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[rv]信号处理进入用户态前恢复gp #9072

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Merged
merged 3 commits into from
Jun 21, 2024
Merged

[rv]信号处理进入用户态前恢复gp #9072

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43f752a
[rv/virt/stackframe.h]添加GP寄存器保存偏移量宏
heyuanjie87 Jun 19, 2024
e36c393
【rv/c906/stackframe.h]定义GP寄存器存储偏移量
heyuanjie87 Jun 19, 2024
0271fa8
[rv]信号处理切换到用户态前恢复gp
heyuanjie87 Jun 19, 2024
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3 changes: 3 additions & 0 deletions components/lwp/arch/risc-v/rv64/lwp_gcc.S
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Expand Up @@ -174,6 +174,9 @@ arch_thread_signal_enter:
/* dummy a2 */
mv a2, a1

/* restore user GP */
LOAD gp, FRAME_OFF_GP(s3)

/**
* handler(signo, psi, ucontext);
*/
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1 change: 1 addition & 0 deletions libcpu/risc-v/t-head/c906/stackframe.h
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Expand Up @@ -16,6 +16,7 @@
#define BYTES(idx) ((idx) * REGBYTES)
#define FRAME_OFF_SSTATUS BYTES(2)
#define FRAME_OFF_SP BYTES(32)
#define FRAME_OFF_GP BYTES(3)

#include "cpuport.h"
#include "encoding.h"
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1 change: 1 addition & 0 deletions libcpu/risc-v/virt64/stackframe.h
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Expand Up @@ -21,6 +21,7 @@
#define BYTES(idx) ((idx) * REGBYTES)
#define FRAME_OFF_SSTATUS BYTES(2)
#define FRAME_OFF_SP BYTES(32)
#define FRAME_OFF_GP BYTES(3)

#ifdef __ASSEMBLY__

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