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authorWojciech Kosior <kwojtus@protonmail.com>2020-10-05 14:23:47 +0200
committerWojciech Kosior <kwojtus@protonmail.com>2020-10-05 14:24:00 +0200
commit7ddb4265d30ef30df6e7098c979334109378357c (patch)
tree95e9f5785ba5f46c8a362d6600e843363ac1fcf1 /design
parent7a61f213fb9be8ab7f9bd0fb33940b21fa143b05 (diff)
downloadAGH-engineering-thesis-7ddb4265d30ef30df6e7098c979334109378357c.tar.gz
AGH-engineering-thesis-7ddb4265d30ef30df6e7098c979334109378357c.zip
fixes, add_sp instruciton and translation of br instruction from wasm
Diffstat (limited to 'design')
-rw-r--r--design/stack_machine.v7
1 files changed, 7 insertions, 0 deletions
diff --git a/design/stack_machine.v b/design/stack_machine.v
index 5e6e0d6..b5c56e6 100644
--- a/design/stack_machine.v
+++ b/design/stack_machine.v
@@ -201,6 +201,10 @@ module stack_machine_new
assign instr_jump = use_im && stack_same_size &&
instruction[11:7] == 5'd1;
+ wire instr_add_sp;
+ assign instr_add_sp = use_im && stack_same_size &&
+ instruction[11:7] == 5'd2;
+
/* Instructions, that grow stack */
wire instr_tee;
assign instr_tee = !set_im && !use_im && stack_grows &&
@@ -533,6 +537,9 @@ module stack_machine_new
if (instr_set_sp)
`SET_SP(im_effective);
+ if (instr_add_sp)
+ `SET_SP(im_effective + sp);
+
if (instr_jump)
`SET_PC(im_effective);