
*(uint32_t *)addr = (uint32_t)sym->st_value;
}
break;
default:
berr("ERROR: Unsupported relocation: %" PRId32 "\n",
ELF32_R_TYPE(rel->r_info));

183
libs/libc/machine/arm/armv8-m/gnu/acle-compat.h Normal file
View File

@ -0,0 +1,183 @@
/****************************************************************************
* libs/libc/machine/arm/armv8-m/gnu/acle-compat.h
*
* Copyright (c) 2014 ARM Ltd
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the company may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
****************************************************************************/
#ifndef __LIBS_LIBC_MACHINE_ARM_ARMV7M_GNU_ACLE_COMPAT_H
#define __LIBS_LIBC_MACHINE_ARM_ARMV7M_GNU_ACLE_COMPAT_H
#ifndef __ARM_ARCH
/* ACLE standardises a set of pre-defines that describe the ARM architecture.
* These were mostly implemented in GCC around GCC-4.8; older versions
* have no, or only partial support. To provide a level of backwards
* compatibility we try to work out what the definitions should be, given
* the older pre-defines that GCC did produce. This isn't complete, but
* it should be enough for use by routines that depend on this header.
*/
/* No need to handle ARMv8, GCC had ACLE support before that. */
# ifdef __ARM_ARCH_7__
/* The common subset of ARMv7 in all profiles. */
# define __ARM_ARCH 7
# define __ARM_ARCH_ISA_THUMB 2
# define __ARM_FEATURE_CLZ
# define __ARM_FEATURE_LDREX 7
# define __ARM_FEATURE_UNALIGNED
# endif
# if defined (__ARM_ARCH_7A__) || defined (__ARM_ARCH_7R__)
# define __ARM_ARCH 7
# define __ARM_ARCH_ISA_THUMB 2
# define __ARM_ARCH_ISA_ARM
# define __ARM_FEATURE_CLZ
# define __ARM_FEATURE_SIMD32
# define __ARM_FEATURE_DSP
# define __ARM_FEATURE_QBIT
# define __ARM_FEATURE_SAT
# define __ARM_FEATURE_LDREX 15
# define __ARM_FEATURE_UNALIGNED
# ifdef __ARM_ARCH_7A__
# define __ARM_ARCH_PROFILE 'A'
# else
# define __ARM_ARCH_PROFILE 'R'
# endif
# endif
# ifdef __ARM_ARCH_7EM__
# define __ARM_ARCH 7
# define __ARM_ARCH_ISA_THUMB 2
# define __ARM_FEATURE_CLZ
# define __ARM_FEATURE_SIMD32
# define __ARM_FEATURE_DSP
# define __ARM_FEATURE_QBIT
# define __ARM_FEATURE_SAT
# define __ARM_FEATURE_LDREX 7
# define __ARM_FEATURE_UNALIGNED
# define __ARM_ARCH_PROFILE 'M'
# endif
# ifdef __ARM_ARCH_7M__
# define __ARM_ARCH 7
# define __ARM_ARCH_ISA_THUMB 2
# define __ARM_FEATURE_CLZ
# define __ARM_FEATURE_QBIT
# define __ARM_FEATURE_SAT
# define __ARM_FEATURE_LDREX 7
# define __ARM_FEATURE_UNALIGNED
# define __ARM_ARCH_PROFILE 'M'
# endif
# ifdef __ARM_ARCH_6T2__
# define __ARM_ARCH 6
# define __ARM_ARCH_ISA_THUMB 2
# define __ARM_ARCH_ISA_ARM
# define __ARM_FEATURE_CLZ
# define __ARM_FEATURE_SIMD32
