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sh: fix up setcontext/swapcontext

pull/23/head
Ariadne Conill 2020-12-12 05:57:58 +00:00
parent dd7ef8a806
commit 8d58adb3ba
2 changed files with 53 additions and 39 deletions
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45
arch/sh/setcontext.S
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@ -17,8 +17,20 @@ ALIAS(setcontext, libucontext_setcontext)
FUNC(libucontext_setcontext)
mov r4, r0
add #(REG_OFFSET(REG_PC)), r0 /* restore PR */
mov.l @r0+, r2
add #(REG_OFFSET(5)), r0 /* restore GPRs r5-15 */
mov.l @r0+, r5
mov.l @r0+, r6
mov.l @r0+, r7
mov.l @r0+, r8
mov.l @r0+, r9
mov.l @r0+, r10
mov.l @r0+, r11
mov.l @r0+, r12
mov.l @r0+, r13
mov.l @r0+, r14
mov.l @r0+, r15
mov.l @r0+, r2 /* restore PR */
lds.l @r0+, pr
mov.l @r0+, r1 /* restore T-flag */
@ -30,23 +42,18 @@ FUNC(libucontext_setcontext)
lds.l @r0+, macl
mov r4, r0 /* bring r0 back to the top of the context */
add #(REG_OFFSET(0)), r1 /* restore r0 into r1 (temporarily) */
mov.l r1, @-r15 /* push to stack from r1 */
mov.l r2, @-r15 /* push PC to stack */
mov.l @(REG_OFFSET(1), r0), r1 /* restore GPRs r1-15 */
mov.l @(REG_OFFSET(2), r0), r2
mov.l @(REG_OFFSET(3), r0), r3
mov.l @(REG_OFFSET(4), r0), r4
mov.l @(REG_OFFSET(5), r0), r5
mov.l @(REG_OFFSET(6), r0), r6
mov.l @(REG_OFFSET(7), r0), r7
mov.l @(REG_OFFSET(8), r0), r8
mov.l @(REG_OFFSET(9), r0), r9
mov.l @(REG_OFFSET(10), r0), r10
mov.l @(REG_OFFSET(11), r0), r11
mov.l @(REG_OFFSET(12), r0), r12
mov.l @(REG_OFFSET(13), r0), r13
mov.l @(REG_OFFSET(14), r0), r14
mov.l @(REG_OFFSET(15), r0), r15
mov.l @(REG_OFFSET(1), r0), r1 /* restore real r1 */
mov.l @(REG_OFFSET(2), r0), r2 /* restore real r2 */
mov.l @(REG_OFFSET(3), r0), r3 /* restore real r2 */
mov.l @(REG_OFFSET(4), r0), r4 /* restore real r2 */
mov.l @(REG_OFFSET(REG_PC), r0), r0
jmp @r0
mov.l @r15+, r0 /* pop PC from stack */
jmp @r0 /* jump to new PC */
mov.l @r15+, r0 /* pop original r0 from stack */
END(libucontext_setcontext)

47
arch/sh/swapcontext.S
View File

@ -52,8 +52,19 @@ FUNC(libucontext_swapcontext)
mov r5, r0 /* now restore the new context */
add #(REG_OFFSET(REG_PC)), r0 /* restore PR */
mov.l @r0+, r2
add #(REG_OFFSET(6)), r0 /* restore GPRs r6-15 */
mov.l @r0+, r6
mov.l @r0+, r7
mov.l @r0+, r8
mov.l @r0+, r9
mov.l @r0+, r10
mov.l @r0+, r11
mov.l @r0+, r12
mov.l @r0+, r13
mov.l @r0+, r14
mov.l @r0+, r15
mov.l @r0+, r2 /* restore PR */
lds.l @r0+, pr
mov.l @r0+, r1 /* restore T-flag */
@ -64,24 +75,20 @@ FUNC(libucontext_swapcontext)
lds.l @r0+, mach /* load mach/macl registers */
lds.l @r0+, macl
mov r5, r0 /* bring r5 back to the top of the context */
mov r5, r0 /* bring r0 back to the top of the context */
add #(REG_OFFSET(0)), r1 /* restore r0 into r1 (temporarily) */
mov.l r1, @-r15 /* push to stack from r1 */
mov.l r2, @-r15 /* push PC to stack */
mov.l @(REG_OFFSET(1), r0), r1 /* restore GPRs r1-15 */
mov.l @(REG_OFFSET(2), r0), r2
mov.l @(REG_OFFSET(3), r0), r3
mov.l @(REG_OFFSET(4), r0), r4
mov.l @(REG_OFFSET(5), r0), r5
mov.l @(REG_OFFSET(6), r0), r6
mov.l @(REG_OFFSET(7), r0), r7
mov.l @(REG_OFFSET(8), r0), r8
mov.l @(REG_OFFSET(9), r0), r9
mov.l @(REG_OFFSET(10), r0), r10
mov.l @(REG_OFFSET(11), r0), r11
mov.l @(REG_OFFSET(12), r0), r12
mov.l @(REG_OFFSET(13), r0), r13
mov.l @(REG_OFFSET(14), r0), r14
mov.l @(REG_OFFSET(15), r0), r15
mov.l @(REG_OFFSET(1), r0), r1 /* restore real r1 */
mov.l @(REG_OFFSET(2), r0), r2 /* restore real r2 */
mov.l @(REG_OFFSET(3), r0), r3 /* restore real r3 */
mov.l @(REG_OFFSET(4), r0), r4 /* restore real r4 */
mov.l @(REG_OFFSET(5), r0), r5 /* restore real r5 */
mov.l @(REG_OFFSET(REG_PC), r0), r0
jmp @r0
mov.l @r15+, r0 /* pop PC from stack */
jmp @r0 /* jump to new PC */
mov.l @r15+, r0 /* pop original r0 from stack */
END(libucontext_swapcontext)