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Add configuration for ARMv7 softfloat build; update setjmp / longjmp ARMv7 implementation to handle the softfloat-mode properly.

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JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
This commit is contained in:
Ruben Ayrapetyan
2015-06-16 15:16:19 +03:00
parent b008867d81
commit de7b72d726
6 changed files with 67 additions and 30 deletions
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jerry-libc/CMakeLists.txt
+8 -4
View File
@@ -30,8 +30,10 @@ set(COMPILE_FLAGS_LIBC "${COMPILE_FLAGS_JERRY} ${C_FLAGS_JERRY}")
# Architecture-specific
# x86_64
set(DEFINES_LIBC_X86_64 __TARGET_HOST_x64)
# ARMv7
set(DEFINES_LIBC_ARMV7 __TARGET_HOST_ARMv7)
# ARMv7-hf
set(DEFINES_LIBC_ARMV7_HF __TARGET_HOST_ARMv7 __TARGET_HOST_ARMv7_HARD_FLOAT)
# ARMv7-el
set(DEFINES_LIBC_ARMV7_EL __TARGET_HOST_ARMv7 __TARGET_HOST_ARMv7_SOFT_FLOAT)
# x86
set(DEFINES_LIBC_X86 __TARGET_HOST_x86)
@@ -93,8 +95,10 @@ set(COMPILE_FLAGS_LIBC "${COMPILE_FLAGS_JERRY} ${C_FLAGS_JERRY}")
# Architecture-specific configuration
if(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86_64")
set(DEFINES_LIBC ${DEFINES_LIBC} ${DEFINES_LIBC_X86_64})
elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "armv7l")
set(DEFINES_LIBC ${DEFINES_LIBC} ${DEFINES_LIBC_ARMV7})
elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "armv7l-hf")
set(DEFINES_LIBC ${DEFINES_LIBC} ${DEFINES_LIBC_ARMV7_HF})
elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "armv7l-el")
set(DEFINES_LIBC ${DEFINES_LIBC} ${DEFINES_LIBC_ARMV7_EL})
elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86")
set(DEFINES_LIBC ${DEFINES_LIBC} ${DEFINES_LIBC_X86})
else()
jerry-libc/arch/arm-v7.h
+35 -23
View File
@@ -99,6 +99,20 @@
1: \
b 1b
/**
* If hard-float mode:
* store s16-s31 vfp registers to buffer, pointed with r0 register,
* and increase the register on size of stored data.
*/
#ifdef __TARGET_HOST_ARMv7_HARD_FLOAT
# define _STORE_VFP_S16_S31_IF_HARD_FLOAT \
vstm r0!, {s16 - s31};
# define _LOAD_VFP_S16_S31_IF_HARD_FLOAT \
vldm r0!, {s16 - s31};
#else /* !__TARGET_HOST_ARMv7_HARD_FLOAT */
# define _STORE_VFP_S16_S31_IF_HARD_FLOAT
# define _LOAD_VFP_S16_S31_IF_HARD_FLOAT
#endif /* !__TARGET_HOST_ARMv7_HARD_FLOAT */
/*
* setjmp
@@ -107,28 +121,27 @@
* registers are callee-saved, and so need to be stored in context:
* - r4 - r11
* - sp
* - s16-s31
* - s16 - s31
*
* Also, we should store:
* - lr
*
* stmia {r4-r11, sp, lr} -> jmp_buf_0 (r0)!
*
* FIXME:
* vstm should not be performed in softfp mode
* vstm {s16-s31} -> jmp_buf_32 (r0)!
* If hard-float build
* vstm {s16-s31} -> jmp_buf_32 (r0)!
*
* mov r0, #0
*
* bx lr
*/
#define _SETJMP \
stmia r0!, {r4 - r11, sp, lr}; \
\
vstm r0!, {s16 - s31}; \
\
mov r0, #0; \
\
stmia r0!, {r4 - r11, sp, lr}; \
\
_STORE_VFP_S16_S31_IF_HARD_FLOAT \
\
mov r0, #0; \
\
bx lr;
/*
@@ -139,9 +152,8 @@
*
* ldmia jmp_buf_0 (r0)! -> {r4-r11, sp, lr}
*
* FIXME:
* vstm should not be performed in softfp mode
* vldm jmp_buf_32 (r0)! -> {s16-s31}
* If hard-float build
* vldm jmp_buf_32 (r0)! -> {s16-s31}
*
* mov r1 -> r0
* cmp r0, #0
@@ -152,16 +164,16 @@
* bx lr
*/
#define _LONGJMP \
ldmia r0!, {r4 - r11, sp, lr}; \
\
vldm r0!, {s16 - s31}; \
\
mov r0, r1; \
cmp r0, #0; \
bne 1f; \
mov r0, #1; \
1: \
\
ldmia r0!, {r4 - r11, sp, lr}; \
\
_LOAD_VFP_S16_S31_IF_HARD_FLOAT \
\
mov r0, r1; \
cmp r0, #0; \
bne 1f; \
mov r0, #1; \
1: \
\
bx lr;
#endif /* !ASM_ARM_H */