# define __ARM_FEATURE_DSP
# define __ARM_FEATURE_QBIT
# define __ARM_FEATURE_SAT
# define __ARM_FEATURE_LDREX 4
# define __ARM_FEATURE_UNALIGNED
# endif
# ifdef __ARM_ARCH_6M__
# define __ARM_ARCH 6
# define __ARM_ARCH_ISA_THUMB 1
# define __ARM_ARCH_PROFILE 'M'
# endif
# if defined (__ARM_ARCH_6__) || defined (__ARM_ARCH_6J__) \
|| defined (__ARM_ARCH_6K__) || defined (__ARM_ARCH_6Z__) \
|| defined (__ARM_ARCH_6ZK__)
# define __ARM_ARCH 6
# define __ARM_ARCH_ISA_THUMB 1
# define __ARM_ARCH_ISA_ARM
# define __ARM_FEATURE_CLZ
# define __ARM_FEATURE_SIMD32
# define __ARM_FEATURE_DSP
# define __ARM_FEATURE_QBIT
# define __ARM_FEATURE_SAT
# define __ARM_FEATURE_UNALIGNED
# ifndef __thumb__
# if defined (__ARM_ARCH_6K__) || defined (__ARM_ARCH_6ZK__)
# define __ARM_FEATURE_LDREX 15
# else
# define __ARM_FEATURE_LDREX 4
# endif
# endif
# endif
# if defined (__ARM_ARCH_5TE__) || defined (__ARM_ARCH_5E__)
# define __ARM_ARCH 5
# define __ARM_ARCH_ISA_ARM
# ifdef __ARM_ARCH_5TE__
# define __ARM_ARCH_ISA_THUMB 1
# endif
# define __ARM_FEATURE_CLZ
# define __ARM_FEATURE_DSP
# endif
# if defined (__ARM_ARCH_5T__) || defined (__ARM_ARCH_5__)
# define __ARM_ARCH 5
# define __ARM_ARCH_ISA_ARM
# ifdef __ARM_ARCH_5TE__
# define __ARM_ARCH_ISA_THUMB 1
# endif
# define __ARM_FEATURE_CLZ
# endif
# ifdef __ARM_ARCH_4T__
# define __ARM_ARCH 4
# define __ARM_ARCH_ISA_ARM
# define __ARM_ARCH_ISA_THUMB 1
# endif
# ifdef __ARM_ARCH_4__
# define __ARM_ARCH 4
# define __ARM_ARCH_ISA_ARM
# endif
# if defined (__ARM_ARCH_3__) || defined (__ARM_ARCH_3M__)
# define __ARM_ARCH 3
# define __ARM_ARCH_ISA_ARM
# endif
# ifdef __ARM_ARCH_2__
# define __ARM_ARCH 2
# define __ARM_ARCH_ISA_ARM
# endif
# ifdef __ARMEB__
# define __ARM_BIG_ENDIAN
# endif
#endif
#endif /* __LIBS_LIBC_MACHINE_ARM_ARMV7M_GNU_ACLE_COMPAT_H */

2
libs/libc/machine/arm/armv8-m/gnu/arch_memchr.S
View File

@ -84,6 +84,8 @@
.syntax unified
#include "acle-compat.h"
@ NOTE: This ifdef MUST match the one in memchr-stub.c
#if defined (__ARM_NEON__) || defined (__ARM_NEON)
#if __ARM_ARCH >= 8 && __ARM_ARCH_PROFILE == 'R'

6
libs/libc/machine/arm/armv8-m/gnu/arch_strcpy.S
View File

@ -18,6 +18,10 @@
*
***************************************************************************/
#include "libc.h"
#ifdef LIBC_BUILD_STRCPY
/* This strcpy borrowed some ideas from arch_strcmp.S(). */
/* Parameters and result. */
@ -304,3 +308,5 @@ offset_3:
.cpy_done:
*dst++ = 0;
#endif /* Pseudo code end */
#endif

2
libs/libc/machine/arm/armv8-m/gnu/arch_strlen.S
View File

@ -66,6 +66,8 @@
#ifdef LIBC_BUILD_STRLEN
#include "acle-compat.h"
.macro def_fn f p2align=0
.text
.p2align \p2align